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Developing breeding values for shedding using industry data from New Zealand sheep N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-03-13 Roy Costilla, Sharon McIntyre, Sheryl-Anne Newman, Abigail Stanley, David Campbell, Michael A. Lee, Jason A. Archer, Ken G. Dodds, Patricia L. Johnson
Changes in wool prices, labour costs and animal welfare have sparked interest in several new sheep traits. Shedding, the ability of moulting or seasonal wool loss in sheep, is one of them. Here, we...
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Epichloë fungal endophyte strains and their Lolium hosts affect resistance to Listronotus bonariensis (Coleoptera: Curculionidae) N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-03-13 Alison J. Popay, Wade J. Mace, Sarah C. Finch, Marty J. Faville, Joanne G. Jensen, Vanessa M. Cave
Both adults and larvae of Listronotus bonariensis damage ryegrass (Lolium spp.), a dominant component of New Zealand pasture. Damage can be reduced by Epichloë festucae var. lolii, a biotrophic fun...
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Step-point sampling for broadleaved species’ ground cover estimation in pastures – an evaluation of Cockayne’s point on a boot toecap method N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-03-07 Graeme W. Bourdȏt, Alasdair Noble, Joseph C. Neal
Step-point sampling, conceived by plant ecologist Dr Leonard Cockayne in ca. 1925 as a method for measuring the ground cover of species in New Zealand’s modified tussock grasslands utilises a point...
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On the use of the SF6 gas tracer technique in Latin America for measuring methane emissions in ruminants: a review and analysis N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-03-04 Cecilia Loza, Maria Esperanza Cerón-Cucchi, Edward Hernando Cabezas-Garcia, Abimael Ortiz-Chura, Laura Gualdrón-Duarte, José Ignacio Gere
The SF6 gas tracer technique is extensively used to measure enteric CH4 emissions for scientific research in Latin-American countries. Although guidelines on how to properly implement this techniqu...
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Feeding live or inactive yeast to primiparous Jersey cows: nutrient digestibility, rumen fermentation, and milk fatty acid profile N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-26 Jefferson R. Gandra, Caio S. Takiya, Erika R. S. Gandra, Cibeli A. Pedrini, Euclides R. Oliveira, Rafael H. T. B. Goes, Fábio S. Machado, Juliane Damiane
The aim of this study was to evaluate the effects of live yeast (LY) or inactive yeast (IY) on intake and apparent total-tract digestibility of nutrients, ruminal fermentation, milk yield and compo...
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Should lambs born to one-year-old ewes and grown to heavy live weights be retained as replacements and mated at seven months of age? N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-21 Emmanuelle Haslin, Paul R. Kenyon, Rene A. Corner-Thomas, Steve T. Morris, Hugh T. Blair
The lifetime productivity and efficiency of singleton- and twin-born ewe lambs born to one-year-old ewes were compared with twin-born ewe lambs born to mixed-age ewes. Romney ewe lambs either born ...
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Whole-plant sesame silage in substitution of whole-plant corn silage in diets of feedlot lambs N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-21 Santos J. A. Vallecillo, Marcos J. Araújo, Andrescia F. Carvalho, José P. Carvalho Neto, Alex R. Sousa, Tairon P. Dias-Silva, Antônio L. C. Gurgel, Rafael S. Miranda, Leilson R. Bezerra, Ricardo L. Edvan
The study evaluated the replacement of whole-corn plant silage (WCPS) by whole-sesame plant silage (WSPS) in diets for finishing lambs. Forty castrated crossbred Santa Inês lambs with an average in...
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Performance, carcase traits and bioeconomicity of sheep weaned at different ages and intensively finished on Massai grass pasture receiving concentrated supplementation N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-19 Yasmin dos Santos Silva, Maria Alice de Lima Soares, Pedro Henrique Cavalcante Ribeiro, João Virgínio Emerenciano Neto, Marciane da Silva Maia, Adriano Henrique do Nascimento Rangel, Stela Antas Urbano
Intensive finishing on pasture is already accepted as a good nutritional management strategy due to the capacity of enhancing performance without requiring physical confinement infrastructure; howe...
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The adoption of intercropping practices with tropical grasses aims at optimising forage production performance in the semi-arid region N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-08 Francisco Israel Lopes Sousa, João Virgínio Emerenciano Neto, Ana Beatriz Graciano da Costa, Patrick Bezerra Fernandes, Stela Antas Urbano, Antonio Leandro Chaves Gurgel, Rodrigo da Silva Santos, Yasmin do Santos Silva, Paulo Vitor Januário do Nascimento, Danilo Matheus de Medeiros Néo
The objective of this study was to evaluate the performance intercropped between two pastures: Massai guinea grass (Megathyrsus maximus cv. Massai) and Marandu palisadegrass (Urochloa brizantha cv....
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A bio-economic modelling comparison of a Friesian Bull-Beef system and a New Generation Beef system with Friesian bulls slaughtered at 10–14 months old N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-05 Lydia J. Farrell, Stephen T. Morris, Paul R. Kenyon, Peter R. Tozer
Finishing of dairy-origin calves in an accelerated ‘New generation beef’ (NGB) beef finishing system for slaughter up to 14 months of age has potential co-sector benefits. These include production ...
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An integrative approach to silvopastoral system design: perspectives, potentials and principles N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-02-04 Thomas H. Mackay-Smith, Raphael I. Spiekermann, Dan R. Richards, Nichola Harcourt, Lucy L. Burkitt
Silvopastoral systems have complex impacts on a diverse range of outcomes, making it essential to design these systems using an integrative approach to maximise positive impacts to farms. This pape...
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Virtual reality-based meat cut planning for lamb carcasses N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-01-31 Aaron Ritchie, Harvey Ho
Consumer-level Virtual Reality (VR) hardware/software has undergone rapid developments in recent years. Its potential use in the meat industry for meat cut planning has yet to be reported. In this ...
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Methane emissions intensity in grazing dairy cows fed graded levels of concentrate pellets N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-01-31 Troy Bosher, Maria M. Della Rosa, M. Ajmal Khan, Nick Sneddon, Daniel Donaghy, Arjan Jonker
The current New Zealand greenhouse gas inventory predictions assume that dairy cows consume pasture only, but the use of supplemental feeds, including concentrates, on New Zealand dairy farms has i...
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Evaluation of the nutritive value of fermented corn grain for ruminants N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-01-24 Laura Barbosa de Carvalho, Bárbara de Sousa Mota Neta, Rayane Marques Rodrigues, Alessandra Schaphauser Rosseto Fonseca, Ana Cláudia da Costa, Karine Padilha Nunes Vieira, Wanderlei Dias Guerra, Matheus Lima Corrêa Abreu, Rosemary Lais Galati, Farah Arruda Petter, Luciano da Silva Cabral
The study aimed to evaluate the nutritive value of fermented corn grain (FCG) for ruminants by in vitro and in vivo methods. Free-toxin FCG was evaluated alone or as an ingredient of feedlot diets ...
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Reductionist science in agriculture and horticulture N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2024-01-24 Jon G. H. Hickford, Stephen L. Goldson, John R. Caradus, Jacqueline S. Rowarth
Science ensures that explanations and predictions about the biological and physical worlds are verifiable, while also providing an approach that enables improved understanding to develop and be per...
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Residual methane emissions in grazing lactating dairy cows N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-12-13 Katie Starsmore, Ben Lahart, Nicolas Villalobos-Lopez, Michael Egan, Jonathan Herron, Jennifer Burke, Laurence Shalloo
Residual methane emission (RME) is a trait that has previously been identified as being independent of animal production traits. The objective of this study was to investigate the effect of ranking...
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Supporting the growth of the dairy sheep industry in New Zealand–industry update and review of a programme linking industry and science N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-12-14 Susan McCoard, David Stevens, Diana Selbie, Li Day, Wayne Young, Alaa El-Din Bekhit, Linda Samuelsson
Commercial sheep milking is an emerging industry in New Zealand (NZ). The purpose of this review is to provide a brief industry update and to provide an overview of a six-year research programme sp...
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Effect of neutral detergent-soluble carbohydrate profile on digestive parameters of dairy goats N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-12-11 Marco Aurélio Delmondes Bomfim, Rodrigues Marcelo Teixeira, Tadeu Silva de Oliveira
The aim of the present study was to evaluate the effect of diets with high concentrations of different neutral detergent-soluble carbohydrates on the ruminal degradability and total digestibility, ...
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Mānuka honey as Rongoā for animals in agriculture N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-12-05 Sue McCoard, Enrique Pavan, Nina Butowski, Axel Heiser, Tristan Vine
The Mānuka tree is unique to Aotearoa New Zealand and was recognised by early Māori traditions as a taonga (treasure) due to its wide variety of uses and is the first globally recognised taonga. Mā...
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Wool shedding and lamb fleece weights: first-cross and backcross Wiltshire–Romney sheep scored at lamb, hogget and two-tooth ages N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-12-03 Nick W. Sneddon, Rhiannon C. Handcock, Rene A. Corner-Thomas, Paul R. Kenyon, Dean L. Burnham, Dorian J. Garrick, Mathew D. Littlejohn, Hugh T. Blair, Steve T. Morris
With decreasing wool values, interest is increasing regarding shedding sheep. To investigate this, two long-term studies introducing Wiltshire genes into Romney flocks were initiated. Data from the...
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Chitosan associated with technical cashew nut shell liquid in supplements for grazing beef steers: nitrogen balance and rumen metabolism N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-27 Nayara Gonçalves Silva, Rafael Henrique Tonissi e Buschinelli de Goes, Raquel Tenório Oliveira, Jefferson Rodrigues Gandra, Nara Regina Brandão Cônsolo, Mariana Viegas dos Santos, Douglas Gabriel Anschau, Gleice Kélen Rodrigues da Silva, Fernanda Naiara Fogaça da Cruz, Lara de Souza Oliveira, Yasmin Gonçalves da Silva de Souza
The aim of this study was to evaluate the inclusion of the chitosan (CHI) and technical cashew nutshell liquid (CNSLT) on nitrogen metabolism and ruminal fermentation on pasture system. Five steers...
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Effect of new strains of Lentilactobacillus buchneri as inoculants in sorghum silage on the fermentative profile, aerobic stability, and voluntary intake in lambs N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-26 Wagner Sousa Alves, Odilon Gomes Pereira, Alberto Jefferson da Silva Macêdo, Gabriela Duarte Oliveira Leite, Vanessa Paula da Silva, Patrícia Siqueira Leite, Karina Guimarães Ribeiro, Sebastião de Campos Valadares Filho
We evaluated the effects of various wild strains of Lentilactobacillus buchneri on the fermentation and aerobic stability of sorghum silages as well as on their intake, digestibility, nitrogen bala...
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Recessive and dominant inheritance patterns associated with synonymous differences in wool fibre curvature and medullation N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-26 David Scobie, Chikako van Koten, Marina Richena, Jeffrey Plowman, Duane Harland
Segregation into lustrous and wild-type birth coats suggested both dominant and recessive inheritance patterns associated with birth coat and subsequently with low wool fibre curvature at lamb and ...
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The effect of prepartum synthetic zeolite supplementation on the eating, lying and activity behaviours of grazing dairy cows N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-22 Jessica I. Dalton, Stacey J. Hendriks, John R. Roche, Danny J. Donaghy, Brian Dela Rue, Barbara Kuhn-Sherlock, Claire V. C. Phyn
This study determined the effect of feeding synthetic zeolite A prepartum to reduce periparturient hypocalcaemia risk on the eating, lying, and activity behaviours of multiparous grazing dairy cows...
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Ewe culling in New Zealand: an interview study of 38 farmers N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-19 Anne L. Ridler, Paul R. Kenyon, Andy W. Greer, Chris M. Logan, Sarah Morgan, Rene A. Corner-Thomas
Removal of ewes from a flock before the end of their productive life, sometimes described as ewe wastage, can potentially lead to reduced flock productivity. While the main reasons for culling ewes...
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Herbicide-resistant weeds in New Zealand’s agricultural sectors: identification, mechanisms of resistance and management N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-20 Hossein Ghanizadeh, Trevor K. James
Published in New Zealand Journal of Agricultural Research (Vol. 67, No. 1, 2024)
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Relationships between dietary factors and nitrogen partitioning to milk and urine in temperate grazing dairy cattle N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-12 David Pacheco, Chris Glassey, Charissa Thomas, Stewart F. Ledgard, Lisa A. Box, Brendon G. Welten, Paul R. Shorten
Urinary nitrogen (UN) excretion and milk production traits of 35 groups of 15 grazing cows each were measured over two years. Urine volume and N concentration were measured with urine sensors and d...
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Effect of breed and stage of lactation on the solid fat content of milk from cows milked once a day or twice a day N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-12 Inthujaa Sanjayaranj, Nicolas López-Villalobos, Hugh T. Blair, Patrick W. M. Janssen, Stephen E. Holroyd, Alastair K. H. MacGibbon
Solid fat content at 10°C (SFC10) is an important parameter of milk fat that influences the spreadability of butter. This study aimed to evaluate the effect of breed and stage of lactation on SFC10...
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The influence of the number of lambs present on the suckling behaviour of triplet-rearing ewes at pasture N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-08 Rene A. Corner-Thomas, Rachel Shanks, Ngaio J. Beausoleil
This study examined the suckling behaviour of triplet-rearing ewes for three days post-parturition. Twenty-six ewes were enrolled with 11 being observed for the entire 3-days post-lambing. The beha...
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Performance of grazing sheep kept on tamani grass supplemented with Parkia platycephala pods replacing corn in the multiple supplements N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-08 Juliana Rodrigues Lacerda Lima, Rosane Cláudia Rodrigues, Giovanne Oliveira Costa Sousa, Ana Paula Ribeiro de Jesus, Ana Claudia da Costa, Alessandra Schaphauser Rosseto Fonseca, Luciano da Silva Cabral, Clésio dos Santos Costa, Juliana Silva de Oliveira, Eduarda Castro da Silva
This study aimed to evaluate the effect of Parkia platycephala pods in the supplements for grazing sheep on intake, digestibility, and animal performance. Twenty-four sheep (21.26 ± 2.87 kg) were u...
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Hard-seeded temperate annual legumes establish better in a tropical grass pasture when autumn-sown than spring-sown in a summer dominant rainfall zone, Australia N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-01 Suzanne P. Boschma, Mark A. Brennan, Steven Harden
Temperate annual legumes can be effective companion species in tropical perennial grass pastures. These legumes are commonly sown in autumn following establishment of the grasses. However, it may b...
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Nitrous oxide emission factors for fertiliser ammonium sulphate, diammonium phosphate, and urea N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-11-02 Jiafa Luo, Tony van der Weerden, Surinder Saggar, Hong J. Di, Andriy Podolyan, Kamal Adhikari, Keren Ding, Stuart Lindsey, Dongwen Luo, Lily Ouyang, Alison Rutherford
This study determined the nitrous oxide emission factors (EF1, the percentage of N2O emitted as a proportion of fertiliser N applied) for fertilisers ammonium sulphate (AS), diammonium phosphate (D...
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Effects of tree species and planting density on the total yield of an agroforestry system in the Brazilian Cerrado N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-10-29 Arthur Gabriel Teodoro, Lucas Matheus Rodrigues, José Henrique Tertulino Rocha, Alessandro José Marques Santos, Clarice Backes, Luciana Christina Alves Lopes, Adriana Aparecida Ribon, Pedro Rogério Giongo, Patrick Bezerra Fernandes
This study aimed to evaluate the effects of spacing and population density of three tree species on the primary yield of an agroforestry system in the Cerrado. The experiment was conducted in the e...
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New Zealand dairy farm system solutions that balance reductions in nitrogen leaching with profitability – a case study N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-10-25 Charlotte Robertson, Louis Schipper, Ina Pinxterhuis, John P. Edwards, Graeme Doole, Álvaro Romera
This study tested prescribed management practices to reduce nitrogen (N) leaching by 20% while maintaining or improving profitability relative to an existing farm management baseline (Control). N l...
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Qualitative evaluation of total mixed ration silage containing forage cactus and guinea grass as a nutritional alternative for feedlot-finished sheep N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-10-25 Wilma Cristina C. dos S. Sá, Edson M. Santos, Juliana S. de Oliveira, Gherman G. L. de Araújo, Alexandre F. Perazzo, Danillo M. Pereira, Francisco Naysson de S. Santos, Alberto Jefferson da S. Macêdo, Gabriel F. de L. Cruz, Yohana R. Corrêa, Gildenia A. Pereira, José M. Cesar Neto, Joyce P. Alves
This study aimed to evaluate the fermentation characteristics, microbial populations, losses, aerobic stability and chemical composition of total mixed ration based on forage cactus and different r...
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Prevalence and incidence rate of clinical lameness in three New Zealand dairy goat farms N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-10-18 Natasha Jaques, Sally-Anne Turner, Emilie Vallee, Cord Heuer, Laura Deeming, Nicolas Lopez-Villalobos
Clinical lameness has an impact on animal welfare and profitability in different livestock industries. The objective of this study was to estimate the prevalence and incidence rate of clinical lame...
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Estimated genetic parameters for mature cow live weights during lactation in a multi-breed dairy cattle population N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-10-05 Setegn Worku Alemu, Rhiannon C. Handcock, Dorian J. Garrick
Live weight (LWT) is an important trait for dairy production systems as it influences both maintenance feed requirements and beef revenue from culled cows and from offspring surplus to replacements...
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Chemical composition, mineral profile, carbohydrate fractionation, dry matter digestibility and in vitro gas production of Furcraea foetida (L.) Haw at different phenological stages N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-25 Daniel Bezerra do Nascimento, André Luiz Rodrigues de Magalhães, Ana Lúcia Teodoro, Glayciane Costa Gois, Kelly Cristina dos Santos, Tuany Nathan Epaminondas de Amaral, Cleyton Almeida de Araújo, Priscila Barreto da Silva, Maria Flávia de Souza Severo, Fleming Sena Campos
The aim was to evaluate the chemical and mineral composition, carbohydrate fractionation, in vitro dry matter digestibility (IVDMD), and in vitro gas production of Furcraea foetida (L.) Haw at diff...
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An assessment of resistance of two plantain (Plantago lanceolata) cultivars to phenoxy herbicides N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-25 Nidhi Shrivastav, Kerry C. Harrington, Peter D. Kemp, Hossein Ghanizadeh
Plantain (Plantago lanceolata L.) is becoming widely adopted in New Zealand livestock systems due to its productivity, nutritional values and its role in reducing nitrate leaching from grazed pastu...
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Responses of soil arthropods to fertilisation with ruminant manure in irrigated buffel grass production N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-14 Adeilson de Melo Silva, Alberício Pereira de Andrade, Glayciane Costa Gois, Pedro Alves Ferreira Filho, Aline Mendes Ribeiro Rufino, Mário Adriano Ávila Queiroz
ABSTRACT The aim of this study was to characterise the edaphic macrofauna in soil cultivated with Cenchrus ciliaris L. under irrigation and fertilised with ruminant manure in a Brazilian semi-arid region. The experimental design was in split plots. The main plot was composed using tanned manure from 3 species of ruminants (goat, cattle and sheep), in addition to the control treatment (without manure)
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A framework for applying interceptive mitigations for diffuse agricultural pollution N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-13 Chris C. Tanner, Mark D. Tomer, Brandon C. Goeller
ABSTRACT Interceptive mitigation options implemented at the edge of agricultural fields and along run-off and drainage flow-paths can complement preventive in-field management actions to reduce diffuse contaminant losses to surface waters. However, it is often unclear to users which interceptive mitigation option is appropriate for their situation, where it should be located, what contaminant reductions
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Cottonseed cake as nutritional additive for sorghum silages N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-03 Evandra S. Justino, Edson M. Santos, Juliana S. Oliveira, Gherman G. L. Araújo, Hactus S. Cavalcanti, Liliane P. Santana, Rafael L. Soares, Alexandre F. Perazzo, Francisco Naysson S. Santos, Anderson M. Zanine
ABSTRACT This study aimed to determine the optimal proportion of cottonseed cake (CSC) as an additive in sorghum silage to improve its chemical composition, fermentative profile, microbial populations, losses, dry matter recovery, and aerobic stability. Five treatments were evaluated, varying the inclusion of CSC at ensiling (0, 50, 100, 200, and 200 g kg−1 on fresh matter basis). The results showed
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Field evaluation of a commercial variable-rate irrigation decision support system – a study for maize and sweet corn N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-03 Ahmed G. El-Naggar, Carolyn B. Hedley
ABSTRACT The agricultural sector is facing a pressing need to adopt variable-rate irrigation decision support systems (VRI–DSS) to address global challenges such as water quality, water scarcity, food security, and climate change. This study evaluated a model-based VRI–DSS for maize and sweetcorn crops in a commercial field with two soil zones and a VRI center pivot. The evaluation involved assessing
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Efficacy of an off-line constructed wetland for mitigating nitrogen loss from a pastoral catchment N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-03 Lee Burbery, Katrina A. Macintosh, John-Paul Praat, Vern Brasell, Aidan Bichan
ABSTRACT Constructed wetlands are an established mitigation option for reducing contaminant loads from pastoral land in New Zealand. We assess the long-term performance of a 0.5 ha, off-line, horizontal surface flow wetland, installed on a dairy farm with the primary objective of nitrate removal. Over seven years the median removal rates for nitrate-nitrogen (NO3–N), total nitrogen and total suspended
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Effects of yard weaning and human contact compared to paddock weaning on the liveweight gain and stress reactivity of beef cattle N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-09-03 Lydia M. Cranston, Brooke A. Ramsay, Jo-Anna A. J. Schoorl, Katie M. Stayton, Alison Greaves, Rachel D. Shanks, Celia J. van Kampen, John F. Cockrem, Ngaio J. Beausoleil, Stephen T. Morris, Nicholas W. Sneddon, Rebecca E. Hickson
ABSTRACT In New Zealand beef herds, calves undergo ‘paddock weaning’ by separating calves and cows into different paddocks. Anecdotal evidence indicates ‘yard weaning’ whereby calves are yarded and receive regular human contact during weaning may improve long-term stress reactivity and growth rates. Calves were allocated to one of three treatments for seven days post-separation from dams: paddock weaned
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Robots and shocks: emerging non-herbicide weed control options for vegetable and arable cropping N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-08-31 Daniel J. Bloomer, Kerry C. Harrington, Hossein Ghanizadeh, Trevor K. James
For decades, herbicides have provided easy-to-use, cost-effective weed management, but alternatives are desired. Consumer preference for chemical-free food, awareness of environmental impacts, regu...
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Methane reduction, health and regulatory considerations regarding Asparagopsis and bromoform for ruminants N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-08-28 Charles T. Eason, Peter Fennessy
ABSTRACT Asparagopsis (A. taxiformis and A. armata) as a dry feed additive, and novel oil-based formulations containing bromoform are effective at reducing enteric methane emissions in ruminant livestock. An inclusion rate of Asparagopsis at 0.2%–0.5% of the daily diet for cattle of say 470 kg consuming 15 kg dry matter (DM) per day is equivalent to 30–75 g/day Asparagopsis delivering 180–450 mg/day
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Udder and teat morphology traits associated with milk production and somatic cell score in dairy sheep from a New Zealand flock N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-08-23 Ana C. Marshall, Nicolas Lopez-Villalobos, Simon M. Loveday, Mike Weeks, Warren McNabb
ABSTRACT The objective of this study was to estimate the phenotypic correlations between udder and teat morphology traits, milk production traits, and somatic cell score in dairy sheep from a flock in New Zealand. A total of 162 lactating ewes were scored for morphology traits during the milk production season of 2021–2022. The 130-d lactation yields of milk, fat, protein, and lactose were obtained
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Simulating the number of spot-samples required to estimate the methane to carbon dioxide ratio in lambs and its relationship with methane yield N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-08-23 Maria M. Della Rosa, David Pacheco, Edgar Sandoval, Arjan Jonker
ABSTRACT Measuring the methane to carbon dioxide ratio (CH4/CO2) from animals could be useful to predict CH4 yield when dry matter intake (DMI) cannot be measured. The objectives were to (1) evaluate the relationship of CH4/CO2 with CH4 yield; (2) compare the CH4/CO2 of 10–60 simulated spot-samples with the CH4/CO2 calculated with data from 48-h of respiration chamber measurements. The DMI and CH4
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Mangere to mainstream – the story of a perennial ryegrass ecotype, a determined farmer, and a progressive seed company N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-07-24 John R. Caradus, Ross Duder, Graham A. Kerr, Alan V. Stewart, Errol R. Thom
ABSTRACT Perennial ryegrass (Lolium perenne L.) remains the predominant grazed grass in New Zealand’s pastoral agriculture. Brought in from Europe in the early nineteenth century, locally adapted populations or ecotypes developed in a number of regions. Government plant breeders, employed to provide elite cultivars for farmer use as a public good, exploited an ecotype from the Hawke’s Bay region to
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Effect of coated urea and monensin on rumen metabolism of Nellore cows fed low-quality forage-based diet N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-07-20 André S. V. Palma, Flavio Perna Junior, Mauricio X. S. Oliveira, Fabiana A. Shiozaki, Mellory M. Martins, Gustavo R. Alves, Paulo H. M. Rodrigues, Ives C. S. Bueno, Nara R. B. Cônsolo, Arlindo Saran Netto
ABSTRACT This study investigated the effect of coated urea supplementation associated with monensin on rumen metabolism and fermentation, in cattle consuming a low-quality forage-based diet. Eight ruminally cannulated Nellore cows consuming Brachiaria brizantha cv. Marandu hay were randomly assessed to two 4 × 4 Latin square design, in a 2 × 4 factorial arrangement, with a factorial treatment arrangement
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Biocontrol of St John’s wort (Hypericum perforatum) provides huge ongoing benefits to New Zealand agriculture N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-07-20 Simon V. Fowler, James Barringer, Ronny Groenteman, Grant Humphries
ABSTRACT An ex-post economic evaluation of biocontrol of St John’s wort (SJW), Hypericum perforatum, in New Zealand (NZ), used ecological niche modelling, GIS-mapped land-use vulnerabilities and a logistic equation to predict that SJW could have infested 660,000 ha of low-value hill-country pasture. To calculate productivity losses, we assumed serious infestations of SJW caused 30% decreases in farm
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Fermentative dynamics and nutritional characteristics of mixed corn silages with and without cobs associated with butterfly pea hay N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-07-12 Bruno Augusto de Souza Almeida, Fabio Andrade Teixeira, Timóteo Silva dos Santos Nunes, Glayciane Costa Gois, Lucas Oliveira Reis, Pedro Alves Ferreira Filho, Ery Jonhons Nascimento Ramos, Arquinor Conceição Rodrigues, Daniel Ribeiro Menezes, Adeilson de Melo Silva, Samara Ferreira Antunes Silva, Mário Adriano Ávila Queiroz
ABSTRACT The aim was to evaluate the fermentative dynamics and nutritional characteristics of mixed maize silages with and without commercially viable cobs associated with butterfly pea hay. A completely randomized experimental design was used in a 2 × 2 factorial scheme, with 4 replications, which corresponded to the maize cobs factor and the butterfly pea hay factor (inclusion of 30% of butterfly
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Agronomic performance and soil chemical composition when using poultry litter as organic fertilizer in Mombasa Guinea grass production N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-06-28 Danilo Augusto Tomazello, Eli Márcio da Fonseca Melo, Alessandro José Marques Santos, Clarice Backes, Arthur Gabriel Teodoro, Patrick Bezerra Fernandes, Lucas Matheus Rodrigues, Diogo da Silva Belizário, Adriana Aparecida Ribon
ABSTRACT The use of poultry litter as organic fertiliser will enhance the agronomic performance of Panicum maximum cv. Mombasa grown in the Brazilian Cerrado region. The objective of this research work was to verify the effect of poultry litter as a source of phosphorus (P) for Mombasa guinea grass production, as well as its effect on the chemical composition of clayey soil. Throughout two years, six
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Ingestive behaviour, physiological parameters and carcase traits of lambs fed diets containing greasy babassu by-product N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-06-04 Maykon Nunes de Sousa, Edegleicia Alves de Sousa, Henrique Nunes Parente, Anderson de Moura Zanine, Thiago Vinícius Costa Nascimento, Anny Graycy Vasconcelos de Oliveira Lima, Daniele de Jesus Ferreira, Karlyene Sousa da Rocha, Nítalo André Farias Machado, Miguel Arcanjo Moreira Filho, Hactus Souto Cavalcanti, Michelle de Oliveira Maia Parente
ABSTRACT This experiment was conducted to evaluate the effect of increasing levels of greasy babassu by-product (GBB) effects on ingestive behaviour, physiological parameters and carcase traits. Twenty-eight lambs (20.6 ± 4.1 kg of initial BW) were distributed in a completely randomised design being confined for 60 days. The treatments were GBB inclusion levels (0, 50, 100 and 150 g kg-1, in DM basis)
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The productive potential of intercropping Buffel-grass with Moringa: sustainable forage production in a semi-arid region N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-05-31 Vanessa Alexandre Vieira, João Virgínio Emerenciano Neto, Antonio Leandro Chaves Gurgel, Rodrigo da Silva Santos, David Ramos da Rocha, Fábio Nunes Lista, Luis Carlos Vinhas Ítavo, Vanessa Zirondi Longhini, Gelson dos Santos Difante, Felipe Pontes Teixeira das Chagas, Stela Antas Urbano
ABSTRACT The objective was to evaluate the effect of different tree densities on the productive, structural, chemical composition, thermal and light conditions of the intercropping of buffel-grass (Cenchrus ciliares L.) with moringa (Moringa oleifera Lam.). The experimental design was randomised blocks, with four replications. The treatments consisted of moringa cultivation in five tree densities:
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Evaluation of high-resolution melting and RT-qPCR probe assays for high-throughput detection of target-site mutations conferring glyphosate resistance in Lolium perenne N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-05-28 Hossein Ghanizadeh, Craig B. Anderson, Benjamin K. Franzmayr, Mike Cook, Christopher E. Buddenhagen, Zachary Ngow, Trevor K. James, Andrew G. Griffiths
Rapid identification of herbicide-resistant weeds plays a crucial role in their management. Glyphosate resistance in Lolium perenne is a growing issue in New Zealand and can be conferred by a singl...
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Impacts of long-term phosphorus and nitrogen fertiliser application on soil biology: a New Zealand perspective N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-05-28 Nicole L. Schon, Bryan A. Stevenson, Patricia M. Fraser, Shengjing Shi, Craig Anderson, Sarah Mansfield, Robert Simpson, Jo Cavanagh, Kate H. Orwin, Colin W. Gray, Alec Mackay, Gavin Lear, Maureen O’Callaghan
ABSTRACT Soil biology encompasses a vast diversity of organisms contributing to soil processes and functions that underpin the delivery of soil ecosystem services. We review the response of soil biology to long-term phosphorus (P) and nitrogen (N) fertiliser application, focusing on trials conducted at Winchmore and Ballantrae Research Stations under sheep grazing. Application of P and N fertiliser
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Protein and carbohydrate fractionation of Urochloa spp. and Megathyrsus maximus forages after intercropping with soybean in an integrated crop-livestock system N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-05-18 Mariana Borges De Castro Dias, Kátia Aparecida De Pinho Costa, Ubirajara Oliveira Bilego, João Victor Campos Pinho Costa, Patrick Bezerra Fernandes
ABSTRACT The objective was to evaluate the protein and carbohydrate fractionation of forage plants of the Urochloa spp. and Megathyrsus maximus after intercropping with soybean in crop-livestock integration, in the off-season. The experimental design used was entirely randomised, with four repetitions, in a 4 × 5 factorial scheme. The treatments consisted of four forages: Xaraes palisadegrass (Urochloa
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Different parasitoid species elicit varied Argentine stem weevil, Listronotus bonariensis avoidance responses N. Z. J. Agric. Res. (IF 1.8) Pub Date : 2023-05-17 Morgan W. Shields, Steve D. Wratten, Chikako Van Koten, Craig B. Phillips, Jacquelyn R. Bennett, Stephen L. Goldson
ABSTRACT Importation biological control can create new host-natural enemy responses that are different from those behaviours elicited in native ranges of the agent, and/or the pest. This possibility was investigated with the Argentine stem weevil (Listronotus bonariensis) in the presence of three endoparasitoid species with different levels of affinity to the weevil in New Zealand pasture. The question