当前位置: X-MOL 学术Small Rumin Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Role of integrated crop-livestock system on amelioration of heat stress on crossbred Brazilian sheep in semiarid region of northeastern Brazil
Small Ruminant Research ( IF 1.8 ) Pub Date : 2021-08-31 , DOI: 10.1016/j.smallrumres.2021.106513
José Gabriel Gonçalves Lins 1 , Serginara David Rodrigues 2 , Ana Cláudia Alexandre Albuquerque 2 , Ana Valéria Mello de Souza Marques 3
Affiliation  

The aim of this study was to evaluate the effect of livestock rearing system, sheepfold vs. integrated crop-livestock system, on heat tolerance and physiological traits of crossbred sheep (Santa Ines x Dorper) in the semiarid region of Brazilian Northeastern. Forty crossbred hair ewes (Santa Ines x Dorper), 15–48 months old, were assigned to two treatments: 20 in treatment I (SF – Sheepfold) and 20 in treatment II (ICL - integrated crop-livestock system with tall coconut palm trees). Physiological and environmental evaluations were conducted on 21 consecutive days. Respiratory rate (RR), rectal temperature (RT) and heart rate (HR) were recorded at 06:00 am and 05:00 pm, while air temperature and relative humidity were recorded from 06:00 am to 05:00 pm. Temperature and Humidity Index (THI) in the SF and ILC indicated severe stress for sheep regardless of the period of the day, and although THI in integrated crop-livestock system was 1% lower than in the sheepfold, there was no statistical differences between the treatments. Ewes from integrated crop-livestock system had lower RR and HR than sheepfold ewes at 06:00 am and 05:00 pm. The afternoon period led the animals to more dangerous situation of thermal stress condition in both treatments, however we suggest that the presence of trees in the ICL system promoted an amelioration of heat stress on grazing ewes.



中文翻译:

农牧一体化系统在缓解巴西东北部半干旱地区杂交巴西绵羊热应激中的作用

本研究的目的是评估牲畜饲养系统、羊圈. 综合作物 - 牲畜系统,关于巴西东北部半干旱地区杂交绵羊(Santa Ines x Dorper)的耐热性和生理特征。40 头 15-48 个月大的杂交毛母羊(Santa Ines x Dorper)被分配到两个处理组:处理 I(SF – 羊圈)和处理 II 中的 20 只(ICL - 带有高大椰子树的综合作物 - 牲畜系统) )。连续 21 天进行生理和环境评价。呼吸频率 (RR)、直肠温度 (RT) 和心率 (HR) 在上午 06:00 和下午 05:00 记录,而气温和相对湿度在上午 06:00 至下午 05:00 记录。SF 和 ILC 中的温度和湿度指数 (THI) 表明绵羊面临严重的压力,无论一天中的哪个时段,虽然农牧综合系统的THI比羊圈低1%,但处理之间没有统计学差异。在 06:00 am 和 05:00 pm,来自综合作物-畜牧系统的母羊的 RR 和 HR 低于羊圈母羊。下午时段使动物在两种处理中都处于更危险的热应激状态,但是我们认为 ICL 系统中树木的存在促进了放牧母羊的热应激的改善。

更新日期:2021-09-02
down
wechat
bug