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Dietary composition and particle size effects on swine manure characteristics and gas emissions
Journal of Environmental Quality ( IF 2.4 ) Pub Date : 2020-09-01 , DOI: 10.1002/jeq2.20112
Brian J. Kerr 1 , Steven L. Trabue 1 , Daniel S. Andersen 2 , Mark B. Van Weelden 2 , Laura M. Pepple 3
Affiliation  

Nutrients excreted from animals affect the nutritive value of manure as a soil amendment as well as the composition of gases emitted from manure storage facilities. There is a dearth of information, however, on how diet type in combination with dietary particle size affects nutrients deposited into manure storage facilities and how this affects manure composition and gas emissions. To fill this knowledge gap, an animal feeding trial was performed to evaluate potential interactive effects between feed particle size and diet composition on manure characteristics and manure-derived gaseous emissions. Forty-eight finishing pigs housed in individual metabolism crates that allowed for daily collection of urine and feces were fed diets differing in fiber content and particle size. Urine and feces were collected and stored in 446-L stainless steel containers for 49 d. There were no interactive effects between diet composition and feed particle size on any manure or gas emission parameter measured. In general, diets higher in fiber content increased manure nitrogen (N), carbon (C), and total volatile fatty acid (VFA) concentrations and increased manure VFA emissions but decreased manure ammonia emissions. Decreasing the particle size of the diet lowered manure N, C, VFAs, phenolics, and indole concentrations and decreased manure emissions of total VFAs. Neither diet composition nor particle size affected manure greenhouse gas emissions.

中文翻译:

日粮成分和粒度对猪粪特性和气体排放的影响

动物排泄的养分会影响粪便作为土壤改良剂的营养价值以及粪便储存设施排放的气体成分。然而,关于日粮类型和日粮颗粒大小如何影响沉积在粪便储存设施中的养分以及这如何影响粪便成分和气体排放的信息缺乏。为了填补这一知识空白,进行了一项动物饲养试验,以评估饲料粒度和日粮成分之间对粪便特性和粪便衍生气体排放的潜在交互影响。48 头育肥猪饲养在单独的代谢箱中,可以每天收集尿液和粪便,饲喂不同纤维含量和颗粒大小的日粮。尿液和粪便被收集并储存在 446-L 不锈钢容器中 49 天。日粮组成和饲料粒度之间对任何粪便或气体排放参数均没有交互影响。一般来说,纤维含量较高的日粮会增加粪便中的氮 (N)、碳 (C) 和总挥发性脂肪酸 (VFA) 浓度,并增加粪便 VFA 的排放量,但会降低粪便中氨的排放量。减小日粮的粒径会降低粪便 N、C、VFA、酚类物质和吲哚的浓度,并减少总 VFA 的粪便排放。饮食成分和颗粒大小均不影响粪便温室气体排放。纤维含量较高的日粮增加了粪肥氮 (N)、碳 (C) 和总挥发性脂肪酸 (VFA) 的浓度,并增加了粪肥 VFA 排放量,但降低了粪肥氨排放量。减小日粮的粒径会降低粪便 N、C、VFA、酚类物质和吲哚的浓度,并减少总 VFA 的粪便排放。饮食成分和颗粒大小均不影响粪便温室气体排放。纤维含量较高的日粮增加了粪肥氮 (N)、碳 (C) 和总挥发性脂肪酸 (VFA) 的浓度,并增加了粪肥 VFA 排放量,但降低了粪肥氨排放量。减小日粮的粒径会降低粪便 N、C、VFA、酚类物质和吲哚的浓度,并减少总 VFA 的粪便排放。饮食成分和颗粒大小均不影响粪便温室气体排放。
更新日期:2020-09-01
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