生物炭对绵羊料摄入量,生长速度和反动物体外和体外甲生产的影响
V Lind1, Ö Sizmaz2, A Demirtas3
1Norwegian Institute of Bioeconomy Research (NIBIO), PB 115, N-1431 Aas, Norway.
概括
作为料补充剂的生物炭没有改善绵羊生长或减少甲排放. 虽然它在体外增加了短链脂肪酸,但它对牲畜表现和温室气体减少的整体影响并不显著.
科学领域:
- 农业科学 农业科学
- 动物科学动物科学
- 环境科学 环境科学
背景情况:
- 生物质热解产物生物炭正在探索用于牲畜料补充,以提高性能和减轻温室气体排放.
- 乳液发酵,甲生产和动物生长是受料添加剂影响的关键领域.
研究的目的:
- 为了评估生物炭在乳头发酵,甲排放和绵羊生长上的体外和体内影响.
- 确定最佳的生物炭含量水平在羊的饮食中,以提高性能和减少环境影响.
主要方法:
- 在实验室内化不同生物炭度 (0-46 g/kg DM) 的羊食,以评估气体产量,SCFA和微生物种群.
- 在体内实验用绵羊来测量干物质摄入量,生长速度和肠道甲 (CH4) 排放量.
主要成果:
- 生物炭没有影响体外总气体或甲生产.
- 在体外,总的SCFA增加,乙酸与酸的比率倾向于与生物炭一起降低.
- 羊的干物质摄入量在低/中等生物炭水平上增加,但不是在高水平上;增长率和CH4排放保持不变.
结论:
- 生物炭补充剂对体外/体内甲产量或羊羔生长率没有显著的积极影响.
- 需要对特征化生物炭进行进一步的研究,以了解其作为反动物料添加剂的潜力.
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