动物营养学报2017，Vol.29Issue(3)：806-813,8.DOI:10.3969/j.issn.1006-267x.2017.03.010
不同中性洗涤纤维与非纤维性碳水化合物比值饲粮对肉用绵羊甲烷排放的影响
Effects of Different Neutral Detergent Fiber/Nonfiberous Carbohydrate Diets on Methane Emission of Meat Sheep
摘要
Abstract
This study investigated the effects of different neutral detergent fiber/nonfiberous carbohydrate (NDF/NFC) diets on methane emission of meat sheep.The trial was conducted according to a 4 ×4 Latin square design:16 Dorper×thin tailed Han crossbred wethers were randomly divided into 4 groups with 4 sheep each,and each group was randomly fed one of four total mixed pellet diets (corn stalk as the source of roughage) with the NDF/NFC of 3.02 (diet 1),2.32 (diet 2),1.58 (diet 3) and 1.04 (diet 4) at maintenance level,respectively.The trial included 4 periods with each lasted for 18 days,and the first 3 days of each period was an adjustment period,the following 7 days was a pretrial period and the last 8 days was an experimental period.Methane emission and the apparent digestibility of gross energy and nutrients of diets were measured in the experimental period.The results showed that the methane (CH4) daily emission of sheep fed the diet 2 was significantly higher than that of those fed diets 3 and 4 (43.43 L/d vs.38.88 and 35.98 L/d;P＜0.05).Compared with the sheep fed diet l,the methane emission of per kg dry matter intake (DMI) of sheep fed diets 2 and 3 was significantly increased (38.00 L/kg DMI vs.42.24 and 41.69 L/kg DMI;P＜0.05),but no significant difference was observed among sheep fed diets 2,3 and 4 (P＞0.05).With the NDF/NFC decrease,the methane emission of per kg digestible organic matter (DOM) was gradually decreased,and sheep fed the diet 4 was significantly lower than sheep fed diets 1,2 and 3 (58.78 L/kg DOM vs.75.00,73.35 and 64.11 L/kg DOM;P＜0.05).The methane emissions of neutral detergent fiber intake (NDFI) or acid detergent fiber intake (ADFI) were gradually increased with the NDF/NFC decrease,and the difference among sheep fed four diets was significant (P＜0.05).In summary,combining with the apparent digestibility of nutrients and methane emission efficiency,the corn stalk diet with NDF/NFC of 1.04 is suited as the formula of methane emission reduction.关键词
肉用绵羊/NDF/NFC/甲烷排放/可消化有机物Key words
meat sheep/NDF/NFC/methane emission/digestible organic matter分类
农业科技引用本文复制引用
丁静美,成述儒,邓凯东,张明娇,刁其玉,屠焰..不同中性洗涤纤维与非纤维性碳水化合物比值饲粮对肉用绵羊甲烷排放的影响[J].动物营养学报,2017,29(3):806-813,8.基金项目
国家自然科学基金“绵羊甲烷排放的粪便反射特征光谱研究”(41475126) （41475126）
国家科技支撑计划项目子课题“农区肉羊健康养殖模式构建与示范”(2012BAD39B05-3) （2012BAD39B05-3）
