动物营养学报2016，Vol.28Issue(6)：1704-1709,6.DOI:10.3969/j.issn.1006-267x.2016.06.010
育成期崂山奶山羊能量需要量
Energy Requirement of Laoshan Dairy Goats at Fattening Period
摘要
Abstract
This experiment was conducted to investigate the effects of dietary energy level on energy utilization of Laoshan dairy goat at fattening period.Thirty female Laoshan dairy goats with an average weight of (18.43±0.76) kg were used in a single-factor randomized design and divided into 3 groups with 10 replicates in each group and 1 goat per replicate.Goats in three groups were fed diets with consistent crude protein,calcium and phosphorus levels,but with different digestive energy levels (10.40,11.47 and 12.51 MJ/kg,respectively).The pretrial lasted for 10 d,and the trial lasted for 90 d.The results showed as follows:1) with the increase of dietary energy level,gross energy increased,and gross energy digestibility,gross energy metabolic rate and digestive energy metabolic rate in 12.51 MJ/kg group were significantly higher than that in 10.40 MJ/kg group (P＜0.05);there were significant differences among 3 groups in gross energy,fecal energy and urinary energy (P＜0.05),and 10.40 MJ/kg group＜ll.47 MJ/kg group＜12.51 MJ/kg group;methane energy in 10.40 MJ/kg group was significantly lower than that in 11.47 and 12.51 MJ/kg groups (P＜ 0.05).2) Final weight and average daily gain of goats in 10.40 MJ/kg group was significantly lower than those in 11.47 and 12.51 MJ/kg groups (P＜0.05),and there were no significant differences between 11.47 MJ/kg group and 12.51MJ/kg group (P＞0.05).3) The regression formulas between digestible energy or metabolizable energy requirements and average daily gain of Laoshan dairy goats at fattening period were as follow:DE=0.675W0.75 +0.110ADG (P=0.006,R2=0.982);ME=0.526W0.75 +0.076ADG (P=0.027,R2=0.873) [DE was digestive energy (MJ/d),ME was metabolizable energy (MJ/d),W0.75 was metabolic weight (kg),and ADG was average daily gain (g)].In conclusion,the optimal dietary digestive energy level for female Laoshan dairy goats at fattening period is 11.47 to 12.51 MJ/kg (dry matter basis).关键词
育成期/崂山奶山羊/能量/需要量Key words
fattning period/Laoshan dairy goat/energy/requirement分类
农业科技引用本文复制引用
宋晓雯,张广凤,王慧敏,程明,戴正浩,林英庭..育成期崂山奶山羊能量需要量[J].动物营养学报,2016,28(6):1704-1709,6.基金项目
山东省现代农业产业技术体系羊产业创新团队(SDAIT-10-04) （SDAIT-10-04）
