饲粮能量水平对泌乳期崂山奶山羊生产性能及能量利用效率的影响

发布时间：2018-04-21 13:51

本文选题：泌乳期 + 崂山奶山羊　；参考：《动物营养学报》2016年04期

【摘要】：本试验旨在采用饲养试验、消化代谢试验研究泌乳期崂山奶山羊的能量需要量。选用体重[(53.80±1.62)kg]、产奶量[(1.80±0.19)kg/d]、体况相近并处于泌乳期的2胎健康崂山奶山羊30只,采用单因素随机分组设计,随机分成3组,每组10只,每只羊为1个重复。分别饲喂钙、磷和粗蛋白质水平一致,消化能水平为9.71、10.80及11.61 MJ/kg的3种试验饲粮。进行为期70 d的饲养试验(前10 d为预试期);饲养试验结束后,每组选择3只羊进行为期17 d的消化代谢试验(前10 d为预试期)。结果表明,1)试验期3组试羊随着饲粮能量水平的提高,总能消化率依次提高,9.71 MJ/kg组试羊的消化能代谢率及甲烷能显著低于10.80及11.61 MJ/kg组(P0.05),3组试羊的总能、粪能及尿能间无显著差异(P0.05);2)泌乳期崂山奶山羊消化能和代谢能需要量与代谢体重、平均日增重和产奶量关系的回归公式:DE(MJ/d)=0.487W0.75+0.354ADG+6.120M(P=0.028,R2=0.870);ME(M J/d)=0.394W0.75+0.312ADG+5.281M(P=0.031,R2=0.873)(DE为消化能,W0.75为代谢体重,ADG为平均日增重,M为产奶量,ME为代谢能)。本试验成功建立了泌乳期崂山奶山羊消化能和代谢能需要量模型。
[Abstract]:The purpose of this experiment was to study the energy requirement of Laoshan dairy goat during lactation period by feeding experiment and digestion and metabolism test. 30 healthy Laoshan dairy goats with body weight [53.80 卤1.62)kg], milk yield (1.80 卤0.19)kg/d), similar body condition and lactation period were randomly divided into 3 groups, 10 in each group, with one replica per sheep. The levels of calcium, phosphorus and crude protein were the same, and the digestible energy levels were 9.71g 10.80 and 11.61 MJ/kg respectively. A 70 day feeding trial was conducted (the first 10 days was the pre-trial period), and after the feeding test, 3 sheep were selected for 17 days' digestion and metabolism test (the first 10 days was the pre-test period). The results showed that the total energy digestibility of three groups of sheep increased with the increase of dietary energy level, and the digestibility of digestible energy and methane energy were significantly lower than those of 10. 80 and 11. 61 MJ/kg groups (P 0. 05 and P 0. 05). There was no significant difference between fecal energy and urine energy (P 0.05). The regression formula of the relationship between average daily gain (ADG) and milk yield was expressed as follows: 1: DEMJ / DX 0.487W 0.75 0.354ADG 6.120Mg P0. 028m P0. 070m J/d)=0.394W0.75 0.312ADG 5. 281M J/d)=0.394W0.75 0.312ADG 0. 281M J/d)=0.394W0.75 0.312ADG 0. 873DE = digestible energy, W0. 75, metabolic body weight, ADG, average daily gain (ADG), milk yield, ME (ME), ME (ME). The model of digestive energy and metabolic energy requirement of Laoshan dairy goat during lactation period was established successfully.
【作者单位】：青岛农业大学动物科技学院;青岛市畜牧兽医研究所;
【基金】：山东省现代农业产业技术体系羊产业创新团队(SDAIT-09-011-04)
【分类号】：S827.5

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