动物营养学报Issue(8)：2423-2430,8.DOI:10.3969/j.issn.1006-267x.2015.08.014
饲粮不同能量水平对崂山奶山羊泌乳性能和血清生化指标的影响
Effects of Dietary Energy Level on Lactation Performance and Serum Biochemical Indices of Laoshan Dairy Goats
摘要
Abstract
This experiment was conducted to investigate the effects of dietary energy level on lactation perform-ance and serum biochemical indices of Laoshan dairy goats. Thirty Laoshan dairy goats in lactation with aver-age weight of (53.80±1.62) kg, milk yield of (1.80±0.19) kg/d and parity of 2 were used by single-factor randomized design and equally divided into 3 groups with 10 goats per group ( each goat was one replicate) . Three groups were fed diets with consistent calcium, phosphorus, and protein levels, but different energy lev-els (9.7, 10.8 and 11.6 MJ/kg, respectively). The experiment lasted for 60 d. The results showed as follows:1) milk yield in 9. 7 MJ/kg group was significantly lower than that in 10. 8 and 11. 6 MJ/kg groups ( P<0.05) , but there was no significant difference between 10.8 and 11.6 MJ/kg groups ( P>0.05) . 2) Milk fat percentage in 9.7 MJ/kg group was significantly higher than that in 10.8 and 11.6 MJ/kg groups ( P<0.05) , there was no significant effect on the other milk compositions in three groups ( P>0.05) . 3) Serum urea nitro-gen content in 10.80 MJ/kg group was significantly higher than that in 9. 7 and 11. 6 MJ/kg groups ( P<0.05) , and serum glutamic-oxalacetic transaminase activity and albumin, triglyceride and total cholesterol con-tents were significantly lower than those in 11.6 MJ/kg group ( P<0.05 or P<0.01) , however, all goats had similar contents of total protein and globulin and activity of glutamic-pyruvic transaminase in serum ( P>0.05) . Overall, considering the costing of the feeding and the above results, digestible energy level at 10.80 MJ/kg is the best for Laoshan dairy goats’ lactation performance.关键词
崂山奶山羊/能量水平/泌乳性能/血清生化指标Key words
Laoshan dairy goat/energy level/lactation performance/serum biochemical indices分类
农业科技引用本文复制引用
宋晓雯,王文丹,程明,戴正浩,林英庭..饲粮不同能量水平对崂山奶山羊泌乳性能和血清生化指标的影响[J].动物营养学报,2015,(8):2423-2430,8.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-09-011-04) （ SDAIT-09-011-04）
