动物营养学报Issue(2)：448-458,11.DOI:10.3969/j.issn.1006-267x.2015.02.015
饲粮粗蛋白质水平对崂山奶山羊生长发育及血清生化指标的影响
Effects of Dietary Crude Protein Level on Growth, Development and Serum Biochemical Indicators of Laoshan Dairy Goats
摘要
Abstract
This experiment was conducted to determine the effects of dietary crude protein ( CP ) level on growth, development and serum biochemical indicators of Laoshan dairy goats. Thirty 147-day-old weaned Laoshan dairy goats female lambs with an average body weight of (14.57±0.32) kg were used in single-factor randomized design and divided into 3 groups with 10 replicates per group and 1 lamb per replicate. Goats in the three groups were fed diets with different CP levels (10.74%, 13.22%, and 15.74%, respectively). The pre-test lasted for 14 days, and the test lasted for 162 days. The results showed that with the increase of dietary CP level: the ADG of Laoshan dairy goats was increased, and the growth of body size was speeded up; nitrogen intake and urinary nitrogen excretion were significantly increased (P<0.05 or P<0.01), while no significant effect was found on fecal nitrogen excretion ( P>0.05); the contents of serum total protein and glucose were significantly increased ( P<0. 05 ) , but total cholesterol content, and alanine aminotransferase and aspartate aminotransferase activities in serum were not significantly affected ( P>0.05) . In conclusion, according to the relationship between nitrogen intake (x) and average daily gain (y) (y=0.258 1x2+15.341x-101.88), the nitrogen intake of the best growth performance obtained in Laoshan dairy goats is 29.72 g/d.关键词
崂山奶山羊/粗蛋白质水平/生长发育/血清生化指标Key words
Laoshan dairy goat/crude protein level/growth and development/serum biochemical indicators分类
农业科技引用本文复制引用
于子洋,袁翠林,宋晓雯,程明,李斌,林英庭..饲粮粗蛋白质水平对崂山奶山羊生长发育及血清生化指标的影响[J].动物营养学报,2015,(2):448-458,11.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）
