动物营养学报2016，Vol.28Issue(9)：2742-2748,7.DOI:10.3969/j.issn.1006-267x.2016.09.011
精料补充料钙、磷水平对牧区冬春季羔羊生长性能、血清生化指标及骨成分的影响
Effects of Calcium and Phosphorus Levels of Supplementary Concentrate on Growth Performance, Serum Biochemical Indices and Bone Composition of Lambs in Pastoral Areas during Winter and Spring Season
摘要
Abstract
This study aimed to investigate the effects of different levels of calcium and phosphorus of supple-mentary concentrate on growth performance, serum biochemical indices and bone composition of lambs fed low quality roughages in pastoral areas of Inner Mongolia during winter and spring season. Ninety-six healthy Uju-muqin weaner lambs (half male and half female) aged (30±2) days with body weight of (12.50±1.21) kg were assigned to one of three groups with 32 lambs per group using single factor experimental design. Lambs were offered supplementary concentrate with different levels of calcium and phosphorus ( group A: calcium 0.40% and phosphorus 0.38%; group B: calcium 0.50% and phosphorus 0.48%; group C: calcium 0.68%and phosphorus 0.65%) . The experiment lasted for 55 d including 5 d of pre-experiment and 50 d of experi-ment. The results showed as follows: average daily gain ( ADG) of three groups was very similar with an ap-proximate value of 200 g/d. ADG and total feed intake were not significantly affected by supplementary con-centrate with different levels of calcium and phosphorus ( P>0.05) . On day 50, serum phosphorus content of group C was significantly higher than that of groups A and B (P<0.05). The contents of serum calcium and parathyroid hormone, and the activity of alkaline phosphatase did not differ significantly among groups ( P>0.05) . Calcium content in tibia of group C was significantly higher than that of group A ( P<0.05) , and was not significantly different from that of group B(P>0.05), whereas no significant difference was observed in phosphorus content in tibia among groups ( P>0.05) . The results indicate that calcium and phosphorus levels of supplementary concentrate have no significant effects on growth performance, parts of serum biochemical indi-ces and phosphorus content in tibia of Ujumuqin lambs in pastoral areas of Inner Mongolia during winter and spring season; calcium and phosphorus at 0.40 % and 0.38 % of supplementary concentrate, respectively, can met the requirement for growth, while high levels of calcium and phosphate input may contribute to resource waste and environment pollution.关键词
羔羊/钙/磷/生长性能/精料补充料Key words
lamb/calcium/phosphate/growth performance/supplementary concentrate分类
农业科技引用本文复制引用
司丙文,屠焰,王杰,张帆,张乃锋,马涛,刁其玉,朝鲁孟,徐文丽,索琼玉..精料补充料钙、磷水平对牧区冬春季羔羊生长性能、血清生化指标及骨成分的影响[J].动物营养学报,2016,28(9):2742-2748,7.基金项目
公益性行业(农业)科研专项(201303062) （农业）
