上海农业学报2023，Vol.39Issue(6)：1-7,7.DOI:10.15955/j.issn1000-3924.2023.06.01
营养限饲对妊娠后期湖羊母羊及羔羊发育的影响
Effects of nutritional restriction on the development of ewe and lamb of Hu sheep in late pregnancy
摘要
Abstract
At present,the research data on the nutritional requirements of ewe in the late gestation period of the Hu sheep,are still insufficient.In this study,the effects of nutritional restriction on the development of late gestation ewes and lambs were investigated through nutritional restriction of late gestation ewes.Fifteen pregnant Hu sheep were selected and randomly divided into 3 groups with 5 sheep in each group at 90 days of gestation:The control group(NC group,100％of pregnancy nutritional requirements),the low-restriction feeding group(LR group,80％of pregnancy nutritional requirements)and the high-restriction feeding group(HR group,60％of pregnancy nutritional requirements)were fed the full diet until the day of delivery according to the groups.Then,the jugular vein blood samples of ewes in the three groups were collected on the day of delivery.The contents of glucose,lactic acid,β-hydroxybutyric acid,urea nitrogen,total protein,serum ammonia,albumin,total cholesterol and triglyceride in plasma samples of three groups were determined.Lambing situation of three groups of ewe and body size index of lambs were recorded.Compared with the NC group,the weight of ewes,survival rate,birth weight and head and hip length of lambs in the LR and HR groups were significantly decreased,while there was no significant difference between the LR group and the HR group.Plasma biochemical indexes of each group on the day of delivery showed that glucose and urea nitrogen in LR group and HR group were significantly lower than those in NC group.The concentrations of lactic acid,total protein,albumin and triglyceride in blood of ewes in HR group were significantly decreased.There were no significant changes in serum β-hydroxybutyric acid,total cholesterol and serum ammonia concentrations among the three groups.The results showed that the nutritional status of ewe in late pregnancy would affect the growth and development of fetus.When the nutritional supply of pregnant ewes is insufficient,it will not only affect their own blood biochemical index,but also reduce the survival rate and birth weight of lambs,thus restricting the growth and development of lambs.关键词
湖羊/营养限饲/血液代谢/生化指标Key words
Hu sheep/Nutrient restriction/Blood metabolism/Biochemical index分类
畜牧业引用本文复制引用
林月霞,周金勇,吕玉华,主性,刘康明,方永飞,孙玲伟,廖荣荣..营养限饲对妊娠后期湖羊母羊及羔羊发育的影响[J].上海农业学报,2023,39(6):1-7,7.基金项目
上海市农业农村委员会科技兴农项目[沪农科创字(2020)第1-5号] （2020）
国家自然科学基金项目(31902149) （31902149）
