低聚半乳糖对荷斯坦犊牛生长性能、血清生化指标及矿物质元素含量的影响  

Effects of Galactooligosaccharides on Growth Performance,Serum Biochemical Parameters and Mineral Element Contents of Holstein Calves

作　　者：王飞飞 常美楠 马峰涛 金宇航 郝力壮[2] 孙鹏[1] WANG Feifei;CHANG Meinan;MA Fengtao;JIN Yuhang;HAO Lizhuang;SUN Peng(State Key Laboratory of Animal Nutrition,Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China;Academic of Animal Husbandry and Veterinary Sciences,Qinghai University,Qinghai Provincial Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science,Xining 810016,China)

机构地区：[1]中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京100193 [2]青海大学畜牧兽医科学院,青海省高原放牧家畜动物营养与饲料科学重点实验室,西宁810016

出　　处：《动物营养学报》2022年第3期1623-1631,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：中国农业科学院农业科技创新工程重大产出科研选题(CAAS-ZDXT2019004);青海省“昆仑英才·高端创新创业人才”拔尖人才项目(2020);中国农业科学院科技创新工程(ASTIP-IAS07)。

摘　　要：本试验旨在研究不同剂量低聚半乳糖(GOS)对荷斯坦犊牛生长性能、血清生化指标及矿物质元素含量的影响,探究适宜犊牛生长的GOS添加剂量。选取32头出生重[(37.7±0.8)kg]相近、健康的新生荷斯坦母犊牛,随机分为4组,每组8头牛。对照组和试验组均饲喂开食料和牛奶,试验组分别在牛奶中添加10(GOS1组)、20(GOS2组)和40 g/(d·头)(GOS3组)的GOS。试验期4周。结果表明:1)与对照组相比,GOS1组和GOS2组犊牛1~2周龄平均日增重显著提高(P<0.05),1~2周龄腹泻率和料重比显著降低(P<0.05)。添加GOS对3~4周龄犊牛生长性能和腹泻率无显著影响(P>0.05)。与对照组相比,GOS1组和GOS2组犊牛1~4周龄腹泻率显著降低(P<0.05)。2)添加GOS有提高血清高密度脂蛋白含量的趋势(P=0.07)。3)与对照组相比,GOS1组和GOS3组血清钙含量显著升高(P<0.05),GOS3组血清镁含量显著升高(P<0.05)。添加GOS有提高血清铁含量的趋势(P=0.09),但对血清铜和锌含量无显著影响(P>0.05)。综上所述,添加GOS可降低犊牛的腹泻率,提高犊牛的生长性能,对脂质代谢和矿物质元素吸收有积极影响。在本试验条件下,GOS的添加剂量以10 g/(d·头)为宜。This experiment was conducted to investigate the effects of different doses of galactooligosaccharides(GOS)on growth performance,serum biochemical parameters and mineral element contents of Holstein calves,to explore the optimal supplemental dose for the growth of calves.Thirty-two healthy newborn Holstein calves with similar birth weight[(37.7±0.8)kg]were randomly divided into 4 groups with 8 calves in each group.Calves in the control group and experimental groups were fed starter diet and milk,and calves in experimental groups were fed milk supplemented with 10(GOS1 group),20(GOS2 group)and 40 g/(d·head)(GOS3 group),respectively.The experiment lasted for 4 weeks.The results showed as follows:1)compared with the control group,the average daily gain of calves during 1 to 2 weeks of age of GOS1 and GOS2 groups was significantly increased(P<0.05),and the diarrhea rate and feed to gain ratio of calves during 1 to 2weeks of age were significantly decreased from 1 to 2 weeks(P<0.05).GOS supplementation had no significant effects on the growth performance and diarrhea rate of calves during 3 to 4 weeks of age(P>0.05).Compared with the control group,the diarrhea rate of calves during 1 to 4 weeks of age of GOS1 and GOS2 groups was significantly decreased(P<0.05).2)GOS supplementation tended to increase the serum high density lipoprotein content(P=0.07).3)Compared with the control group,the serum calcium content of GOS1 and GOS3 groups was significantly increased(P<0.05),and the serum magnesium content of GOS3 group was significantly increased(P<0.05).GOS supplementation tended to increase the serum iron content(P=0.09),but did not affect the serum copper and zinc content(P>0.05).In conclusion,GOS supplementation can reduce the diarrhea rate of calves,improve the growth performance of calves,and have positive effects on lipid metabolism and mineral element absorption.Under the conditions of this experiment,the optimal supplemental dose is 10 g/(d·head)GOS.

关 键 词：低聚半乳糖 犊牛 腹泻 血清生化指标 矿物质元素 

分 类 号：S823[农业科学—畜牧学]