中国农业大学学报2017，Vol.22Issue(3)：94-101,8.DOI:10.11841/j.issn.1007-4333.2017.03.12
饲料中添加N-羟甲基蛋氨酸钙对泌乳期奶牛血清生化指标的影响
Effects of N-hydroxymethyl methionine calcium in dietary on serum biochemical parameters of lactating dairy cows
摘要
Abstract
To study the effects of different N-hydroxymethyl methionine calcium (N-HMM-Ca) supplementation levels on serum's biochemical indexes of lactating dairy cows.Thirty lactating Holstein dairy cows,which have similar parity,milk yield and lactating stage,were randomly divided into 5 groups with 6 cows in each group.The control group was fed with basal diet,the test groups were fed with 0.15％,0.30％,0.75％ and 1.50％ levels of N-HMM-Ca of basal diet (on DM basis),respectively.The experiment lasted up to 56 d,including 14 d of adaptation period and 42 d of experimental period.The results showed that:1) Supplemented 0.75％ dosage of N-HMM-Ca on the diet improved the serum ALT and AST concentrations;2) On the 14th day of experimental period,after supplemented 1.50％ N-HMM-Ca the triglyceride (TG) concentration was significantly increased (P＜0.01).Serum high-density lipoprotein (HDL) and β-hydroxy butyric acid (β-OHB) concentration were increased with N-HMM-Ca supplementation,nevertheless,serum nonesterified fatty acid (NEFA) was decreased linear;3) Serum IgA concentration was significantly increased in 0.15％ and 0.30％ groups on 42th day (P＜0.01);4) On 28th day,serum catalase (CAT) concentration was significant higher in 0.15％ and 0.30％ level than in other treatments (P＜0.01).In conclusion,0.15％ N-HMM-Ca supplementation in the diet was beneficial to improve the health of dairy cows.关键词
荷斯坦奶牛/N-HMM-Ca/血清酶/免疫指标/抗氧化指标Key words
cows/N-HMM-Ca/biochemical/serum enzyme/immune index/antioxidant indices分类
农业科技引用本文复制引用
隋雁南,马婷婷,陈志远,余同水,贡笑笑,詹康,赵国琦..饲料中添加N-羟甲基蛋氨酸钙对泌乳期奶牛血清生化指标的影响[J].中国农业大学学报,2017,22(3):94-101,8.基金项目
江苏省高校优势学科建设工程项目(PAPD) （PAPD）
上海市科学技术委员会国内科技合作项目(14395810100) （14395810100）
