饲料研究2024，Vol.47Issue(20)：1-6,6.DOI:10.13557/j.cnki.issn1002-2813.2024.20.001
饲粮中添加包被叶酸对奶牛产奶及繁殖性能的影响
Effects of dietary supplemented with coated folic acid on milk production and reproductive performance of dairy cows
摘要
Abstract
The experiment aimed to investigate the effects of coated folic acid supplementation in feed on the milk production performance,reproductive performance,and reproductive hormone levels in early lactation dairy cows.A total of 80 Holstein cows were selected five weeks postpartum and randomly divided into four groups with 20 replicates in each group and one cows per replicate.Group A(control group)was fed a basal diet,while Groups B,C,and D were supplemented with 35,70,105 mg/(cow·day)of encapsulated folic acid in their basal diet,respectively.The preliminary period lasted for seven days,and the formal experimental period was 82 days.The results showed that Groups C and D had significantly higher milk production in August compared to Group A(P＜0.05).In September,Group C had a significantly higher milk protein percentage than Groups A,B,and D(P＜0.05).The first service conception rate for Groups C and D increased by 2.95％and 5.25％,respectively,compared to Group A,and the pregnancy rate at 150 days increased by 5.88％and 2.02％,respectively.At day 21,the estradiol(E2)content in Group A was significantly higher than in Groups C and D(P＜0.05),while the progesterone(P4)content in Groups C and D was significantly higher than in Group A(P＜0.05).The study indicates that the supplementation of 70 mg/(cow·day)of encapsulated folic acid in the diet can help improve the milk production and reproductive performance of high-yielding dairy cows in large-scale dairy farms.关键词
包被叶酸/奶牛/产奶性能/繁殖性能/生殖激素Key words
coated folic acid/dairy cows/milk production performance/reproductive performance/reproductive hormones分类
农业科技引用本文复制引用
成宇,彭夏雨,魏勇,邹阿玲,苗苗,魏天雨,张莎莎,李智星..饲粮中添加包被叶酸对奶牛产奶及繁殖性能的影响[J].饲料研究,2024,47(20):1-6,6.基金项目
2021年度兵团南疆重点产业创新发展支撑计划项目(项目编号:2021DB016) （项目编号:2021DB016）
2021年度石河子大学创新发展专项(项目编号:CXFZ202111) （项目编号:CXFZ202111）
2022年度自治区三农骨干人才培养项目(项目编号:2022SNGGGCC003) （项目编号:2022SNGGGCC003）
2021年度兵团十二师科技计划项目(项目编号:SR202101) （项目编号:SR202101）
