摘要
为研究水培小麦(Triticum aestivum)苗对奶牛产奶量、采食量和主要生产性能测定(DHI)指标的作用效果。选择180头泌乳奶牛,根据体重、产奶量、泌乳天数,按照随机区组设计分为两组,一组为对照组,饲喂基础日粮;另一组为试验组,在基础日粮中每头每天添加1 kg新鲜水培小麦苗。基础日粮参考NRC(2001)推荐的标准配制,精粗比为50:50。结果显示:试验组比对照组产奶量提高了0.74 kg·d^(-1)(P=0.17),其中初产奶牛试验组比对照组高1.67kg·d^(-1)(P<0.05),泌乳后期奶牛试验组比对照组高1.45 kg·d^(-1)(P=0.07),有差异显著的趋势。干物质采食量平均降低0.56 kg·d^(-1)(P<0.05),乳脂肪含量降低了8.15%(P=0.06),乳中脂蛋比显著低于对照组(P<0.05)。试验结果表明,奶牛全混合日粮(TMR)中添加水培小麦苗能提高干物质采食量和降低乳中脂肪含量,提高初产奶牛产奶量。
This study aimed to investigate the effect of incorporating hydroponically grown wheat(Triticum aestivum)seedlings into the diet of dairy cows in terms of milk yield,dry matter intake,and dairy herd improvement(DHI)index.A total of 180 lactating cows were divided into two groups,namely the control and treatment groups,according to their weight,milk yield,and lactation days in a random block design.The control group was fed a basic diet,whereas the treatment group was fed the basic diet supplemented with 1 kg of fresh hydroponic wheat seedlings per head per day.The basal diet conformed to the recommendations for all nutrients specified by the National Research Council(NRC,2001)for dairy cattle.The dietary concentrate-to-forage ratio was 50꞉50.Compared with those in the control group,in the treatment group,the milk yield increased to 0.74 kg·d^(-1)(P=0.17),dry matter intake decreased to 0.56 kg·d^(-1)(P<0.05),milk fat reduced by 8.15%(P=0.06),and milk-fat-to-protein ratio decreased(P<0.05).The milk yield of primiparous dairy cows in the treatment group was higher by 1.67 kg·d^(-1)(P<0.05)than that of the control group.The milk yield of late-lactation in the treatment group was 1.45 kg·d^(-1)higher than that of the control group(P=0.07),and the treatment group tended to be higher than that of control group.The results suggested that adding wheat seedlings to the total mixed diet(TMR)of dairy cows could increase the dry matter intake,reduce the ratio of milk fat rate,and increase the milk yield of primiparous cows.
作者
王风岩
邓好
杨正伟
张涛
刘宁
王建平
WANG Fengyan;DENG Hao;YANG Zhengwei;ZHANG Tao;LIU Ning;WANG Jianping(Henan University of Science&Technology,Luoyang 471000,Henan,China;Luoyang Shengsheng Dairy Company Limited,Luoyang 471100,Henan,China;Luoyang Mengjin District Animal Husbandry and Veterinary Workstation,Luoyang 471100,Henan,China)
出处
《草业科学》
CAS
CSCD
北大核心
2023年第10期2702-2710,共9页
Pratacultural Science
基金
河南省科技厅自然科学基金项目“基于抗氧化损伤的甘草酸单铵盐预防奶牛脂肪肝病作用及其机制(182300410087)”
农业部公益性项目“国内外秸秆产业化饲用技术研究推广(20100101)”。
关键词
小麦
水培
青绿饲料
泌乳时期
产奶量
乳品质
干物质采食
wheat
hydroponics
green forage
lactation period
milk yield
milk quality
dry matter intake
