葵花秸秆替代玉米秸秆对奶牛消化性能、泌乳性能、瘤胃发酵指标及血清生化指标的影响OA北大核心CSTPCD
Effects of sunflower straw replacement of corn stover on digestive performance,lactation performance,rumen fermentation indexes,and serum biochemical indexes of dairy cows
文章旨在探究葵花秸秆替代玉米秸秆对奶牛消化性能、泌乳性能、瘤胃发酵指标及血清生化指标的影响.选取胎次、体重、产奶量差异均不显著的中国荷斯坦奶牛80头,随机分为4组,每组20个重复,每头为1个重复.对照组饲喂基础饲粮,试验组分别用葵花秸秆替换基础饲粮中20%(Ⅰ组)、50%(Ⅱ组)、100%(Ⅲ组)的玉米秸秆.试验期100 d,其中预试期10 d,正式试验期90 d.结果显示,与对照组相比,3个试验组的干物质采食量均显著提高(P<0.05),干物质表观消化率显著提高(P<0.05),粗蛋白表观消化率均极显著提高(P<0.01);Ⅱ组乳中体细胞数显著降低(P<0.05);Ⅲ组微生物蛋白含量显著降低(P<0.05);Ⅱ组和Ⅲ组60、90d时血清总蛋白和白蛋白含量均显著升高(P<0.05);Ⅰ组的生产效益每天增加了4.51元/头.研究表明,以20%的葵花秸秆替代玉米秸秆能够提高奶牛的采食量,改善机体对营养物质的消化与吸收,提高产奶量和乳品质,对瘤胃环境和肝肾功能无不良影响,经济效益较好.
The paper was to investigate the effects of sunflower straw replacing corn stover on the digestive performance,lactation performance,rumen fermentation indexes,and serum biochemical indexes of dairy cows.Eighty Chinese Holstein cows with no significant differences in parity,body weight,and milk yield were selected and randomly divided into four groups of 20 replicates each,with each head as a replicate.The control group was fed a basal diet,and unflower straw in the experimental groups was replaced with 20%(Group Ⅰ),50%(Group Ⅱ),and 100%(Group Ⅲ)corn stover in the basal diet,respectively.The experiment lasted for 100 days,including 10 days of pre-test and 90 days of formal experiment.The results showed that compared with the control group,the dry matter intake of the three experimental groups was significantly increased(P<0.05),the apparent digestibility of dry matter was significantly increased(P<0.05),the apparent digestibility of crude protein in all experimental groups was extremely increased(P<0.01).The somatic cell count in the milk of Group Ⅱwas significantly reduced(P<0.05),the microbial protein content in Group m was significantly decreased(P<0.05).Groups Ⅱ and Ⅲ showed a significant increase in the levels of total protein and albumin in serum at 60 and 90 days(P<0.05).The production efficiency of Group Ⅰ increased by 4.51 yuan/head per day.The study shows that replacing corn stover with 20%sunflower stalks can increase dairy cows'feed intake,improve digestion and absorption of nutrients,and improve milk production and quality,with no adverse effects on the rumen environment and liver and kidney function,and with better economic benefits.
田莹俏;张欣雨;赵妍;张浩
新疆畜牧科学院,新疆乌鲁木齐 830000新疆农业大学,新疆乌鲁木齐 830000伊犁职业技术学院,新疆伊宁 835000
畜牧业
葵花秸秆玉米秸秆奶牛生产性能
sunflower strawcorn stovercowsproduction performance
《饲料研究》 2024 (017)
13-19 / 7
自治区自然基金重点项目(项目编号:2022D01D10);新疆兵团十二师重大科技项目(项目编号:SRS2022012、SR2020001、SR202101);新疆兵团揭榜挂帅项目(项目编号:SRS2022001)
评论