摘要
文章旨在评价日粮添加大豆油或菜籽油对泌乳山羊产奶量、长链脂肪酸组成及泌乳期山羊及羔羊体重变化的影响。试验选择泌乳山羊15头,采用放牧方式饲养,选择分娩后的羔羊共39只[平均体重为(43.5±1.72)kg],自分娩日起分为3组,对照组放牧采食牧草,处理组在放牧的基础上每天补充20 mL大豆油或菜籽油,试验共进行15周。结果表明:与对照组相比,植物油显著降低泌乳山羊的体重损失(P<0.05),但对山羊产奶量和羔羊生长性能无显著影响(P>0.05),乳中C4:0、C6:0、C8:0、C10:0、C11:0、C14:0和C18:1脂肪酸的含量显著提高(P<0.05),乳中C12:0、C14:1、C16:0、C18:0、C18:、C18:2和C18:3脂肪酸的含量显著降低(P<0.05),此外大豆油和菜籽油组较对照组乳中共轭亚油酸含量显著提高(P<0.05)。结论:泌乳山羊放牧期每天补充20 mL大豆油或菜籽油对放牧泌乳山羊产奶量和羔羊生长性能无显著影响,但增加了乳中共轭亚油酸水平,降低泌乳山羊的体重损失。
The purpose of this study was to evaluate the effect of adding soybean oil or rapeseed oil on milk yield,longchain fatty acid composition of lactation goats and the changes of body weight of lactation goats and lambs.A total of 39 lambs(average weight 43.5±1.72 kg)were selected after delivery.They were divided into three groups since the day of delivery.The control group received grazing and forage,and the treatment group received 20 mL of soybean oil or rapeseed oil per day on the basis of grazing.Results:compared with control group,the vegetable oil groups significantly decreased goat’s weight loss(P<0.05,but the goat’s milk production and have no obvious effect on the growth performance of lamb(P>0.05),significantly improved the milk C4:0,C6:0,C8:0,C10:0,C11:0,C14:0 and C18:1 fatty acid contents(P<0.05),but significantly reduced the milk C12:0,C14:1,C16:0,C18:0,C18:,C18:2 and C18:3 fatty acids contents(P<0.05),In addition,soybean oil and rapeseed oil group significantly increased the conjugated linoleic acid content in milk compared with the control group(P<0.05).Conclusion:the supplementation of 20 mL soybean oil or rapeseed oil per day during the grazing period had no significant effect on the milk yield and growth performance of the lambs,but it increased the level of conjugated linoleic acid in the milk and reduced the weight loss of the lactation goats.
作者
王晓铄
杜立峰
WANG Xiaoshuo;DU Lifeng(Vocational and Technical College of IMAU,Baotou,Inner Mongolia 014109,China)
出处
《中国饲料》
北大核心
2019年第22期86-89,共4页
China Feed
关键词
菜籽油
大豆油
泌乳山羊
泌乳量
脂肪酸组成
体重变化
rapeseed oil
soybean oil
lactation goat
milk yield
fatty acid composition
weight change
