摘要
选用15头泌乳中期的荷斯坦奶牛,研究糊化羟甲基蛋氨酸钙对泌乳中期的奶牛产奶量及乳成分的影响。将试验牛分为3组,分别饲喂糊化羟甲基蛋氨酸钙(A组)、羟甲基蛋氨酸钙(B组)和对照组(C组),A组和B组的添加量分别为400 g和20 g。试验结果表明:A组和B组产奶量比C组分别提高4.97%和3.99%,差异显著(P<0.05);3组试验牛的采食量差异不显著(P>0.05);A组和B组乳脂率比C组提高5.26%和3.99%(P<0.05);3组试验牛乳蛋白率、非脂固形物、全脂固形物、乳糖都差异不显著(P>0.05)。本研究结果表明,补饲糊化羟甲基蛋氨酸钙能增加产奶量,提高乳脂率含量,提高奶牛的养殖经济效益。
To research the influence of paste-methionine-hydroxymethyl calcium and hydroxymethyl methionine calcium on milk yield and milk components of Holstein dairy cattle, 15 individual of Holstein with high-producing in the middle stagers of lactation were arranged randomly into three groups,i, e, paste-methionine-hydroxymethyl calcium（group A）, hydroxymethyl methionine calcium（group 13） and control（group C）. Group A was adding 400 g paste-methionine-hydroxymethyl calcium and group 13 was 20 g hydroxymethyl methionine calcium. The results showed that the milk production in group A and group 13 （P〈0.05） were increased by 4.97% and 3.99% respectively. Three groups had no difference（P〉0.05） in intake feed. Milk fat percentage in group A and group 13 were significantly improved 5.26% and 3. 80% respectively than group C. Whereas three groups had no differences（P〉0.05）in milk protein percentage, milk sugar solids and solids-not-fat in milk. It can be concluded that Paste-hydroxymethyf-methionine calcium supplementation can advance milk production,increase milk fat percentage of dairy cattle to improve economic efficiency.
出处
《中国畜牧兽医》
CAS
2007年第1期20-23,共4页
China Animal Husbandry & Veterinary Medicine
基金
新疆兵团重点课题"反刍动物营养调控和优化饲养"资助
关键词
糊化羟甲基蛋氨酸钙
奶牛
产奶量
乳成分
paste-hydroxymethyl-methionine calcium
diary cattle
milk yield
components of milk
