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首页> 外文期刊>Journal of dairy science >Effect of Trace Mineral Source on Lactation Performance, Claw Integrity, and Fertility of Dairy Cattle
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Effect of Trace Mineral Source on Lactation Performance, Claw Integrity, and Fertility of Dairy Cattle

机译：微量矿物质源对乳牛泌乳性能，爪完整性和育性的影响

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Two hundred fifty multiparous and primiparous cows were assigned to a study at approximately 70 d prepar-tum to determine the effect of trace mineral source on lactation performance, claw integrity, and fertility. Cows received treatments from 3 wk prepartum through wk 35 postpartum. Treatments consisted of 1) all supplemental Zn, Mn, Cu, and Co provided in sulfate form (Sulfate) and 2) 360 mg of Zn, 200 mg of Mn, 125 mg of Cu, and 12 mg of Co supplied daily by Sulfate minerals replaced with similar amounts of minerals supplied by Availa-4 (CTM). Individuals involved with daily animal care or data recording, or both, were blinded to treatment assignments. Cows from all treatments were housed in common pens, and treatments were dispensed to cows via a computerized feeder. All claws of cows were examined before treatment administration and at 16 and 36 wk postpartum by personnel trained in identifying claw lesions. Cows fed the CTM diet tended to produce more milk and energy-corrected milk than cows fed the Sulfate diet. Cows fed the CTM diet also produced more milk protein and solids (fat + protein) than cows fed the Sulfate diet. Replacing Sulfate minerals with those supplied by CTM decreased incidence of sole ulcers at wk 36 postpartum and tended to decrease incidence of interdigital dermatitis at wk 16 and 36 postpartum. Severity of heel erosion tended to be less for cows fed CTM than cows receiving the Sulfate diet. Despite first service conception rates tending to be greater for cows fed the Sulfate diet, there was no effect of treatment on rate of conception. A greater percentage of cows fed the Sulfate diet tended to be culled from the herd before wk 36 postpartum than cows fed the CTM diet. Replacing Sulfate minerals with CTM resulted in improved lactation performance and claw integrity.
机译：在大约70 d前期，将250头多胎和初生母牛用于研究，以确定微量矿物质源对泌乳性能，爪的完整性和繁殖力的影响。母牛从产前3周到产后35周接受治疗。处理包括1）所有以硫酸盐形式（硫酸盐）提供的补充锌，锰，铜和钴，以及2）每天由硫酸盐矿物质提供的360毫克锌，200毫克锰，125毫克铜和12毫克钴替换为Availa-4（CTM）提供的类似数量的矿物质。涉及日常动物护理或数据记录，或两者兼有的个人，对治疗任务不知情。所有处理的母牛都放在普通的围栏中，并通过计算机喂食器将处理分配给母牛。在治疗前和产后16周和36周时，由训练有素的母牛病变检查人员检查所有母牛的爪。饲喂CTM日粮的母牛比饲喂硫酸盐日粮的母牛倾向于产生更多的牛奶和能量校正的牛奶。饲喂CTM日粮的母牛比饲喂硫酸盐日粮的母牛还产生更多的牛奶蛋白和固体（脂肪+蛋白质）。用CTM提供的矿物质代替硫酸盐矿物质可降低产后36周时唯一溃疡的发生率，并倾向于降低产后16周和36周时趾间皮炎的发生率。饲喂CTM的母牛的脚跟侵蚀严重程度往往比接受硫酸盐饮食的母牛少。尽管饲喂硫酸盐饮食的母牛的初次受孕率往往更高，但是治疗对受胎率没有影响。饲喂硫酸盐饮食的母牛，产后第36周之前倾向于从牛群中淘汰，而饲喂CTM饮食的母牛则更大。用CTM替代硫酸盐矿物质可改善泌乳性能和爪的完整性。

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