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首页> 外文会议>International Symposium on the Nutrition of Herbivores(ISNH-7); 20070917-22; Beijing(CN) >The influence of p-carotene supplementation on post-partum disease and subsequent reproductive performance of dairy cows in China
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The influence of p-carotene supplementation on post-partum disease and subsequent reproductive performance of dairy cows in China

机译：对-胡萝卜素的补充对中国奶牛产后疾病及随后生殖性能的影响

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摘要

The plasma β-carotene status of non lactating Holstein-Friesian cows in a commercial dairy was found to be deficient (mean 1.2 μg /ml). Subsequently three experiments were conducted to evaluate the influence of 300 and 500 mg β-carotene supplementation per cow per day commencing 21 days prior to expected calving date and continuing for 70 days after calving on reproductive performance and periparturient health. There were considerable fluctuations in plasma β-carotene concentrations in cows around the time of calving in both supplemented and unsupplemented animals. However plasma concentrations tended to decrease as calving approached and where at their lowest 10 days after calving. β-carotene supplements significantly decreased the incidence of retained placenta, mastitis and reduced the days from calving to first heat.
机译：发现在商业奶牛场中非泌乳荷斯坦-弗里斯兰奶牛的血浆β-胡萝卜素状态不佳（平均1.2μg/ ml）。随后进行了三项实验，以评估每头母牛每天300和500 mgβ-胡萝卜素的补充量（从预期产犊日期开始21天开始，在产犊后持续70天）对生殖性能和围产期健康的影响。在补充和不补充动物的产犊前后，母牛血浆β-胡萝卜素的浓度都有很大的波动。然而，随着产犊的临近以及产犊后的最低10天血浆浓度趋于下降。 β-胡萝卜素补充剂可显着降低胎盘滞留，乳腺炎的发生率，并减少从产犊到初次加热的时间。

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