Mitsuishi Hiroki, Yayota Masato
The United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan.
Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan.
Animals (Basel). 2024 Jul 22;14(14):2133. doi: 10.3390/ani14142133.
β-carotene supplementation improves the reproductive performance of cattle. However, the research results on this topic have been inconsistent, and no clear conclusion has been reached. In previous reviews of this topic, the functional mechanism of β-carotene in reproduction remained unclear, but subsequent studies have shown that the antioxidant effects of β-carotene protect enzymes involved in ovarian sex steroid hormone production from the effects of oxygen radicals. This role consequently affects normal ovarian follicle dynamics, maintenance of luteal function, and the estrous cycle, and indirectly improves reproductive performance by preventing perinatal diseases and facilitating recovery from these diseases. Several factors must be considered in feeding management to determine whether β-carotene supplementation is effective for improving reproductive performance in cows. The same is true when the animal consumes a large amount of the antioxidant β-carotene due to lactation, aging, or season. Therefore, it is important to consider the balance between the supply and consumption of β-carotene and evaluate whether β-carotene supplementation has an effect on reproductive performance in cows.
补充β-胡萝卜素可提高母牛的繁殖性能。然而，关于这一主题的研究结果并不一致，尚未得出明确结论。在以往对该主题的综述中，β-胡萝卜素在生殖中的功能机制尚不清楚，但后续研究表明，β-胡萝卜素的抗氧化作用可保护参与卵巢性甾体激素产生的酶免受氧自由基的影响。这一作用进而影响正常的卵巢卵泡动态、黄体功能的维持以及发情周期，并通过预防围产期疾病和促进从这些疾病中恢复来间接提高繁殖性能。在饲养管理中必须考虑几个因素，以确定补充β-胡萝卜素是否对提高奶牛的繁殖性能有效。当动物由于泌乳、衰老或季节因素而摄入大量抗氧化剂β-胡萝卜素时，情况也是如此。因此，考虑β-胡萝卜素的供应与消耗之间的平衡，并评估补充β-胡萝卜素是否对奶牛的繁殖性能有影响非常重要。
