产前补充L-色氨酸对荷斯坦奶牛产后性能的影响。
Effects of Prepartum L-Tryptophan Supplementation on the Postpartum Performance of Holstein Cows.
作者信息
Liu Xuening, Yao Songyang, Liu Yunjie, Han Huigang, Wang Weijia, Yi Qi, Yan Laiqing, Ji Pengyun, Zhang Lu, Liu Guoshi
机构信息
Beijing Key Laboratory for Animal Genetic Improvement, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
出版信息
Animals (Basel). 2024 Apr 24;14(9):1278. doi: 10.3390/ani14091278.
The negative energy balance occurring in the periparturient period of cows will impede their health and postpartum performance. To target this issue, L-tryptophan was supplied to the prepartum cows. The results showed that L-tryptophan supplementation significantly increased the serum melatonin level and was accompanied with increases in SOD activity, IL-10 and colostrum IgA levels as well as decreases in MDA and IL-6 levels compared to the control cows. The incidence of postpartum diseases was significantly lower and the pregnancy rate was significantly higher in cows fed L-tryptophan than in the control group. A striking observation was that prepartum L-tryptophan supplementation not only improved the milk production but also the quality compared to the control cows. In general, supplementation with L-tryptophan in the prepartum period can improve the postpartum reproduction and lactation performance of cows to some extent.
奶牛围产期出现的负能量平衡会妨碍其健康和产后性能。为解决这一问题，向产前奶牛补充了L-色氨酸。结果表明，与对照奶牛相比，补充L-色氨酸显著提高了血清褪黑素水平，同时超氧化物歧化酶（SOD）活性、白细胞介素-10（IL-10）和初乳免疫球蛋白A（IgA）水平升高，丙二醛（MDA）和白细胞介素-6（IL-6）水平降低。与对照组相比，补充L-色氨酸的奶牛产后疾病发病率显著降低，妊娠率显著提高。一个显著的发现是，与对照奶牛相比，产前补充L-色氨酸不仅提高了产奶量，还提高了牛奶质量。总体而言，产前补充L-色氨酸可在一定程度上改善奶牛的产后繁殖和泌乳性能。
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