Effects of 25-hydroxycholecalciferol supplementation in maternal diets on reproductive performance and the expression of genes that regulate lactation in sows
文献类型： 外文期刊
作者： Wang, Kai 1 ; Chen, Yun 1 ; Zhang, DeLong 2 ; Wang, RongGen 1 ; Zhao, ZhiHong 1 ; Feng, MeiYing 3 ; Wei, HengXi 1 ; Li, L 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, 483 Wushan Rd, Guangzhou 510642, Guangdong, Peoples R China
2.Xinjiang Agr Univ, Coll Anim Sci, Urumqi, Peoples R China
3.Zhaoqing Univ, Coll Life Sci, Zhaoqing, Peoples R China
关键词： calcium; colostrum; key genes regulating lactation; oestrus: phosphorus; vitamin D sufficiency
期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）
ISSN： 1344-3941
年卷期： 2020 年 91 卷 1 期
页码：
收录情况： SCI
摘要： One hundred Yorkshire x Landrace sows were randomly assigned to one of two dietary treatments (diet ND: 6,000 IU vitamin D-3/d feed; diet 25-D: 200 mu g/day 25OHD(3) feed). The experiment began on d 90 of gestation and continued until weaning on day 21 of lactation. In sows that received 25OHD(3), the growth rate of the piglets before weaning was significantly accelerated (0.266 kg/day, p <.05). Sow serum was collected after weaning, and those in the 25OHD3 group were found to have significantly higher serum calcium (CA) and phosphorus (PI) levels (p <.05). Interestingly, the oestrus cycle of sows fed 25OHD(3) was significantly shortened (p <.05), the oestrus time was concentrated on the fifth day after weaning, and the piglets were born with a higher degree of uniformity (p <.05). Colostrum was collected on the day of delivery, and the colostrum of sows fed 25OHD(3) contained higher milk fat content than the control group (p <.05). 25OHD(3) supplementation increased the mRNA and protein expression of INSIG1 and SREBP1, which regulate milk fat synthesis, in the mammary gland of lactating sows (p <.05). In conclusion, 25OHD(3) supplementation in maternal diets improved reproductive performance, milk fat content and the mRNA and protein levels of genes regulating milk fat synthesis in lactating sows.
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