数字农科院2.0

Effects Of Dietary Fat Sources During Late Gestation On Colostrum Quality And Mammary Gland Inflammation In Lipopolysaccharide-Challenged Sows

文献类型： 外文期刊

作者： Zou, TD; Wei, WZ; Cao, SC; Zhang, HF; Liu, JB

作者机构：

关键词： colostrum; fat; inflammatory response; lipopolysaccharide; mammary gland

期刊名称： ANIMALS

ISSN： 2076-2615

年卷期： 2020 年 10 卷 2 期

页码：

收录情况： JCR（2021版）

摘要： Simple Summary In the present study, late gestating sows were challenged with lipopolysaccharide (LPS) endotoxin, which can impair the immune system of mammary gland cells and result in an inflammatory response. Additionally, the LPS-treated sows were fed 3% soybean oil (SO), 3% coconut oil (CO) or 3% fish oil (FO) diets and were used to study the effect of fat sources on the colostrum quality and mammary gland inflammation of sows exposed to immune challenge. The results show that FO inclusion exerted anti-inflammatory effects in mammary glands and counteracted the LPS-induced damaged colostrum synthesis and pro-inflammatory response when compared to CO diets. These findings suggest that fatty acid profiles of different oil types in late gestation differentially affect metabolic health in sows, but a longer period of FO supplementation to sows is needed to determine a positive effect on piglets. This study aimed to investigate the effects of maternal lipopolysaccharide (LPS) challenge and dietary fat sources on colostrum quality and inflammatory response in sows. Sixty Landrace x Yorkshire sows were randomly assigned to three dietary treatments supplemented with 3% soybean oil (SO), 3% coconut oil (CO) or 3% fish oil (FO), respectively, from Day 90 of gestation until parturition. On Day 112 of gestation, half the sows from each dietary treatment were challenged with LPS (10 mu g/kg BW) or saline. The results showed that maternal LPS challenge decreased colostrum yield and dry matter content. A similar pattern of changes was observed for body weight gain and colostrum intake in piglets from LPS-challenged sows. Maternal LPS challenge increased the levels of tumor necrosis factor alpha (TNF alpha), interleukin 1 beta (IL1 beta) and IL6 in colostum, and the mRNA abundance of IL6, IL1 beta and TNF alpha and the phosphorylation level of p65 in mammary glands. However, the responses of these variables to LPS treatment were lower in sows fed a FO diet. In conclusion, maternal immune challenge reduced the growth performance of piglets by decreasing colostrum yield and intake by piglets, and dietary supplementation with FO in sows attenuates the LPS-induced inflammatory response in mammary glands.

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