VetSRev
Database of veterinary systematic reviews
Database of veterinary systematic reviews
Journal of Animal and Feed Sciences (2021) 30: 260–270
DOI: 10.22358/jafs/138774/2021
Selenium is an essential trace element for pig growth; generally, inorganic or organic selenium is used for dietary selenium supplementation. Newborn piglets obtain all nutrients from the sow; thus, the sow absorption rate of different selenium sources significantly affects sow reproductive performance and piglet development. Therefore, a meta-analysis was performed to provide insights into whether organic selenium is better than mineral selenium for improving sow reproductive performance and piglet development. The present study investigated the effects of different selenium sources in sow feed using articles published between June 1, 1980, and December 31, 2020, from four databases. In the meta-analysis, 19 articles (347 sows) from seven countries were included. It was shown that feeding organic selenium to sows during pregnancy significantly increased newborn piglet weight (P \textless 0.05), piglet weight at weaning (P \textless 0.05), litter weight at weaning (P \textless 0.01), selenium content in sow colostrum (P \textless 0.01), milk (P \textless 0.01) and serum (P \textless 0.01); and selenium content (P \textless 0.01) and glutathione peroxidase activity (P \textless 0.05) in piglet serum. However, it had no effect on the number of live-born piglets and litter weight at birth. Owing to study heterogeneity (I^\textrm2 \textgreater 50%), we hypothesized that the sow breed or weaning age were the influencing factors. Publication bias and sensitivity analyses indicate that the present results are robust. Further research is needed to better understand how different selenium sources affect sow reproduction and piglet development.
Zhou, S. Y., Wu, B. X., Liu, Z., & Zhang, T. J. (2021). Effects of different selenium sources on sow reproductive performance and piglet development: a meta-analysis. Journal of Animal and Feed Sciences, 30(3), 260–270. https://doi.org/10.22358/jafs/138774/2021 pregnancy, Animal Reproduction and Embryology [LL250], female fertility, gestation, hogs, litter weight, pigs, reproductive performance, sows, swine, meta-analysis, Animal Nutrition (Production Responses) [LL520], Food Composition and Quality [QQ500], performance traits, Animal Nutrition (Physiology) [LL510], diets, Mathematics and Statistics [ZZ100], birth weight, Meat Producing Animals [LL120], weaning weight, microelements, trace elements, milk, Milk and Dairy Produce [QQ010], reproduction, maternal nutrition, feed supplements, weaning, glutathione peroxidase, peroxidase, piglets, selenium, newborn animals, milk components, milk composition, milk constituents, milk quality, sow colostrum, sow feeding, sow milk