Piñán Javier, Martinez-Pastor Felipe, Alegre Beatriz, Maj Magdalena, Kirkwood Roy N, Domínguez Juan Carlos, Manjarín Rodrigo
Institute of Animal Health and Cattle Development (INDEGSAL), Universidad de León, 24071 León, Spain.
Department of Molecular Biology (Cell Biology), Universidad de León, 24071 León, Spain.
Animals (Basel). 2021 Nov 6;11(11):3176. doi: 10.3390/ani11113176.
Suinfort, a commercial semen supplement demonstrated to increase fertility and litter size in commercial sows, was tested to improve reproductive performance in Iberian sows. A total of 1430 Iberian sows were artificially inseminated (AI) with semen from Duroc boars and assigned by parity to receive the seminal additive Suinfort containing 2 IU oxytocin, 5 µg lecirelin, and 2 mM caffeine (SF; = 1713 AI), or to serve as non-supplemented controls (CON; = 2625 AI). CON showed a lower fertility comparing to winter for spring ( = 0.001) and summer ( < 0.001); summer was lower than autumn ( = 0.012). SF removed this seasonal effect ( > 0.05). Fertility was significantly higher for SF sows during summer ( = 0.025) and autumn ( = 0.004). Total born, live-born, stillborn, and mummified piglets did not differ between CON and SF but were impacted by the season, with total and live-born decreasing in summer compared with autumn ( < 0.001) and winter ( = 0.005). In conclusion, seminal supplementation with Suinfort improved the fertility of Iberian sows during periods of seasonal infertility.
已证实，商业精液补充剂Suinfort可提高商品母猪的繁殖力和窝产仔数，本研究对其进行测试，以改善伊比利亚母猪的繁殖性能。总共1430头伊比利亚母猪用杜洛克公猪的精液进行人工授精（AI），并根据胎次分组，一组接受含有2 IU催产素、5 µg来普瑞林和2 mM咖啡因的精液添加剂Suinfort（SF组；n = 1713次人工授精），另一组作为未添加添加剂的对照组（CON组；n = 2625次人工授精）。CON组春季（P = 0.001）和夏季（P < 0.001）的繁殖力低于冬季；夏季低于秋季（P = 0.012）。SF组消除了这种季节性影响（P > 0.05）。SF组母猪在夏季（P = 0.025）和秋季（P = 0.004）的繁殖力显著更高。CON组和SF组的总产仔数、活产仔数、死产仔数和木乃伊化仔猪数没有差异，但受季节影响，夏季的总产仔数和活产仔数与秋季（P < 0.001）和冬季（P = 0.005）相比有所减少。总之，在季节性不育期间，用Suinfort补充精液可提高伊比利亚母猪的繁殖力。
