Peña F J, Domínguez J C, Alegre B, Peláez J
Department of Reproduction and Obstetrics, Faculty of Veterinary Medicine, University of León, Campus de Vegazana, Spain.
Anim Reprod Sci. 1998 Jun 30;52(1):63-9. doi: 10.1016/s0378-4320(98)00083-9.
The aim of this study was to determine the effects of injecting 5 mg of PGF2alpha into the vulvar mucosa on the reproductive performance of sows maintained under field conditions. At an intensively managed piggery in northwest Spain, two experimental groups were formed randomly and observed throughout the year. The first group comprised sows receiving simultaneously, with every insemination, 5 mg of PGF2alpha injected into the vulvar lips. Group 2 sows received 1 ml of saline solution injected into the vulvar lips at insemination and served as the controls. The farrowing rates for each group were 78.46 and 54.39, while the litter sizes were 10.72 +/- 0.27 and 9.14 +/- 0.47 during the low fertility season (July-September). During the rest of the year (October-June), the farrowing rates were 83.91 and 80.93, while the litter sizes were 11.16 +/- 0.15 and 9.99 +/- 0.15. We conclude that injection of 5 mg of PGF2alpha into the vulvar lips at insemination is an effective method of compensating for the low fertility together with the decreased litter size of the summer months.
本研究的目的是确定在外阴黏膜注射5毫克前列腺素F2α对在田间条件下饲养的母猪繁殖性能的影响。在西班牙西北部一个集约化管理的猪场，随机形成两个实验组并全年观察。第一组母猪在每次输精时同时接受在外阴唇注射5毫克前列腺素F2α。第2组母猪在输精时接受在外阴唇注射1毫升盐溶液，并作为对照。在低繁殖力季节（7月至9月），每组的产仔率分别为78.46和54.39，窝产仔数分别为10.72±0.27和9.14±0.47。在一年中的其余时间（10月至6月），产仔率分别为83.91和80.93，窝产仔数分别为11.16±0.15和9.99±0.15。我们得出结论，在输精时在外阴唇注射5毫克前列腺素F2α是一种有效方法，可弥补夏季繁殖力低下和窝产仔数减少的问题。
