怎样搞好空怀母猪的饲养管理?

2025年03月15日 18:43
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网友(1):

(1)将断奶的母猪小群饲养(一般每圈3~5头),小群饲养的母猪可以自由活动,特别是设有舍外运动场的圈舍,有利于母猪的发情和配种,尤其对初产母猪,效果更好;初产青年母猪产后不易再发情,主要是体况较弱造成的。因此,要为体况差的青年母猪提供充足的饲料,以缩短配种时间,提高受胎率。配种后,立即减少饲喂量到维持水平。对于正常体况的空怀母猪每天的饲喂量为1.8千克。

在炎热的季节,母猪的受胎率常常会下降。一些研究表明,在日粮中添加一些维生素,如维生素B12、维生素E,可以提高受胎率。

(2)断奶2~3天后,实行短期优饲,每日喂饲料3~4千克,有利于母猪恢复体况和促进母猪的发情和排卵;对于初产母猪,还要在断奶后肌注孕马血清促性腺激素(PMSG)进行药物催情,以解决初产后发情延迟和二胎产仔少。

(3)做好母猪发情观察和发情鉴定,并适时做好配种;每天早晚两次观察记录空怀母猪的发情状况。喂食时观察其健康状况,及时发现和治疗猪病。

(4)提供一个干燥、清洁、温湿度适宜、空气新鲜的环境。空怀母猪如果得不到良好的饲养管理条件,将影响发情排卵和配种受胎。

(5)对于断奶后乏情、异常发情和反复发情的母猪要给予更多的关注,可采用公猪诱情、应激法刺激发情和药物催情。①给不发情的母猪肌注孕马血清促性腺激素(PMSG),发情后配合肌注绒毛膜促性腺激素(HCG);②用乙烯雌酚按每头2毫升的剂量给不发情母猪注射,并在配种前注射促排卵3号(LRH-A3)的方法促使母猪发情、排卵并受孕,若这些措施都不能使母猪发情配种,要尽快淘汰。

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