【摘要】 目的对广州地区西藏小型猪的繁殖性能和繁殖行为进行了观察研究。方法以广州地区雌雄西藏小型猪为研究对象,根据其繁殖卡的详细资料进行分类统计。结果雄性西藏小型猪阴茎首次伸出日龄为(39.50±2.63)d,此时体重为(3.26±0.87)kg;其射精日龄为(65.22±3.69)d,体重为(5.34±1.03)kg。雌性西藏小型猪初情日龄为(142±5.3)d,成年母猪发情周期为(20.35±0.72)d,发情持续期(4.2±0.31)d;其妊娠期约为114 d左右。初产雌性西藏小型猪产仔数为(2.30±0.82)头,2月龄断乳存活率为86.5%;而经产雌性西藏小型猪产仔数为(5.70±1.00)头,其2月龄断乳存活率为91.4%。哺乳期雌性西藏小型猪母性强,护仔行为强烈。结论广州地区西藏小型猪生长发育繁殖正常,产仔率和2月龄存活率等繁殖性能指标与原产地一致。更多还原

【Abstract】 Objective To study the breeding performance and reproductive behavior of Tibet mini-pigs raised in Guangzhou area.Methods Tibet mini-pigs in Guangzhou were observed and statistically classified according to the data of the breeding cards.Result The first time of stretching out of male Tibet mini-pigs was 39.50±2.63 day_old and the weight was 3.26±0.87 kg,while their first ejaculation appeared until 65.22±3.69 day_old and the weight was 5.34±1.03 kg.The first oestrus of female Tibet mini-pigs was 142±5.3 day_old.The oestrus period of adult female Tibet mini-pigs was 20.35±0.72 days and it lasted 4.2±0.31 days.The gestation period of Tibet mini-pigs was about 114 days.The offspring number per litter of primiparous female Tibet mini-pigs was 2.30±0.82 heads and the 2 month ablactation livability was 86.5%;while the offspring number per litter of multiparous Tibet mini-pig was 5.70±1.00 heads and the 2 month ablactation livability was 91.4%.The female Tibet mini-pigs manifested great maternity during lactation.Conclusion The growth,development and multiplication of Tibet mini-pigs in Guangzhou area are normal,and the important indexes of breeding performance such as the offspring number per litter and 2 month ablactation livability coincided with those of Tibet mini-pigs from their provenance.更多还原