【摘要】 黔北黑猪二世代种母猪产头胎后，转点至贵州农学院作繁殖性状观察，其结果是杂交比纯繁繁殖性状各项指标均有提高；与该猪“七五”期间繁殖性状各指标相比，均有提高；特别是纯繁的泌乳力、断奶窝重与杂交断奶窝重“八五”大于“七五”。经ｔ检验，差异显著或极显著（Ｐ＜０．０５和Ｐ＜０．０１）。更多还原

【Abstract】 After the first littering, the sow of Qianbei Black F2 were moved to Guizhou agricutural college for observation of reproduction traits. The experiments indicated the total reproduction traits of cross breeding group were better that of pure breeding group. In comparison with "The Seventh Five Year Plan" period, the reproduction traits of pure breeding pigs during "The Eighth Five Year Plan" period were much improved, especially for milking yield of sows and weanling litter weight. According to the statistical analysis the difference was very significant (P<0.01) or significant (P<0. 05).更多还原