摘要:
为了测定杜洛克×陆川（杜陆）二元母猪产仔性能及其与川乡黑猪杂交后代毛色情况，本研究记录了海南省3个川乡×杜洛克×陆川（川杜陆）三元商品猪生产场在2022年1月至2023年6月期间的共计5 862窝有效繁殖情况，根据胎次和猪场对母猪产仔性能进行了比较，并统计了三元商品猪的毛色性状。结果显示：总产仔数、产健仔数及初生窝重在不同猪场间存在差异显著（P <0.05）。胎次比较发现2、3、4、5胎的总产仔数和产健仔数差异不显著（P> 0.05），第1胎的各项指标显著低于其他胎次（P <0.05）,6胎及以上的指标也与其他胎次差异显著（P <0.05）。第4胎的窝重显著低于其他胎次，而第2胎窝重显著高于其他胎次（P <0.05）。试验组所产仔猪主要为黑毛色，少数为红毛色，极个别为白毛色，平均黑毛色比例达98.79%。综上所述，不同猪场间母猪的产仔性能有显著性差异，2～5胎母猪繁殖力强，仔猪初生窝重有显著差异性；川杜陆三元商品猪绝大多数为黑毛色。
Abstract:
In order to determine the litter performance of Duroc×Luchuan（Dulu） binary sows and the coat color of their crossbred offspring with Chuanxiang black pigs, a total of 5 862 litters wtih effective breeding was recorded at three Chuanxiang×Duroc×Luchuan（Chuandulu） ternary commercial pig production farms in Hainan Province from January 2022 to June 2023. The litter performance of sows was compared according to parity and pig farm, and the coat color traits of ternary commercial pigs were counted. The results showed that there were significant differences in total litter size, healthy litter size and litter weight among different farms（P ＜0.05）. Comparison of litter sizes revealed no significant difference in total litter size and number of healthy piglets born in litters 2, 3, 4 and 5（P ＞ 0.05）. The indicators of the first parity were significantly lower than those of other parities（P ＜ 0.05）, and the indicators of the 6th parity and above were also significantly different from those of other parities（P ＜ 0.05）. The 4th parity was significantly lower in litter weight than the other parities, while the 2nd parity was significantly higher in litter weight than the other parities（P ＜ 0.05）. The piglets born in the experimental group were mainly black in coat color, with a few being red, and very few being white in coat color,and the average proportion of piglets with black coat color reached 98.79%. In conclusion, there were significant differences in the litter performance of sows among different farms, sows with 2-5 parities were highly fertile, and piglets at birth were significantly different in litter weights; the vast majority of Chuandulu ternary commercial pigs were black in coat color.
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