Determination test of mating ability of three-line hybrid sow: Ⅱ
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摘要:
为了测定三系母猪的配合力，在桂粤怀集公司闸岗猪场，以W51、W52、W61和W62杂交生产4种组合的杂交母猪W211、W212、W351和W352，比较4种杂交母猪的生长发育、胴体性能和体型外貌，并以S122系公猪与以上4种杂交母猪配种，比较几种组合的繁殖性能。结果表明，不同杂交母猪的体型外貌有一定差异。W211系猪体长偏短，乳头数偏少，背膘薄，生长速度中等；W212系猪体长中等，有效乳头数较多，生长速度较快，背膘偏厚；W351系猪体长较长，有效乳头数偏少，背膘中等，生长速度偏慢；W352系猪体长最长，有效乳头数较多，生长速度较快，背膘中等。W352系猪在总产仔数、产活仔数、产健仔数和21日龄窝重等繁殖性状指标上具有较明显的优势，其配套组合的杂种优势率也较高。4种不同类型杂交母猪中，W352系猪体型高长，繁殖性能优势明显。
Abstract:In order to determinate combining ability of three-line hybrid sows, we compared growth performance, carcass performance and body conformation of four kinds of hybrid sows, including W211, W212, W351 and W352 which were produced by W51, W52, W61 and W62 lines, and four kinds of hybrid sows were mated with the S122 boar to produce commercial pigs in Zhagang pig farm of Huaiji branch of Guiyue company. The reproductive performance of different hybrid sows were compared. The results showed that there were some differences among them in terms of body conformation. The body length of W211 pig was short, teat number was less, back fat was thin and growth rate was medium. The effective teat number of W212 pig was more, body length was medium, back fat was thicker and growth rate was faster. The effective teat number of W351 pig was less, body length was longer, back fat was medium and growth rate was slower. The body length of W352 pig was the longest, effective teat number was more, back fat was medium and growth rate was faster. W352 sows had obvious advantages in terms of total litter size, number born alive, number born robust, and litter weight at the age of 21 days, and the heterosis rate of its hybrid combination was higher. Among four kinds of hybrid sows, W352 pig had a longer body length with obvious advantages of reproductive performance.
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Keywords:
- three-line hybrid sow /
- mating ability /
- determination test
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表 1 不同杂交母猪分组和配套组合情况表
组别 品系 杂交组合方式 A W211 W51×W61 B W212 W51×W62 C W351 W51×(W52×W62) D W352 W52×(W51×W62) 
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表 2 不同组杂交母猪测定性能情况
组别 类型 样本数 体长/cm 有效乳头数/个 背膘厚/mm 校正日龄/d A W211 189 118.4 13.76 12.68 162.2 B W212 194 120.9 14.03 13.72 160.4 C W351 191 123.0 13.74 13.23 165.7 D W352 193 124.3 14.43 13.29 161.7
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表 3 不同组杂交母猪后备利用情况
组别 类型 配种数 分娩数 初配日龄/d 初配体重/kg 配种分娩率/% 后备利用率/% A W211 161 141 231 134 87.6 85.2 B W212 164 146 236 136 89.0 84.5 C W351 161 142 239 143 88.2 84.3 D W352 168 152 237 141 88.5 86.1
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表 4 不同组别初胎和经产猪繁殖性能情况1)
胎次 组别 类型 分娩数 胎均总仔/头 胎均活仔/头 胎均健仔/头 21 d日龄窝重/kg 初胎 A W211 141 11.71±2.05a 10.49±1.94a 9.87±2.27a 55.47±12.76a B W212 146 11.84±2.11a 10.57±2.07a 10.05±1.87ab 56.98±11.45a C W351 142 11.78±2.09a 10.54±1.84a 9.93±1.26a 56.79±12.69a D W352 152 12.42±2.07b 11.01±2.59b 10.32±2.31b 58.89±12.78a 经产 A W211 366 11.94±1.89a 10.67±2.19a 10.19±1.74a 61.52±12.31a B W212 358 12.39±2.06ab 10.93±1.86ab 10.46±2.08ab 62.48±11.57a C W351 345 12.01±1.92a 10.72±2.16a 10.22±2.13a 63.13±11.16a D W352 387 12.85±2.01b 11.53±2.11b 10.91±2.15b 64.67±12.41a 1)相同胎次、同列数据后不同小写字母表示差异显著(P＜0.05，t检验)
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表 5 杂交母猪繁殖性能杂交优势情况
H /% 性状 类别 W211 W212 W351 W352 胎均总仔 本身 11.71 11.84 11.78 12.42 父亲 11.17 11.17 11.17 11.48 母亲 11.13 11.97 11.73 11.57 杂优率/% 5.02 2.33 2.88 7.77 胎均活仔 本身 10.49 10.57 10.54 11.01 父亲 10.16 10.16 10.16 10.34 母亲 10.07 10.39 10.37 10.28 杂优率/% 3.71 2.87 2.68 6.79 胎均健仔 本身 9.87 10.05 9.93 10.32 父亲 9.61 9.61 9.61 9.89 母亲 9.73 10.01 9.95 9.81 杂优率/% 2.07 2.45 1.53 4.77
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