Department of Animal Science, Texas A&M University, College Station 77843.
J Anim Sci. 2013 Oct;91(10):4679-83. doi: 10.2527/jas.2013-6227. Epub 2013 Aug 29.
Production records from 291 Boer-Spanish and Spanish does, collected between 1994 and 2004 in the Edwards Plateau region of West Texas, were examined to compare Boer-Spanish and Spanish does for body weights, fertility, prolificacy, and number of kids weaned. Traits were analyzed using single-trait mixed models. Boer-Spanish does were heavier at birth than Spanish does (2.79 vs. 2.67 kg, P = 0.05) but similar weight at weaning (15.2 vs. 15.0 kg, P = 0.59). Boer-Spanish does had a heavier body weight at breeding than Spanish does (46.5 vs. 43.5 kg, P < 0.01). Boer-Spanish does had similar fertility over 8 annual breeding seasons (0.87 vs. 0.84, P = .22). Boer-Spanish does had an advantage over Spanish does for fertility to a 30-d breeding season (0.53 vs. 0.48; P = .09). Boer-Spanish does produced more kids than Spanish does (1.70 vs. 1.62, P = .09). Boer-Spanish does weaned a similar number of kids (1.30 vs. 1.31, P = .76). Age of doe significantly affected (P < 0.05) both number of kids born and number of kids weaned, with older does giving birth to, and weaning, more kids. Boer-Spanish does had greater birth weight, body weight at breeding, and number of kids born than Spanish does. Boer-Spanish does had a similar number of kids weaned as Spanish does.
从 1994 年至 2004 年在德克萨斯州西部的爱德华兹高原地区收集的 291 只布尔西班牙和西班牙母羊的生产记录被检查，以比较布尔西班牙和西班牙母羊的体重、繁殖力、繁殖力和断奶羔羊数。使用单性状混合模型分析性状。布尔西班牙母羊出生时比西班牙母羊重（2.79 公斤对 2.67 公斤，P=0.05），但断奶时体重相似（15.2 公斤对 15.0 公斤，P=0.59）。布尔西班牙母羊在繁殖时比西班牙母羊重（46.5 公斤对 43.5 公斤，P<0.01）。布尔西班牙母羊在 8 个年度繁殖季节的繁殖力相似（0.87 对 0.84，P=0.22）。布尔西班牙母羊在 30 天繁殖季节的繁殖力比西班牙母羊有优势（0.53 对 0.48；P=0.09）。布尔西班牙母羊比西班牙母羊产的羔羊多（1.70 对 1.62，P=0.09）。布尔西班牙母羊断奶的羔羊数量相似（1.30 对 1.31，P=0.76）。母羊年龄显著影响（P<0.05）出生羔羊数量和断奶羔羊数量，年龄较大的母羊产仔和断奶的羔羊更多。布尔西班牙母羊的初生重、繁殖时体重和产仔数均大于西班牙母羊。布尔西班牙母羊的断奶羔羊数与西班牙母羊相似。
