摘要
本研究用夏洛来、边区来斯特与河北细毛羊进行经济杂交,探讨河北细毛羊的最佳经济杂交组合.夏洛来杂种公、母羔和边区来斯特杂种公羔5月龄体重达到或接近25kg;7月龄都达30kg以上,与河北细毛羊母羔(25.64kg)差异极显著(P<0.01).少量补饲与放牧的对比试验,河北细毛羊放牧组体重(29.48kg)最小,与其它组比较差异极显著(P<0.01),少量补饲组和放牧组都以夏洛来杂种羔体重最大,分别是39.25和35.59kg.1994年草场较好,7月龄放牧的夏洛来杂种羔体重达39.89kg.夏洛来杂种羔胴体重达17.90kg,超过了发达国家1992年出栏羊平均胴体重16kg的水平,结论是夏洛来羊是河北细毛羊理想的经济杂交父本.
The present study was undertaken to lind optimal cross combination of Hebei finewoos sheep val commercial cross with surnames of Charolai and Border Leicester being maleparents.The results showed that the mean body weight(MBW)of Charolai fivemonth–oldcross–breed lanmbs and Border Leicester five–month–old cross–breed ram lambs reached orapproached 25kg,and that of seven–month–old ones was over 30kg,being significantly high-er(P<0.01)than that of Hebei fine wool ewe lambs which was 25.64kg.The coparative exper-iment of small amount feeding(SAF)and Grazing(G)revealed significantdifferences(P<0.01)between every testing groups in which the MBW of Hebei fine woolsheep G group lambs was the lowest,both that of SAF.group and that of Gvgroup ofCharolai cross–breed lambs was he highest(39.25 and 35.59kg).With better Pasture in 1994,the MBW of Charolai grazig cross–breed lambs eached 39.89kg,while their mean carcassweight(MCW)reached 17.9kg over the world mean standard(16kg)of marketing sheep of alldeveloped countries in 1992.At last a conclustlon was put for ward that Charolai was theoptimum paternity for Hebei fine wool sheep commercial cross breeding.
作者
郭钢
孔祥浩
王俊杰
李惠珍
郭金双
张淑萍
桑润滋
李建国
王凤鸣
曹玉凤
Guo Gang;Kong Xianghao;Song Runzi;Li Jianguo(Department of Husbandry,Zhang jiakou 075131;Hebei Agricultural University,Baoding 071001)
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1995年第S1期174-177,共4页
Journal of Hebei Agricultural University
关键词
细毛羊
经济杂交效果
最佳经济杂交组合
Fine wool sheep
Commercial cross effect
Optimum cross combination
