共查询到17条相似文献,搜索用时 93 毫秒
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为了研究郏县红牛遗传育种研究进展,本文梳理了夏洛来牛、南德温牛、利木赞牛、红安格斯牛、丹麦红牛改良郏县红牛的研究进展,对郏县红牛基因多态性与生长性状的关系和基因遗传变异与生长性状的关系进行了梳理,结果表明:红安格斯牛可以提高郏县红牛的肉用性能和优质牛肉肉块重量,夏洛来牛改良郏县红牛可以提高牛肉品质;ZAG基因、IGF2基因、DGAT2基因、CLPG基因、AQP7基因可以作为生长性状辅助选择的基因,POU1F1基因第6外显子被Hinf I酶切后表现多态性,BB基因型个体可以作为生长性状辅助选择的基因,SREBP-1c基因内含子7区域84 bp缺失位点可以作为生长性状辅助选择的位点。 相似文献
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河南省宝丰县是郏县红牛的主产区.长期以来,在当地的自然和社会经济条件下,经过广大农户的精心饲养培育,郏县红牛逐渐形成了一个役用兼用型地方良种黄牛.郏县红牛在1980以后发展迅速.但在1990年以后,由于农业机械化和过量超前的宰杀,郏县红牛的数量和品质受到一定冲击.面对严峻的形势,宝丰县在省、市业务部门的大力支持下,采取有力措施,结合秸杆养牛示范县项目建设,制定了郏县红牛育种方案和发展规划,开展有组织、有计划的选育工作,使郏县红牛的选育走上了规范化道路.郏县红牛数量大幅度增加,质量明显提高,社会经济效益大幅度增加. 相似文献
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丹麦红牛以产奶量、乳脂率、乳蛋白率高及产肉性能好而闻名于世。该牛毛色紫红或红色,胸部宽深,背腰平直,后躯宽广,乳房发育良好,耐粗饲,适应性强,是著名的改良牛品种。 郏县红牛是我国八大良种黄牛品种之一,主产于河南省平顶山市的郏县、宝丰和鲁山3县,分布于毗邻的10余个县(市)、区,现存栏约28万余头,占全市牛存栏量的38%。具有被毛紫红,体质结实,结构匀称,抗病力强,繁殖率、挽力大,耐粗饲等特点,但肉用性能欠佳。在保持郏县红牛优良特性的前提下,为了增大郏县红牛体格,提高载肉量和商品率,遵照以本品种选育为主,适当导入外血(1/2~1/4)杂交改良的选育方向,制定了导入丹麦红牛冻精颗粒改良郏县红牛的实施方案,使郏县红牛由役肉兼用型向肉役兼用型方向发展。 相似文献
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周太彬 《江西畜牧兽医杂志》2005,(4):12-13
宝丰县位于河南省中西部,当地气候温暖,四季分明,年平均气温14.5℃,降水量746mm,无霜期215d,属半山丘陵县。农作物以小麦、玉米为主,是全国八大优良黄牛品种之一——郏县红牛主产区。丰富的饲草、饲料等资源优势为养牛业的发展提供了得天独厚条件。 相似文献
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以郏县红牛的历史、发展及现状为基础,综合分析了郏县红牛种质资源保护的重要性和必性,阐述了保种与选育的技术路线、方向和方法,并就应采取的具体措施提出了建议. 相似文献
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摘 要:[目的]本研究旨在从基因组水平探究隆林牛和郏县红牛的线粒体DNA(mtDNA)全基因组遗传多样性与母系起源,并对2个黄牛品种的mtDNA全基因组遗传多样性进行比较分析。[方法]采用全基因组重测序及生物信息学方法。[结果]在15头隆林牛和28头郏县红牛mtDNA全基因组序列中,共检测到36种单倍型,其中郏县红牛有26种单倍型,隆林牛仅有8种单倍型,2个黄牛品种共享2种单倍型。郏县红牛和隆林牛的平均单倍型多样度(Hd)分别为1.000和0.943,平均核苷酸多样度(Pi)分别为0.0080和0.0053,表明其遗传多样性丰富。构建的系统发育树表明,隆林牛和郏县红牛具有瘤牛和普通牛两个母系支系。[结论]隆林牛以瘤牛起源为主,郏县红牛为普通牛与瘤牛的混合起源,这2个地方黄牛品种具有独特的母系遗传信息,表现出明显的母系遗传差异。 相似文献
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ZHANG Hua-ju XU Ya-bo WANG Lin-lin SUN Bin-bin LI Zhi-gang DING Ya-jun SUN Hong-xia 《中国畜牧兽医》2017,44(12):3482-3490
In order to study the beef traits and beef quality of Jiaxian Red bull with crossbred beef cattle, 5 purebred Jiaxian Red bull, 5 Red Angus cattle×Jiaxian Red bull F1 generation, 5 Simmental cattle×Jiaxian Red bull F1 generation and 5 Charolais cattle×Jiaxian Red bull F1 generation were chosen and assigned into groups A,B,C and D for continual finishing for 3 months of age under the same feeding and management conditions and slaughtered at the end of the trial. The results showed that there were no significant difference in body height, body length, chest girth and cannon circumference between Red Angus cattle×Jiaxian Red bull F1 generation and purebred Jiaxian Red bull, the same as in Charolais cattle×Jiaxian Red bull F1 generation (P>0.05). The weight of head, skin, fore hooves and tail, the skin thick, esophagus, trachea, liver, spleen, lung, kidney, and carcass meat percentage, loin eye area and the meat bone ratio in crossbred beef cattle groups were not significant differences compared with purebred Jiaxian Red bull (P>0.05), but its hind legs wide in carcass was significantly higher than that of purebred Jiaxian Red bull (P<0.05). The high-grade meat weight and high quality meat weight in Red Angus cattle×Jiaxian Red bull F1 generation were 70.22 and 105.22 kg, respectively, and was the highest in four groups,but the high-grade beef percentage among four groups did not show significant differences (P>0.05). The high quality meat percentage in Red Angus cattle×Jiaxian Red bull F1 reached 34.43%, was significantly higher than that of Jiaxian Red bull and Simmental cattle×Jiaxian Red bull F1 generation (P<0.05), and was higher than that of Charolais cattle×Jiaxian Red bull F1 generation (P>0.05). In terms of meat quality, the content of inosinic acid that related with the meat flavor in Red Angus cattle×Jiaxian Red bull F1 was the highest in four groups, while the content of unsaturated fatty acid and the flavor related amino acid, such as aspartic acid, glutamic acid, glycine and alanine, in Charolais cattle×Jiaxian Red bull F1 were the highest in four groups,and their values were 53.85% and 8.04%, respectively. To sum up, the results suggested that there was no significant difference in body development and beef traits using Red Angus cattle, Simmental cattle and Charolais cattle to improve Jiaxian Red bull, while Red Angus cattle crossbred with Jiaxian Red bull could moderately improve the weight of high-grade beef and high-quality beef, and Charolais cattle could moderately improve the beef quality of Jiaxian Red bull. 相似文献