共查询到18条相似文献,搜索用时 93 毫秒
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郏县红牛是我国八大肉牛良种之一,具有良好的特征特性和稳定的遗传性能,搞好郏县红牛的保种选育与开发利用具有非常重要的意义。本文以郏县红牛的发展及现状为基础,提出了郏县红牛新品系培育的技术路线、方向和方法.并就郏县红牛高档牛肉的开发提出了思路。 相似文献
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郏县红牛的保种方法与选育方向 总被引:1,自引:1,他引:0
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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本研究旨在检测郏县红牛成纤维生长因子13(fibroblast growth factor 13, FGF13)基因的拷贝数变异(copy number variation, CNV)及其与生长性状之间的相关性分析。本研究利用实时定量PCR(real-time quantitative PCR, qPCR)技术,以57头郏县红牛为研究对象,检测FGF13基因CNV,并利用皮尔逊相关分析进行FGF13基因拷贝数与郏县红牛生长性状的关联分析。结果表明,郏县红牛FGF13基因的相对拷贝数高于对照组秦川牛(P<0.05),在郏县红牛群体中,FGF13基因CNV位点存在拷贝数增加Gain,拷贝数正常Normal和拷贝数减少Loss三种类型;关联分析结果显示,FGF13基因的相对拷贝数与郏县红牛的体斜长呈显著的正相关(P<0.05)。该研究结果表明,FGF13基因的CNV位点与郏县红牛的生长性状显著相关,可作为分子标记应用于郏县红牛的分子标记辅助选择育种工作中。 相似文献
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[目的]探究郏县红牛的mtDNA D-loop遗传多样性与母系起源。[方法]采用生物信息学方法。[结果]在46头郏县红牛mtDNA D-loop区全序列共检测到60个变异位点,定义20种mtDNA D-loop单倍型,平均单倍型多样度(Hd)为0.8530,平均核苷酸多样度(Pi)为0.0254,表明郏县红牛有丰富的母系遗传多样性。构建的IQ系统发育树表明郏县红牛具有瘤牛和普通牛两个母系支系。[结论]郏县红牛具有丰富的母系遗传多样性,有普通牛和瘤牛两个母系起源。 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
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为了研究郏县红牛与不同品种肉牛杂交后代的肉用性能和肉品质情况,试验选取红安格斯牛、西门塔尔牛、夏洛莱牛与郏县红牛的杂交1代公牛各5头,纯种郏县红牛5头,分为试验A组(郏县红牛公牛)、B组(红郏F1代公牛(红安格斯牛×郏县红牛))、C组(西郏F1代公牛(西门塔尔牛×郏县红牛))和D组(夏郏F1代公牛(夏洛莱牛×郏县红牛))4个试验组,在同样的饲养管理条件下,持续育肥3个月后屠宰,利用屠宰测定和检验分析的方法对郏县红牛及其不同杂交品种的体尺发育、肉用性能和肉品质进行分析测定。结果表明:采用红安格斯牛、夏洛莱牛改良郏县红牛,在体高、体斜长、胸围和管围方面与郏县红牛纯种牛相比均无显著性差异(P>0.05);屠宰测定方面,杂交后代组的头重、皮厚、皮重、前二蹄重和尾重,屠体器官食道、气管、肝脏、脾脏、肺脏、肾脏的重量,以及胴体产肉率、眼肌面积、肉骨比与郏县红牛纯种牛相比均无显著性差异(P>0.05),但其胴体后腿宽显著高于郏县红牛纯种牛(P<0.05);红郏F1代公牛高档肉块重和优质肉块重最高,分别为70.22和105.22 kg,但高档牛肉率4组之间差异不显著(P>0.05),红郏F1代公牛优质牛肉率达到34.43%,显著高于郏县红牛和西郏F1代公牛(P<0.05),高于夏郏F1代公牛(P>0.05)。在肉品质方面,红郏F1代公牛与肉品风味有关的肌苷酸含量最高,而不饱和脂肪酸含量和与鲜味有关的氨基酸(天门冬氨酸、谷氨酸、甘氨酸和丙氨酸)含量均为夏郏F1代公牛含量最高,分别为53.85%和8.04%。结果提示,采用红安格斯牛、西门塔尔牛和夏洛莱牛改良郏县红牛,没有在体尺发育和肉用性能方面表现出显著优势,但采用红安格斯牛改良郏县红牛可提高郏县红牛肉用性能的潜力,可适度提高高档牛肉和优质牛肉肉块重量,而夏洛莱牛改良郏县红牛可适度提高牛肉品质。 相似文献
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在郏县红牛养殖业发展的过程中,由于秋冬季节的昼夜温差比较大,经常会导致郏县红牛患病。秋冬季节郏县红牛的肠道功能比较差,易出现营养吸收不良和抗病力下降的问题,导致母红牛的生产性能降低,其犊牛的成活率下降,而郏县红牛群也会出现各种传染性疾病。因此在气温下降的背景下,秋冬季节的饲养管理对促进郏县红牛场养殖业的健康发展尤为重要。 相似文献