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纳雍糯谷猪是中国优良的地方猪种——黔西北"可乐猪"中的一个特殊类型,除作为杂交母本在商品生产中直接利用以外,今后还可作为基本育种材料,导入不同比例的国内外猪种血统,选育出一批瘦肉型新品系。新品系的选育和推广利用既促进了地方猪种资源的保护,也给保种工作带来了挑战。优质猪肉生产为纳雍糯谷猪的利用提供了广阔的市场。 相似文献
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猪配套系育种及 湘沙猪配套系选育工作体会 总被引：1，自引：0，他引：1
本文阐述了有关猪配套系育种的概念、 关键技术环节、 育种目标的科学制定及专门化品系选育的主要方法;介绍了湘沙猪配套系选育背景、 主要育种技术措施及选育工作进展;提出了培育含地方猪种血统的优质猪配套系,有利于建立我国地方猪种繁育利用体系、 有利于促进地方猪种市场开发、 有利于地方猪种资源的科学保护、 有利于利用国外种猪的高性能加快育种进程、 有利于提升地方猪种的种质研究水平. 相似文献
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云南有丰富的地方猪种资源,这些地方猪种都具有肉质好、适应性强以及能利用农家饲料资源的优势,但其生长慢,瘦肉率低,类型复杂,性能差异大,难以适应产业化发展的需求.本文对云南地方猪种选育及改良的研究情况进行总结分析. 相似文献
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武进市的二花脸猪、金坛市的米猪和溧阳市的红灯笼猪均以高产仔性而闻名 ,为我市三大优良地方猪种。我市各级政府部门对地方猪种资源的保护与利用历来十分重视 ,特别是 70年代以来 ,各县 (辖市 )都建立了种猪场 ,开展保种选育 ;建立了家畜改良站 ,开展杂交利用 ,走出了一条品种保护与利用并举发展之路 ,有力地推动了养猪业的发展。随着改革开放、市场经济的发展 ,猪种保护与利用工作均面临诸多问题。第一 ,从经济角度看 ,种猪场承担的保种选育职能难以为继 ,纯繁比例大幅下降 ,政府补贴只能略补政策性亏损 ,育种队伍不稳 ,种猪场领导重抓效… 相似文献
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文章简要介绍了沙子岭猪优良遗传特性，总结了湘潭坚持持续保种的成功经验，重点分析了利用沙子岭猪和引入品种进行杂交优势利用和新品种配套系培育所取得的种质创新成果。提出了应持续保护沙子岭猪种质资源；利用现代生物育种技术创制新品种；健全繁育推广体系，加快育种成果转化；强化疫情防控，确保育种生物安全的观点。 相似文献
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Tsutomu Furukawa Keijiro Nirasawa Kazuo Ishii Le T. Thuy Masahiro Satoh 《Animal Science Journal》2013,84(3):200-205
Conserving pig genetic resources and improving their productivity is important to increase returns over investment in developing countries. The purebred, first‐cross, rotational cross and backcross matings representing production systems based on pig breeds indigenous to the country and exotic pig breeds were investigated. The number of pigs in the nucleus and commercial herds necessary to produce a defined quantity of pork was considered. The amount of heterosis between the indigenous and exotic breeds, superiority in meat production, and degree of inferiority in reproductive performance of the exotic breed compared with that of the indigenous breed were investigated. The number of breeding pigs in the whole system was in the following order: pure breeding (PB) > first‐cross (F1) > rotational cross (RC) > backcross (BC) systems. The number of breeding pigs in the nucleus herds of the RC and BC systems was smaller than that in the nucleus herds of the PB and F1 systems. The degree of inferiority in reproductive performance of the exotic breed compared with that of the indigenous breed affected the efficiency of the production system. 相似文献
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贵州地方猪种UCP3基因多态性与肉质性状的相关性分析 总被引：4，自引：0，他引：4
解耦联蛋白3(uncoupling protein 3,UCP3)是调节能量和脂肪代谢的重要因子。以商品猪(杂交猪)为对照,采用SSCP方法对贵州地方猪品种糯谷猪和萝卜猪的UCP3基因进行了多态性分析。结果表明:3个猪群体中,都检测到了3种基因型(AA、BB、AB),χ2独立性检验结果显示,3种基因型在3个群体间的分布不一致,糯谷猪和萝卜猪以AB基因型为主,杂交猪以BB基因型占优势,杂交猪与地方猪种之间的差异显著(P<0.01);对纯合基因型的UCP3基因片段进行克隆测序,证实AA基因型中UCP3基因外显子6编码区第842位碱基发生了单碱基突变(T→C),导致编码的氨基酸从苏氨酸突变为甲硫氨酸。进一步分析3种基因型与胴体和肉质性状之间的相关性,证明AB基因型个体的肉质最优,贵州地方猪种的大理石纹、肌内脂肪含量和嫩度3项指标显著优于商品猪(P<0.01),因此推测UCP3基因与贵州地方猪种的肉质性状具有相关性,可能是贵州地方猪种肉质性状的候选基因。 相似文献
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里岔黑猪是我国地方特色品种猪,素有"南太湖,北里岔"之称,是青岛市里岔当地养殖户长期择优纯繁、继代选育形成特色的地方品种,被誉为"国宝".其养殖历史悠久,具有腰身长,形体高,毛色全黑,瘦肉率50％左右,繁殖率高的特点.1985年被原农业部列为重点推广的优良地方猪种,现已被列为国家一类畜种资源重点保护.因此,对里岔黑猪的... 相似文献
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Jozsef RáTKY Istvan EGERSZEGI Peter TOTH Soukanh KEONUCHAN Takashi NAGAI Kazuhiro KIKUCHI Noboru MANABE Klaus-Peter BRüSSOW 《The Journal of reproduction and development》2013,59(5):437-441
Worldwide, only a few “fatty” pig breeds exist with different and/or regional
utilization. Using the Hungarian Mangalica, which almost went extinct in Europe and the
Lao Moo Lat pig, which still has a large population in South-East Asia as exemples, we
wanted to demonstrate that indigenous (fatty) pig breeds may represent both national value
and tremendous economic potential. Since these less prolific and less productive breeds
cannot contribute to mass production, new market roles and methods should be established
for them in the premium segment of pork trading. Thus their preservation and propagation
needs the comprehensive collaboration of commercial, governmental actors and researchers.
Briefly summarizing the history, we report the current results of reproductive physiology
research. The commercial renaissance of Mangalica pigs is indebted to the enthusiastic
efforts of basic scientists, pig breeding experts and dedicated Mangalica producers.
Scientific achievements were applied to practical breeding and production of delicious
pork and processed products, which ultimately made the economic success in the Mangalica
sector possible. Both, research on and utilization of endangered (pig) breeds maintain not
only breed diversities, but also may improve the livelihood of farmers worldwide. 相似文献