“内黄肉山羊”新品种(系)选育技术规范

来源 :河南畜牧兽医 | 被引量 : 0次 | 上传用户:mldn
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
以内黄本地槐山羊及其部分杂交羊为母本,以波尔山羊为父本,级进杂交至三代左右,选择优秀个体同质选配、横交固定、建立品系,培育"内黄肉山羊"新品种(系).文中推荐了理想型的标准,介绍了杂交的组织、选配方法、杂种的选择、横交固定及近交的应用、扩繁提高方法,提出了三级繁育体系.
其他文献
政府资产管理作为国有资产管理的重要组成部分,也是财政预算管理的重要组成部分,对于保证政府正常运转发挥着重要的作用。长时间以来,我国政府资产管理还存在许多问题,本文在
The periorbital area is the third highest-ranking area for cosmetic surgery. However, surgery in this area presents a number of difficulties and safety concerns
Introduction: In the setting of an extra-adrenal malignancy, it is a recognized clinical challenge to try and distinguish a benign adrenal mass from a metastati
Introduction :Infantile haemangiomas are the most common benign vascular tumours of infants. In Western countries, they have been the subject of several studies
The inflammatory and fibrous responses to injuries are painful and are inhibitory to the regeneration of specialized cells. The fibrous scarring of skin injurie
Many countries in the world wide banned hydroquinone in cosmetics skin lightening but it is still used in most of Africa countries, including Sudan. Few studies
Background: Exposure to solar UV rays has deleterious effects on skin appearance through physiological and structural alterations that eventually lead to skin p
1波尔山羊原产于南非干旱亚热带,一个优良的大型肉用山羊品种.波尔山羊的特征为:头大,鼻大,鼻梁隆起,前额突出,眼为棕色,头耳红棕色,额部角基至鼻梁呈白色流星状.角色深棕近
In this study, our objective was to evaluate the antioxidant, cytotoxicity and collagen synthesis activity in vitro and also to test the anti-wrinkle effect of
健康家畜体液酸碱度应维持在7.35~7.45范围之内,一旦体液酸碱度超出正常范围,就会发生酸碱平衡紊乱,表现为酸中毒或碱中毒.动物体酸中毒的情况比较常见,而在影响动物体液酸碱