论文部分内容阅读
本文介绍了近几年国内外奶牛业发展的概况及存在的问题,以及相应的胚胎移植技术和性别鉴定技术的现状.
胚胎移植人工授精"孰执牛耳"性别鉴定性别控制"谁主沉浮"--浅谈奶牛繁育技术在奶牛业发展中的作用
【摘 要】
：
本文介绍了近几年国内外奶牛业发展的概况及存在的问题,以及相应的胚胎移植技术和性别鉴定技术的现状.
【机 构】
：
北京安伯胚胎生物技术中心
【出 处】
：
中国供销商情：乳业导刊
【发表日期】
：
2005年5期
其他文献
Characterizations of hereditary subalgebras generated by subsets of a C*-algebra are given through open projections.Using these results,we give some equivalent
We prove that sharply dominating Archimedean atomic lattice effect algebras can be characterized by the property called basic decomposition of elements.As an ap
Suppose that X is a complex Banach space with the norm ||·|| and n is a positive integer with dim X ≥n≥ 2. In this paper,we consider the generalized Rope
Spectra and tilings play an important role in analysis and geometry respectively.The relations between spectra and tilings have bafied the mathematicians for a
In this note, we prove the partial regularity of stationary weak solutions for the Landau- Lifshitz system with general potential in four or three dimensional s
To celebrate the 2019 Spring Festival, journalists of Life Week visited Italy, France, Denmark, India and New Zealand, to experience the charm of the food in th
Beijing, with its neighbor city, Zhangjiakou, on July 31, 2015, won the bid to host the 2022 Olympic Winter Games. The 2022 Winter Olympics will be held from Fe