منابع مشابه
Artificial Insemination in Dairy Cattle1
1. This document is DS58, one of a series of the Animal Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date September, 1992. Reviewed June, 20003. Visit the EDIS Web Site at http://edis.ifas.ufl.edu. 2. Professor, Dairy Science Department, Institute of Food and Agricultural Sciences, University ...
متن کاملFixed-time artificial insemination in beef cattle
BACKGROUND The study was designed to test the effect of fixed-time artificial insemination (fixed-AI) after the slightly modified Ovsynch protocol on the pregnancy rate in beef cattle in Finnish field conditions. The modification was aimed to optimize the number of offsprings per AI dose. METHODS Ninety Charolais cows and heifers were entered into the program an average of 1.8 times. Thus, 16...
متن کاملThe Cattle Artificial Insemination Industry in Malaysia
Artifi cial insemination (AI) technology is the most effective tool for genetic improvement in cattle. The AI service began in the 1960’s and the number of annual cattle AI’s has been steadily increasing up to 1990, after which it gradually dropped for about a decade. Since 2001 however there has been a modest recovery in the number of AI cases. In 2009 AI coverage stood at 4.2%. To rapidly imp...
متن کاملSynchronization techniques to increase the utilization of artificial insemination in beef and dairy cattle
The main objective of the implementation of Artificial Insemination (AI) in cattle is to produce a sustained genetic progress in the herd. Although AI is an old reproductive biotechnology, its widespread implementation is very recent and is mainly due to the use of protocols that allows the AI without heat detection, commonly called fixed-time artificial insemination (FTAI). The development of ...
متن کاملComparison of artificial insemination and natural service cost effectiveness in dairy cattle.
Reproductive efficiency in the dairy herd is the most important factor for its economic success and a major concern for dairy farmers when using artificial insemination (AI) or natural service (NS). Our objectives were to estimate, compare and analyse the costs associated with breeding cattle by do-it-yourself (DIY) AI and NS and identify the factors that influence them, under typical dairy far...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1939
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(39)92860-2