Value and Use of Artificial Insemination by Beef Producers
نویسندگان
چکیده
منابع مشابه
Fixed-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...
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1Associate professor, f , Department rt t off Agricultural i lt l Economics i and Business, i , University i it off ‘ i t Guelph, Guelph,, Ontario; while the final version was being completed, t , Visiting academic, i , Z Dt:partment off Agriculture i lt and Resource Econonlics, University i it off New England. l . 2 2 Graduate t research assistant, i t t, Department rt nt off Agricultural i lt...
متن کاملExperiences in Artificial Insemination of Beef Cattle in North Queensland
Artificial insemination was used in an attempt to breed three groups of Brahman cross cows on two properties in north Queensland. On one property the attempt was abandoned due to low incidence of detected oestrus in lactating cows. On the other property calving rates following insemination were 20.8% and 16.4% over two years. Vibriosis was one cause of low fertility. Semen was collected satisfa...
متن کاملSome Problems Associated with Artificial Insemination of Beef Cattle
In October, 1964, beef cows were divided into three groups. One group was run with bulls for four months (group 1); another group was kept free of bulls and was observed daily for six weeks and cows detected in oestrus were inseminated using chilled semen (group 2); and the third group was given progestagens to synchronise ovarian cycles and the cows were inseminated after treatment and again a...
متن کاملArtificial Insemination
A GROUP of dairymen in New Jersey organized in 1938 the first cooperative in the United States for the artificial insemination of their cows. This method of serving females without natural mating has since become one of the most significant programs for livestock improvement in the history of American agriculture. A great deal of research has been done on all phases. A basic contribution was th...
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ژورنال
عنوان ژورنال: Kansas Agricultural Experiment Station Research Reports
سال: 2015
ISSN: 2378-5977
DOI: 10.4148/2378-5977.1020