Evaluating Programmed Artificial Insemination for Cattle Production
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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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 of Bos Indicus-influenced Cattle for Timed Artificial Insemination
Developing successful methods for synchronizing estrus and ovulation in cattle has been a major research interest for at least the last 35 yr. Early objectives focused on the control of the corpus luteum (CL) and artificial insemination (AI) relative to estrus. Ultimately, the goal has been to achieve precise synchronization of ovulation so that cattle can be inseminated without regard to estru...
متن کاملTiming of artificial insemination and embryo production in superovulated Holstein cattle
The objective was to evaluate the effect of the first artificial insemination (AI) on the number of viable and degenerated embryos, total embryos and unfertilized oocytes, and fertilization rate in Holstein donor cows. Cows (n=22) and heifers (n=50) were synchronized by the Crestar (Intervet International B.V., Boxmeer, Holland) protocol where 3 mg of norgestomet are implanted subcutaneously in...
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...
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ژورنال
عنوان ژورنال: International Journal of Advanced Computer Science and Applications
سال: 2019
ISSN: 2156-5570,2158-107X
DOI: 10.14569/ijacsa.2019.0101282