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The use of sexed semen in dairy herds
Livestock, 2019Artificial insemination of cattle became a commercial reality in 1936, and in 1952 the first calves were born as a result of freeze-thawed semen insemination. The long-held aspiration for pre determination of sex became a reality with the development of sperm sorting technology with the first female calves being born in the UK in 1999.
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APPLICATION OF SEXED SEMEN IN DAIRY CATTLE
Bulletin of KSAUThe state and level of reproduction, including cattle, in modern changing conditions indicates the need to revise the main directions in the work on artificial insemination. The problems that have arisen due to the reduced integration of foreign technologies into our livestock farming and the artificial restriction of access to innovative technologies ...
Boris Gavrilov +3 more
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Semen sexing techniques and their applicability to cuniculture
2016Pòster
Codinach Palou, Jordi +1 more
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Beef on dairy and sexed semen strategies
American Association of Bovine Practitioners Conference ProceedingsThe use of sexed dairy semen and beef semen on dairies as tools to generate genetic progress and expand revenue has evolved tremendously over the past decade to the point these tools have become integrated as part of a finely managed process often referred to as the “sexed and beef” model.
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Sexing semen in the dog: preliminary study
2011Introduction and aim. It is now possible to predetermine the sex of offspring from a number of species before fertilization with an accuracy of 85-95%. The current technology is based on the well-known difference in X- and Y- sperm in the amount of DNA present, and incorporates modified flow cytometric sorting instrumentation to sort X- and Y-bearing ...
MERLO, BARBARA +6 more
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Developing Sex: From Recremental Semen to Developmental Endocrinology
Journal of the History of BiologyDuring the 1890s, animal development became associated with glandular activity, with profound implications for pediatric nosology and treatment. The significance of this endocrinological turn of developmental physiology and pathophysiology in part hinges on an often-overlooked continuity with ubiquitous early modern medical thought concerning semen as ...
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Insemination of heifers with sexed frozen or sexed liquid semen
Theriogenology, 1999G.E Seidel +5 more
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Semen quality and the secondary sex ratio
Fertility and Sterility, 2014J. Bae +4 more
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