Results 171 to 180 of about 248 (214)

Preservation and artificial insemination of sexed semen in sheep

Reproduction, Fertility and Development, 2004
Sperm-sexing technology using flow cytometry is in advanced stages of development for the sperm of several species. The sorting process could compromise sperm viability and sperm require specific handling procedures both before and after sorting to maintain the integrity and function of the sorted sperm.
G, Evans, F K, Hollinshead, W M C, Maxwell   +2 more
openaire   +2 more sources

Danish A.I. field data with sexed semen

Theriogenology, 2009
The objective of this study was to compare conception rates, non-return rates and sex ratios of sexed and conventional semen from the same sires in commercial dairy herds in Denmark. The semen was produced from three bulls from each of the three major dairy breeds in Denmark: Holstein, Jersey and Danish Red Dairy Breed (nine bulls total), in order to ...
S, Borchersen, M, Peacock
openaire   +2 more sources

Applications of sexed semen in cattle production

Theriogenology, 1999
Sexed semen will contribute to increased profitability of dairy and beef cattle production in a variety of ways. It could be used to produce offspring of the desired sex from a particular mating to take advantage of differences in value of males and females for specific marketing purposes.
openaire   +2 more sources

The use of sex-sorted semen in horses

Journal of Equine Veterinary Science
The application of sex-sorted semen in horses has historically lagged the bovine industry due to differences in the reproductive physiology and grater variability in equine semen quality. Recent advancements, including SuperGen™ sorters and Ultraplus™ semen processing methods developed by STgenetics® (Navasota, Texas), have significantly improved the ...
JC Samper, JC Hernandez Aviles, LF Ramirez-Agamez, CC Love, C Gonzalez-Marin, P Fleury, P Dini, A De La Fuente, R Foss, FL Campos, PJ Ross   +10 more
openaire   +2 more sources

Applications and world-wide use of sexed semen in cattle

Animal Reproduction Science, 2022
Successful sorting of sperm based on presence of the X- or Y-chromosome was first reported in the early 1980's with the first live births reported in rabbits in 1988. Subsequent development of technological efficiencies resulted in commercialization of sex-sorted semen to cattle producers in 2003-2005.
G E, Seidel, J M, DeJarnette
openaire   +2 more sources

Semen Donation and Sex Selection

1990
In 1948, artificial insemination with donor’s semen (AID) was performed for the first time in Japan at the Keio University hospital. Then the first successful cases of four pregnancies with donor’s frozen semen were also reported by us. In Japan, since 1949, more than 7000 patients have become pregnant following AID with fresh or frozen semen, and ...
openaire   +1 more source

Indian dairy farmers' willingness to pay for sexed semen

Journal of Dairy Research, 2020
AbstractSexed semen is one of the newest reproductive technologies available for dairy farmers and can fulfil their desire to produce a high percentage of female calves. The present study was designed to define the willingness of Indian dairy farmers to pay for sexed semen.
Kumari Vijaya Sneh, Verma, Sanchita, Garai, Sanjit, Maiti, B S, Meena, Mukesh, Bhakat, K S, Kadian   +5 more
openaire   +2 more sources

Semen quality and sex hormones with reference to metal welding

Reproductive Toxicology, 1998
Welding may involve hazards to the male reproductive system, but previous studies of semen quality have produced inconsistent results. We studied the effects of welding on markers of semen quality in a Danish nationwide sample of 430 first-time pregnancy planners without earlier reproductive experience. Couples were recruited among members of the union
Hjøllund, Niels Henrik Ingvar; id_orcid 0000-0002-6697-6597, Bonde, J P, Jensen, T K, Ernst, E, Henriksen, T B; id_orcid 0000-0001-6933-8294, Kolstad, Henrik, Giwercman, A, Skakkebaek, N E, Olsen, J   +8 more
openaire   +3 more sources

Application and Commercialization of Flow Cytometrically Sex‐Sorted Semen

Reproduction in Domestic Animals, 2008
ContentsThe current technology to sort X and Y chromosome bearing sperm population requires individual identification and selection of spermatozoa in a modified high‐speed flow cytometer. For farm animal species, the technology is capable of producing sexed sperm at greater than 90% purity.
D, Rath, L A, Johnson
openaire   +2 more sources

The use of sexed semen in dairy herds

Livestock, 2019
Artificial 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.
openaire   +1 more source