Hereford cows were mated to semen (total 2438 doses) from seven sire breeds (Angus, Belgian Blue, Hereford, Jersey, Limousin, South Devon and Wagyu). A total of 97 sires were represented over four matings from 1993-1996 with an overall calving rate of 62%. Only 19% received a repeat dose of semen. Year of mating and cow age significantly affected calving rates and gestation lengths. Sire breed differences were not significant. However, a wide range of success rates were noted for individual sires.M.P.B. Deland, R.A. Ross, E.A. Abraham and W.S. Pitchfor
Although artificial insemination (AI) is widely used in dairy cattle, AI has found only limited appl...
were bred by artificial insemination under extensive grazing conditions in north Queensland. First s...
Reproductive data were collected on 4,595 cow exposures and subsequent calvings over four generation...
Hereford cows were mated to semen (total 2438 doses) from seven sire breeds (Angus, Belgian Blue
Differences in conception rate to first service between artificial inseminations (AI) carried out by...
Fourteen registered Hereford cows in the Kansas State University purebred teaching herd were mated ...
Our objective in this study was to evaluate the reproductive performance of dairy heifers and cows i...
Using sexed semen to produce purebred replacement heifers makes it possible to mate a large proporti...
Artificial insemination and crossbreeding are two methods of cattle breeding in an attempt to increa...
Abstract — Differences in conception rate to first service between artificial inseminations (AI) car...
Genetic make-up of a cow herd is comprised by 50% of the bull’s genetic material, so genetic progres...
Straightbred Hereford, Angus-Hereford and Simmental-Hereford are popular cow breeds in South Dakota....
Genetic and environmental variability in gestation length, calving date and probability of conceptio...
The objective was to evaluate the reproductive performance of frozen sex-sorted sperm at 4 × 106 spe...
The duration of frozen semen storage had no effect on pregnancy rates (60%, 61% and 61%, respectivel...
Although artificial insemination (AI) is widely used in dairy cattle, AI has found only limited appl...
were bred by artificial insemination under extensive grazing conditions in north Queensland. First s...
Reproductive data were collected on 4,595 cow exposures and subsequent calvings over four generation...
Hereford cows were mated to semen (total 2438 doses) from seven sire breeds (Angus, Belgian Blue
Differences in conception rate to first service between artificial inseminations (AI) carried out by...
Fourteen registered Hereford cows in the Kansas State University purebred teaching herd were mated ...
Our objective in this study was to evaluate the reproductive performance of dairy heifers and cows i...
Using sexed semen to produce purebred replacement heifers makes it possible to mate a large proporti...
Artificial insemination and crossbreeding are two methods of cattle breeding in an attempt to increa...
Abstract — Differences in conception rate to first service between artificial inseminations (AI) car...
Genetic make-up of a cow herd is comprised by 50% of the bull’s genetic material, so genetic progres...
Straightbred Hereford, Angus-Hereford and Simmental-Hereford are popular cow breeds in South Dakota....
Genetic and environmental variability in gestation length, calving date and probability of conceptio...
The objective was to evaluate the reproductive performance of frozen sex-sorted sperm at 4 × 106 spe...
The duration of frozen semen storage had no effect on pregnancy rates (60%, 61% and 61%, respectivel...
Although artificial insemination (AI) is widely used in dairy cattle, AI has found only limited appl...
were bred by artificial insemination under extensive grazing conditions in north Queensland. First s...
Reproductive data were collected on 4,595 cow exposures and subsequent calvings over four generation...
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