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Abstract

The insemination with sorted sperm by flow-cytometry technique has been used successfully to produce male or female calves, according to the choice of the producer. The aim of this experiment was to evaluate the rate of birth of a commercial sorted sperm and compare its efficiency with non sexed...

Author(s)
Meirelles, C.; Faria, V. R.; Souza, A. B.; Weiss, R. R.; Segui, M. S.; Kozicki, L. E.
Publisher
Universidade Federal do Paraná, CEPPA, Curitiba, Brazil
Citation
Archives of Veterinary Science, 2008, 13, 2, pp 98-103
Abstract

Pregnancy rates of Nelore females inseminated with male-sexed semen and conventional semen from the same bulls were evaluated. The females included 433 heifers (2 years old) and 230 non-suckling cows, totaling 663 animals. Average body condition score was 3.5 (1-5 scale). Estrus was induced with...

Author(s)
Dominguez, J. H. E.; Costa, D. S.; Centurion, V. J.; Faria, F. J. C.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2011, 129, 3/4, pp 127-131
Abstract

The aim of this study was to test the effect of expression of estrus at artificial insemination (AI) on endometrium, conceptus, and CL gene expression of beef cows. Thirty-six multiparous nonlactating Nelore cows were enrolled on an estradiol- and progesterone (P4)-based timed AI protocol (AI=Day...

Author(s)
Davoodi, S.; Cooke, R. F.; Fernandes, A. C. C.; Cappellozza, B. I.; Vasconcelos, J. L. M.; Cerri, R. L. A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 4, pp 645-655
Abstract

Data from 96 Holstein Friesian cows on a commercial dairy farm were used to investigate whether body condition and serum levels of nonesterified fatty acids (NEFAs) postpartum (pp) affect progesterone (P4) levels, estrous activity, and fertility in dairy cows. The examination period started 14 days ...

Author(s)
Lüttgenau, J.; Purschke, S.; Tsousis, G.; Bruckmaier, R. M.; Bollwein, H.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 4, pp 656-663

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