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Abstract

Considering that there is limited information about the preovulatory LH surge in Zebu cattle (Bos indicus), the purpose of the present work was to assess the LH surge in Nelore cows during the estrous cycle and after ovarian superestimulation of ovarian follicular development with FSH. This...

Author(s)
Monteiro, F. M.; Melo, D. S.; Ferreira, M. M. G.; Carvalho, L. M.; Sartoreli e Sartoreli, E.; Ederhardt, B. G.; Nogueira, G. de P.; Barros, C. M.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 110, 1/2, pp 128-138
Abstract

The objective of this study was to clarify the effects of a second protocol of ovulation synchronisation starting on day 26 after timed artificial insemination on ovarian profile and days open in dairy cows diagnosed as nonpregnant. Ninety-four Holstein-Friesian cows received intramuscular...

Author(s)
Osawa, T.; Honjou, S.; Nitta, H.; Uchiza, M.; Tameoka, N.; Moro, Y.; Izaike, Y.
Publisher
Society for Reproduction and Development (, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2009, 55, 2, pp 163-169
Abstract

The study was aimed at induction/synchronization of estrus in postpartum anestrous Kankrej cows of zebu cattle maintained at an organized farm. The study included use of different hormone protocols, viz., Ovsynch, CIDR (controlled internal drug release), Ovsynch plus CIDR, and Heatsynch with...

Author(s)
Bhoraniya, H. L.; Dhami, A. J.; Mehrajuddin Naikoo; Parmar, B. C.; Sarvaiya, N. P.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2012, 44, 6, pp 1191-1197
Abstract

Poor estrus expression and the difficulty encountered in predicting the time of ovulation compromise the reproductive efficiency of Murrah buffalo cows. Synchronization of ovulation and timed artificial insemination are able to precisely control the time of ovulation and thus avoid the need for...

Author(s)
Mirmahmoudi, R.; Souri, M.; Prakash, B. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2014, 82, 7, pp 1012-1020
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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