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Animal Science Database

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Abstract

This is a review of the physiology and endocrinology of the estrous cycle and how ovarian physiology can be manipulated and controlled for timed artificial insemination (TAI) in beef and dairy cattle. Estrus detection is required for artificial insemination (AI), but it is done poorly in dairy...

Author(s)
Colazo, M. G.; Mapletoft, R. J.
Publisher
Canadian Veterinary Medical Association, Ottawa, Canada
Citation
Canadian Veterinary Journal, 2014, 55, 8, pp 772-780
Abstract

The effects of extended progestin exposure, gonadotropin-releasing hormone (GnRH) versus prostaglandin (PG) F at controlled internal drug-release (CIDR) insertion, and GnRH on d 7 versus 9 of a 14-d CIDR on ovarian response and timed AI (TAI) pregnancy rate were evaluated. In Exp. 1 beef heifers...

Author(s)
French, J. T.; Ahola, J. K.; Whittier, J. C.; Giles, R. L.; Repenning, P. E.; Seidel, G. E., Jr.; Peel, R. K.
Publisher
American Registry of Professional Animal Scientists (ARPAS), Champaign, USA
Citation
Professional Animal Scientist, 2013, 29, 1, pp 64-74
Abstract

Postpartum anoestrus Sahiwal cows (n=10), which had not shown any signs of oestrus even after four months of calving, pubertal anoestrus Sahiwal heifers (n=10) at the age of >3 years (3-3.5 years) and weighing 250-350 kg, and anoestrus Sahiwal cattle (n=10, as control). Ov-synch protocol...

Author(s)
Krishna Mohan; Mishra, U. K.; Mishra, O. P.; Khan, J. R.; Prakash, B. S.
Publisher
Indian Veterinary Association, Chennai, India
Citation
Indian Veterinary Journal, 2010, 87, 3, pp 297-298
Abstract

The aim of using Ovsynch protocol in true anestrus buffalo heifers (n=11) was to induce synchronized ovulatory estrus and thereafter, to assess the first service conception rate. 'Ovsynch' involved administration of a GnRH-analogue at days 0 and 9, and a PGF analogue on day 7. Transrectal ovarian ...

Author(s)
Ghuman, S. P. S.; Jagir Singh; Honparkhe, M.; Dadarwal, D.
Publisher
Indian Society for Study of Animal Reproduction (ISSAR), Chennai, India
Citation
Indian Journal of Animal Reproduction, 2009, 30, 2, pp 1-5
Abstract

293 Anatolian cows housed in small barns were examined for infertility problems. The total incidence of reproductive problems in small barns was 44.70%. The conception rates were 68.5 and 51.2% for cows and heifers at first service, respectively. The incidence of delayed ovulation, cystic ovarian...

Author(s)
Kaya, M.; Gulyuz, F.; Tasal, I.; Uslu, B. A.
Publisher
Indian Veterinary Association, Chennai, India
Citation
Indian Veterinary Journal, 2005, 82, 9, pp 957-958
Abstract

Pregnancy in cattle relates to the fertilizing capacity of the spermatozoa inseminated and it is dependent on a series of physiological events and interactions occurring in the female. Among these are the manifestation of normal oestrus, sperm transport and the establishment of a sperm reservoir in ...

Author(s)
Rodriguez-Martinez, H.; Bǻge, R.; Gustafsson, H.; Larsson, B.
Publisher
University of Bologna, Reggio Emilia, Italy
Citation
Proceedings of the International Symposium, Reggio Emilia, Italy, 8-9 October, 1999. From the first artificial insemination to the modern reproduction biotechnologies: traditional ways and new frontiers of animal production. , 1999, pp 119-137
Abstract

AKINS, E. L., LTJDWICK, T. M., RICKARD, H. E., RADER, E. R., and ETGEN, W. M. Association of certain type evaluations and type scores of first-lactation Holstein females: 748. ALMQTJIST, J. O., AMANN, R. P., and O'DELL, W. T. Sperm reserves of dairy bulls as determined by depletion trials and...

Citation
Journal of Dairy Science, 1958, 41, pp 701-751
Abstract

ALEXANDER, M. H. A study of the inheritance of persistency in milk production: 375.ALEXANDER, M. H. Length of gestation in the five major breeds of dairy cattle: 377-378.ALMQUIST, J. O., and PRINCE, P. W. The effect of a combination of penicillin, streptomycin and sulfanilamide upon the fertility...

Citation
Journal of Dairy Science, 1950, 33, pp 375-412
Abstract

Adams, C. R., Becker, D. E., Terrill, S. W., Norton, H. W., and Jensen, A. H. Rate of ovulation and implantation in swine as affected by dietary protein: 1245. Alliston, C. W., and Ulberg, L. C. Early pregnancy loss in sheep at ambient temperatures of 70° and 90° F. : 1316. Anderson, D. E., and...

Citation
Journal of Animal Science, 1960, 19, pp 1216-1339

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