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Animal Science Database

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Abstract

The aim of the present study was to evaluate the effects of the PGF treatment given at the onset of a synchronization of ovulation protocol using a norgestomet (NORG) ear implant on ovarian follicular dynamics (Experiment 1) and pregnancy per AI (P/AI; Experiment 2) in cyclic (CL present) Bos...

Author(s)
SáFilho, M. F.; Marques, M. O.; Gimenes, L. U.; Torres Júnior, J. R. S.; Batista, E. O. S.; Carvalho, J. P. B.; Baruselli, P. S.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2014, 144, 1/2, pp 1-5
Abstract

Our objectives were to identify stages of the oestrous cycle at which initiation of a timed artificial insemination (Ovsynch/TAI) protocol may reduce pregnancy rates and to monitor ovarian follicle dynamics and corpus luteum (CL) development after initiation of the Ovsynch/TAI protocol at different ...

Author(s)
Moreira, F.; Sota, R. L. de la; Diaz, T.; Thatcher, W. W.
Citation
Journal of Animal Science, 2000, 78, 6, pp 1568-1576
Abstract

Objectives were to determine effects of lactation and pregnancy on endometrial gene expression on d 17 of the estrous cycle and pregnancy. Heifers (n=33) were assigned randomly after parturition to lactating (L, n=17) or nonlactating (NL, n=16) groups. Cows were subjected to an ovulation...

Author(s)
Cerri, R. L. A.; Thompson, I. M.; Kim, I. H.; Ealy, A. D.; Hansen, P. J.; Staples, C. R.; Li, J. L.; Santos, J. E. P.; Thatcher, W. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 10, pp 5657-5675
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

This study was designed to evaluate the effect on fertility of 0.4 mg. per 1b. body weight per day of MAP when given under controlled conditions to 15- to 18-mth-old Holstein heifers weighing 630-825 1b. ; the animals were concurrently under trial in a nutritional experiment (2 types of hay). MAP...

Author(s)
FAHNING, M. L.; SCHULTZ, R. H.; GRAHAM, E. F.; DONKER, J. D.; MOHRENWEISER, H. W.
Citation
Journal of Reproduction and Fertility, 1966, 12, pp 569-571
Abstract

Three methods of regulating the oestrous cycle in Hereford cattle were studied in 3 separate trials. In Trial I an attempt was made to bring 27 Hereford heifers into oestrus during a target period of 3 days by altering the naturally occurring cycles, where necessary, by recycling by means of...

Author(s)
HANSEL, W.; MALVEN, P. V.; BLACK, D. L.
Citation
Journal of Animal Science, 1961, 20, pp 621-625
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
Abstract

ARNOLD, F. Utilization of proved sires and sons of proved sires: 578-579. At present only about 1 sire out of 8 is alive when proved and worthy of further use. There is little chance of increasing the use of proved sires except through their sons, or through programmes designed to prove bulls at an ...

Citation
Journal of Dairy Science, 1940, 23, pp 473-586

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