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Animal Science Database

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Abstract

Two experiments in Nelore cows subjected to timed artificial insemination (TAI) were designed to compare the influence of the antral follicle count (AFC/AFCs) on (1) ovarian follicular dynamics and (2) conception rates. First, multiparous cows with high (≥45 follicles; n=43) or low (≤15 follicles; ...

Author(s)
Morotti, F.; Moretti, R.; Santos, G. M. G. dos; Silva-Santos, K. C.; Cerqueira, P. H. R.; Seneda, M. M.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 188, pp 170-177
Abstract

Sahiwal cow is Bos indicus which is an important dairy breed of tropical and sub-tropical region. Research on reproduction is rare in this breed. The objectives of the present study were to determine the effect of Ovsynch (OVS) versus prostaglandin F (PG) protocol on estrus response and its...

Author(s)
Mubbashar Hassan; Ali Husnain; Naveed, M. I.; Umair Riaz; Nasim Ahmad
Publisher
Wiley, Tokyo, Japan
Citation
Animal Science Journal, 2017, 88, 3, pp 445-450
Abstract

Increasing use of fixed-time artificial insemination (FTAI) in beef cattle production has presented an opportunity for the use of fresh or chilled semen as an alternative to standard cryopreserved semen. The objective of this study was to examine in vitro sperm function and pregnancy rate of...

Author(s)
Satake, N.; Edwards, S. A. A.; Tutt, D.; McGowan, M. R.; Boe-Hansen, G. B.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2018, 53, 2, pp 414-422
Abstract

Two experiments were performed to evaluate the reproductive performance of zebu beef cows treated with different doses of eCG at the end of a progesterone (P4)/estrogen based protocol for timed artificial insemination (TAI). In Experiment 1, suckling Bos indicus Nelore cows (n=261) received, on day ...

Author(s)
Alvarez, R. H.; Pugliesi, G.; Natal, F. L. N.; Rocha, C. C.; Ataide Júnior, G. A.; Melo, A. J. F.; Otzuk, I. P.; Oliveira, C. A. de; Humblot, P.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 118, pp 150-156
Abstract

Two experiments were conducted to evaluate breed [Angus (AN), Brahman (BR), and varying percentages of BR × AN breeding] and prostaglandin F (PGF) type [dinoprost tromethamine (dinoprost) vs. cloprostenol sodium (cloprostenol)] in suckled cows (Exp. 1; n=504) and 2-yr-old virgin heifers (Exp. 2;...

Author(s)
Esterman, R. D.; Alava, E. N.; Austin, B. R.; Hersom, M. J.; Rae, D. O.; Elzo, M.; Yelich, J. V.
Publisher
American Registry of Professional Animal Scientists (ARPAS), Champaign, USA
Citation
Professional Animal Scientist, 2016, 32, 5, pp 636-646
Abstract

The aim of this study was to evaluate the reproductive performance of 411 Nellore cows (198 nulliparous, 80 primiparous, and 133 multiparous) submitted to the 5dCO-Synch+P4 or 7dEB+P4 systems. The 5dCO-Synch+P4 system consisted of insertion of an intravaginal progesterone (P4) insert and 100 µg of...

Author(s)
Ferraz Junior, M. V. C.; Pires, A. V.; Biehl, M. V.; Santos, M. H.; Barroso, J. P. R.; Gonçalves, J. R. S.; Sartori, R.; Day, M. L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 86, 8, pp 1939-1943
Abstract

For this study, we used the results of sire fertility (SF) measured on a monthly basis by the ratio between the number of pregnant cows and the number of inseminations, from a total of 905 140 inseminations carried out in Cuba between 1994 and 2003. These artificial inseminations were made using...

Author(s)
Menéndez Buxadera, A.; Ayrado, Y.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2013, 7, 5, pp 721-728
Abstract

This experiment compared pregnancy rates in Bos indicus cows assigned to temporary calf weaning (TCW) or eCG administration during estrus synchronization, with or without melengestrol acetate (MGA) supplementation after artificial insemination (AI). A total of 3042 lactating, multiparous,...

Author(s)
Costa Junior, W. M.; Cooke, R. F.; Pereira, M. H. C.; Vasconcelos, J. L. M.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2017, 206, pp 71-75
Abstract

This study was carried out from October 2007 to March 2009 on 237 Gobra zebus after an insemination campaign in the area of Thies (Senegal) where it aimed at evaluating the performance of Gobra females and their products after artificial insemination. The rate of gestation was 44.3% (n=105) with an ...

Author(s)
Kouamo, J.; Alloya, S.; Habumuremyi, S.; Ouedraogo, G. A.; Sawadogo, G. J.
Publisher
AGRI-Overseas, Brussels, Belgium
Citation
Tropicultura, 2014, 32, 2, pp 80-89
Abstract

The study aimed to determine the effect of assisted reproductive technologies on cow productivity. The study was conducted with organized cattle farmers under communal and emerging farming systems from three provinces, namely; Limpopo, Mpumalanga and KwaZulu-Natal. Cow parameters evaluated were...

Author(s)
Mugwabana, T. J.; Nephawe, K. A.; Muchenje, V.; Nedambale, T. L.; Nengovhela, N. B.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2018, 46, 1, pp 1090-1096

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