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Abstract

Author(s)
Lima, F. L.; Vieira Neto, A.; Martinez, N. M.; Risco, C. A.; Galvão, K. N.; Santos, J. E. P.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Proceedings of the 46th Annual Conference of the American Association of Bovine Practitioners, Milwaukee, Wisconsin, USA, 19-21 September 2013, 2014, pp 136
Abstract

The objectives of this experiment were to determine the effects of oral Ca supplementation on milk yield, body condition, pregnancy per artificial insemination (P/AI), and days to pregnancy in Holstein cows considered to be of low (LRM; no calving assistance, live singleton without retained...

Author(s)
Martinez, N.; Sinedino, L. D. P.; Bisinotto, R. S.; Daetz, R.; Risco, C. A.; Galvão, K. N.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 10, pp 8417-8430
Abstract

Holstein cows received, subcutaneously 1 (1DESL, n=15) or 2 (2DESL, n=12) degradable implant containing 2.1 mg of the GnRH agonist Deslorelin or no implant (CON, n=18) within 1.5 days postpartum (dpp). Previous pregnant (PPH) and non-pregnant (PNPH) uterine horns were determined by palpation per...

Author(s)
Silvestre, F. T.; Risco, C. A.; Lopez, M.; Sá, M. J. S. de; Bilby, T. R.; Thatcher, W. W.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 116, 3/4, pp 196-212
Abstract

Objectives were to investigate 2 intervals from induction of ovulation to artificial insemination (AI) and the effect of supplemental progesterone for resynchronization on fertility of lactating dairy cows subjected to a 5-d timed AI program. In experiment 1, 1,227 Holstein cows had their estrous...

Author(s)
Bisinotto, R. S.; Ribeiro, E. S.; Martins, L. T.; Marsola, R. S.; Greco, L. F.; Favoreto, M. G.; Risco, C. A.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2010, 93, 12, pp 5798-5808
Abstract

This paper reviews the use of GnRH, PGF and their analogues for oestrus synchronization in dairy cows and heifers. Details are given on particular treatment programmes used in the USA.

Author(s)
Thatcher, W. W.; Risco, C. A.; Moreira, F.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Proceedings of the Thirty-First Annual Conference American Association of Bovine Practitioners, Spokane, Washington, USA, 24-26 September, 1998., 1998, pp 34-50
Abstract

This study compared the pregnancy rate in cows inseminated after two different pre-synchronization protocols based on clinical features of the genital tract and treatment with either PGF or GnRH. A total of 340 reproductively normal lactating dairy cows was divided into two groups. Cows in Group...

Author(s)
Bartolome, J. A.; Sheerin, P.; Luznar, S.; Melendez, P.; Kelbert, D.; Risco, C. A.; Thatcher, W. W.; Archbald, L. F.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Bovine Practitioner, 2002, 36, 1, pp 35-39

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