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Animal Science Database

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Abstract

The objective of this study was to investigate the potential differences among Holstein-Friesian (HF), Montbéliarde (MB), Normande (NM), Norwegian Red (NRF), Montbéliarde × Holstein-Friesian (MBX), and Normande × Holstein-Friesian (NMX) across 2 seasonal grass-based systems of milk production. The...

Author(s)
Walsh, S.; Buckley, F.; Pierce, K.; Byrne, N.; Patton, J.; Dillon, P.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2008, 91, 11, pp 4401-4413
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 the study was to determine the efficiency of ovsynch (OV) versus presynch-ovsynch (P-OV) protocol for synchronization of ovulation and timed artificial insemination (TAI) in female buffaloes. The OV group (n=40) received gonadotrophin-releasing hormone (GnRH) on day 0 (random day...

Author(s)
Oropeza, A. J.; Rojas, Á. F.; Velazquez, M. A.; Muro, J. D.; Márquez, Y. C.; Vilanova, L. T.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 6, pp 1149-1154
Abstract

Pregnancy per insemination is a major determinant of reproductive efficiency in cattle and is affected by concentrations of progesterone (P4) during early pregnancy. The relationship between pregnancy per artificial insemination (P/AI) and early luteal concentrations of P4, and repeatability of...

Author(s)
Parr, M. H.; Mullen, M. P.; Crowe, M. A.; Roche, J. F.; Lonergan, P.; Evans, A. C. O.; Diskin, M. G.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 5, pp 2390-2396
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

The present study was conducted on lactating Murrah buffalo to assess the effect of crushed flaxseed (a source of omega-3 fatty acids) supplementation (300 g/100 kg bwt/day for 60 days), over and above the routine feed, on luteolytic signal (PGF), luteal function (progesterone) and conception...

Author(s)
Nazir, G.; Ghuman, S. P. S.; Singh, J.; Honparkhe, M.; Ahuja, C. S.; Dhaliwal, G. S.; Sangha, M. K.; Saijpaul, S.; Agarwal, S. K.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2013, 137, 1/2, pp 15-22
Abstract

The somatotropic axis is a key metabolic pathway during transition from late pregnancy to early lactation in dairy cows. The first objective of this study was to determine the feasibility of selecting cows with persistent differences in total insulin-like growth factor 1 (IGF-1) concentration by...

Author(s)
Piechotta, M.; Kedves, K.; Araujo, M. G.; Hoeflich, A.; Metzger, F.; Heppelmann, M.; Muscher-Banse, A.; Wrenzycki, C.; Pfarrer, C.; Schuberth, H. J.; Hoedemaker, M.; Bollwein, H.; Kaske, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2013, 96, 6, pp 3737-3749
Abstract

The hypotheses of this study were (1) that the administration of 400 IU eCG in a TAI protocol would increase ovarian follicular growth and diameter of the largest follicle (LF), volume of the CL, and produce an earlier rise on serum concentration of progesterone (P4) to ultimately improve P/AI...

Author(s)
Ferreira, R. M.; Ayres, H.; Sales, J. N. S.; Souza, A. H.; Rodrigues, C. A.; Baruselli, P. S.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2013, 140, 1/2, pp 26-33
Abstract

The aim of this study was to compare four methods of estrus resynchronization performed 23 days after timed artificial insemination (TAI) plus estrus observation in Bos indicus cows. Eight hundred fourteen lactating Nelore cows were submitted to TAI and then randomly assigned to one of the five...

Author(s)
Campos, J. T.; Marinho, L. S. R.; Lunardelli, P. A.; Morotti, F.; Seneda, M. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2013, 80, 6, pp 619-623
Abstract

The objective of this study was to examine the effects of increasing circulating progesterone in multiparous Holstein cows, using an intravaginal progesterone implant between days 3 and 7 following fixed-time artificial insemination (FTAI). The animals were randomly assigned into two groups: (1)...

Author(s)
Marques, T. C.; Leão, K. M.; Viu, M. A. de O.; Sartori, R.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2014, 46, 2, pp 405-410

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