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AbstractFull Text

The impact of real-time ultrasound on the study of bovine reproduction has been dramatic and further development of portable ultrasound machines has given clinicians an added tool for diagnostic reproductive management. Ultrasonography with 3.0-7.5 MHz frequency linear probes is commonly used and...

Author(s)
Suthar, V. S.; Momin, T.; Mahesh, P.; Kelawala, D. N.; Patil, D. B.
Publisher
Intas Pharmaceuticals Ltd, Ahmedabad, India
Citation
Intas Polivet, 2018, 19, 1, pp 22-28
AbstractFull Text

The objective of this study was to investigate how follicular dynamics are affected by changing the initial injection times of PGF2α and GnRH in the Cosynch protocol in Montofon cattle that have been administered presynchronization. Initially, all cattle whose corpus luteum was identified were...

Author(s)
Kaçar, C.; Kaya, D.; Yıldız, S.; Kaya, S.; Kuru, M.; Pancarcı, Ș. M.; Zonturlu, A. K.
Publisher
Kafkas Üniversitesi, Veteriner Fakültesi Dergisi, Kars, Turkey
Citation
Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 2014, 20, 6, pp 951-956
Abstract

Important developments have occurred in the last two decades, since the advent of the Ovsynch protocol, on the understanding and use of synchronisation programmes for management of reproduction in dairy herds. This better understanding of oestrus cycle control associated with suboptimal...

Author(s)
Bisinotto, R. S.; Ribeiro, E. S.; Santos, J. E. P.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2014, 8, s1, pp 151-159
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

Pregnancy per artificial insemination (P/AI) following Ovsynch is optimized when cows ovulate to the first GnRH of Ovsynch. Fertility programs are designed to presynchronize cows to d 6 or 7 of the estrous cycle to increase the chances of ovulation of a first-wave dominant follicle to the first...

Author(s)
Martins, J. P. N.; Acevedo, M. J. T.; Cunha, T. O.; Piterini, C.; Pursley, J. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 6, pp 5107-5116
Abstract

After 80 years of the commercial application of artificial insemination (AI) in the cow, the method still has numerous benefits over natural insemination including worldwide gene improvement. The efficiency of insemination depends, among many other factors, on the delivery of an appropriate number...

Author(s)
López-Gatius, F.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2012, 77, 6, pp 1029-1041
Abstract

The aim of this study was to evaluate the relationship between the ovarian follicular response at the start of the OVsynch-fixed-time artificial insemination (TAI) program and pregnancy outcome in the Mediterranean river buffalo. The study involved 116 pluriparous buffaloes at 118±65 days in milk...

Author(s)
Neglia, G.; Gasparrini, B.; Salzano, A.; Vecchio, D.; Carlo, E. de; Cimmino, R.; Balestrieri, A.; D'Occhio, M. J.; Campanile, G.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 86, 9, pp 2328-2333
Abstract

This study aimed to compare the reproductive efficiency of dairy buffaloes subjected to TAI protocols based on progesterone, estrogen, and equine chorionic gonadotrophin (P4/E2+eCG) during the fall/winter (n=168) and spring/summer (n=183). Buffaloes received an intravaginal P4 device (1.0 g) plus...

Author(s)
Monteiro, B. M.; Souza, D. C. de; Vasconcellos, G. de S. F. M. de; Carvalho, N. A. T. de; Baruselli, P. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 119, pp 275-281
Abstract

Our objectives were to evaluate ovarian dynamics and fertility comparing 2 treatments at the start of a progesterone (P4)-based fixed-time artificial insemination (FTAI) protocol and 2 treatments at the end of the protocol. Thus, 1,035 lactating Holstein cows were assigned in a random phase of the...

Author(s)
Melo, L. F.; Monteiro, P. L. J., Jr.; Surjus, R. S.; Drum, J. N.; Wiltbank, M. C.; Sartori, R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 11, pp 9227-9237
Abstract

Background: Evaluation of reproductive behavior in Creole cows is important to determine several parameters, such as fertility, that show the physiologic reproductive mechanisms under different conditions. Therefore, the sequence of events such as ovulation and the subsequent formation of a corpus...

Author(s)
Quezada-Casasola, A.; Avendaño-Reyes, L.; Macías-Cruz, U.; Ramírez-Godínez, J. A.; Rivas-Cáceres, R. R.
Publisher
Universidad de Antioquia, Medellín, Colombia
Citation
Revista Colombiana de Ciencias Pecuarias, 2015, 28, 4, pp 303-312

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