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Abstract

Seasonal variation in artificial insemination (AI) and pregnancy rate in buffalo of small farmers was recorded following analysis of AI carried out in 1087 buffalo in a calendar year. On an average, 90.6±11.1 inseminations were carried out per month and the average pregnancy rate in a calendar year ...

Author(s)
Ghuman, S. P. S.; Dhami, D. S.
Publisher
Indian Society for Study of Animal Reproduction (ISSAR), Chennai, India
Citation
Indian Journal of Animal Reproduction, 2017, 38, 1, pp 4-8
Abstract

Two experiments were conducted to assess a hormonal strategy developed to reduce animal handling for timed artificial insemination (TAI) with sex-sorted semen. Four-hundred ninety-one (491) suckled beef cows received a progesterone (P4) intravaginal device and 2 mg intramuscular (im) injection of...

Author(s)
Silva, M. A. V.; Santos, C. S.; França, I. G.; Pereira, H. G.; SáFilho, M. F.; Freitas, B. G.; Guerreiro, B. M.; Faquim, A.; Baruselli, P. S.; Torres-Júnior, J. R. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 114, pp 159-164
AbstractFull Text

The estrous cycle or interovulatory interval in the mare allows monitoring and selection of the most appropriate time for copulation or artificial insemination (AI). Estrous cycle is an interaction of hormones of the pineal gland, hypothalamus, pituitary, gonad and endometrium lasting 21 days. The...

Author(s)
Cortés-Vidauri, Z.; Aréchiga-Flores, C.; Rincón-Delgado, M.; Rochín-Berumen, F.; Carlos, M. L.; Flores-Flores, G.
Publisher
Sergio Martínez González, Tepic, Mexico
Citation
Abanico Veterinario, 2018, 8, 3, pp 14-41
Abstract

The aim of this study was to compare estradiol benzoate (EB) and GnRH for the induction of ovulation in a TAI protocol in buffalo during the nonbreeding season. In experiment 1, 141 buffaloes (56 cows and 85 heifers) received an intravaginal P4 device (1.0 g) plus EB (2.0-mg, intramuscular [im]) at ...

Author(s)
Carvalho, N. A. T.; Soares, J. G.; Souza, D. C.; Maio, J. R. G.; Sales, J. N. S.; Martins Júnior, B.; Macari, R. C.; D'Occhio, M. J.; Baruselli, P. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 87, pp 333-338
Abstract

The aim of this study was to determine the relationship between the intensity of estrus expression on the ovulatory follicle diameter (OFD) and its effect on the conception rate in zebu females managed under a FTAI program. On a random day of the estrous cycle, day 0, 308 Nellore females received...

Author(s)
Ferraz, P. A.; Loiola, M. V. G.; Rodrigues, A. S.; Lima, M. C. C.; Bittencourt, T. C. B. dos S. C. de; Ribeiro Filho, A. de L.
Publisher
Universidade Federal de Goiás, Escola de Veterinária, Goiânia, Brazil
Citation
Ciência Animal Brasileira, 2017, 18, pp e-37643
Abstract

Numerous treatments and protocols have been used to control the reproductive cycle in cattle, with varying effectiveness and many involving the administration of steroid hormones. Steroid hormones, such as estradiol, are perceived as having a negative impact on consumer health. This internationally ...

Author(s)
Yapura, M. J.; Zwiefelhofer, E. M.; Pierson, R. A.; Adams, G. P.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 112, pp 18-25
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

This study evaluated effects of equine chorionic gonadotropin (eCG) on fertility of 679 crossbred (Bos taurus × Bos indicus) lactating grazing cows synchronized for fixed-time AI (FTAI). At a random day of the estrous cycle cows received an intravaginal progesterone (P4) implant, 2 mg estradiol...

Author(s)
Prata, A. B.; Pontes, G. C. S.; Monteiro Júnior, P. L. J.; Drum, J. N.; Wiltbank, M. C.; Sartori, R.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 98, pp 36-40
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

The forest musk deer (FMD, Moschus berezovskii) is a threatened species in China. Although crucial for its artificial breeding management and thus protection, to date, gonadal steroidogenic activity data are unavailable in this species. Thus, the objectives of the present study were to characterize ...

Author(s)
Wang YiHua; Liu ShuQiang; Yang Shuang; Zhang TianXiang; Wei YuTing; Zhou JunTong; Hu DeFu; Li LinHai
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2016, 170, pp 1-9

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