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Animal Science Database

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Abstract

The objective of this study was to determine if there are differences in luteal size (LS), progesterone (P4), and luteal blood flow (LBF) between pregnant and non-pregnant Bos indicus dairy cows during the first three weeks after insemination, and whether these parameters are related to each other. ...

Author(s)
Hassan, M.; Arshad, U.; Bilal, M.; Sattar, A.; Avais, M.; Bollwein, H.; Ahmad, N.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2019, 65, 1, pp 29-36
Abstract

The study aimed to evaluate pregnancy per artificial insemination (P/AI) of cows subjected to synchronization and resynchronization in ovulation protocols using intravaginal progesterone-releasing insert (P4) before pregnancy diagnosis (PD) and the relationship of PR with the diameter of...

Author(s)
Oliveira, D. A. M. de; Kozicki, L. E.; Gaievski, F. R.; Pedrosa, V. B.; Weiss, R. R.; Segui, M. S.; Bergstein-Galan, T. G.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2019, 54, 5, pp 779-785
Abstract

Objective: To investigate the effect of concentration of progesterone (P4) before artificial insemination (AI) on fertility in ovulatory or anovulatory Bos indicus cattle. Design: Randomised control study. Methods: The study included 162 heifers and 96 lactating cows. On days -10 to -12, animals...

Author(s)
Cavalieri, J.; Gaina, C.; Hepworth, G.
Publisher
Wiley, Melbourne, Australia
Citation
Australian Veterinary Journal, 2018, 96, 9, pp 346-355
Abstract

Paraoxonase-1 (PON1) activity has been associated with improvement in ovarian function in early postpartum dairy cows and improved in vitro embryo development. The aim of the current study was to evaluate the potential association among PON1 activity and follicular growth, diameter of the...

Author(s)
Castro, N. A.; Pfeifer, L. F. M.; Andrade, J. S.; Rincón, J. A. A.; Pegoraro, L. M. C.; Schneider, A.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 188, pp 130-136
Abstract

The effects of eCG on follicular growth, ovulation, and pregnancy per artificial insemination (P/AI) in multiparous and primiparous Bos indicus beef cows submitted to timed artificial insemination (TAI) were evaluated in three experiments. In experiments 1 (follicular responses; n=64), 2...

Author(s)
Sales, J. N. S.; Bottino, M. P.; Silva, L. A. C. L.; Girotto, R. W.; Massoneto, J. P. M.; Souza, J. C.; Baruselli, P. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 86, 9, pp 2290-2295
Abstract

This study evaluated the effect of different doses of eCG (control, 300 or 400 IU) administered at progesterone (P4) device removal in suckled Bos taurus beef cows undergoing a timed artificial insemination (TAI) protocol. A total of 966 cows received a P4 insert and 2.0 mg intramuscular estradiol...

Author(s)
Pessoa, G. A.; Martini, A. P.; Carloto, G. W.; Rodrigues, M. C. C.; Claro Júnior, I.; Baruselli, P. S.; Brauner, C. C.; Rubin, M. I. B.; Corrêa, M. N.; Leivas, F. G.; SáFilho, M. F.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 5, pp 792-799
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

The objectives of this study were to (1) evaluate factors associated with variation in circulating anti-Müllerian hormone (AMH) concentrations, (2) establish an optimum AMH threshold predictive of pregnancy to first artificial insemination (P/AI), (3) examine the relationship between AMH and...

Author(s)
Gobikrushanth, M.; Purfield, D. C.; Colazo, M. G.; Butler, S. T.; Wang, Z.; Ambrose, D. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 8, pp 7563-7574
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
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

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