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Animal Science Database

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Abstract

Prostaglandin F (PGF) is commonly injected intramuscularly (IM) in female cattle in synchronization protocols. A novel site for administration of PGF that improves beef quality assurance is the ischiorectal fossa (IRF). The objective of this study was to determine whether administration of...

Author(s)
Holland, S. C.; Whittier, W. D.; Clark, S. G.; Hafez, S. A.; Swecker, W. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 198, pp 11-19
Abstract

Our objectives were to determine the effects of the administration of recombinant bovine somatotropin (bST) at the initiation of a fixed-time AI (TAI) protocol on concentrations of plasma IGF-1, follicle diameter, embryo/fetal size, and pregnancy rates in replacement beef heifers. Four hundred and...

Author(s)
Oosthuizen, N.; Fontes, P. L. P.; Henry, D. D.; Ciriaco, F. M.; Sanford, C. D.; Canal, L. B.; Moraes, G. V. de; DiLorenzo, N.; Currin, J. F.; Clark, S.; Whittier, W. D.; Mercadante, V. R. G.; Lamb, G. C.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 5, pp 1894-1902
Abstract

To determine the effects of repeated trace mineral injections on heifer development and reproductive performance, commercial Angus heifers (n=290; 199±34.3 kg; 221±22 d of age) were utilized in a completely randomized design. Heifers were stratified by body weight (BW) and were administered an...

Author(s)
Stokes, R. S.; Volk, M. J.; Ireland, F. A.; Gunn, P. J.; Shike, D. W.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 9, pp 3943-3954
Abstract

To determine the effects of estrus synchronization (ES) and fixed-time artificial insemination (TAI) on calving distribution in Bos indicus influenced heifers, 751 Bos taurus × Bos indicus beef heifers were enrolled in a completely randomized design at 2 locations from January to May of 2016....

Author(s)
Oosthuizen, N.; Fontes, P. L. P.; Sanford, C. D.; Ciriaco, F. M.; Henry, D. D.; Canal, L. B.; DiLorenzo, N.; Lamb, G. C.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 106, pp 210-213
Abstract

This study was conducted to test the efficacy of gonadotropic hormone (GnRH)-based synchronization protocols (Ovsynch, Heatsynch, and Ovsynch Plus) in buffaloes under field condition. Based on anamnesis and transrectal palpation twice at 10-day interval and serum progesterone (P4) concentration,...

Author(s)
Rathore, R.; Sharma, R. K.; Phulia, S. K.; Mudgal, V.; Jerome, A.; Ghuman, S. P. S.; Singh, I.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 7, pp 1377-1382
Abstract

In an effort to better understand the consequences of early weaning (EW) for replacement beef heifers, a two-phase experiment was conducted investigating the impact on metabolic function and documenting reproductive characteristics. In phase 1, Angus × Simmental heifers (n=35) were stratified by BW ...

Author(s)
Zezeski, A. L.; McCracken, V. L.; Poole, R. K.; Al-Naib, A.; Smith, J. K.; McCann, M. A.; Rhoads, M. L.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2017, 11, 5, pp 820-825
Abstract

Interferon-tau (IFNτ) is the conceptus derived specific early pregnancy signal in bovidae. Locally, IFNτ induces an IFNτ specific gene expression (ISG) in endometrial cells and by this it averts luteolysis of the corpus luteum (CL) by suppressing prostaglandin production. Moreover, it was shown...

Author(s)
Ruhmann, B.; Giller, K.; Hankele, A. K.; Ulbrich, S. E.; Schmicke, M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 104, pp 198-204
Abstract

The present investigation studied the effect of short-term cooling around the time of artificial insemination (AI) on body temperature, plasma cortisol and conception rate (CR) in Murrah buffalo heifers. Buffalo heifers (n=25) were divided into two groups i.e. control group (n=9) and short-term...

Author(s)
Verma, K. K.; Shiv Prasad; Mohanty, T. K.; Kumaresan, A.; Layek, S. S.; Patbandha, T. K.; Datta, T. K.; Chand, S.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2016, 44, 1, pp 281-286
Abstract

Chemical pregnancy testing is an alternative to traditional methods of pregnancy diagnosis (either manual palpation or ultrasound) in postpartum dairy cows and heifers. The objective was to validate a chemical pregnancy test that confers the advantages of using whole blood, rapid incubation times,...

Author(s)
Mayo, L. M.; Moore, S. G.; Poock, S. E.; Silvia, W. J.; Lucy, M. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 9, pp 7634-7641
Abstract

Effects of phytoestrogen isoflavones in Berseem clover on hormonal balance during early pregnancy and fertility of heifers were studied. Holstein heifers (n=26) were divided into two equal homogenous groups. Heifers in the first group (Clover-fed group) were fed Egyptian clover (Trifolium...

Author(s)
Hashem, N. M.; El-Azrak, K. M.; Sallam, S. M. A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2016, 170, pp 121-127

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