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Animal Science Database

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Abstract

A 14-month-old Japanese Black heifer was evaluated on Day 0 (D 0) for enlargement of the right ovary (RO). Transrectal ultrasonography (TRUS) revealed that the RO was markedly enlarged and multicystic, while the left ovary (LO) was small and inactive. The presumptive diagnosis was granulosa-theca...

Author(s)
Ali, H. E.; Kitahara, G.; Torisu, S.; Nibe, K.; Kaneko, Y.; Hidaka, Y.; Osawa, T.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2015, 50, 4, pp 696-703
Abstract

Intravaginal progesterone-releasing devices are largely used both as contraceptives in humans and as a component of oestrous synchronization protocols in cattle. To reduce costs in large-scale timed artificial insemination, the reuse of these releasing devices is common. Passive hormone diffusion,...

Author(s)
Neri, H. L.; Palhao, M. P.; Costa, D. S.; Viana, J. H. M.; Fernandes, C. A. C.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2015, 50, 4, pp 692-695
Abstract

The aim was to characterize changes in the ultrasound characteristics of the CL and uterus in pregnant, inseminated nonpregnant, and cyclic beef heifers and to correlate findings with systemic progesterone (P4) concentrations with the intention of identifying possible markers for early...

Author(s)
Scully, S.; Evans, A. C. O.; Carter, F.; Duffy, P.; Lonergan, P.; Crowe, M. A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2015, 83, 3, pp 449-458
Abstract

The objective of this work was to evaluate the effect of two synchronization methods with prostaglandins F2α (PGF2α) on heifers and multiparous cows. Fourty-three Bos indicus cows (white and Red Fulani) were divided into four groups in a two-by-two factorial structure, parity x method of...

Author(s)
Bayemi, P. H.; Leinyuy, I.; Nsongka, M. V.; Webb, E. C.; Nchadji, J. M.; Cavestany, D.; Perera, B. M. A. O.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2015, 47, 1, pp 159-162
Abstract

The objectives were (i) to evaluate the effect of temperament, determined by modified 2-point chute exit and gait score, on artificial insemination (AI) pregnancy rates in beef heifers following fixed time AI and (ii) to determine the effect of temperament on cortisol, substance-P, prolactin and...

Author(s)
Kasimanickam, R.; Schroeder, S.; Assay, M.; Kasimanickam, V.; Moore, D. A.; Gay, J. M.; Whittier, W. D.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2014, 49, 5, pp 775-782
Abstract

It is known that lumpy skin disease virus (LSDV) can be shed in bull semen following infection and also that artificial insemination (AI) poses a biosecurity risk. However, it is not known whether the use of LSDV infected semen in AI poses a biosecurity risk. The aim of this study was to...

Author(s)
Annandale, C. H.; Holm, D. E.; Ebersohn, K.; Venter, E. H.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Transboundary and Emerging Diseases, 2014, 61, 5, pp 443-448
Abstract

The aim of the present study was to investigate the effect of short-term progesterone (P4) supplementation during the early metoestrous period on circulating P4 concentrations and conceptus development in cattle. The oestrous cycles of cross-bred beef heifers were synchronised using a 7-day...

Author(s)
O'Hara, L.; Forde, N.; Carter, F.; Rizos, D.; Maillo, V.; Ealy, A. D.; Kelly, A. K.; Rodriguez, P.; Isaka, N.; Evans, A. C. O.; Lonergan, P.
Publisher
CSIRO, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2014, 26, 2, pp 328-336
Abstract

The objective was to determine the accuracy of a pregnancy test for predicting nonpregnant cattle based on the evaluation of corpus luteum (CL) blood flow at 20 d (CLBF-d20) after timed artificial insemination (TAI). Crossbred Holstein-Gir dairy heifers (n=209) and lactating cows (n=317) were...

Author(s)
Siqueira, L. G. B.; Areas, V. S.; Ghetti, A. M.; Fonseca, J. F.; Palhao, M. P.; Fernandes, C. A. C.; Viana, J. H. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2013, 96, 10, pp 6461-6472
Abstract

In this study, 53 crossbred beef heifers were used to test the hypotheses that administration of exogenous FSH 2 days following CIDR insertion and administration of estradiol would increase the pregnancy rate in heifers synchronized for FTAI and that plasma leptin concentrations in beef heifers...

Author(s)
Gentry, G. T., Jr.; Gentry, L. R.; Godke, R. A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2013, 138, 1/2, pp 49-54
Abstract

The aim of this study was to investigate the effects on follicle stimulating hormone (FSH) secretion and dominant follicle (DF) growth, of treatment of Bos indicus heifers with different combinations of intra-vaginal progesterone releasing devices (IPRD), oestradiol benzoate (ODB), PGF and eCG....

Author(s)
Edwards, S. A. A.; Phillips, N. J.; Boe-Hansen, G. B.; Bo, G. A.; Burns, B. M.; Dawson, K.; McGowan, M. R.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2013, 137, 3/4, pp 129-136

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