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Animal Science Database

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Abstract

The use of 4-day CoSynch+Controlled internal drug release (CIDR)+timed artificial insemination (TAI) in dairy heifers has resulted in adequate pregnancy rates compared with the 5-day CoSynch+CIDR+TAI protocol. The objective of this study was to compare follicular growth, timing of ovulation and...

Author(s)
Fishman-Holland, H.; Stoskute, A.; Ferrer, M. S.; Veal, D.; Bittar, J. H. J.; Rollin, E.; Lourenço, J.; Palomares, R. A.
Publisher
Wiley, Oxford, UK
Citation
Veterinary Medicine and Science, 2019, 5, 3, pp 379-389
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
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

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
Abstract

Nine heifers were pre-synchronized (PGF2α, 12 days) and assigned into three groups with 6 repetitions each: (1) CL (∼8 days old, n=13); (2) DIB+CL (n=18); (3) DIB+EB (150 µg of PGF2α and 2 mg estradiol benzoate, n=18). After progesterone (P4) device removal (8 days) and/or final PGF2α, heifers were ...

Author(s)
Cipriano, R. S.; Carvalho, B. A.; Marangoni, N. R.; Nogueira, G. P.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2011, 127, 1/2, pp 16-22
Abstract

The objective was to compare pregnancy rates in nulliparous Holstein heifers given PGF 24 h before, or concurrent with, removal of an intravaginal progesterone-releasing (CIDR) insert in 3 timed artificial insemination (TAI) protocols. Heifers (from 2 herds) were assigned randomly, over 11 mo, to ...

Author(s)
Ambrose, D. J.; Emmanuel, D. G. V.; Colazo, M. G.; Kastelic, J. P.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2008, 91, 7, pp 2678-2683
Abstract

In the 1st of 2 experiments, 208 crossbred yearling heifers were synchronized in oestrus with Syncro-Mate-B, artificially inseminated 48-54 h after implant removal (day 1) and fed MGA from day 17 to day 21 (0.5 mg/head daily) or not treated (controls). Oestrus synchrony was defined as the 3-day...

Author(s)
Purvis, H. T., II; Whittier, J. C.
Citation
Theriogenology, 1997, 48, 3, pp 423-434

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