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Animal Science Database

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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

The main objectives of this study were to determine the influence of diets enriched in α-linolenic, linoleic or oleic acid on the development and transcriptomic profile of embryos collected from dairy cattle. Non-lactating Holstein cows received one of the three diets supplemented with 8% rolled...

Author(s)
Salehi, R.; Colazo, M. G.; Tsoi, S.; Behrouzi, A.; Tsang, B. K.; Dyck, M. K.; Oba, M.; Ambrose, D. J.
Publisher
BioScientifica Ltd, Bristol, UK
Citation
Reproduction, 2016, 152, 6, pp 715-726
Abstract

The objectives were to determine if a diet enriched in α-linolenic acid (ALA) would influence ovarian function, early embryo survival, conception rates, and pregnancy losses in lactating dairy cows. Beginning 28 d before breeding, Holstein cows (55±22 d postpartum; mean±SD) were assigned to diets...

Author(s)
Ambrose, D. J.; Kastelic, J. P.; Corbett, R.; Pitney, P. A.; Petit, H. V.; Small, J. A.; Zalkovic, P.
Publisher
American Dairy Science Association, Savoy, USA
Citation
Journal of Dairy Science, 2006, 89, 8, pp 3066-3074
Abstract

Two experiments were conducted to develop protocols for the use of fixed-time artificial insemination and embryo transfer (TAI and TET, respectively) to increase beef cattle productivity. Suckled beef cows were given GnRH (100 µg im) on Day-10, and PGF (25 mg im) on Day-3, with TAI on Day 0 (66 h...

Author(s)
Small, J. A.; Ambrose, D. J.; Kastelic, J. P.; Rajamahendran, R.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Livestock Science, 2008, 118, 3, pp 272-281

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