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Animal Science Database

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Abstract

Numerous treatments and protocols have been used to control the reproductive cycle in cattle, with varying effectiveness and many involving the administration of steroid hormones. Steroid hormones, such as estradiol, are perceived as having a negative impact on consumer health. This internationally ...

Author(s)
Yapura, M. J.; Zwiefelhofer, E. M.; Pierson, R. A.; Adams, G. P.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 112, pp 18-25
Abstract

The antral follicle count (AFC) in cattle is consistent throughout the estrous cycle of individual cows, and cows with a lower AFC have lower fertility. We assessed the AFC at random stages of the estrous cycle, examined the correlation between AFC classifications, and determined the relationship...

Author(s)
Martinez, M. F.; Sanderson, N.; Quirke, L. D.; Lawrence, S. B.; Juengel, J. L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 3, pp 466-475
Abstract

The aim of the current work was to analyze the features of ovarian follicular population and their quality in New Zealand white rabbit does synchronized by 24-h controlled doe-litter separation before artificial insemination (AI) during all their reproductive cycles. Synchronized animals were...

Author(s)
Garcia-Garcia, R. M.; Arias-Alvarez, M.; Rebollar, P. G.; Revuelta, L.; Lorenzo, P. L.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 114, 4, pp 423-433
Abstract

AIM: To determine the effects of monopropylene glycol (MPG) on resumption of oestrous cycles and pregnancy rates in mixed-aged cows in commercial herds, when administered for 6 weeks before the planned start of mating (PSM). METHODS: A trial was conducted using 1,814 pasture-fed predominantly...

Author(s)
Chagas, L. M.; Tuñon, G. E.; Taufa, V. K.; Burke, C. R.; Waghorn, G. C.
Publisher
New Zealand Veterinary Association, Wellington, New Zealand
Citation
New Zealand Veterinary Journal, 2010, 58, 1, pp 17-22
Abstract

This chapter gives an overview of sexual maturity, the breeding season, management for better reproductive performance, manipulation of the oestrous cycle, AI and embryo transfer in goats.

Author(s)
Merrall, M.; Moore, R. W.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Occasional Publication - New Zealand Society of Animal Production, 1998, No. 12, pp 173-184
Abstract

Of 276 cows to be mated, 135 were treated with cloprostenol after selection on pre-mating oestrus dates or rectal examination. Treatment was administered on the 6th day of mating. Untreated cows were inseminated, on detection of oestrus, throughout the 14 days. Nine of 135 treated cows were...

Author(s)
Day, A. M.
Citation
New Zealand Veterinary Journal, 1977, 25, 11, pp 300-305

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