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Browsing Gwyddorau Biolegol, Amgylcheddol a Gwledig / Biological, Environmental & Rural Sciences by Author

Browsing Gwyddorau Biolegol, Amgylcheddol a Gwledig / Biological, Environmental & Rural Sciences by Author "Newcombe, John R."

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The effect of age on multiple ovulation rates, multiple pregnancy rates and embryonic vesicle diameter in the mare

Davies-Morel, Mina Clare Gwynne; Newcombe, John R.; Swindlehurst, Jennifer C. (2005-06-01)

Numerous and conflicting reports exist regarding factors that may effect mare reproductive performance, in particular multiple ovulation (MO) and its consequences. Sequential ultrasonic examination was used to monitor 3075 ...
The efficacy of different hCG dose rates and the effect of hCG treatment on ovarian activity: Ovulation, multiple ovulation, pregnancy, multiple pregnancy, synchrony of multiple ovulation; in the mare

Davies-Morel, Mina Clare Gwynne; Newcombe, John R. (2008-12)

Despite the widespread use of hCG to advance ovulation in the mare there is little information on efficacy of dose rates and any contraindications of its use. This study aims to investigate the effect of dose of hCG on ...
Factors affecting gestation length in the Thoroughbred mare

Davies-Morel, Mina Clare Gwynne; Holland, S. J.; Newcombe, John R. (2002-12-16)

In order to assist in the accurate prediction of the timing of parturition in the mare true gestation length, along with the potential effect of a number of factors, was investigated. Data from 433 Thoroughbred foal ...
The relationship between consecutive pregnancies in Thoroughbred mares. Does the location of one pregnancy affect the location of the next, is this affected by mare age and foal heat to conception interval or related to pregnancy success

Davies-Morel, Mina Clare Gwynne; Hinchliffe, John Richard; Newcombe, John R. (2009-04-15)

Delayed uterine involution is a major cause of early reproductive failure in mares. Involution is affected by mare age, and foaling to covering interval. Involution rates vary between the previously non-gravid horn (PNGH), ...

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