Studies relating to ovulation in beef suckler cows
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Studies relating to ovulation in beef suckler cows

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Published by University College Dublin in Dublin .
Written in English

Subjects:

  • Cattle -- Reproduction -- Regulation.,
  • Ovulation.,
  • Graafian follicle.

Book details:

Edition Notes

StatementPatrick Duffy.
ContributionsUniversity College Dublin. Department of Animal Science and Production.
The Physical Object
Paginationvi, 119p. :
Number of Pages119
ID Numbers
Open LibraryOL22410413M

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AHDB Beef & Lamb Contents How fertility affects profitability The annual stocktake figures for suggest that there is room for improvement to reach the target of 94 calves born per cows or heifers put to the bull. Increasing the fertility of a suckler herd will result in: • Increased number/weight of calves weanedFile Size: KB. Improving Genetics in the Suckler Herd • Research at Teagasc Grange has shown benefits to beef suckler cow replacements from the dairy herd having late-maturing “continental” sires rather than early-maturing British beef breed genetics. For example, spring-calving Limousin x Friesian cows were compared with Hereford xFile Size: KB. The profitability of a suckler herd is directly related to the number of calves reared per cow or heifer served annually. This guide covers aspects of suckler cow management that can help improve the health, welfare and productivity of your herd. To view our suckler cow fertility video clips on YouTube, select from the links.   The effects of body condition score (BCS) of 20 or 30 units at calving (low v. moderate), post-partum energy intake at 06 or 10 MJ metabolizable energy (ME) per day per kg M075 (low v. high) and unrestricted or restricted (once daily) suckling on the ability of cows to ovulate were studied in a 2 2 2 factorial design with each treatment replicated eight by:

1. Introduction. In beef cattle, pregnancy/AI (P/AI) is one of the most limiting factors to increase herd reproductive efficiency. Pregnancy/AI is usually 40% to 60% in timed-artificial insemination (TAI) programs,, indicating that a large proportion of inseminated beef cows fails to become pregnant.A considerable portion of this failure is caused by embryonic losses that occur during Cited by: Dairy cows that are not nutritionally stressed generally ovulate their first post-partum dominant follicle (approximately 15 days), whereas beef suckler cows in good body condition normally have a mean of +/- dominant follicles (approximately 30 days) to first ovulation; and beef cows in poor body condition have a mean of +/- Cited by:   There have been few studies published internationally which document herd health management practices in suckler beef herds and no published Irish studies. The study objective was to document herd health status and management practices on sixteen Irish suckler beef herds over a two year period (–). The farms used in the study were part of the Cited by: 3. ELSEVIER INDUCTION OF OVULATION IN POSTPARTUM SUCKLED BEEF COWS: A REVIEW Y. Yavas and J.S. Walton Department of Animal and Poultry Science University of Guelph, Guelph, Ontario, NlG 2W1, Canada Received for publication: December 3, Accepted: April 6, ABSTRACT Prolonged postpartum acyclicity in suckled beef cows Cited by:

and pregnancy success (Lares et al., ). Therefore, cows with a lower uterine pH at time of fixed-time AI had greater pregnancy success compared to cows with a high pH at time of fixed-time AI. A recent study involving the reciprocal embryo transfer of File Size: KB. Control of estrus and ovulation in beef heifers1 D.J. Patterson, J.M. Thomas, B.E. Bishop, J.M. Abel, J.W.C. Locke, and M.F. Smith, Division in methods to control estrus and ovulation in beef cows and heifers, now provides the opportunity to Recent studies suggest that the stimulatory effects of progestins on LH secretion are greatest. Frequency of LH Luteinising hormone: responsible for the final maturation of the follicle and ovulation. pulses is the determining factor in the timing of the first ovulation Expulsion of an ovum from the ovary in female animals.. Post-partum Period between parturition and the return to cyclicity (and therefore appearance of heat). follicular development in dairy cows. In the present study, treatment of early postpartum suckled beef cows with CIDR induced ovulation and initiated estrous cycles with a normal luteal life span in more cows than did treatment with MGA.