A retrospective study of artificial insemination of 251 mares using chilled and fixed time frozen‐thawed semen

Crowe, C. A. M.; Ravenhill, P. J.; Hepburn, Richard; Shepherd, Chris

doi:10.2746/042516408x281199

Cited by 18 publications

(11 citation statements)

References 20 publications

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“…; Crowe et al. ). The administration of a routine standardized antibiotic treatment supported with ecbolic drugs (Newcombe and Cuervo‐Arango ) post‐insemination might have been a better protocol in this matter.…”

Section: Discussionmentioning

confidence: 98%

Effect of Artificial Insemination Protocol and Dose of Frozen/Thawed Stallion Semen on Pregnancy Results in Mares

Govaere

Hoogewijs

Schauwer

et al. 2014

Reprod Domestic Animals

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Contents Deep intra‐uterine insemination is commonly accepted as a routine procedure for artificial insemination in horses. The motives and principles of deep insemination are well described, but the equipment used may differ. In this trial, the efficiency of two different insemination pipettes for deep intra‐uterine insemination in the mare was compared with insemination into the uterine body using commercially available frozen–thawed semen of two stallions of proven fertility. These inseminations were performed using two different doses. The semi‐flexible Minitube pipette was compared with a newly designed insemination device with a more flexible telescopic insemination catheter (Ghent device). The semi‐flexible Minitube pipette performed better than the newly designed insemination device with respect to pregnancy outcome (p = 0.008). The superiority of deep horn insemination over uterine body insemination was reflected by the better pregnancy rates obtained after deep insemination using the same low doses (30.6% better pregnancy rates) (p = 0.0123).

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Section: Discussionmentioning

confidence: 98%

Effect of Artificial Insemination Protocol and Dose of Frozen/Thawed Stallion Semen on Pregnancy Results in Mares

Govaere

Hoogewijs

Schauwer

et al. 2014

Reprod Domestic Animals

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“…The literature in EVJ concerning the stallion has mirrored that of other journals in relation to semenology and the practice of artificial insemination (AI) (von Lepel 1975; Allen et al . 1976; Boyle 1996; Crowe et al . 2008; Morrell et al .…”

Section: Stallionmentioning

confidence: 99%

Fifty years of the British Equine Veterinary Association as a facilitator of progress in equine clinical science

Silver

Jeffcott²,

Rossdale³

2011

Equine Veterinary Journal

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“…In some species where frozen semen gives poor results, storage of semen in the liquid state can result in high pregnancy rates; the boar (Flowers and Alhusen 1992 ) and donkey (Vidament et al 2009 ) are examples. In the stallion, pregnancy rates after insemination with frozen semen can be as high (Loomis 2001 ) or higher (Crowe et al 2008 ) than with chilled semen although there is variability between individual males (Loomis and Graham 2008 ).…”

Section: Semen Preservationmentioning

confidence: 99%

Current and Future Assisted Reproductive Technologies for Mammalian Farm Animals

Hansen

2013

Advances in Experimental Medicine and Biology

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Reproduction in domestic animals is under control by man and the technologies developed to facilitate that control have a major impact on the efficiency of food production. Reproduction is an energy-intensive process. In beef cattle, for example, over 50 % of the total feed consumption required to produce a unit of meat protein is consumed by the dam of the meat animal (Anim Prod 27:367-379, 1978). Sows are responsible for about 20 % of the total feed needed to produce animals for slaughter (Adv Pork Prod 19:223-237, 2008). Accordingly, energy input to produce food from animal sources is reduced by increasing number of offspring per unit time a breeding female is in the herd. Using beef cattle as an example again, life-cycle efficiency for production of weaned calves is positively related to early age at puberty and short calving intervals (J Anim Sci 57:852-866, 1983). Reproductive technologies also dictate the strategies that can be used to select animals genetically for traits that improve production. Of critical importance has been artificial insemination (AI) (Anim Reprod Sci 62:143-172, 2000; Stud Hist Philos Biol Biomed Sci 38:411-441, 2007; Reprod Domest Anim 43:379-385, 2008; J Dairy Sci 92:5814-5833, 2009) and, as will be outlined in this chapter, emerging technologies offer additional opportunities for improvements in genetic selection. Given the central role of reproduction as a determinant of production efficiency and in genetic selection, improvements in reproductive technologies will be crucial to meeting the challenges created by the anticipated increases in world population (from seven billion people in 2011 to an anticipated nine billion by 2050; World population prospects: the 2010 revision, highlights and advance tables. Working Paper No. ESA/P/WP.220, New York) and by difficulties in livestock production wrought by climate change (SAT eJournal 4:1-23, 2007).The purpose of this chapter will be to highlight current and emerging reproductive technologies that have the potential to improve efficiency of livestock production. The focus will be on technologies that manipulate male and female gametes as well as the stem cells from which they are derived and the preimplantation embryo. While technology is crucial to other interventions in the reproductive process like control of seasonal breeding, hormonal regulation of ovulation, estrous cyclicity and pregnancy establishment, feeding to optimize reproduction, minimizing environmental stress, and selection of genes controlling reproduction, these will not be considered here. Rather the reader is directed to other chapters in this volume as well as some reviews on other aspects of artificial manipulation of reproduction (Reprod Fertil Dev 24:258-266, 2011; Reprod Domest Anim 43:40-47, 2008; Reprod Domest Anim 43:122-128, 2008; Soc Reprod Fertil Suppl 66:87-102, 2009; Comprehensive biotechnology, Amsterdam, pp 477-485; Dairy production medicine, Chichester, pp 153-163; Theriogenology 76:1619-1631, 2011; Theriogenology 76:1568-1582, 2011; Theriogenology...

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A retrospective study of artificial insemination of 251 mares using chilled and fixed time frozen‐thawed semen

Abstract: Insemination with frozen semen can achieve conception rates equal to those with chilled semen, enabling the mare owner a greater selection of stallions.

Cited by 18 publications

References 20 publications

Effect of Artificial Insemination Protocol and Dose of Frozen/Thawed Stallion Semen on Pregnancy Results in Mares

Effect of Artificial Insemination Protocol and Dose of Frozen/Thawed Stallion Semen on Pregnancy Results in Mares

Fifty years of the British Equine Veterinary Association as a facilitator of progress in equine clinical science

Current and Future Assisted Reproductive Technologies for Mammalian Farm Animals

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