Folliculogenesis, embryo parameters and post-transfer recipient pregnancy rate following equine follicle-stimulating hormone (eFSH) treatment in cycling donor mares

Raz, Tal; Green, GM; Carley, S.; Card, Catherine M.

doi:10.1111/j.1751-0813.2011.00691.x

Cited by 10 publications

(7 citation statements)

References 32 publications

(44 reference statements)

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“…Pregnancy rates after non-surgical embryo transfer in mares usually range between 50% and 75% (Squires et al, 2003;Raz et al, 2011). In the present study, the pregnancy rates after embryo transfer were acceptable (i.e.…”

Section: Discussionmentioning

confidence: 57%

Hormone supplementation protocol using estradiol benzoate and long-acting progesterone is efficient in maintaining pregnancy of anovulatory recipient mares during autumn transitional phase

Botelho¹,

Pessoa²,

Rocha

et al. 2015

Animal Reproduction Science

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Section: Discussionmentioning

confidence: 57%

Hormone supplementation protocol using estradiol benzoate and long-acting progesterone is efficient in maintaining pregnancy of anovulatory recipient mares during autumn transitional phase

Botelho¹,

Pessoa²,

Rocha

et al. 2015

Animal Reproduction Science

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“…Raz et al . ), and we included MOET scenarios in our study to assess possible consequences in case this technology becomes available to the industry. In this case, ET could be more efficient so that the presented scenarios with up to four or six foals per donor mare and year could be realistic in intensive MOET programmes.…”

Section: Discussionmentioning

confidence: 99%

The potential of embryo transfer in a German horse‐breeding programme

Sitzenstock

Rathke

Ytournel

et al. 2012

J Animal Breeding Genetics

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A reference horse-breeding programme with 13500 foals each year was modelled with ZPLAN+. This new software for the optimization of the structures in breeding programmes is based on ZPLAN. In two scenarios, the implementation of a rigorous selection of mares was implemented. In scenario I, the mare performance test was the point of selection, while in scenario II, further information on 20 competitions in two more years is available. These selected mares were used for embryo transfer (ET), partly in combination with multiple ovulation (MOET). The selection intensity and the number of foals out of (MO)ET were varied in both scenarios. It was expected that 250, 500 and 1000 mares are available for selecting 20, 50, 100 or 200 donor mares each year. The number of foals out of (MO)ET was varied between one and six foals per donor mare and year. Donor mares were used for ET for 4 years. It became clear that with high selection intensities of donor mares and high reproduction rates of them, the yearly genetic gain in a horse-breeding programme could increase over a large range. In scenario II, the additional information on 20 competitions increased the accuracy of the selection index to 0.85. With 200 selected donor mares of 1000 available mares and six foals per year, the genetic gain could almost be doubled compared to the reference scenario. The implementation of ET and a related higher usage of few selected mares entails rising costs and a reduction in the genetic variance. In the most extreme MOET scenario, the effective population size was reduced by 19% relative to the reference scenario. Only if the increase in genetic gain can be converted into higher return for the breeders, the implementation of (MO)ET schemes is a realistic and sensible option for horse-breeding programmes.

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“…Estrus synchronization is used as part of the insemination strategy (timed insemination) on larger stud farms or AI centres (Allen and Cooper, 1975;Bergfelt et al, 2007;Handler et al, 2007;Squires and McCue, 2007), and as such, a single ejaculate from the same stallion can be applied to inseminate several synchronized mares. To gain high success rates in equine ET, it is necessary that the recipient mare is synchronized according to the moment of ovulation of the donor mares (Raz et al, 2011). In this way, pregnancy rates of >70 % can be achieved (Carnevale et al, 1987;McKinnon and Squires, 1988;Jacob et al, 2012;Leemans et al, 2012;Vandenberghe et al, 2012).…”

Section: Regulation Of the Estrous Cyclementioning

confidence: 99%

Kenmerken van de voortplanting en de geassisteerde voortplanting bij de witte (Ceratotherium simum) en zwarte (Diceros bicornis) neushoorn

Ververs¹,

Langhout²,

Govaere³

et al. 2015

Vlaams Diergeneeskundig Tijdschrift

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Despite the worldwide increase of rhinoceros calf numbers, the growth of the population of white and black rhinoceros is slowing down mainly due to anthropogenic causes, such as poaching and habitat loss. Assisted reproduction is one of the methods of preserving the valuable genomes of these animals from being lost, and assists in breeding them in captivity to maintain the specie(s) numbers and provide an option for possible reintroduction into the wild. Since wild rhinoceros are difficult to handle and examine clinically, most of the current information available on their reproductive characteristics has been gained from captive rhinoceros populations. Nevertheless, very little is known about rhinoceros reproduction. Since the rhinoceros belongs to the odd-toed ungulates (Perissodactyls) group, like the horse and the tapir, the horse has been proposed as a suitable model to study reproduction and artificial reproductive techniques in the rhinoceros. In this review, the current knowledge of the reproduction of the rhinoceros is summarized.

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Folliculogenesis, embryo parameters and post-transfer recipient pregnancy rate following equine follicle-stimulating hormone (eFSH) treatment in cycling donor mares

Abstract: The numbers of recipient pregnancies and foals born that resulted from eFSH treatment were not different from the control.

Cited by 10 publications

References 32 publications

Hormone supplementation protocol using estradiol benzoate and long-acting progesterone is efficient in maintaining pregnancy of anovulatory recipient mares during autumn transitional phase

Hormone supplementation protocol using estradiol benzoate and long-acting progesterone is efficient in maintaining pregnancy of anovulatory recipient mares during autumn transitional phase

The potential of embryo transfer in a German horse‐breeding programme

Kenmerken van de voortplanting en de geassisteerde voortplanting bij de witte (Ceratotherium simum) en zwarte (Diceros bicornis) neushoorn

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