Avaliação da utilização do "cio do potro" na coleta de embriões

Carvalho, G. A.; Fonseca, Francisco Aloizio; Filho, José Monteiro da Silva; Ruas, José Reinaldo Mendes; Borges, Álan Maia

doi:10.1590/s1516-35982001000600009

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…The results concerning the use of donor’s foal heats (Table 3) were similar to those obtained by Carvalho et al. (2001a); there were no differences in embryo recovery rates between mares mated in the foal heat or in another heat (57.9% vs 50.0%, respectively), although that author obtained a lower recovery rate.…”

Section: Discussionsupporting

confidence: 73%

“…The results concerning the use of donor's foal heats (Table 3) were similar to those obtained by Carvalho et al (2001a); there were no differences in embryo recovery rates between mares mated in the foal heat or in another heat (57.9% vs 50.0%, respectively), although that author obtained a lower recovery rate. Similarly, the results of the present study are higher than the values obtained by Huhtinen et al (1996), that reported embryo recovery rates of 48 (11 ⁄ 23) and 71% (10 ⁄ 14), for foal heat and for subsequent cycles, respectively, although these values were not significantly different (p > 0.05), possibly because of the small number of observations.…”

Section: Discussionsupporting

confidence: 73%

“…Embryos were collected 7–9 days after ovulation, and only grade 1 and 2 embryos (Carvalho et al. 2001a) were transferred.…”

Section: Methodsmentioning

confidence: 99%

“…Embryos were collected 7-9 days after ovulation, and only grade 1 and 2 embryos (Carvalho et al 2001a) were transferred. Approximately one to three litres of Ringer's lactate solution was used for uterine flushings at 35°C, as described by Alvarenga et al (1993).…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Reproductive Parameters of Mangalarga Marchador Mares in a Commercial Embryo Transfer Programme

Lopes¹,

Siqueira

Pinho

et al. 2011

Reprod Domestic Animals

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The objective of this study is to evaluate the reproductive efficiency in donors and recipient Mangalarga Marchador mares in commercial programmes of embryo transfer (ET) and the effects of some reproductive characteristics and ET methodology on conception rates in the recipient mares. A total of 1140 flushing procedures were performed and 830 embryos (72.8%) were recovered. There were no differences between the rates of embryonic recovery in the different breeding seasons (p > 0.05) and 92.8% of the recovered embryos were 8-9 days old. There was no difference in the embryonic recovery regarding the collection order from the first to the ninth embryo collection along the breeding season, as well as among mares inseminated during the foal heat or subsequent cycles (p > 0.05). Pregnancy rates observed in the total period of all reproductive seasons at 15, 30, 45 and 60 days of pregnancy were 73.4, 69.9, 66.7 and 64.5%, respectively. Differences in pregnancy rate and early embryonic loss rates were not observed between embryos transferred immediately after collection (66.8% and 13.5%) and embryos transported at room temperature for periods of < 1 h (62.9% and 14.4%; p > 0.05). Pregnancy rates were higher when the interval between ovulations of donor and recipient mares remained between -3 and -2 days (p < 0.05), and the lowest rates were observed for intervals of -6 days (p < 0.05) with intermediary values for intervals of -1, 0 and +1 (p > 0.05). Embryonic loss rates, however, did not differ between intervals of ovulation's synchronism between donor and recipient mares (p > 0.05). This flexibilization in the ovulatory synchronism between donor and recipient mares optimizes the use of recipient mares, thus reducing costs and facilitating management of horse breeding farms.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionsupporting

confidence: 73%

“…Embryos were collected 7–9 days after ovulation, and only grade 1 and 2 embryos (Carvalho et al. 2001a) were transferred.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Reproductive Parameters of Mangalarga Marchador Mares in a Commercial Embryo Transfer Programme

Lopes¹,

Siqueira

Pinho

et al. 2011

Reprod Domestic Animals

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show abstract

“…As taxas de gestação e perda embrionária não diferiram. Resultados condizentes foram obtidos por Carvalho et al (2001) onde não se observou diferença de recuperações de embriões em éguas no cio do potro comparas a éguas solteiras. Os mesmos indicam a utilização do cio do potro visando o maior proveito da estação de monta.…”

Section: Cobertura No Cio Do Potrounclassified

Leading causes of pregnancy loss in the equine species: Review

Sena

Merchid²,

Almeida³

et al. 2016

Pubvet

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The pregnancy loss are common problems in the creation of equine, being the cause of concern among professionals, the numerous economic losses to the agribusiness sector. Early miscarriages are more incidents late, being attributed to maternal, environmental and embryonic factors. The factors include maternal reproductive tract changes, the mare's age, progesterone deficiency, when the cover reproductive status, failure in maternal recognition of pregnancy covering the foal heat, among others. Environmental factors include maternal stress, nutrition and effect of semen. Late pregnancy losses are fewer incidents and were attributed mainly to infectious disorders related to fetal-placental interactions, as ascending placentitis of origin. Equine herpesvirus type I and leptospirosis are the most common infectious causes, making essential health control and vaccination of the squad. Due to the alarming figures, the aim of this study, a literature review describing the main causes of pregnancy loss in the equine species.

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