Estimates of heterosis for in vitro embryo production using reciprocal crosses in cattle

Fischer, Anne; Bernal, D.P.; Gutierrez-Robayo, C.; Rutledge, J. J.

doi:10.1016/s0093-691x(00)00465-9

Cited by 12 publications

(10 citation statements)

References 13 publications

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“…However, the percentage of viable oocytes obtained in our study was similar to those observed in other breeds (Fischer et al, 2000;Ribeiro et al, 2011).…”

supporting

confidence: 92%

Short communication: In vitro oocyte maturation and fertilization rates in the Spanish Lidia bovine breed

Demyda-Peyrás

Hidalgo

Dorado

et al. 2013

Span. j. agric. res.

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The Lidia bovine breed is the most successful cattle breed on the Iberian Peninsula, also considered a hallmark of Spanish tradition and image around the world. The aims of the study were to characterize the oocyte recovery rates and to evaluate the effect of two standard in vitro maturation protocols on oocyte maturation (cumulus expansion and nuclear maturation) and fertilization rates after in vitro fertilization in this breed. For this purpose, 261 ovaries from Lidia cows were processed obtaining 1,125 viable cumulus oocyte complexes (COCs). The oocyte recovery rate obtained (4.31 viable COCs per ovary) was lower than those described previously in other studied breeds. Maturation rates were evaluated in two different oocyte maturation media with (M1) and without (M2) hormonal supplementation. The percentage of COCs with expanded cumulus cells was significantly lower in M1 (74.35%) compared with M2 (82.25%). Metaphase II (MII) rates (67.75% in M1 and 73.18% in M2) were similar to previous studies in different cattle populations. M2 significantly improved the percentage of COCs with their cumulus cells expanded (p<0.01) and nuclear maturation rates (p<0.05), but it did not affect the fertilization percentages obtained in this experiment. In conclusion, our study suggests that oocytes of the Lidia cattle breed can be obtained, matured and fertilized following standard protocols previously used in other cattle breeds.

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“…However, the percentage of viable oocytes obtained in our study was similar to those observed in other breeds (Fischer et al, 2000;Ribeiro et al, 2011).…”

supporting

confidence: 92%

Short communication: In vitro oocyte maturation and fertilization rates in the Spanish Lidia bovine breed

Demyda-Peyrás

Hidalgo

Dorado

et al. 2013

Span. j. agric. res.

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“…Such heterosis has also been reported in gilts [28], B. taurus × B. indicus [29] and B. taurus [30,31], although in another study [27], no evidence of heterosis was found for crosses within B. taurus breeds or between B. taurus and B. indicus. The cause of this discrepancy is not clear, but it is possible that breed maternal effects can influence outcome [32].…”

Section: Developmental Competence Of Ivf Yak F1 Embryosmentioning

confidence: 63%

“…Individual bulls effects in IVF might have contributed to these differences [15,24], but our previous work also showed that the blastocyst yield of cattle oocytes fertilized with yak spermatozoa was greater than for homologous cattle IVF [11]. Such heterosis has also been reported in gilts [28], B. taurus × B. indicus [29] and B. taurus [30,31], although in another study [27], no evidence of heterosis was found for crosses within B. taurus breeds or between B. taurus and B. indicus. The cause of this discrepancy is not clear, but it is possible that breed maternal effects can influence outcome [32].…”

Section: Discussionmentioning

confidence: 81%

“…The lower development of yak embryos might also be related to the culture system, which has been developed specifically for use in cattle. Oliveira-Filho et al [26] and Fischer et al [27] attributed lower blastocyst formation rates in B. indicus to the greater compatibility of the culture system with B. taurus gametes. Also, the blastocyst rates of yak hybrid embryos observed in this study were much greater than those reported in previous studies [9,10].…”

Section: Discussionmentioning

confidence: 99%

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Developmental Competence of Embryos Derived from Reciprocal In Vitro Fertilization between Yak (Bos grunniens) and Cattle (Bos taurus)

Yin

Chen

et al. 2009

Journal of Reproduction and Development

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Abstract. The purpose of this study was to investigate fertilization ability and embryo development to the blastocyst stage after reciprocal in vitro fertilization (IVF) between yak and cattle in an attempt to clarify the problem of low conception rate after mating yak females with cattle bulls. In vitro-matured (IVM) cattle and yak oocytes were inseminated with either Holstein or yak spermatozoa, and after an 18-h of coincubation period, a proportion of the oocytes was fixed and examined for sperm penetration, polyspermy and male pronuclear formation. The remaining oocytes were cultured in vitro and evaluated for cleavage and blastocyst formation rates. The percentage of IVM oocytes penetrated by spermatozoa ranged from 78.5 to 90.5%, and the formation of one or two pronuclei and the incidence of polyspermy did not differ among the different combinations. The cleavage and blastocyst rates were not affected by the species of the sperm, but they were affected by the species of the oocytes (P<0.05), with cattle oocytes having a higher (P<0.05) cleavage and blastocyst rates (69.9 and 31.3%) than yak oocytes (62.7 and 11.5%). The blastocyst formation rate was calculated from the cleaved zygotes. The interaction between sire and oocytes species (P<0.05) influenced blastocyst formation rate, with the highest blastocyst rate occurring in cattle oocytes fertilized with yak spermatozoa (36.5%) and the lowest rate occurring in yak oocytes fertilized with yak spermatozoa (9.4%). The effect of heterosis was apparent at the blastocyst stage, but there was a large reciprocal difference in blastocyst production between crosses. It was concluded that the low conception rate that results from crossing yaks with cattle is not due to either a speciesspecific block of fertilization or the developmental competence of the early stage embryo. Key words: Cattle, Early development, Embryos, In vitro fertilization (IVF), Yak (J. Reprod. Dev. 55: [480][481][482][483] 2009) he yak is one of the world's most remarkable domestic animals -a herbivore living on the "roof of the world", in and around the Himalayas and further north at altitudes ranging from 2500 to 5500 m with no frost-free period and mostly above the tree line. They are very important to local people for meat, milk and draft power given that few other animals survive in these areas. However, their production traits are inferior to those of improved cattle (Bos taurus) breeds [1,2].Interest in the commercial use of local cattle × yak hybrids has existed for at least 3000 years. During this time, attempts have been made to improve meat and milk production (quoted from Wiener et al. [1]). A number of systematic studies carried out from 1950s to 1990s have examined the meat and milk performance of hybrids of yak derived from both natural mating and artificial insemination using semen from exotic breeds of cattle such as the Holstein, Simmental, Hereford and Shorthorn. The results have shown that F1 hybrids from dairy cattle breeds produce 100-300% more milk than the yak [3,4]. ...

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“…Hybrid vigor is observed in both plants and animals, but it has not typically been described for the early stages of animal development. One study of interspecies breeding effects in embryos of bovine species failed to disclose a consistent effect; however, it appeared that interbreeding favored the in vitro development of purebred embryos (i.e., akin to outbreeding depression), an effect that may have resulted from differential effects of in vitro culture on the two species of embryos [39]. In mice, F 1 hybrid embryos tolerate in vitro culture better than embryos from many inbred strains, and F 1 hybrid ooplasm is superior to inbred strain ooplasm for cloning by nuclear transfer [40].…”

Section: Ooplasm Hybrid Vigor Effectmentioning

confidence: 99%

Hybrid Vigor and Transgenerational Epigenetic Effects on Early Mouse Embryo Phenotype1

Han

Mtango

Patel

et al. 2008

Biology of Reproduction

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Mouse embryos display a strain-dependent propensity for blastomere cytofragmentation at the two-cell stage. The maternal pronucleus exerts a predominant, transcription-dependent effect on this phenotype, with lesser effects of the ooplasm and the paternal pronucleus. A parental origin effect has been observed as an inequality in the cytofragmentation rate of embryos produced through genetic crosses of reciprocal F(1) hybrid females. To understand the basis for this, we conducted an extensive series of pronuclear transfer studies employing different combinations of inbred and F(1) hybrid maternal and paternal genotypes. We find that the parental origin effect is the result of a transgenerational epigenetic modification, whereby the inherited maternal grandpaternal contribution interacts with the fertilizing paternal genome and the ooplasm. This result indicates that some epigenetic information related to grandparental origins of chromosomes (i.e., imprinting of chromosomes in the mother) is retained through oogenesis and transmitted to progeny, where it affects gene expression from the maternal pronucleus and subsequent embryo phenotype. These results reveal for the first time that mammalian embryonic development can be affected by the epigenotype of at least three individuals. Additionally, we observe a significant suppression of fragmentation by F(1) hybrid ooplasm when it is separated from the F(1) hybrid maternal pronucleus. This latter effect is a striking example of heterosis in the early mammalian embryo, and it provides a new opportunity for examining the molecular mechanisms of heterosis. These results are relevant to our understanding of the mechanisms of epigenetic effects on development and the possible fertility effects of genetic and epigenetic interactions in reproductive medicine.

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Estimates of heterosis for in vitro embryo production using reciprocal crosses in cattle

Cited by 12 publications

References 13 publications

Short communication: In vitro oocyte maturation and fertilization rates in the Spanish Lidia bovine breed

Short communication: In vitro oocyte maturation and fertilization rates in the Spanish Lidia bovine breed

Developmental Competence of Embryos Derived from Reciprocal In Vitro Fertilization between Yak (Bos grunniens) and Cattle (Bos taurus)

Hybrid Vigor and Transgenerational Epigenetic Effects on Early Mouse Embryo Phenotype1

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