102 Identification of Contrasted Phenotypes in the Bovine From Repeated in Vivo and in Vitro Embryo Production Following Superovulation

Guyader-Joly, C.; Ponchon, S.; González, Carlos; Guienne, B. Marquant-Le; Clément, Laetitia; Dalbiès-Tran, Rozenn; Mermillod, Pascal; Humblot, P.

doi:10.1071/rdv20n1ab102

Cited by 3 publications

(2 citation statements)

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“…2011). Vertical phenotyping may therefore bring into play a number of complex techniques, such as ovum pick‐up and embryo‐related biotechnologies, including genotyping (Guyader‐Joly et al . 2008; Humblot et al .…”

Section: High‐throughput Phenotypingmentioning

confidence: 99%

Objectives and applications of phenotyping network set‐up for livestock

Hocquette

Capel

David

et al. 2012

Animal Science Journal

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Providing phenotypic information, which is accurate, reliable, repeatable and comparable across countries or laboratories, is critical to gain a better understanding of the relationship between genes and phenotypes. So far, it is indeed extremely difficult to combine different sources of phenotypic data from multiple origins, partly because of the variability in the methods of phenotyping. The phenotyping program of livestock involves the definition of complex phenotypes obtained from data integration at different levels (from molecules to herds), the implementation of the latest technologies to accurately characterize at high speed and low cost, the greatest number of animals in a better characterized environment, and the development and sharing of large databases for data analysis and modeling. Such a program also involves the construction of a coordinated network of research and professional facilities and a common language with shared definition of unambiguous animal traits and of methods to assess them. To this end, it will build on the 'Animal Trait Ontology of Livestock' (ATOL) project with the objective of defining precisely the phenotypes of interest for farm animals. Then, it will be necessary to combine an environmental information system related to animal husbandry and associated methods to capture the phenotypic differences between animals.

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Section: High‐throughput Phenotypingmentioning

confidence: 99%

Objectives and applications of phenotyping network set‐up for livestock

Hocquette

Capel

David

et al. 2012

Animal Science Journal

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“…As shown before, efficiency of embryo transfer, OPU and IVF, will be critical and these techniques will be probably more used than in the past to increase the number of candidates. There is a large phenotypic variability between individual females for in vivo and in vitro productions [ 43 , 44 ]. Taking into account the genetic index of donor females in OPU-IVP production may also be used to optimize the results [ 44 ].…”

Section: Impact Of Genomic Selection On the Use Of Reproductive Tementioning

confidence: 99%

Reproductive Technologies and Genomic Selection in Cattle

Humblot¹,

Bourhis²,

Fritz

et al. 2010

Veterinary Medicine International

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The recent development of genomic selection induces dramatic changes in the way genetic selection schemes are to be conducted. This review describes the new context and corresponding needs for genomic based selection schemes and how reproductive technologies can be used to meet those needs. Information brought by reproductive physiology will provide new markers and new improved phenotypes that will increase the efficiency of selection schemes for reproductive traits. In this context, the value of the reproductive techniques including assisted embryo based reproductive technologies (Multiple Ovaluation Embryo Transfer and Ovum pick up associated to in vitro Fertilization) is also revisited. The interest of embryo typing is discussed. The recent results obtained with this emerging technology which are compatible with the use of the last generation of chips for genotype analysis may lead to very promising applications for the breeding industry. The combined use of several embryo based reproductive technologies will probably be more important in the near future to satisfy the needs of genomic selection for increasing the number of candidates and to preserve at the same time genetic variability.

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Female Fertility in French Dairy Breeds: Current Situation and Strategies for Improvement

Barbat¹,

Mezec

Ducrocq³

et al. 2010

J. Reprod. Dev.

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Abstract. In most countries where genetic selection for milk production has been conducted, a continuous degradation of reproductive performances has been observed in dairy cattle. This paper describes the phenotypic evolution of fertility traits in France for the main 3 dairy breeds and the different actions undertaken to counteract this unfavourable evolution of reproductive performance. In 2001, functional traits (including conception rate as a fertility trait) have been included into the French total merit index ISU, to take these traits into account in the selection objective. In addition, a marker-assisted selection (MAS) program has been developed since 2001. Through this approach, a set of QTL related to fertility traits were identified using the phenotypic information for fertility collected on a national basis. Fine mapping of these QTL let to their introduction in 2008 in genomic evaluation and the routine selection for fertility traits in breeding schemes. This approach will evolve in the near future through the inclusion of results of several genomic research programs that were conducted either in station or under field conditions aiming at identifying genes and pathways controlling cattle fertility (based on genomics, transcriptomics and proteomics) and at enhancing phenotyping for reproductive performance. The paper describes the general approach behind these evolutions, the expected benefits of genomic selection and first results. Information on the potential use of reproductive technologies that may improve the efficiency of multiple trait genomic selection are also presented.

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102 Identification of Contrasted Phenotypes in the Bovine From Repeated in Vivo and in Vitro Embryo Production Following Superovulation

Cited by 3 publications

References 0 publications

Objectives and applications of phenotyping network set‐up for livestock

Objectives and applications of phenotyping network set‐up for livestock

Reproductive Technologies and Genomic Selection in Cattle

Female Fertility in French Dairy Breeds: Current Situation and Strategies for Improvement

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