Model comparisons for genetic evaluation of gait type in Mangalarga Marchador horses
| العنوان: | Model comparisons for genetic evaluation of gait type in Mangalarga Marchador horses |
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| المؤلفون: | Bárbara da Conceição Abreu Silva, Rogério Abdallah Curi, Mayara Gonçalves Fonseca, Rachel Santos Bueno Carvalho, Ricardo Vieira Ventura, José Bento Sterman Ferraz, Bruna Aparecida dos Santos, Guilherme Luis Pereira, Fabyano Fonseca e Silva, Henrique Nunes de Oliveira, Joanir Pereira Eler, Fernando de Oliveira Bussiman, Júlio Cesar de Carvalho Balieiro, Elisângela Chicaroni de Mattos |
| المساهمون: | Universidade de São Paulo (USP), Universidade Federal de Viçosa (UFV), Universidade Estadual Paulista (Unesp) |
| المصدر: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| بيانات النشر: | Elsevier BV, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0301 basic medicine, General Veterinary, biology, Gaited horse, Bayesian inference, Bayesian probability, 0402 animal and dairy science, Threshold models, Context (language use), Mangalarga, 04 agricultural and veterinary sciences, Heritability, biology.organism_classification, MARCHA (LOCOMOÇÃO), 040201 dairy & animal science, 03 medical and health sciences, Extreme categorical problem, 030104 developmental biology, Gait (human), Statistics, Trait, Animal Science and Zoology, Threshold model, Categorical variable, Mathematics |
| الوصف: | Made available in DSpace on 2020-12-12T02:15:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-09-01 Mangalarga Marchador (MM) is a very important Brazilian gaited horse breed. These animals show two gait types, differing in proportion of lateral or diagonal movements. Thus, it is possible to consider the gait type as a binary categorical trait in our statistical models. Threshold models (TM) are strongly recommended to handle binary traits for genetic evaluation purposes. However, TM are susceptible to the extreme categorical problem (ECP). ECP is usually observed due to the absence of variation within subclasses for a given systematic effect and can be avoided after handling this effect as random or by combining different systematic effects in the model. In this context, we aimed to find the most suitable systematic effect (based on goodness-of-fit and predictive ability) to be included in Bayesian threshold model for the genetic evaluation of gait type in MM horses. The dataset consisted of 1,231 gait type records and 3,172 animals in the pedigree file. Phenotypic record associated with gait type was treated as a categorical trait (MP = 0 and MB = 1). In summary, models with small complexity were benefited by smaller bias and average prediction errors. Additionally, these models showed higher heritability estimates. ECP was an important issue, and should always be approached when using threshold models for genetic evaluation. Bioinformatic and Animal Breeding Lab. Department of Animal Nutrition and Production College of Veterinary Medicine and Animal Science University of São Paulo (VNP-FMVZ/USP), Av. Duque de Caxias Norte, 225, 13.635-900 Department of Animal Science Federal University of Viçosa (DZO-UFV), Av. P H Rolfs, s/n, 36.570-900 Department of Basic Sciences College of Animal Science and Food Engineering University of São Paulo (ZAB-FZEA/USP), Av. Duque de Caxias Norte, 225, 13.635-900 Department of Animal Science College of Agricultural and Veterinary Sciences São Paulo State University (FCAV/UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, 14.884-900 Group of Animal Breeding and Biotechnology Department of Veterinary Medicine College of Animal Science and Food Engineering University of São Paulo (GMAB/ZMV-FZEA/USP), Av. Duque de Caxias Norte, 225, 13.635-900 Department of Morphology and Animal Physiology College of Agriculture and Veterinary Science São Paulo State University (FCAV/UNESP), access route Paulo Donato Castellane Department of Animal Improvement and Nutrition College of Veterinary Medicine and Animal Science São Paulo State University (FMVZ/UNESP), Rua José Barbosa de Barros, 1780, Fazenda Experimental Lageado, 18.618-307 Department of Animal Science College of Agricultural and Veterinary Sciences São Paulo State University (FCAV/UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, 14.884-900 Department of Morphology and Animal Physiology College of Agriculture and Veterinary Science São Paulo State University (FCAV/UNESP), access route Paulo Donato Castellane Department of Animal Improvement and Nutrition College of Veterinary Medicine and Animal Science São Paulo State University (FMVZ/UNESP), Rua José Barbosa de Barros, 1780, Fazenda Experimental Lageado, 18.618-307 |
| تدمد: | 1871-1413 |
| DOI: | 10.1016/j.livsci.2020.104168 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6498053e3f54110f293b182111f57fa5 https://doi.org/10.1016/j.livsci.2020.104168 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....6498053e3f54110f293b182111f57fa5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18711413 |
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| DOI: | 10.1016/j.livsci.2020.104168 |