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Title: Growth curve of locally adapted pantaneiro cows raised under natural conditions
Authors: Barbosa, Eleonora Araújo
Egito, Andréa Alves do
Abreu, Urbano Gomes Pinto de
Juliano, Raquel Soares
Silva, Joseane Padilha
Mariante, Arthur da Silva
Ramos, Alexandre Floriani
Assunto:: Produção animal
Bovino - genética
Issue Date: 2013
Publisher: Sociedade Brasileira de Zootecnia
Citation: BARBOSA, Eleonora Araújo et al. Growth curve of locally adapted pantaneiro cows raised under natural conditions. Revista Brasileira de Zootecnia, Viçosa, v.42, n.11, p.774-779, nov. 2013. DOI: Disponível em: Acesso em: 05 ago. 2020.
Abstract: The objective of this study was to use morphometric and ultrasound evaluations to estimate the growth curve of the Pantaneiro cattle breed, raised in its natural habitat, aiming at the re-insertion of this breed in production systems. One hundred and three females, aging from months to 11 years, and raised on native pastures, were evaluated. The animals belonged to the Conservation Nucleus of Embrapa Pantanal, located in the Pantanal of Mato Grosso do Sul (Brazil). Weight, thoracic perimeter (TP), body length (BL), rump height (RH), height at withers (HW), hip height (HH), depth (DP), distance between the ilia (DI) (cm) and rib-eye area (REA) were measured. To relate the measurements with the age of the animals, the univariate regression model was used, assigning the variable response to gamma distribution. The Pearson correlation between variables was also estimated. The inflection point of the growth curve was 37 months for HH; between 38 and 39 months for TP and HW; between 40 and 41 months for DI, HH and DP; and 45 months for BL. The REA results could not fit in a statistical model. The majority of the variables presented a correlation above 60% among themselves, except for REA × Age, of 15.81%; REA × HW, of 34.44%; HH × Age, of 46.19; HH × DI, of 58.07%; REA × HH, of 24.57%; and REA × TP, of 39.9%. The cows showed maturity age at 40 months, which may have occurred because they were raised in natural farming conditions. In Pantaneiro cows reared in extensive systems only on natural pastures, the use of ultrasound is not effective to estimate the curve of muscular development, perhaps because this breed was not selected for weight gain.
Licença:: Revista Brasileira de Zootecnia - (CC BY-NC) - All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Fonte: Acesso em: 05 ago. 2020.
Appears in Collections:FAV - Artigos publicados em periódicos

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