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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Heritability of predicted daily enteric methane emissions from growing Nellore cattle

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Autor(es):
Sobrinho, T. L. P. [1] ; Mercadante, M. E. Z. [2] ; Canesin, R. C. [2] ; Cyrillo, J. N. S. G. [2] ; Albuquerque, L. G. [1] ; Branco, R. H. [2]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Jaboticabal, SP - Brazil
[2] Inst Zootecnia, Ctr APTA Bovinos Corte, Sertaozinho, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Genetics and Molecular Research; v. 14, n. 4, p. 14123-14129, 2015.
Citações Web of Science: 0
Resumo

The objective of this study was to estimate the heritability of predicted daily enteric methane emissions (PME) from growing Nellore cattle. Dry matter intake (DMI) records of 955 Nellore animals that were born between 2004 and 2013, which were obtained in a postweaning performance test lasting 83 +/- 15 days, were used. The PME of each animal, obtained as MJ/day and converted to g/day, was estimated using three equations: PME1 (MJ/day) = 2.29 + 0.647 x DMI (kg/day), PME2 (MJ/day) = 3.96 + 0.561 x DMI (kg/day), and PME3 (MJ/day) = 4.41 + 0.50 x DMI (kg/day). The heritability (h(2)) of PME obtained using the three equations was identical to the h(2) of DMI, regardless of whether the model included the effect of mid-test weight (h(2) = 0.32 +/- 0.069) or not (h(2) = 0.48 +/- 0.069). The equations were based exclusively on variations in DMI, and detected variations in this trait without taking into consideration individual differences in enteric methane emission caused by differences in fermentation and digestion capacity. Therefore, prediction equations of enteric methane emission from DMI are not adequate to estimate differences between animals. (AU)

Processo FAPESP: 10/52201-1 - Seleção para produção de carne bovina com redução da emissão de gases de efeito estufa
Beneficiário:Maria Eugênia Zerlotti Mercadante
Linha de fomento: Auxílio à Pesquisa - Regular