Gestation period and age at the first calf in Nellore cows (Ongole bred)

Authors

  • João Soares Veiga Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Zootecnia Especial e Exterior dos Animais Domésticos, São Paulo, SP
  • Armando Chieffi Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Zootecnia Especial e Exterior dos Animais Domésticos, São Paulo, SP
  • Orlando M. Paiva Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Anatomia Descritiva dos Animais Domésticos, São Paulo, SP

DOI:

https://doi.org/10.11606/issn.2318-5066.v3i3p55-59

Keywords:

The article has no key-words.

Abstract

254 gestation periods in Nellore cows (Ongole bred) averaged 291.1 ± 0.50 days. When the animals were male ones the gestation periods averaged 291.9 ± 0.36 days. When they were female ones the average of gestation periods of the cows was 290.4 ± 0.46 days. That difference (1.1 day) is not significant. In São José Farm, at Bauru, S. Paulo State, Brasil, Nellore heifers are breed with bulls when they as 24 months old. The average age they drop theirs first calves is about 40 months and 19 days.

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Published

1946-12-15

Issue

Vol. 3 No. 3 (1946)

Section

UNDEFINIED

How to Cite

Gestation period and age at the first calf in Nellore cows (Ongole bred). (1946). Revista Da Faculdade De Medicina Veterinária, Universidade De São Paulo, 3(3), 55-59. https://doi.org/10.11606/issn.2318-5066.v3i3p55-59