Study of the incidence of right-horn and left-horn pregnancies, a possible correlation between the uterine horn and the sex of the calves

Authors

  • Washington Fogli Silveira Secretaria da Agricultura e Abastecimento de São Paulo, Instituto de Pesca, São Paulo, SP
  • José Marques Reis Secretaria da Agricultura e Abastecimento de São Paulo, Instituto de Pesca, São Paulo, SP
  • Oziel Bizutti Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Luiz Benito Gambini Agricultura do Estado de São Paulo, Instituto de Zootecnia, São Paulo, SP
  • Carlos Olímpio Meirelles dos Santos

DOI:

https://doi.org/10.11606/issn.2318-3659.v22i1p59-64

Keywords:

Uterine horn, Pregnancy diagnosis, Sex ratio, Cows

Abstract

Through retal palpation the pregnant uterine horn was determined. Thus 1009 single pregnancies of Holstein and red Holstein cows, pure breed and cross-breed, were analysed.Through X2 (chi-square) analysis, fixing the rejection level of nullity hypothesis at 5% (P < 0.05), differences between pregnant uterine horns were statistically significant. Values were greater in the right uterine than in the left uterine hom in pure breed and cross-breed Holstein cows, being this distribution note similar in the pure breed cross-beed red Holstein cows. Both in Holstein and red Holstein cows the correlations between the sex of the calves and the pregnant uterine horns were not statistically significant.

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Published

1985-03-15

Issue

Vol. 22 No. 1 (1985)

Section

REPRODUCTION

How to Cite

Study of the incidence of right-horn and left-horn pregnancies, a possible correlation between the uterine horn and the sex of the calves. (1985). Revista Da Faculdade De Medicina Veterinária E Zootecnia Da Universidade De São Paulo, 22(1), 59-64. https://doi.org/10.11606/issn.2318-3659.v22i1p59-64