EVALUATION OF PURE AND CROSSBRED PARENT STOCK PULLETS

EGG WEIGHT, BODY WEIGHT AND SEXUAL MATURITY

Authors

  • J. A. ADENOWO University of Agriculture, P.M.B. 2240 Abeokuta.
  • S. S. I. OMEJE Enugu State University, Abakaliki.
  • N. I. DIM National Animal Production Research Institute, Ahmadu Bello University, P.M.B. 1096, Zaria.

DOI:

https://doi.org/10.51791/njap.v22i1.2015

Keywords:

Parent stock, pullets, egg weight, body weight, sexual maturity

Abstract

The relationships between egg weight, body weight and sexual maturity and their inheritance were studied in the F1 of two grandparent strains of laying birds. Each strain had two lines. Data used for analyses comprised body weight at first egg, 30 weeks and 40 weeks of age (BFE, B30 and B40); weight of first egg (WFE), weight of egg at 30 weeks and 40 weeks (W30, W40) and age of birds at first egg (AFE). Phenotypic correlations between AFE and BFE, AFE and WFE and between WFE and BFE were 0.45 and 0.40; 0.96 and 0.11, 0.65 and 0.85 for male and female lines respectively. While AFE generally showed additive inheritance which was sire influenced, BFE and WFE were line dependent. The crossbred groups however, appeared to be at advantage over the purebreds in respect of these three traits.

Author Biographies

J. A. ADENOWO, University of Agriculture, P.M.B. 2240 Abeokuta.

Department of Animal Breeding and Genctics

S. S. I. OMEJE, Enugu State University, Abakaliki.

 Departmcat of Animal Production and Fisheries

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Published

2021-01-06

How to Cite

ADENOWO, J. A. ., OMEJE, S. S. I. ., & DIM, . N. I. . (2021). EVALUATION OF PURE AND CROSSBRED PARENT STOCK PULLETS: EGG WEIGHT, BODY WEIGHT AND SEXUAL MATURITY . Nigerian Journal of Animal Production, 22(1), 10–14. https://doi.org/10.51791/njap.v22i1.2015

Issue

Vol. 22 No. 1 (1995)

Section

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