Effects of mass selection on egg production on some reproductive traits in Japanese quail


Durmus I., Alkan S., Narinc D., KARABAĞ K., KARSLI T.

EUROPEAN POULTRY SCIENCE, vol.81, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81
  • Publication Date: 2017
  • Doi Number: 10.1399/eps.2017.168
  • Journal Name: EUROPEAN POULTRY SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Japanese Quail, genetics, mass selection, Grossman model, egg production, persistency, COMPLETE NUTRITIONAL ENVIRONMENTS, COTURNIX-COTURNIX-JAPONICA, LONG-TERM SELECTION, 4-WEEK BODY-WEIGHT, DIVERGENT SELECTION, SEXUAL-MATURITY, GENETIC-PARAMETERS, GROWTH CURVE, CORRELATED RESPONSES, ABDOMINAL FAT
  • Akdeniz University Affiliated: Yes

Abstract

Most of the selection studies in Japanese quail have focused on high body weight or short-term egg production. The effect of selection on long-term egg production is not well known. Japanese quail lines were subjected to phenotypic mass selection in different ways over 11 generations and a control group was reproduced by random mating. A high body weight line (HL), a low body weight line (LL) (based on 5-week body weight), a line (L) subjected to selection for egg production (120 day) and a control line (C) were used. Age at sexual maturity, egg weight, total number of eggs for 45 weeks and body weight of the lines were determined. A nonlinear regression analysis using the Grossman egg production function was used for the comparison of egg productions of the flocks.