Effect of some parental and environmental factors on some ...

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Jun 18, 2008 - corporeo, periodo di ovodeposizione, peso dell'uovo, luce) su alcune caratteristiche riproduttive della qua- ..... age of tom on fertility of unstored semen and se- men held 18 ... males in breeding groups of Japanese quail (Co-.
Effect of some parental and environmental factors on some reproductive traits of Japanese quails

Omer Coban, Ekrem Lacin, Nilufer Sabuncuoglu Zootekni ve Hayvan Besleme Bölümü. Ataturk Üniversitesi, Erzurum, Turkey Corresponding author: Dr. Omer Coban. Department of Animal Husbandry. College of Veterinary Medicine, Ataturk University. 25700 Ilica- Erzurum, Turkey - Tel. + 90 442 6314193 - Fax: + 90 442 6314188 Email: [email protected] Paper received February 26, 2008; accepted June 18, 2008

ABSTRACT The present study was undertaken to determine the influence of parental and environmental factors (body weight, laying period, egg weight and light) on some reproductive characteristics of the Japanese quail. Data pertaining to 2413 eggs obtained from 40 male and 40 female Japanese quails were studied using a logistic regression model. Hatchability was determined to decrease with parent body weights falling below the population mean. Fertility and hatchability were determined to decrease with the ageing of breeder pairs. The relationship between egg weight and fertility was demonstrated to be insignificant, yet the best hatchability was determined in eggs weighing 11-12 grams (P