Estimation of Heterosis, Direct and Maternal Additive Effects from Crossbreeding Experiment Involving Two White Plymouth Rock Lines of Chickens

Select Volume / Issue:

• Vol.1,Issue 1,Jan. 2014

Year:

2014

Type of Publication:

Article

Keywords:

Crossbreeding Hens, Direct Additive Effect, Heterosis, Maternal Additive Effect

Authors:

Lalev, M.; Mincheva, N.; Hristakieva, P.; Oblakova, M.; Ivanova, I.

Journal:

IJRAS

Volume:

1

Number:

1

Pages:

11-15

Month:

January

ISSN:

2348-–3

Note:

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/

Abstract:

Eight hundred one-day-old female chickens from two White Plymouth Rock lines (line L and line К) and their reciprocal crosses obtained from 40 male and 480 females were used to form four genetic groups (LxL, KxK, LxK and KxL). The aim of this study was to investigate the differences among obtained genotypes, the direct and maternal additive effects and the heterosis with regard to the following traits: body weight from 2 to 10 weeks of age and at 18, 26 and 30 weeks of age, age at sexual maturity, egg production per hen-day until 46 weeks of age, average egg weight (between 32 and 46 weeks of age), liveability during the production period, egg fertility, hatchability of set and fertile eggs. The additive genetic model of Dickerson using crossbreeding program was used to determine the crossbreeding effects. The results demonstrated a statistically significant effect of the genotype on body weight during the different age periods (p

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