Staff Members - Benha University
Estimation of crossbreeding parameters for egg production traits in crossing Golden Montazah with White Leghorn chickens - 2012
Livestock Research for Rural Development 24 (4), 2012 • 2012
Publication Information
Authors
Iraqi M.M., Khalil M.H., El-Attrouny M.M.
Keywords
Direct additive effect, direct heterosis, maternal heterosis, partial egg recording
Journal
Livestock Research for Rural Development 24 (4), 2012
Publisher
Fundación CIPAV, Cali, Colombia, Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, Cali, Colombia
Volume
24
Issue
4
Pages
Article #55
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
A crossbreeding experiment was executed between the local strain of Golden Montazah (GM) and a White Leghorn (WL) strain-breed. Data on 996 pullets from 79 sires and 441 dams were produced for five genetic groups (two purebreds and three crossbreds). Crossbreeding effects (direct additive effects, direct and maternal heterosis, and direct recombination) for age traits (ASM) and body weight
(BWSM) at sexual maturity, weight of the first egg (WFE), egg number (EN90D) and egg mass (EM90D) during the first 90-days, total egg number (EN120D) and total egg mass (EM120D) during the 120-days of laying, and rate of laying egg per day during 90 days (RL90D) and 120 days (RL120D) were estimated. Partial recording traits such as period (days) in which first ten eggs were laid (PF10E),
egg mass for first ten eggs (EMF10E), egg number (EN2D/W) and egg mass (EM2D/W) for two days per week, egg number (EN1W/M) and egg mass (EM1W/M) for one week per month, as well as pause periods during 90 days (PP90D) and 120 days (PP120D) were also studied. Single-trait animal model analysis was used to analyze the data of egg production traits.
Results showed that WL strain had superiority in most of the studied traits compared to GM, but GM strain had significantly heavier BWSM and WFE than WL. Averages of most of the traits studied in crossbreds were higher than purebreds. Percentages of direct additive effects were mostly positive (P
(BWSM) at sexual maturity, weight of the first egg (WFE), egg number (EN90D) and egg mass (EM90D) during the first 90-days, total egg number (EN120D) and total egg mass (EM120D) during the 120-days of laying, and rate of laying egg per day during 90 days (RL90D) and 120 days (RL120D) were estimated. Partial recording traits such as period (days) in which first ten eggs were laid (PF10E),
egg mass for first ten eggs (EMF10E), egg number (EN2D/W) and egg mass (EM2D/W) for two days per week, egg number (EN1W/M) and egg mass (EM1W/M) for one week per month, as well as pause periods during 90 days (PP90D) and 120 days (PP120D) were also studied. Single-trait animal model analysis was used to analyze the data of egg production traits.
Results showed that WL strain had superiority in most of the studied traits compared to GM, but GM strain had significantly heavier BWSM and WFE than WL. Averages of most of the traits studied in crossbreds were higher than purebreds. Percentages of direct additive effects were mostly positive (P