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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2010 > Volume 9 Number 3 > S.A. Abbas1, A.A. Gasm Elseid2 and M-K.A. Ahmed1

Effect of Body Weight Uniformity on the Productivity of Broiler Breeder Hens

S.A. Abbas1, A.A. Gasm Elseid2 and M-K.A. Ahmed1
1Faculty of Animal Production, University of Khartoum, Khartoum, Sudan 2Arab Company for Livestock Investment and Development, Khartoum, Sudan
Abstract :

Measurements on hen-day and hen-housed egg production, hatchability, fertility, total hatching
eggs, mortality and cracked eggs were made on eight flocks belonging to the Arab Company for Livestock Investment and Development. There were 6000 females and 600 male parent broilers in each flock  Uniformity was calculated by taking a random sample of 7% of the birds in each pen and weighting them on a weekly basis. The flocks were assigned to uniformity groups ranging from 55-80%. The high uniformity group (75-80%) consistently had the highest hen-day and hen-house production over all ages, while the low uniformity group had the lowest hen-day production. The analysis of variance showed that effects of age and uniformity group on all studied traits were highly significant. The effect of age x uniformity group was significant only for total hatched eggs. Percentage hatchability of settable eggs varied from 69.19±1.93 in the 55-59% group to 83.93±1.65 in the 75-80%. The highest levels of uniformity had the highest percentage of cracked eggs (0.30±0.01), while the medium range of uniformity had the lowest percentage of cracked eggs (0.182±0.011 in the 65-69% group). The highest fertility (86.53±1.56) was found in the 65-69% group. The study demonstrates the importance of controlling body weight and the use of restricted feeding to achieve optimum production and fertility in broiler breeder hens.

Keywords :
Flock uniformity, broiler breeder hen, productivity, target weight

Date Deposited : 25 Jun 2011 11:09

Last Modified : 25 Jun 2011 11:09

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Volume 9, Number 3, - 2010 , ISSN 1682-8356

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