Biological and economic performances of broiler chickens as affected by daylength and food location

Zulkifli I., . and Che Norma M. T., . Biological and economic performances of broiler chickens as affected by daylength and food location. pp. 1-6. ISSN 9128-2506

The effects of daylength and food location on biological and economic performances were studied in broiler chickens. Commencing from 14 days of age equal number of chicks were provided either 12h of natural lighting (12L) only or 12 natural lighting and 12h supplementary lighting (24L). For each lighting regimen the chickens were provided food either at fixed (FF) or alternated (AF) (alternated daily at 1945 h)location. Within the 12L group FF female chicks were heavier than their AF counterparts on Days 21 and 28. On Day 35 and thereafter regardless of treatment groups growth of female chicks was similar. Neither lighting regimen nor food position had significant effect on body weight of males throughout the duration of study. Regardless of daylength and food location the amount of food consumed (except from Day 14 to 20) feed conversion ratios and incidence of leg deformities were similar. Financial analysis showed a higher net profit for 12 L birds.

Full text available from: Official URL: https://www.mavma.org.my/1997-volume-9-issue-no-1-...

Abstract

The effects of daylength and food location on biological and economic performances were studied in broiler chickens. Commencing from 14 days of age equal number of chicks were provided either 12h of natural lighting (12L) only or 12 natural lighting and 12h supplementary lighting (24L). For each lighting regimen the chickens were provided food either at fixed (FF) or alternated (AF) (alternated daily at 1945 h)location. Within the 12L group FF female chicks were heavier than their AF counterparts on Days 21 and 28. On Day 35 and thereafter regardless of treatment groups growth of female chicks was similar. Neither lighting regimen nor food position had significant effect on body weight of males throughout the duration of study. Regardless of daylength and food location the amount of food consumed (except from Day 14 to 20) feed conversion ratios and incidence of leg deformities were similar. Financial analysis showed a higher net profit for 12 L birds.

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Item Type:	Article
AGROVOC Term:	Broiler chickens
AGROVOC Term:	Poultry
AGROVOC Term:	Animal breeding
AGROVOC Term:	Lighting
AGROVOC Term:	Feeding
AGROVOC Term:	Location factors
AGROVOC Term:	Feed intake
AGROVOC Term:	Feeding behaviour
AGROVOC Term:	Feed conversion efficiency
AGROVOC Term:	Body weight
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8851

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