The effect of light intensity on growth and development of turkey toms

S. Yahav*, S. Hurwitz, I. Rozenboim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


1. The effect of light intensities from 10 to 700 lux on the performance of 5 to 18 week-old turkey males was studied in 2 trials. 2. Body weight of 18 week-old turkeys, in both experiments, was highest under the lowest light intensity. This coincided with higher weight gain and lower food intake, which resulted in significantly better food conversion efficiency. 3. Light intensity affected heart muscle weight but not weight of breast muscle, abdominal fat or testis as proportions of body weight. 4. The decline in plasma T3 concentration with age differed from other treatments at the low light intensity, which resulted in a significantly higher T3 concentration in turkeys exposed to 10 lux at the age of 10 to 15 weeks. 5. It is concluded that light intensity significantly affects food conversion efficiency in turkey males, this is likely to be related to differential investment of energy expenditure for maintenance.

Original languageAmerican English
Pages (from-to)101-106
Number of pages6
JournalBritish Poultry Science
Issue number1
StatePublished - 2000

Bibliographical note

Funding Information:
This study was supportdeby a grant from the Egg and PoryuBoarldtof Israel. We wish to thank M. Rusal and B. Gill for technical assistanc. e


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