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Poultry Science, Vol 76, Issue 7, 1006-1013
Copyright © 1997 by Poultry Science Association

Articles

The response of broiler chickens and turkey poults to steam-pelleted diets supplemented with fat or carbohydrates

I Plavnik, E Wax, D Sklan, and S Hurwitz

Institute of Animal Science, Volcani Center, Bet Dagan, Israel.

The responses of growth and feed efficiency to pelleted feed was investigated in 4- to 7-wk-old broiler chickens, and in 8- to 12- and 16- to 20-wk-old turkeys. In all cases, the growth and feed efficiency responses were linear within the ranges of dietary energy tested. When energy was added by carbohydrate supplementation, weight gain and feed efficiency responses were parallel for both mash and pellets, but due to the growth response to pellets, the elevation was higher for pellets than for mash. When energy was added by fat, the growth response to pellets also resulted in an increase in function elevation but the slope of the response was lower than in mash feeding, possibly due to a decline in pellet quality as dietary fat increased. Grinding of pellets completely abolished the growth and feed efficiency responses observed when the physical form was preserved. In chickens, comparisons of ground pellets to mash suggested some decline in nutritional quality due to the process of pelleting when either carbohydrates or fat were increased in the diets. In both chickens and turkeys, the feeding of pelleted diets resulted in an increase in abdominal fat.


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Copyright © 1997 by the Poultry Science Association.