Effect of age of growing turkeys on nutrient digestibility and energy value of cereal-soybean-based diets

Ileal and total tract digestibility of protein, total tract digestibility of fat and AME N of cereal-based diets were assayed in growing turkeys at four, seven and 12 weeks of age. Fat digestibility and AME N improved linearly with age. Total tract protein digestibility improved with age according t...

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Bibliographic Details
Published in:Archives of animal nutrition 2005-04, Vol.59 (2), p.139-147
Main Authors: Palander, Samu, Näsi, Matti, Valkonen, E
Format: Article
Language:English
Subjects:
age
Age Factors
Aging - physiology
Animal Feed
Animal Nutritional Physiological Phenomena
Animals
Dietary Fats - administration & dosage
Dietary Fats - metabolism
Dietary Proteins - administration & dosage
Dietary Proteins - metabolism
digestibility
Digestion
Edible Grain
Glycine max
Nutritive Value
Random Allocation
Turkeys
Turkeys - growth & development
Turkeys - metabolism
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Summary:Ileal and total tract digestibility of protein, total tract digestibility of fat and AME N of cereal-based diets were assayed in growing turkeys at four, seven and 12 weeks of age. Fat digestibility and AME N improved linearly with age. Total tract protein digestibility improved with age according to a curvilinear trend, while ileal protein digestibility improved from 4 - 7 weeks of age but decreased from 7 - 12 weeks of age. It can be concluded that higher AME N values could be applied when formulating diets for older than for younger turkeys. Regarding protein digestibility more investigation is needed but a possible fall in values after the first weeks of age may be expected.
ISSN:1745-039X
1477-2817
DOI:10.1080/17450390512331387945