Effet Du Genotype, Du Sexe, De L'age Et Du Mode D'elevage Sur La

Content Provider	Semantic Scholar
Author	Michel, Lessire Marcl, Hallouis Jean Hervé, Juin Philippe, R. Germain Karine
Copyright Year	2012
Abstract	Effect of genotype, sex, age and growing conditions on digestibility values of organic diets. This work was realized within the framework of the project AlterAviBio which was financed by the program « Pour et Sur le Developpement Regional » of "Grand Ouest". The objective of the work is to determine the digestibility of organic poultry diets on slow growing chickens. It joins within the framework of the program AlterAviBio described besides (Germain et al, 2010). Three poultry diets were tested: a starter, a grower and a finisher. They were certified organic and were formulated on the basis of values (metabolisable and digestibility values) tabulated, ie obtained from conventional animals. The digestibilities of those diets were determined on birds of the same commercial cross and delivery than those used in the program Alteravibio (JA657), but also on roosters and fast growth chicken (ROSS PM3) to validate the values of formulation. The Alteravibio program involving male chickens and females, digestibilities were also measured on chickens of both sexes. Trials were done on animals placed in individual cages and realized at the ages of 3, 5 and 11 weeks for starter, grower and finisher diets respectively, exception made for ROSS whose age of slaughter is earlier. For slow growth birds, digestibility trials were done either on chicken raised in poultry house in confinement from hatching as the Ross, or on animals having had free access to outdoor run from 28 day old. Generally speaking, the metabolizable energies (EMAn) measured on roosters were superior to those observed on chicken, while the digestibility of the nitrogenous fraction varied according to the age of the birds. Effect of commercial cross was significant, higher digestibility values obtained on slow growing birds being highet than those obtained on fast growing ones. Effects of sex and acces to outdoor run were non significant. Neuviemes Journees de la Recherche Avicole, Tours, 29 et 30 mars 2011
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Alternate Webpage(s)	https://www.cabi.org/Uploads/animal-science/worlds-poultry-science-association/WPSA-france-2011/069.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article