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  • Sociedad Chilena de Anatomía
  • International Journal of Morphology
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  • Sociedad Chilena de Anatomía
  • International Journal of Morphology
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BONE DEVELOPMENT OF BROILER CHICKENS FED DIETS WITH DIFFERENT AMINO ACID AND CALCIUM LEVELS DURING THE STARTER PHASE

Author
Soares da Silva Araújo,Cristiane

Martinez Baraldi Artoni,Silvana

Francelino Araújo,Lúcio

Jeferson Quirino Lousada,Mário

Mack Junqueira,Otto

Roque Rodriguez,Anita Isabel

Full text
https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200001
Abstract
Two experiments were conducted in order to evaluate the effects of different dietary amino acid and calcium profiles on the bone characteristics of two chicken strains (Avian Farms and Cobb) during the starter phase. At the end of each experiment, 2 chickens of each replicate were sacrificed and their tibiae were collected for analysis of following bone characteristics: bone measurements (weight, length and thickness of the compact and spongy layers) and bone density (bone densitometry). A total of 540 birds were used in each experiment, divided into fully randomized blocks with a 3 x 2 factorial schemes, i. e., 3 amino acid profiles (methionine, lysine and threonine ­ 100%, 125% and 150% of NRC recommendations, 1994) and 2 calcium levels (75% and 100% of NRC recommendations, 1994), with 30 birds per replicate. Birds of the Cobb strains fed 75% of the recommended calcium allowance showed lower bone density. Calcium level significantly affected the weight and thickness of the spongy layer of the tibia. In birds of the Avian strain, bone density and measurements were not affected by any of the experimental treatments
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Artes, Arquitectura y UrbanismoCiencias Agrarias, Forestales y VeterinariasCiencias Exactas y NaturalesCiencias SocialesDerechoEconomía y AdministraciónFilosofía y HumanidadesIngenieríaMedicinaMultidisciplinarias
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Universidad de ChileUniversidad Católica de ChileUniversidad de Santiago de ChileUniversidad de ConcepciónUniversidad Austral de ChileUniversidad Católica de ValparaísoUniversidad del Bio BioUniversidad de ValparaísoUniversidad Católica del Nortemore

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