Amino acid and protein metabolism in genetically lean and fat lines of chickens

Autor:	C.L. Saunderson
Rok vydání:	1988
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Dietary protein Lower body Biochemistry chemistry Anabolism Catabolism Protein metabolism Broiler Genetic selection Biology Amino acid
DOI:	10.1016/b978-0-408-01036-8.50035-x
Popis:	Publisher Summary This chapter discusses amino acid and protein metabolism in genetically lean and fat lines of chickens. Various selection strategies can be effectively applied to produce broiler chickens with lower body fat contents. These leaner broilers not only show an increase in body protein content but also have a greater efficiency of protein utilization. Conversely, the fatter broilers produced by such selections show an increased diversion of energy from dietary protein into lipid. One further difference that may exist between fat line and lean line broilers is in the uptake and distribution of amino acids among tissues and among different pools within tissues. Dietary amino acids must first pass through the hepatic portal system to the liver. If there are differences in uptake into this tissue between the different strains, then distribution of amino acids into catabolic and anabolic pathways could be different. The genetic selection methods applied in the production of broilers that are leaner would generally tend to cause changes at a number of metabolic sites rather than at one genetic locus.
Databáze:	OpenAIRE
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