THE EFFICIENCY OF PROTEIN UTILIZATION IN DIFFERENT BROILER STRAINS
Abstract: The objective of
this work was to study the protein utilization and protein turnover of
different broilerstrains and was carried out in completely randomized design.
One hundred and forty four sexed doc fromeach strain (Cobb =A, Ingham = B and
Steggels = C) were divided into a factorial arrangement (threedietary protein,
two sexes and three strains). Two regimens of composite mixes of a summit and
dilution dietand a free choice between these two diets. Diets were changed
weekly, with notional crude protein levelsat one day-old of 240g/kg for all
chickens, and at 42 days of age of 120 or 180 g/kg in the low and highprotein.
Protein utilization efficiency (PRE) was measured from 39-42 d of age. PRE
increased with theincreasing of dietary protein in strains A and C and had much
higher response than in strain B. The moisture:protein ratios were 2.51, 2.65
and 2.58 in strains A, B and C, indicating strain B contained higher
moistureand body fat and less protein. Involvement of genetic controls as the
selection effect seems to increase thecapacity of chickens in improving
nutrient utilization
Author: B. Indarsih, R.A.E.
Pym
Journal Code: jppeternakangg090022
