Effect of Supplementation of L-Threonine on the Performance of Commercial Broilers
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Date
15-08-14
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Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar
Abstract
An experiment was conducted to study the growth performance and the
metabolizability of nutrients upon supplementation of L-Threonine in broiler diet. Four
hundred day old commercial broiler chicks were assigned randomly into four groups such
that each group had one hundred chicks with ten replicates of ten chicks in each replicate.
Growth trial for the period of 42 days followed by a metabolic trial during penultimate
three days of experiment was conducted. Broiler diet based on corn soybean with CP
concentration as per standard specification served as control (T1), while T2, T3 and T4
with CP reduced by 0.5, 1.0 and 1.5 units respectively served as experimental rations.
The experimental rations were supplemented with L-Threonine at 0.86% (pre starter),
0.80% (starter) and 0.77% (finisher) to maintain the concentration of the limiting amino
acid as par with that of control. The study indicated a significant difference in body
weight gain (P<0.05), feed intake (P<0.05), FCR (P<0.05) among the treatment groups.
The metabolizability of DM, OM, CP, CF and NFE remained non significant whereas,
metabolizability of EE was significantly (P<0.05) different among treatment groups.
There mortality was nil in all groups irrespective of the dietary regime allotted . Based
on the results it indicated that supplementation of L-Threonine in low protein diets had
positive effects on birds performance but was limited to the level of protein reduction.
From the study, it can be concluded that one can reduce CP content up to 1.0 unit in the
commercial broiler diet without compromising the birds performance.
Description
PG, Thesis
Keywords
Effect of Supplementation of L-Threonine on the Performance of Commercial Broilers