Effect of high threonine diets on growth performances of commercial broilers

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Research Paper 01/03/2017
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Effect of high threonine diets on growth performances of commercial broilers

Anjan Majumder, Sachchidananda Das Chowdhury, S. M. Zakir Hossain, Farukul Islam
Int. J. Agron. Agri. Res.10( 3), 1-8, March 2017.
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A total of 720 Cobb 500 day old chicks with an average hatching weight 44.35 g each were divided into five dietary treatments groups (diet group 1, 2, 3, 4 and 5 with the doses of threonine like, 0 g/kg, 0.5g/kg, 1g/kg, 1.5g/kg and 2g/kg feed, respectively). Each of 144 birds under each treatment were replicated to eight subgroups of 18 birds each to investigate the productivity and cost effectiveness of commercial broilers fed increasing levels of threonine supplemented diets. The birds were reared in an open-sided shed up to the age of 35 days at Bangladesh Agricultural University Poultry Farm, Mymensingh, Bangladesh. Apart from differences in diets, care and management for all treatments groups were similar. Data were collected on body weight, feed intake, livability, average daily weight gain (ADG), feed conversion ratio (FCR), carcass traits and income over cost of production were calculated out. The highest live weight (1978.09±0.40 g/bird) at 35 days and the highest dressing yield ( 1314.63±1.48 g/bird) at 30 days were documented for the diet group five. The best amount of threonine for live body weight gain, FCR, ADG of broiler bird was 2.0 g/kg feed and it was followed by 1.0 g/kg feed, 1.5 g/kg feed and 0.5 g/kg feed. Very interestingly, the best amount of threonine for dressing yield per bird and breast weight of broiler bird was 2.0 g/kg feed and similarly the best economic dose of threonine for commercial broiler production was 2 g/kg feed.


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