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- Title
EFFECTS OF CHROMIUM DIETARY SUPPLEMENTATION ON PERFORMANCE AN D PHYSIOLOGICAL RESPONSE OF BROILER CHICKENS.
- Authors
Ismaly, Z. S. H.
- Abstract
The current experiment was conducted to determine the effect of chromium levels on growth performance and biochemical parameters of broiler chickens. One hundred and fifty - one day old unsexed broiler chicks (Cobb) were divided into five groups of 30 birds each with 10 birds per replicate. Treatments were control group, 0.00, 0.01, 0.02, 0.03 and 0.04 % chromium in the diet respectively. Feed intake, live body weights were weekly recorded; weight gain and feed conversion ratio (FCR) were calculated. The experiment was lasted for 6 weeks. Six birds from each treatment were randomly selected and weighed for determining carcass dressing percentage. The results of the present studies indicated that, till three weeks of age, productive performance showed not adversely effect of chromium gradually supplementation. In general, after 21 days of treatments the lowest level of chromium (0.01 % Cr) improves BW, BWG, FI and FRC compared with control group. Overall, birds feed on the highest levels Cr had the worst productive performance. There were no significant differences between among all treatments in dressed carcass, abdominal fat, liver and heart %. Contrary, Birds feed on (0.01 % Cr) group had the highest spleen, gizzard and proventriculus % comparing with other groups. Additionally, there were a significant increase (P<0.01) in serum total protein, albumin and globulin concentration of birds received the lowest Cr levels (0.01 and 0.02 % Cr) compared to other treatments. These results indicate that productive and physiological performance of broiler chicks was not adversely affected by treatment with Cr at low levels.
- Subjects
FEED utilization efficiency of poultry; CHROMIUM in animal nutrition; BROILER chickens; THYROXINE; ANIMAL carcasses; PHYSIOLOGY
- Publication
Egyptian Poultry Science Journal, 2016, Vol 36, Issue 4, p1183
- ISSN
2090-0570
- Publication type
Article