Analysing the Digestive Function of the Broiler Exposed to Heat Stress Both Pre-Hatch and Post-Hatch with or without Protein Synthesis Modulator
Sudhir Kumar Jaiswal Jagbir Singh Tyagi Gautham Kolluri Gopi Marappan Leena Dilliwar Ajay Chaturvedani
Vol 7(2), 41-47
A total of four hundred hatching eggs of broiler chicken were subjected to elevated incubation temperature for 12 hours per day during 7th to 16th day of incubation and after hatch chicks were reared up to five weeks of age. On 36th day, 192 birds were divided into 6 groups (32 birds in each group) - 2 groups were treated with normal saline as control, 2 groups with glutamine @ 0.75 mg/Kg body weight as enhancer and 2 groups with quercetin @ 5 mg/kg body weight as inhibitor. After 24 hours of treatment , one set of all three treatment groups being exposed to acute heat stress (40±1°C; 55% RH) for different duration of 0, 2, 5 and 10 hours in psychometric chamber and another set of all three treatment groups being unexposed to heat stress. The result indicated that concentrations of lipase, amylase, pepsin and trypsin were significantly (P<0.05) higher in enhancer group. Exposure of heat stress both pre and post hatch, significantly (P<0.05) increased the activity of trypsin and pepsin in jejunum and simultaneously decreased the amylase activity; however the lipase activity did not show any change in response to acute heat stress exposure. A significant difference observed (P<0.05) on enzymatic activity of pepsin and trypsin and the activity of amylase and lipase was not significant under different duration of heat stress exposure.
Keywords : Protein Synthesis Modulator Digestive Enzymes Acute Heat Stress
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