Year: 2017 | Month: April | Volume 7 | Issue 2
Effect of Dietary Addition of Amla (Emblica officinalis) on Performance and HSP70 Gene Expression in Coloured Broiler Chicken during Extreme Summer
Abstract:
This study was designed to access performance of coloured broiler chickens (n= 112) fed diets with or without addition of Amla fruit powder during extreme summer (May-June, 38°C to 43°C). There were four dietary treatments with 0, 0.1, 0.2 and 0.3% Amla fruit dried powder respectively in broiler starting (0-3 wk) and finishing (3-6 wk) diets. Feed intake was lower (P<0.001) in broilers fed diets containing Amla fruit powder at any level in comparison to control. FCR during all phases improved (P<0.001) in treatment group compared to control and other dietary treatments. The feather loss, giblet, liver, gizzard, eviscerated yield and dressed yield differed significantly among various treatments. The yields of breast (P<0.01) and drum stick (P<0.001) increased at 0.1% or 0.2% level with reduction of cut of part-back yield (P<0.001). Cell-mediated immune response (CMI) improved (P<0.01) on addition of Emblica fruit powder. Lower levels of reduced glutathione (P<0.01) was estimated in treatment group and the values were lowest at 0.1% level. The m-RNA expression of HSP-70 in liver and bursa remain comparable while in spleen it was significantly down-regulated (P<0.001) on dietary addition of amla at 0.3% level (in comparison to control group) by a mean factor of 0.506. Use of Amla fruit powder 0.2% in diets was beneficial to improve FCR, CMI response while 0.3% was beneficial to improve HSP-70 expression during extreme summer.
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