Effect of Supplementing Xylanase, Manase and Proteases Combination in Corn Based Diets onGrowth Performances, Carcass Characteristics and Nutrient Digestibility Broiler Chicken
DOI:
https://doi.org/10.71395/ijhp.1.4.2024.14-18Abstract
Background and Objectives: The study aimed to assess the effects of supplementing a combination of xylanase, mannanase, and proteases in corn-based diets on the growth performance, carcass characteristics, and nutrient digestibility of broiler chickens. These enzymes were supplemented at different levels of nutrient density during the starter and finisher phases of broiler growth. The objective was to determine whether supplementing a combination of xylanase, mannanase, and proteases would improve growth performance, carcass traits, and nutrient digestibility in broiler chickens.
METHODOLOGY: Six diets were formulated with three nutrient density levels (high density [HD], medium density [MD], and low density [LD]) and two enzyme supplementation levels using Winzyme MXP® (0.01%) containing xylanase, mannanase, and proteases. Diets were fed during the starter phase (days 1–21) and finisher phase (days 22–35) to five replicates of 10 birds each. Parameters measured included feed intake, weight gain,
feed conversion ratio, carcass characteristics, organ weights, and nutrient digestibility.
RESULTS: Feed intake was similar across all diets (P>0.05). Weight gain was unaffected during the starter phase (P>0.05) but was higher in the finisher phase for the high-density diet (HD) and enzyme-supplemented diets (P<0.05). Feed conversion ratio (FCR) improved during the finisher phase and overall in HD and enzyme-supplemented diets (P<0.05). Carcass and organ weights showed no significant differences except for the highest gizzard weight and abdominal fat percentage in the medium-density diet (MD) (P<0.05).Crude protein digestibility was highest in the HD diet (P<0.05), while crude fat digestibility was highest in diets without enzymes (P<0.05). An interaction effect was observed for crude protein digestibility (P<0.05), but not for crude fat digestibility (P>0.05).
CONCLUSION: Enzyme supplementation positively influenced growth performance, particularly during the finisher phase of the study. However, the interaction between diet density and enzyme supplementation did not significantly affect the overall growth performance or other measured parameters.
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