Year: 2018 | Month: June | Volume 8 | Issue 3
Effect of Beta-Xylanase and Cysteine Protease Enzymes in Diets on Performance of Kadaknath Birds
Abstract:
India is home to nineteen breeds of indigenous fowl including one well-known native breed “Kadaknath” or “Kalamasi” meaning a fowl having black flesh. Although the Kadaknath breed has many unique characteristics, it has been neglected because of its poor production potential. In recent trends, the higher use of single activity enzymes like xylanase and protease in commercial poultry feed for improving their performance can also improve performance in Kadaknath breed. Efforts for attaining higher body weight in short duration is still a subject of research for this breed. An experiment of three months was conducted with total Two hundred Kadaknath chicks which were randomly divided into four equal groups with five replicates and each replicate consisted of 10 chicks. Experimental control diet (T0) for pre starter, starter and finisher birds consisted of maize, soybean meal and feed additives based on BIS (2007) for broilers. Treatment diet one (T1) was supplemented with 0.1 kg/ton beta-xylanase enzyme (min. 16000 bxu/kg) with reducing dietary ME 100 Kcal/kg and 1.75% CP, treatment diet two (T2) was supplemented with 0.25 kg/ton cysteine protease enzyme (min. 32500 pu/kg) with reducing dietary ME 50 Kcal/kg and 4% CP and Treatment diet three (T3) was supplemented with both xylanase and protease on same dose in T2 and T3 respectively with reducing dietary ME 150 Kcal/kg and 5.75% CP. The average body weight gain and average feed intake were recorded fortnightly. A metabolic trial was conducted during 6th fortnight of growth period. The average body weight, feed consumption and FCR were not significantly (P>0.05) different among all treatments. Crude protein digestibility was observed significantly (P>0.05) higher in protease supplemented group where as dry matter and crude fibre digestibility were observed significantly (P>0.05) higher in T1. In the above study, it was concluded that the growth performance was similar in xylanase, protease and combination of both supplemented group with reducing energy and protein in comparison to control group. Combination of xylanase and protease was more profitable in rearing of Kadaknath birds.
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