Supplementation of Novozyme SP-243 in the Diet of Layers Having Low Fibre Content

A feeding trial was conducted to evaluate the effects of adding a fiber degrading enzyme in layer diet on the egg production, live body weight and metaholizability of various nutrient. A control diet (D₁) having CP 21.84% and CF 5.60% was supplemented with NOVOZYME SP-243 at graded levels of I5g (D₂), 25g (D₃) and 35g/q (D₄) of feed. It was observed that the addition of NO VOZYME. SP-243 at any level did not reflect in any change in the proximate as well as filler composition of the diet. The number of eggs laid during 56 d were 45,49, 52 and 49, whereas the amount of feed required to produce 1 kg of egg mass was 2.67, 2.21, 2.37 and 2.39 kg and for producing 1 dozen of eggs was 1.86, 1.56, 1.65 and 1.63 kg. in groups D₁, D₂, D₃ and D₄, respectively. However, the differences were nonsignificant. It was evident that the use of NOVOZYME SP-243 @ 15g/q of feed was most economical. The metabolic studies revealed that the use of NOVOZYME SP-243 at any level did not alter the metabolizability coefficients of proximate principles except EE whereas the values for ADF and cellulose metabolizability were significantly higher in groups D₃ compared to that of control (D₁) group.