EFFECT OF DIETARY INCLUSION OF SUN DRIED AZOLLA (Azolla pinnata) WITH OR WITHOUT ENZYME SUPPLEMENTATION ON PRODUCTION PERFORMANCE OF JAPANESE QUAIL
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Date
2013-10
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SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI – 517 502. (A.P) INDIA
Abstract
ABSTRACT:
The present investigation was carried out to study the effect of inclusion of sun dried azolla (Azolla pinnata) with or without enzyme supplementation on the growth performance, carcass characteristics, serum biochemical profile and nutrient utilization of Japanese quails. One hundred and eighty, day old Japanese quail chicks distributed randomly to six dietary groups each with three replicates of ten quails were offered a basal diet containing 24% CP and 2800 kcal/kg ME. Sun dried azolla (SDA) was included in the basal diet at 0, 5 and 10% level without (T1, T3 and T5) and with (T2, T4 and T6) enzyme supplementation. All the rations were made iso-caloric and iso- nitrogenous. The SDA contained 23.2% CP (on DMB), and 12.62% CF. Results indicated that the body weight gain and feed efficiency decreased (P<0.05) while feed intake increased (P<0.05) with increased level of SDA from 0 to 10% in the diet. Inclusion of SDA with or without enzyme supplementation in the diet of quails has no affect on serum total protein, albumin and globulin content. The serum glucose and serum total cholesterol levels decreased (P<0.05) while the serum triglyceride levels increased (P<0.05) with increased levels of SDA inclusion in the diet from 0 to 10%. Further, enzyme supplementation has increased (P<0.05) the serum triglyceride concentration in birds compared to those fed without enzyme. The HDL and LDL cholesterol values decreased (P<0.05) while VLDL cholesterol values increased (P<0.05) with increased level of inclusion of SDA from 0 to 10 % in the diet. Enzyme supplementation has no affect on the concentration of HDL cholesterol while it increased (P<0.05) the level of LDL and VLDL cholesterol in serum. Inclusion of azolla at different levels in the diet of quails with or without enzyme supplementation had no affect on serum calcium and phosphorous content. The digestibility of CP, CF, NFE, NDF, ADF, hemi-cellulose and cellulose decreased (P<0.05) with increased level of SDA inclusion from 0 to 10% in the diet. Enzyme supplementation in the diet has no effect on the digestibility of proximate constituents and cell wall constituents. The per cent nitrogen utilization decreased (P<0.05) with increase of SDA inclusion in the diet from 0 to 10% while there was no affect on calcium and phosphorous utilization.
Inclusion of azolla with and without enzyme supplementation in quail diets has no effect on carcass yield (g), ready to cook yield (g) and on per cent weight of heart, liver, gizzard and giblet. The feed cost /kg gain was reduced by 2.23 and 3.78 in birds fed on diets containing 5 and 10% SDA than diets without SDA inclusion. However, enzyme supplementation has not affected the feed cost /kg gain. The present study indicated that SDA can be included up to 5 % level in quail diets as an unconventional feed supplement to reduce cost of production without any effect on production performance.
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