Abstract
This study was planned to evaluate the effect of distillery yeast sludge (DYS) as a protein source on growth performance, nutrient digestibility and slaughtering parameters in Japanese quail birds. For this purpose, six hundred day-old quails were randomly distributed into six dietary treatments. These dietary treatments were; G1 (Control Group) fed a basal diet (CP 24%, ME 2900 kcal/kg) without DYS, while other dietary treatments were G2, G3, G4, G5 and G6 fed basal diet containing DYS @ 1.5, 3.0, 4.5, 6.0 and 7.5%, respectively. It was observed that feed intake and weight gain tended to increase (P < 0.05) up to 3% DYS. Better (P < 0.05) feed conversion ratio (FCR) was observed in birds fed diet containing DYS at the level of 1.5 and 3%. Dry matter and crude protein digestibility decreased with increasing levels of DYS (P < 0.05). Cost of production per 100 g of weight gain was also less in birds fed diet containing 3% DYS. Study revealed that inclusion of distillery yeast sludge in the diet of Japanese quails up to 3% improves the growth performance and economics efficacy.
Highlights
Chicken is one of the major source of protein for human but efforts are being made for exploiting other suitable economical sources
There is not enough evidence about its use in Japanese quails, this research was planned to study the effect of distillery yeast sludge as a protein source on growth performance, nutrient digestibility, economics and slaughter parameters in Japanese quails
Weight gain was 13.61% higher (P < 0.05) in birds fed diet containing 3% Distillery yeast sludge (DYS) compared to birds fed diet containing 7.5% DYS (Table 2)
Summary
Chicken is one of the major source of protein for human but efforts are being made for exploiting other suitable economical sources. Yeast sludge (product of distillery industry) contains 27–29% crude protein[7] and can be used in poultry diet[8]. It contains some essential amino acids which are necessary for proper growth and health of birds[9]. Distillery yeast sludge (DYS) refers to surplus yeast at the bottom of fermentation tank in the form of sludge during the fermentation process of sugar and distillery industries It is named as spent yeast, yeast slurry and trub. In Pakistan, about 1,300 tons DYS is produced and wasted annually[11] It can be used in the diet of poultry. There is not enough evidence about its use in Japanese quails, this research was planned to study the effect of distillery yeast sludge as a protein source on growth performance, nutrient digestibility, economics and slaughter parameters in Japanese quails
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