Nutritional Evaluation of Distillery Sludge and Its Effect as a Substitute of Canola Meal on Performance of Broiler Chickens

  • Sharif, M. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
  • Shahzad, M.A. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
  • Rehman, S. (Department of Poultry Science, University of Agriculture) ;
  • Khan, S. (Govt Islamia College) ;
  • Ali, R. (Director Remount Veterinary and Farms GHQ Rawalpindi) ;
  • Khan, M.L. (Institute of Animal Nutrition and Feed Technology, University of Agriculture) ;
  • Khan, K. (Institute of Animal Nutrition and Feed Technology, University of Agriculture)
  • Received : 2011.08.12
  • Accepted : 2011.11.07
  • Published : 2012.03.01


The study was conducted to investigate the chemical composition of distillery yeast sludge and its inclusion in broiler diets to replace canola meal. Raw distillery yeast sludge was washed with water using water and sludge in the ratio 6:1, respectively. Proximate analysis of raw distillery yeast sludge and washed distillery sludge was carried out for crude protein (CP), true protein (TP), ether extract (EE), ash, acid insoluble ash and nitrogen free extract (NFE) determination. Mineral contents and amino acid profile of raw distillery yeast sludge and washed distillery sludge were also determined. After chemical evaluation, four iso-caloric and iso-nitrogenous broiler starter and finisher diets were prepared in mash form using 0 (control), 4, 8 and 12% levels of washed distillery sludge replacing canola meal. One hundred and twenty day-old broiler chicks were randomly distributed into 12 experimental units in such a way that each diet was offered to three experimental units, each comprising of 10 chicks. It was observed that washing affected the nutrients either by decreasing or increasing their concentration. It decreased the total mineral contents whereas CP, TP, EE and NFE contents increased. Washing also increased amino acid profile. Average feed intake and weight gain were higher in birds fed diet containing 8% washed distillery sludge and lower in birds fed diet containing 0% washed distillery sludge. Feed cost per kg live weight gain decreased significantly as the level of washed distillery sludge was increased in the diet. Average heart, liver and pancreas weights decreased with increased level of washed distillery sludge in the diet. The study revealed that after washing, distillery yeast sludge can be used successfully in broiler diets up to the level of 8% without any adverse effect on broiler's performance.


Sludge;Washing;Evaluation;Performance;Dressing Percentage;Broiler


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