ORIGINAL PAPER
Exogenous supplementation of carbohydrase lowers serum insulin and cholesterol and improves the nutritive value of full-fat rapeseed in chickens
D. Józefiak 1  
,   A. Ptak 2,   S. Kaczmarek 1,   P. Maćkowiak 3,   R. M. Engberg 4
 
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1
Poznań University of Life Sciences, Department of Animal Nutrition and Feed Management, Wołyńska 33, 60–637 Poznań, Poland
2
Poznań University of Life Sciences, Department of Animal Physiology and Biochemistry, Wołyńska 33, 60–637 Poznań, Poland
3
Piast Group Research and Development Center, Lewkowiec 50, 63-400 Ostrów Wlkp., Poland
4
Aarhus University, Faculty of Agricultural Sciences, Department of Animal Health and Bioscience, PO Box 50, DK-8830 Tjele, Denmark
CORRESPONDING AUTHOR
D. Józefiak   

Poznań University of Life Sciences, Department of Animal Nutrition and Feed Management, Wołyńska 33, 60–637 Poznań, Poland
Publication date: 2011-03-12
 
J. Anim. Feed Sci. 2011;20(1):107–117
 
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ABSTRACT
Two 42-d floor pen studies of identical design were conducted to evaluate the efficacy of enzyme supplementation of broiler diets containing full-fat double zero rapeseed. In both trials, 300 1-d-old Ross 308 males were allocated randomly to two dietary treatments with 15 replicates (10 birds per replicate). The birds received two isonutritive diets, pelleted at 78°C. Diets were either not supplemented or supplemented with a commercial enzyme blend providing xylanase and p-glucanase. In general, in both trials the supplementation of carbohydrase improved bird performance, however, only in the second experiment the overall body weight gain and feed conversion ratio were significantly improved. The enzyme addition reduced (P<0.05) the concentration of serum insulin (0.75 vs 0.49 ng/ml), total cholesterol (4.35 vs 3.03 mmol/1) and its fractions, whereas no effect on the concentration of blood glucose was observed. No significant effect of the enzymes on the ileal digestibility of nutrients or on apparent ileal metabohzable energy was found; however, total tract fat digestibility and AMEn value tended to be higher following enzyme supplementation. (78.2 vs 73.8% and 12.6 vs 12.4 MJ/kg). The results of the present study suggest that carbohydrases supplementation may improve the nutritive value of full-fat rapeseed in broiler chicken diets.
 
CITATIONS (1):
1.
A Solid-State Fermentation (SSF) supplement improved performance, digestive function and gut ultrastructure of rainbow trout (Oncorhynchus mykiss) fed plant protein diets containing yellow lupin meal
S.J. Davies, E.R. El-Haroun, Mohamed Hassaan, P.H. Bowyer
Aquaculture
 
ISSN:1230-1388