Growth performance and carcase quality in broiler chickens fed on bacterial protein grown on natural gas

1. The effects of increasing concentrations (0, 40, 80 or 120 g/kg) of bacterial protein meal (BPM) and bacterial protein autolysate (BPA) grown on natural gas on growth performance and carcase quality in broiler chickens were examined. 2. Adding BPM to diets reduced feed intake and improved gain: f...

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Bibliographic Details
Published in:British poultry science 2010-10, Vol.51 (5), p.686-695
Main Authors: Overland, M, Schoyen, H.F, Skrede, A
Format: Article
Language:English
Subjects:
Amino acids
Animals
Bacteria
Bacterial Proteins - metabolism
Bacterial Proteins - pharmacology
Body Composition - drug effects
Body Weight - drug effects
Brevibacillus - metabolism
Cell walls
Chickens - anatomy & histology
Chickens - growth & development
Chickens - metabolism
Dietary Proteins - metabolism
Dietary Proteins - pharmacology
Diets
Dressings
Dry matter
Energy
Feeding Behavior - drug effects
Fossil Fuels
Growth rate
Litter
Methylococcus capsulatus - metabolism
Nutritive Value
Poultry
Ralstonia - metabolism
Soybeans
Viscosity
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Summary:1. The effects of increasing concentrations (0, 40, 80 or 120 g/kg) of bacterial protein meal (BPM) and bacterial protein autolysate (BPA) grown on natural gas on growth performance and carcase quality in broiler chickens were examined. 2. Adding BPM to diets reduced feed intake and improved gain: feed from 0 to 21 d and overall to 35 d, but did not significantly affect weight gain compared to the soybean meal based control diet. 3. Increasing concentrations of BPA significantly reduced growth rate, feed intake, gain: feed, carcase weight and dressing percentage, but significantly increased carcase dry matter, fat and energy content. 4. Adding BPM to diets had no effect on viscosity of diets and jejunal digesta, and minor effects on litter quality, whereas BPA increased the viscosity of diets and jejunal digesta, improved litter quality at 21 d, but decreased litter quality at 32 d. 5. To conclude, broiler chickens performed better on a BPM product with intact proteins than on an autolysate with ruptured cell walls and a high content of free amino acids and low molecular-weight peptides.
ISSN:0007-1668
1466-1799
DOI:10.1080/00071668.2010.522556