The energy value of biodiesel glycerine products fed to broilers at different ages

Summary The objective of this study was to determine the apparent metabolisable energy corrected for nitrogen balance (AMEn) of some products containing glycerine from soybean oil (GOIL), a mixture of frying oil and lard (GMIX) and a semi‐purified process (GSP) in broilers of different ages (10, 20,...

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Published in:Journal of animal physiology and animal nutrition 2013-10, Vol.97 (5), p.896-903
Main Authors: Lima, E. M. C., Rodrigues, P. B., Alvarenga, R. R., Bernardino, V. M. P., Makiyama, L., Lima, R. R., Cantarelli, V. S., Zangeronimo, M. G.
Format: Article
Language:English
Subjects:
Aging - physiology
Animal Feed - analysis
animal nutrition
Animal Nutritional Physiological Phenomena
Animals
biodiesel by-products
Biofuels
Chickens - metabolism
Diet
Diet - veterinary
Dietary Fats - analysis
glycerol
Glycerol - metabolism
Hogs
metabolisable energy
Oils & fats
poultry
Soybean Oil - analysis
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Summary:Summary The objective of this study was to determine the apparent metabolisable energy corrected for nitrogen balance (AMEn) of some products containing glycerine from soybean oil (GOIL), a mixture of frying oil and lard (GMIX) and a semi‐purified process (GSP) in broilers of different ages (10, 20, 30 and 40 days post‐hatching), using two methodologies. In trial 1, the basal diets were replaced with 100 g/kg of each studied glycerine product and the diets were supplied ad libitum. Three hundred broilers were used in five replicates, with five, four, three and three animals per cage in each age group, respectively. The AMEn was calculated for each experimental unit. In trial 2, dietary treatments included the addition of glycerine at 0, 40, 80 or 120 g/kg for each crude glycerine product, with 900 broilers in six replicates, using the same number of animals per cage as described in trial 1. Depending on the experimental unit, the feeding was restricted in 88%, 92%, 96% and 100% of estimated intake according to the Cobb guide. The AMEn was determined using linear regression between the feed intake and the AMEn of each diet. In both trials, the total excreta collection method was used. Because of the chemical composition, GMIX was not considered crude glycerine. The mean AMEn values of the products were 20.55 MJ/kg, 15.80 MJ/kg and 15.05 MJ/kg for GMIX, GSP and GOIL, respectively. There was a linear decrease (p 
ISSN:0931-2439
1439-0396
DOI:10.1111/j.1439-0396.2012.01335.x