Apparent metabolizable energy of by-products from the soybean oil industry for broilers: acidulated soapstock, glycerin, lecithin, and their mixture

The objective of this study was to determine the chemical composition and apparent metabolizable energy (AME), AME corrected for nitrogen balance (AMEn) and its respective metabolizable coefficients of animal byproducts for broiler chickens with different ages. Meat and bone meal, poultry by-product meal, tilapia processing residue and poultry fat were evaluated. A total of 760 male broiler chickens were used and evaluated and the phases: pre-starter (1 to 8 d of age); starter (11 to18 d); grower 1 (21 to 28 d); grower 2 (31 to 38 d), and finisher (41 to 48 d). Total excreta collection method was performed in five metabolism assays. The experimental design was completely randomized, and data were submitted to analysis of variance, posteriorly, the four feeds were compared by Tukey test and a regression analysis was performed with broiler chickens age. The significance was considered at 5% probability. The values of AME and AMEn were higher in older birds for all ingredients. The lesser CAME and CAMEn were obtained for meat and bone meal, for the regression analysis poultry by-product meal, tilapia processing residue and poultry fat had an increased linear effect with birds age and there was no adjust for meat and bone meal for regression analysis.

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Apparent metabolizable energy values of n-6 and n-3 rich lipid sources for laying hens

Canadian Journal of Animal Science ◽

10.1139/cjas-2017-0195 ◽

2019 ◽

Vol 99 (1) ◽

pp. 1-6

Author(s):

Robert Guaracy Aparecido Cardoso Araujo ◽

Gustavo do Valle Polycarpo ◽

Antonio Carlos Laurentiz ◽

Victor Hugo Alderenike Amaral ◽

Polyana Vellone Giacomini ◽

...

Keyword(s):

Fish Oil ◽

Soybean Oil ◽

Sunflower Oil ◽

Laying Hens ◽

Linseed Oil ◽

Basal Diet ◽

Metabolizable Energy ◽

Experimental Unit ◽

Natural Material ◽

Apparent Metabolizable Energy

The objective of this research was to evaluate the nitrogen-corrected apparent metabolizable energy (AMEn) balance of the following lipid sources: soybean oil, sunflower oil, linseed oil, and fish oil. Two hundred eighty 24-wk-old laying hens of the Hysex White were used. The experimental diets consisted of a basal diet (reference group), basal diet + 10% soybean oil addition (group 1), basal diet + 10% sunflower oil addition (group 2), basal diet + 10% linseed oil addition (group 3), and basal diet + 10% fish oil addition (group 4), distributed in a completely randomized design with seven replicates and eight birds per experimental unit. The metabolic assay was performed by the total excreta collection method. The AMEn values found in the natural material were 9 334 kcal kg−1 for soybean oil, 10 533 kcal kg−1 for sunflower oil, 10 928 kcal kg−1 for linseed oil, and 9 005 kcal kg−1 for fish oil. The AMEn were different among the lipid sources. Sunflower oil and linseed oil had higher AMEn compared with soybean oil and fish oil (P < 0.05). The AMEn of the lipid sources of plant origin had higher values than the gross energy. The fatty acid profile of each lipid source was presented in this work. Thus, it is important to have individual nutritional information for each type of oil for laying hens, making it possible to formulate more appropriate and accurate feed.

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