Effects of lipid sources, lysophospholipids and organic acids in maize-based broiler diets on nutrient balance, liver concentration of fat-soluble vitamins, jejunal microbiota and performance

Autor(es)

Polycarpo, G. V. ; Burbarelli, M. F. C. ; Carao, A. C. P. ; Merseguel, C. E. B. ; Dadalt, J. C. ; Maganha, S. R. L. ; Sousa, R. L. M. ; Cruz-Polycarpo, V. C. ; Albuquerque, R.

• Tipo de documento: Artigo Científico
• Fonte: BRITISH POULTRY SCIENCE; v. 57, n. 6, p. 788-798, DEC 2016.
• Citações Web of Science: 4

Resumo

1. Three experiments with a 2x2x2 factorial arrangement were conducted to evaluate maize-based diets for broilers containing different lipid sources {[}soybean oil (S) or beef tallow (T)] supplemented with or without lysophospholipids and organic acids on nutrient balance (Experiment I, evaluation period of 10-14d), on liver concentration of fat-soluble vitamins, on jejunal microbiota (Experiment II, sampling at d 14) and on performance (Experiment III, accumulated periods of 1-14, 1-21 and 1-42d).A total of 1344 male chicks were used. In each experiment, the birds were allotted in a completely randomised design with 8 replications. The lysophospholipids were mainly composed of lysolecithins and the organic acids blend was constituted by lactic (40%), acetic (7%) and butyric acids (1%).An interaction between lipid sources and lysophospholipids was observed on faecal apparent digestibility of lipid (ADL), which improved with lysophospholipids addition in T diets. Broilers fed on S had higher ADL and faecal apparent digestibility of nitrogen-corrected gross energy (ADGE(N)).It was not possible to demonstrate a significant treatment effect on the liver concentration of vitamins A and E, even with the differences in fatty acid profile between S and T.Enterobacteria values were below the detection threshold. Lysophospholipid supplementation reduced gram-positive cocci in T-fed birds. S diets promoted lower total anaerobe counts compared with T diets, independent of additives.S diets increased BW gain and feed:gain ratio in all evaluation periods. Lysophospholipids and organic acids improved feed:gain ratio at 1-21d in T diets. Furthermore, main effects were observed for lysophospholipids and organic acids at 1-42d, which increased BW gain and improved feed:gain ratio, respectively.No positive interactions between additives were found. (AU)

• Processo FAPESP: 12/11370-0 - Dietas para frangos de corte contendo diferentes fontes lipídicas suplementadas ou não com lisofosfolipídios e ácidos orgânicos.
• Beneficiário: Gustavo Do Valle Polycarpo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/08536-4 - Dietas para frangos de corte contendo diferentes fontes lipídicas suplementadas ou não com lisofosfolipídios e ácidos orgânicos
• Beneficiário: Ricardo de Albuquerque
• Modalidade de apoio: Auxílio à Pesquisa - Regular