Evaluation of dietary lignin on broiler performance, nutrient digestibility, cholesterol and triglycerides concentrations, gut morphometry, and lipid oxidation.

Autor:	Leite BGS; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Granghelli CA; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil. Electronic address: carlosgranghelli@usp.br., Roque FA; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Carvalho RSB; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Lopes MHS; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Pelissari PH; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Dias MT; School of Veterinary Medicine and Animal Science, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Araújo CSDS; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil; School of Veterinary Medicine and Animal Science, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil., Araújo LF; School of Animal Science and Food Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, 13635-900, Brazil.
Jazyk:	angličtina
Zdroj:	Poultry science [Poult Sci] 2024 Apr; Vol. 103 (4), pp. 103518. Date of Electronic Publication: 2024 Feb 01.
DOI:	10.1016/j.psj.2024.103518
Abstrakt:	Two trials were performed in order to evaluate the effects of dietary Kraft lignin inclusion on broiler performance, ileal nutrient digestibility, blood lipid profile, intestinal morphometry, and lipid oxidation of meat. Trial 1 was conducted in order to evaluate performance and ileal digestibility for the period of 1 to 21 d of age, randomly distributing 490 day-old broiler chicks across 5 dietary treatments with 14 replicates containing 7 birds each in metabolic cages, while trial 2 was executed in order to evaluate performance, blood parameters, intestinal morphometry, carcass yield and abdominal fat, and lipid oxidation for the period of 1 to 42 d of age, randomly distributing 900 day-old broiler chicks across 5 dietary treatments with 15 replicates of 12 birds each in floor pens, being each bird in trial 2 challenged with coccidiosis vaccine at 10 d of age. The treatments used in both trials were: positive control (PC): basal diet + antimicrobial; negative control (NC): Basal diet; NC1: NC + 1% lignin; NC2: NC + 2% lignin; NC3: NC + 3% lignin. For trial 1, it was observed that birds fed diets containing 1% lignin had a significant positive effect for BW, feed intake (FI), average daily weight gain (BWG) and feed conversion rate (FCR), similar to the PC, but also showing better EE, CP and AAs ileal digestibility percentages when compared to other treatments. For trial 2, it was observed that during the period of 21 to 35 d, the inclusion of lignin in the diet provided better results in animal performance, similar to the PC group, but at 42 d, animals fed with dietary lignin showed results lower than animals fed the PC diet (P < 0.05). Animals fed with increasing lignin concentrations showed decreasing levels of HDL (P < 0.05). As of intestinal morphometry, animals fed with 1% and 3% lignin showed longer intestinal length (P < 0.05). At 14 d of age, it was observed that animals fed with lignin showed oxidation levels similar to the control treatments. The inclusion of up to 1% lignin in the diet provides beneficial effects on productive performance and nutrient digestibility, while the inclusion of 2% lignin provided lower cholesterol levels, lower villus/crypt ratio, and better internal organ development, therefore, it can be considered an alternative to performance-enhancing antimicrobials in broiler chicken diets. (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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