Use of whole soy lecithin in diets with energy concentrate from starchy or lipid sources for steers

IF 0.4 4区农林科学 Q4 VETERINARY SCIENCES

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia Pub Date : 2023-10-01 DOI:10.1590/1678-4162-12891

M. Neumann, M.P. Machado, A.M. Souza, D.C. Plodoviski, A. Ostrensky, P.E.P. Oliveira, A. Passos Junior, P.V.P. Cesar, E.H. Horst

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Abstract

ABSTRACT Diets with high energy density and additives that enhance energy use are necessary for finishing feedlot cattle. The objective of the present study was to evaluate the performance, ingestive behavior, apparent digestibility of the diet and the carcass traits of feedlot steers fed concentrates from different energy sources, one derived from starchy sources and the other, from lipid sources, combined or not with whole soy lecithin, at a dose of 40 g animal day-1. The experimental design was completely randomized blocks, in a 2 x 2 factorial arrangement. The combination of whole soy lecithin with the lipid energy source concentrate increased the dry matter digestibility and the carcass yield of the animals (76.03% and 57.20%, respectively). The lipid energy source concentrate showed higher ether extract digestibility and animals fed on it had higher carcass yield (84.18% and 56.85%, respectively). Whole soy lecithin promoted a reduction in fecal pH due to a greater fermentation of carbohydrates and fatty acids in the intestinal lumen. Using whole soy lecithin combined with energy concentrate from a lipid source is recommended due to its improvements in the use of the diet and in the carcass yield.

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全大豆卵磷脂在饲粮中与淀粉或脂质来源的能量浓缩物的使用

高能量密度饲粮和提高能量利用的添加剂是育肥牛的必要条件。本试验旨在评价饲喂不同能量源精料(淀粉源精料和脂质精料)和不添加全大豆卵磷脂(40 g)的育成阉牛的生产性能、摄食行为、饲粮表观消化率和胴体性状。实验设计完全随机分组，采用2 × 2阶乘排列。全大豆卵磷脂与脂质能量精料组合可提高动物干物质消化率和胴体产量(分别为76.03%和57.20%)。脂质能量源精料具有较高的粗脂肪消化率和较高的胴体产量(分别为84.18%和56.85%)。由于肠道内碳水化合物和脂肪酸的发酵，全大豆卵磷脂促进了粪便pH值的降低。建议使用全大豆卵磷脂与脂质来源的能量浓缩物相结合，因为它可以提高日粮的利用率和胴体产量。

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来源期刊

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia 农林科学-兽医学

CiteScore

0.80

自引率

25.00%

发文量

111

审稿时长

9-18 weeks

期刊介绍： Publica artigos originais de pesquisa sobre temas de medicina veterinária, zootecnia, tecnologia e inspeção de produtos de origem animal e áreas afins relacionadas com a produção animal. Atualmente a revista mantém 628 permutas (419 internacionais e 209 nacionais), sendo um verdadeiro suporte para o recebimento de periódicos pela Biblioteca da Escola. A partir de 1999, a Escola de Veterinária delegou à FEP MVZ Editora o encargo do gerenciamento e edição de todas suas publicações, inclusive do Arquivo, ficando somente com o apoio logístico (instalações, equipamentos, pessoal etc.). O apoio financeiro é exercido pelo CNPq/FINEP e pela própria FEP MVZ.