Inclusion of exogenous enzymes in feedlot cattle diets: Impacts on physiology, rumen fermentation, digestibility and fatty acid profile in rumen and meat

Q1 Immunology and Microbiology Biotechnology Reports Pub Date : 2023-12-17 DOI:10.1016/j.btre.2023.e00824

Alexandre L. Simon , Priscila M. Copetti , Rafael V.P. Lago , Maksuel G. Vitt , Aline L. Nascimento , Luiz Eduardo Lobo e Silva , Roger Wagner , Bruna Klein , Camila Soares Martins , Gilberto V. Kozloski , Aleksandro S. Da Silva

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Abstract

The objective of this study was to evaluate if the inclusion of a blend composed of exogenous enzymes (amylase, protease, cellulase, xylanase and beta glucanase) in the individual and combined form in the feedlot steers diet has benefits on the physiology, rumen fermentation, digestibility and fatty acid profile in rumen and meat. The experiment used 24 animals, divided into 4 treatments, described as: T1-CON, T2-BLEND (0.5 g mixture of enzyme), T3-AMIL (0.5 g alpha-amylase), T4-BLEND+AMIL (0.5 g enzyme blend+ 0.5 g amylase). The concentration of mineral matter was higher in the meat of cattle of T4-BLEND+AMIL. A higher proportion of monounsaturated fatty acids was observed in the T3-AMIL group when compared to the others. The percentage of polyunsaturated fatty acids was higher in the T2-BLEND and T4-BLEND+AMIL compared to the T1-CON. The combination of exogenous enzymes in the diet positively modulate nutritional biomarkers, in addition to benefits in the lipid and oxidative profile meat.

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在饲养场牛日粮中添加外源酶：对生理、瘤胃发酵、消化率以及瘤胃和肉中脂肪酸组成的影响

本研究的目的是评估在饲养场阉牛日粮中单独或混合添加外源酶（淀粉酶、蛋白酶、纤维素酶、木聚糖酶和β葡聚糖酶）是否对瘤胃和肉中的生理机能、瘤胃发酵、消化率和脂肪酸组成有益。实验使用了 24 头动物，分为 4 个处理，分别为T1-CON、T2-BLEND（0.5 克混合酶）、T3-AMIL（0.5 克α-淀粉酶）、T4-BLEND+AMIL（0.5 克混合酶+0.5 克淀粉酶）。T4-BLEND+AMIL 牛肉中的矿物质含量更高。与其他组相比，T3-AMIL 组的单不饱和脂肪酸比例更高。与 T1-CON 相比，T2-BLEND 和 T4-BLEND+AMIL 组的多不饱和脂肪酸比例更高。在饮食中结合使用外源酶，除了对脂质和氧化肉类有好处外，还能积极调节营养生物标志物。

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来源期刊

Biotechnology Reports Immunology and Microbiology-Applied Microbiology and Biotechnology

CiteScore

15.80

自引率

0.00%

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审稿时长

55 days

期刊介绍： Biotechnology Reports covers all aspects of Biotechnology particularly those reports that are useful and informative and that will be of value to other researchers in related fields. Biotechnology Reports loves ground breaking science, but will also accept good science that can be of use to the biotechnology community. The journal maintains a high quality peer review where submissions are considered on the basis of scientific validity and technical quality. Acceptable paper types are research articles (short or full communications), methods, mini-reviews, and commentaries in the following areas: Healthcare and pharmaceutical biotechnology Agricultural and food biotechnology Environmental biotechnology Molecular biology, cell and tissue engineering and synthetic biology Industrial biotechnology, biofuels and bioenergy Nanobiotechnology Bioinformatics & systems biology New processes and products in biotechnology, bioprocess engineering.