Exogenous amylase increases gas production and improves in vitro ruminal digestion kinetics of sorghum and corn grains

IF 0.4 4区农林科学 Q4 VETERINARY SCIENCES

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia Pub Date : 2023-06-01 DOI:10.1590/1678-4162-12803

A.S. Silva, L. Pereira, M. Pedreira, F. S. Machado, M. M. Campos, C. Cortinhas, T. Acedo, R. D. Santos, J. Rodrigues, R. M. Maurício, T. R. Tomich

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引用次数: 1

Abstract

ABSTRACT The aim of this study was to evaluate the effect of exogenous amylase on gas production, in vitro dry matter digestibility (IVDMD), and in vitro digestion kinetics of sorghum (Sorghum vulgaris) and two corn hybrids of different grain textures. Ruminal fluid was collected from two rumen-fistulated cows receiving or not exogenous amylase (0.7g kg-1 of dry matter (DM basis)), provided to achieve 396 kilo Novo units kg-1 for amylase activity (DM basis). Gas production was measured after 1, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42 e 48 hours of incubation. Amylase increased gas production (mL) by 5.4%. Corn hybrids have higher in vitro dry matter digestibility than sorghum. Exogenous amylase increased the potential of gas production (A) (P=0.01). There was an effect of hybrid for IVDMD (P<0.01). The addition of exogenous amylase increases the in vitro gas production, improves fermentation kinetics, and increases the production of the ammonia nitrogen of corn and sorghum grains, but does not affect in vitro and dry matter digestibility or the short-chain fatty acids production.

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外源淀粉酶增加了高粱和玉米谷物的产气量并改善了体外瘤胃消化动力学

摘要本研究旨在评估外源淀粉酶对高粱（sorghum vulgaris）和两个不同质地玉米杂交种的产气、体外干物质消化率（IVDMD）和体外消化动力学的影响。从接受或不接受外源淀粉酶（0.7g kg-1干物质（DM基））的两头瘤胃造瘘奶牛中收集瘤胃液，以达到396公斤Novo单位kg-1的淀粉酶活性（DM基。在培养1、3、6、9、12、15、18、21、24、30、36、42 e 48小时后测量气体产量。淀粉酶使产气量（mL）增加5.4%。玉米杂交种的体外干物质消化率高于高粱。外源淀粉酶增加了产气潜力（A）（P=0.01）。IVDMD存在杂交效应（P<0.01）。外源淀粉酶的加入增加了体外产气，改善了发酵动力学，增加了玉米和高粱籽粒的氨氮产量，但不影响体外和干物质的消化率或短链脂肪酸的产生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.