The balance of rumen degradable protein and readily available carbohydrate in sheep rations on in vitro fermentability.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-12-31 eCollection Date: 2023-12-01 DOI:10.5455/javar.2023.j729

Yunilas Yunilas, Mardiati Zain, Ujang Hidayat Tanuwiria, Jasmal Ahmari Syamsu

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Abstract

Objective: Protein and carbohydrates are substances needed by ruminants, especially sheep. Providing protein and carbohydrates must pay attention to their degradation. In addition, balancing nutrients to meet the nutritional needs of rumen microbes is very important because the unbalanced availability of rumen degradable protein (RDP) and readily available carbohydrate (RAC) at one time can cause suboptimal microbial protein synthesis efficiency.

Materials and methods: Completely randomized design with a nonfactorial pattern of five treatments with three replications. Treatment includes RDP and RAC ratios, namely R1 = 2.30, R2 = 2.00, R3 = 1.70, R4 = 1.50, and R5 = 1.30.

Results: The results showed that the balance of RDP and RAC in sheep ration formulation in vitro had a very significant effect (p < 0.01) on NH₃, microbial protein synthesis, total gas, total microbes, and organic matter digestibility (OMD) but had no significant effect (p > 0.05) on rumen pH and dry matter digestibility (DMD).

Conclusion: The optimal balance of RDP and RAC in the formulation of sheep rations in vitro was obtained at a ratio of 2.30 with NH₃ (mM) 8.47, rumen pH 5.97, microbial protein synthesis (mg/100 ml) 123, gas (ml/g of material) 145, total microbes (cells/ml) 2.012 × 10⁶, (log CFU cells/ml) 6.3025, DMD 61.0%, and OMD 63.1%.

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绵羊日粮中瘤胃可降解蛋白质和易得碳水化合物的平衡对体外发酵性的影响。

目的：蛋白质和碳水化合物是反刍动物（尤其是绵羊）所需的物质。提供蛋白质和碳水化合物必须注意它们的降解。此外，平衡营养以满足瘤胃微生物的营养需求也非常重要，因为如果瘤胃可降解蛋白质（RDP）和易得碳水化合物（RAC）在同一时间供应不平衡，会导致微生物蛋白质合成效率不达标：完全随机设计，五个处理三个重复的非因子模式。处理包括 RDP 和 RAC 比率，即 R1 = 2.30、R2 = 2.00、R3 = 1.70、R4 = 1.50 和 R5 = 1.30：结果表明，体外绵羊日粮配方中 RDP 和 RAC 的平衡对 NH3、微生物蛋白质合成、气体总量、微生物总量和有机物消化率（OMD）有非常显著的影响（p < 0.01），但对瘤胃 pH 值和干物质消化率（DMD）没有显著影响（p > 0.05）：体外配制绵羊日粮中 RDP 和 RAC 的最佳平衡比为 2.30，NH3（毫摩尔）为 8.47，瘤胃 pH 为 5.97，微生物蛋白质合成（毫克/100 毫升）为 123，气体（毫升/克物料）为 145，微生物总数（细胞/毫升）为 2.012 × 106，（对数 CFU 细胞/毫升）为 6.3025，干物质消化率为 61.0%，有机物质消化率为 63.1%。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.