Effect of Tannin Inclusion on the Enhancement of Rumen Undegradable Protein of Different Protein Sources

Q4 Veterinary
Kalista E. Loregian, David A. B. Pereira, Fernanda Rigon, Elaine Magnani, Marcos I. Marcondes, Eduardo A. Baumel, Renata H. Branco, Pedro Del Bianco Benedeti, Eduardo M. Paula
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引用次数: 0

Abstract

Tannins can be utilized to increase rumen undegradable protein (RUP) by their capacity to form complexes with diverse nutrients present in the feed. In that regard, high-performance ruminants demand elevated RUP levels. The objective of this study was to evaluate the effects of incorporating varying levels of tannin into three protein sources (cottonseed, peanut, and soybean meals) on ruminal kinetic parameters, ruminal fermentation, and intestinal digestibility. Thus, three in situ experiments were conducted to investigate the ruminal degradation kinetics, where Fraction A represents the soluble portion, Fraction B relates to the portion potentially degraded in the rumen, and kd denotes the degradation rate of Fraction B, for both dry matter (DM) and crude protein (CP) in the rumen. Additionally, the study assessed dry matter effective degradability (ED), rumen undegradable protein (RUP), and intestinal digestibility (ID). These experiments utilized three cannulated animals for the in situ incubations. Regarding cottonseed meal in terms of DM degradation kinetics, tannin inclusion had a quadratic effect on fraction A (p < 0.01), B (p = 0.10, trend), kd (p = 0.03), and ED (p < 0.01). Fraction A of CP had a cubic effect (p = 0.03), being greater for the control compared with the other treatments. The inclusion of tannin linearly increased RUP (p < 0.01). The RUP proportion increased 29, 33, and 45% when 20, 40, and 60 g/kg tannin were used, respectively, compared to the control. For peanut meal, the A fraction of protein and RUP responded quadratically as tannin was included in peanut meal (p < 0.01). However, tannin levels did not affect fraction B of protein and ID. Regarding soybean meal, fractions A and B of DM and ED had cubic effects (p < 0.01), being greater for the control compared with the other treatments, and responded quadratically as tannin increased. Also, tannin inclusion had a cubic effect on fractions A and B of protein, RUP, and ID (p < 0.01). The cubic behavior showed greater B fraction and ID and lower A fraction and RUP for the control compared other treatments (p < 0.01). Tannins offer a promising avenue for elevating RUP levels in diets featuring cottonseed and peanut meals. Nevertheless, no advantages were observed when treating soybean meal with tannin.
单宁包埋对不同蛋白质源瘤胃不可降解蛋白含量提高的影响
单宁可以通过与饲料中各种营养物质形成复合物的能力来增加瘤胃不可降解蛋白(RUP)。在这方面,高性能的反刍动物需要提高RUP水平。本研究的目的是评估在三种蛋白质来源(棉籽、花生和豆粕)中添加不同水平的单宁对瘤胃动力学参数、瘤胃发酵和肠道消化率的影响。因此,我们进行了三个原位实验来研究瘤胃降解动力学,其中A部分代表可溶部分,B部分代表瘤胃可能降解的部分,kd表示B部分对瘤胃干物质(DM)和粗蛋白质(CP)的降解率。此外,研究还评估了干物质有效降解率(ED)、瘤胃不可降解蛋白(RUP)和肠道消化率(ID)。本实验采用三只空心动物进行原位孵育。棉籽粕DM降解动力学方面,单宁包合对组分a有二次效应(p <0.01), B (p = 0.10,趋势),kd (p = 0.03), ED (p <0.01)。CP A组分具有立方效应(p = 0.03),与其他处理相比,对照组的效果更大。单宁的加入线性地增加了RUP (p <0.01)。与对照相比,当使用20、40和60 g/kg单宁时,RUP的比例分别增加了29、33和45%。对于花生粕,随着花生粕中单宁的加入,蛋白质和RUP的A部分呈二次响应(p <0.01)。然而,单宁水平对蛋白质B部分和ID没有影响。对于豆粕,DM和ED的A、B组分具有立方效应(p <0.01),对照比其他处理更大,且随单宁含量的增加呈二次响应。此外,单宁包合物对蛋白质、RUP和ID的a和B组分有立方效应(p <0.01)。与其他处理相比,对照组的立方行为表现出更高的B分数和ID,更低的A分数和RUP (p <0.01)。单宁为在以棉籽和花生为特色的膳食中提高RUP水平提供了一条有希望的途径。然而,当用单宁处理豆粕时,没有观察到任何优势。
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
Indian Journal of Small Ruminants
Indian Journal of Small Ruminants Veterinary-Small Animals
CiteScore
0.40
自引率
0.00%
发文量
81
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