Fermentative profile and nutritive value of maize, legume and mixed silage

Semina: Ciências Agrárias Pub Date : 2023-12-14 DOI:10.5433/1679-0359.2023v44n5p1909

Luciana Maria da Silva, K. Costa, J. A. G. E. Silva, João Victor Campos Pinho Costa, Adriano Carvalho Costa, Eduardo da Costa Severiano, P. B. Fernandes, Katryne Jordana de Oliveira, Kamilly Tiffany Magalhães Mendonça, Gercileny Oliveira Rodrigues

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Abstract

The partial substitution of maize by tropical legumes for the production of silage has aroused interest, for bringing benefits of increasing the crude protein content of corn-only silage, constituting an important alternative for the production of food in a more sustainable way. In this context, the objective of this study was to evaluate the effect of addition 30% tropical legumes on the fermentative characteristics and nutritive value of maize silage. The experimental design was entirely randomized with three replications. The treatments consisted of the following silages: Maize; Stylosanthes cv. Campo Grande, Stylosanthes cv. Bela: Pigeon pea (Cajanus cajan cv. BRS Mandarim), maize + 30% Campo Grande; maize + 30% Bela and maize + 30% Pigeon pea, totaling 21 experimental silos. The results show that exclusive legume silage without preservatives present fermentative losses that compromise the silage quality. Addition of 30% legumes to maize silage improves the nutritional quality of the silage without compromising its fermentation profile. Stylosanthes cv. Campo Grande and Bela are the most recommended locations for maize silage. Thus, a mixed silage of maize and legumes is an alternative to improve the crude protein content of exclusive maize exclusive silage, greater sustainability, and reduced fermentative losses of legume silages.

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玉米、豆科植物和混合青贮饲料的发酵概况和营养价值

用热带豆科植物部分替代玉米生产青贮饲料的做法引起了人们的兴趣，因为这有利于提高纯玉米青贮饲料的粗蛋白含量，是以更可持续的方式生产粮食的重要替代品。因此，本研究旨在评估添加 30% 热带豆科植物对玉米青贮发酵特性和营养价值的影响。实验设计完全随机，三次重复。处理包括以下青贮饲料：玉米、Stylosanthes cv. Campo Grande、Stylosanthes cv. Bela、豌豆（Cajanus cajan cv. BRS Mandarim）、玉米 + 30% Campo Grande、玉米 + 30% Bela 和玉米 + 30% 豌豆，共 21 个实验筒仓。结果表明，不加防腐剂的豆科植物青贮会造成发酵损失，影响青贮质量。在玉米青贮中添加 30% 的豆科植物可提高青贮饲料的营养质量，同时不影响其发酵特性。Campo Grande 和 Bela 是最值得推荐的玉米青贮地点。因此，玉米和豆科植物混合青贮是一种替代方法，可提高玉米专用青贮的粗蛋白含量，提高可持续性，减少豆科植物青贮的发酵损失。

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Semina: Ciências Agrárias

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