Effects of adding agro-industrial by-products and bacterial inoculant at ensiling on nutritional quality and bacterial colonization of Tifton 85 [Cynodon dactylon (L.) Pers.] silages

IF 0.9 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Tropical Grasslands-Forrajes Tropicales Pub Date : 2022-09-30 DOI:10.17138/tgft(10)204-213

André Sanches de Avila, M. A. Zambom, A. Faccenda, M. A. Neres, Luana Muxfeldt, C. R. Schneider, Marcelo Martini Stum, Ricardo Dri, Pâmela Rosana Schneider

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引用次数: 0

Abstract

The objective of this study was to evaluate effects of adding agro-industrial by-products (soybean hulls and cornprocessing residue) and bacterial inoculant to Tifton 85 forage at ensiling on nutritional quality and bacterial colonization of resulting silages. The design was completely randomized in a 3 × 2 factorial scheme, with 6 treatments and 4 replicates. Treatments were: Tifton 85 forage; Tifton 85 + soybean hulls; Tifton 85 + corn-processing residue; Tifton 85 + bacterial inoculant; Tifton 85 + soybean hulls + inoculant; and Tifton 85 + corn-processing residue + inoculant. Inclusion of by-products increased dry matter and organic matter percentages of silages, while addition of soybean hulls improved crude protein concentration in silage. Total digestible nutrients in silages containing by-products were higher than in straight Tifton 85 silage. In addition, addition of by-products increased in vitro dry matter and organic matter digestibilities of resulting silages. Most treatments showed aerobic stability up to 144 hours after exposure to air, except for Tifton 85 + corn-processing residue without inoculant, which became unstable by 120 hours of exposure. Addition of by-products at ensiling of Tifton 85 forage appears beneficial but there seems little benefit in adding bacterial inoculant. More studies on a larger scale are needed to confirm these preliminary results, while feeding studies would determine any improvement in animal performance when fed silage containing by-products.

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青贮过程中添加农工副产物和细菌接种剂对Cynodon dactylon (L.) Tifton 85营养品质和细菌定植的影响珀耳斯。]青贮饲料

本试验旨在评价在蒂夫顿85青贮饲料中添加农工副产物(大豆皮和玉米加工渣)和细菌接种剂对青贮饲料营养品质和细菌定植的影响。设计采用完全随机3 × 2因子方案，6个处理，4个重复。处理为:Tifton 85饲料;蒂夫顿85 +大豆皮;蒂夫顿85 +玉米加工残留物;蒂夫顿85 +细菌接种剂;提夫顿85 +大豆皮+接种剂;和蒂夫顿85 +玉米加工残渣+接种剂。副产物的添加提高了青贮饲料的干物质和有机质百分比，大豆皮的添加提高了青贮饲料的粗蛋白质含量。含副产物青贮的总可消化营养物质高于直接的提夫顿85青贮。此外，副产物的添加提高了青贮的体外干物质和有机物消化率。大多数处理在暴露于空气后144小时内表现出好氧稳定性，但没有接种剂的Tifton 85 +玉米加工残留物在暴露120小时后变得不稳定。在蒂夫顿85青贮饲料中添加副产物对青贮有益，但添加细菌接种剂效果不明显。要证实这些初步结果，还需要进行更多更大规模的研究，而饲养研究将确定饲喂含有副产品的青贮饲料是否能改善动物的生产性能。

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来源期刊

Tropical Grasslands-Forrajes Tropicales Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The Journal publishes, in English or Spanish, Research Papers and Short Communications on research and development, as well as contributions from practitioners (Farmer Contributions) and Review Articles, related to pastures and forages in the tropics and subtropics. There is no regional focus; the information published should be of interest to a wide readership, encomprising researchers, academics, students, technicians, development workers and farmers. In general, the focus of the Journal is more on sown (''improved'') pastures and forages than on rangeland-specific aspects of natural grasslands, but exceptions are possible (e.g. when a submission is relevant for a particularly broad readership in the pasture and forage science community). The Journal will also consider the occasional publication of associated, but closely related, research in the form of an additional scientific communication platform [e.g. a re-make of the former Genetic Resources Communication series of the former Division of Tropical Crops and Pastures of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia]. Areas of particular interest to the Journal are: Forage Genetic Resources and Livestock Production[...] Environmental Functions of Forages[...] Socio-economic Aspects[...] Topics within the aforementioned areas may include: Diversity evaluation; Agronomy; Establishment (including fertilization); Management and utilization; Animal production; Nutritive value; Biotic stresses (pests and diseases, weeds); Abiotic stresses (soil fertility, water, temperature); Genetics and breeding; Biogeography and germplasm collections; Seed production; Ecology; Physiology; Rhizobiology (including BNF, BNI, mycorrhizae); Forage conservation; Economics; Multilocational experimentation; Modelling.