Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 540943
Title Effect of Tannin and Soybean Oil Supplementation on Gas Production, Degradability and Ruminal Fermentation
Author(s) Apdini, T.A.P.; Dijkstra, J.; Ribeiro Menezes, Daniel; Silva Santana, Aline da; Rodriges de Lima, Patricia; Fróes Garcez Neto, Américo
Event Tropentag 2017, Bonn, 2017-09-20/2017-09-22
Department(s) Animal Production Systems
Animal Nutrition
Publication type Abstract in scientific journal or proceedings
Publication year 2017
Abstract Tannins and soybean oil are available as feed supplement to ruminants in the semi-arid region of Brazil and potentially change the degradability of nutrients and gas production. The aim of this study was to evaluate the influence of diets with condensed tannin (CT) and soybean oil (SBO) supplementation on in vitro gas production, degradability and ruminal fermentation characteristics. The inclusion of CT and SBO replaced equal amount of concentrate in dry matter basis. Treatments were T1 = 60% elephant grass + 40% concentrate (control); T2 = 60% elephant grass + 37% concentrate + 3% CT (Weibull); T3 = 60% elephant grass + 35% concentrate + 5% SBO; T4 = 60% elephant grass + 32% concentrate + 3% CT (Weibull) + 5% SBO. The gas production was decreased with inclusion of CT (104 ml g-1) and SBO (111 ml g-1), with significant interaction between the two supplements (99 ml g-1) compared to control (128 ml g-1). The effective DM degradability was also reduced to inclusion of CT (31.0%) and CT-SBO (33.8%) compared to control (38.4%). The potential degradability of CP was lower due to SBO (73.5%) and CT-SBO (80.3%) inclusion, but higher in NDF potential degradability (71.4%) than control treatment (84.9% to CP and 63.8% to NDF). In terms of effective degradability, CT was the supplement which presented most regular pattern to decrease the degradability of DM, CP and NDF. The effective interaction of supplements is dependent on the type of the nutritional parameter under evaluation. The SBO was the supplement with wider effect on ruminal fermentation, increasing the pH (6.58 vs. 6.50) and NH3-N (19.5 vs 13.9 ml l-1 of rumen liquid) in comparison to control. The supplements can be regarded as effectives to control the degradability of nutrients and gas production.
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