O uso de monensina sódica e probióticos para o controle de acidose ruminal subaguda em ovinos

Schwegler, Elizabeth; Silveira, Pedro Augusto Silva; Montagner, Paula; Silva, Viviane Maciel da; Rabassa, Viviane Rohrig; Schneider, Augusto; Roos, Talita Bandeira; Pfeifer, Luiz Francisco Machado; Schmitt, Eduardo; Pino, Francisco Augusto Burkert Del; Corrêa, Márcio Nunes; Gil-Turnes, Carlos

doi:10.11606/issn.1678-4456.v51i4p324-339

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“…An increase in the level of AST enzyme was observed after the period with the highest energy supply, which remained until the end of the following period. The increase of this metabolite in animals fed a diet rich in energy was also reported by SCHWEGLER et al (2014), demonstrating that there was some liver overload in both periods. In addition, the authors observed that the increase in AST levels was maintained even after a period of recovery from induction of acidosis.…”

Section: Discussionsupporting

confidence: 69%

Use of Saccharomyces cerevisiae-based products and effects on rumen environment and performance of sheep subjected to dietary changes

et al. 2021

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Natural additives in ruminant diet optimizes animal performance by controlling or modifying the rumen fermentation pattern. The aim of this study was to evaluate the effects of using Saccharomyces cerevisiae products during abrupt changes in dietary starch concentration on ruminal pH maintenance, performance and metabolism of confined sheep. Twenty adult ewes, crossbred Texel x Corriedale(44.7±6.97 Kg BW) were divided into three groups: Control (n=6), Cultron X (yeast culture; n=7) and Cultron Pro (hydrolyzed yeast; n=7), administered at a dose of 5 g/sheep/day (10x1010CFU/g DM). The experiment lasted 20 days divided into four periods, alternating between 40 and 60% concentrate. Blood and ruminal fluid were collected at the end of each period, and daily dry matter intake was measured to determine the average daily gain (ADG). Blood tests included blood count and biochemical parameters such as glucose, urea, total plasma proteins (TPP), liver enzymes, acute phase proteins and minerals. There was an upward trend in ADG in group Cultron X compared to control in period 3. Although, ruminal pH did not differ between groups, protozoan motility was higher in animals supplemented with hydrolyzed yeast. The Cultron Pro group showed an increase in TPP in periods 3 and 4, and AST in periods 2 and 3 compared to the control group. There was no difference in other metabolites. Yeast supplementation is a potential tool in times of feeding challenge, in which yeast culture is the most effective for improving performance of confined sheep being in improving performance of confined sheep.

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Section: Discussionsupporting

confidence: 69%