Evaluation of biochemical profile and rumen fluid parameters of sheep supplemented with Saccharomyces cerevisiae and subjected to an abrupt diet change

Schmidt, Ana Paula; Noschang, Joana Piagetti; Carpinelli, N.; Demarco, Cláudia Faccio; Vieira, Laura Valadão; Barbosa, Antônio Amaral; Corrêa, Márcio Nunes; Schmitt, Eduardo; Feijó, Josiane de Oliveira; Brauner, Cássio Cassal

doi:10.5433/1679-0359.2020v41n6supl2p3311

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Entretanto, a adição da levedura, possivelmente, proporcionou melhoria do ambiente ruminal para o segundo período avaliado. Estudos têm indicado que a inclusão de leveduras tem proporcionado melhor estabelecimento de bactérias e fungos com ações celulolíticas, contribuindo para um melhor aproveitamento da dieta no período subsequente (SCHMIDT et al, 2020;OBEIDAT et al, 2018).…”

Section: Resultsunclassified

Desempenho de Cordeiros Desmamados Alimentados com Dieta Contendo Levedura Autóctone do Ambiente Ruminal

Júnior

Freitas²,

Santos³

et al. 2022

Ensaios Ciênc.

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Objetivou-se avaliar o desempenho da adição de uma cepa de levedura isolada do líquido ruminal de ovino hígido na dieta de cordeiros desmamados e alimentados com feno de Urochloa decumbens. No estudo, foram utilizados doze cordeiros, Santa Inês x Dorper, recém-desmamados. Os animais passaram por um período de adaptação referente às instalações (15 dias) e por dois períodos de experimentação (42 dias). O experimento foi conduzido em parcelas subdivididas, para avaliar o desempenho de um grupo de animais recebendo a levedura e outro grupo controle recebendo o meio de cultivo sem a levedura. Nas subparcelas foram avaliados dois períodos de 21 dias. Os cordeiros suplementados com a levedura apresentaram maior ganho de peso diário (± 243,3 g/dia), em comparação àqueles não suplementados (± 189,8 g/dia), (teste de Wilcoxon, p< 0,10). Foi constatado maior consumo de matéria seca no segundo período (21-42 dias) para os animais suplementados com a levedura (P < 0,05). Entretanto, não houve interação significativa entre os tratamentos e os períodos para peso vivo final e ganho de peso médio diário, além disso não foram evidenciadas diferenças significativas para a conversão alimentar. Neste estudo se constatou que, a suplementação dessa cepa de levedura para cordeiros desmamados estimula o consumo de dieta contendo forragem tropical de baixa qualidade. Palavras-chave: Desempenho Produtivo. Ovinocultura. Probiótico. Rhodotorula mucilaginosa. Urochloa decumbens. Abstract The objective of this study was to evaluate the performance of the addition of a yeast strain isolated from the rumen fluid of healthy sheep in the diet of lambs weaned and fed with Urochloa decumbens hay. Twelve Santa Inês x Dorper lambs were evaluated. The animals underwent an adaptation period regarding the facilities (15 days) and two experimentation periods (42 days). The experiment was carried out in split plots, to evaluate the performance of a group of animals receiving the yeast and another control group supplemented with the sterile culture medium. In the subplots, two periods of 21 days were evaluated. Lambs supplemented with yeast showed greater daily weight gain (± 243.3 g/day), compared to those not supplemented (± 189.8 g/day), (Wilcoxon test, p < 0.10). Higher dry matter intake was observed in the second period (21-42 days) for the animals supplemented with yeast (P < 0.05). Keywords: Productive Performance. Sheep Farming. Probiotic. Rhodotorula mucilaginosa; Urochloa decumbens.

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Section: Resultsunclassified

Desempenho de Cordeiros Desmamados Alimentados com Dieta Contendo Levedura Autóctone do Ambiente Ruminal

Júnior

Freitas²,

Santos³

et al. 2022

Ensaios Ciênc.

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Effect of refeeding on growth performance, blood metabolites and physiological parameters of Dorper × Santa Ines lambs previously subjected to feed restriction

et al. 2022

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Context Weaned lambs raised on pasture-based systems in Brazil are often subjected to periods of forage shortage, limiting their nutrient and energy intake and, hence, their growth. Fast recovery of lamb body weight is important to the efficiency, sustainability and profitability of these sheep production systems. Aim We evaluated the effects of refeeding on growth performance, blood metabolites and physiological parameters of Dorper × Santa Ines lambs after low and moderate feed restriction, to determine whether there was a compensatory growth response. Methods Twenty-four non-castrated male lambs were assigned to a completely randomised design with three treatments and eight replicates. The trial was conducted in a feedlot and divided into two phases: (1) feed restriction for 64 days, and (2) refeeding for 42 days. In Phase 1, the respective treatments provided energy supplies of 0.481, 0.841 and 1.205 MJ metabolisable energy per kg metabolic weight daily, corresponding to 60% (PR60, moderate) and 30% (PR30, low) feed restriction levels and ad libitum intake. In Phase 2, the lambs in PR60 and PR30 treatments were refed ad libitum. Performance and blood measurements were taken in Phase 1 for the ad libitum treatment, and Phase 2 for PR60 and PR30 treatments. Key results Highest initial and final bodyweights of 32.7 and 41.2 kg were recorded in the PR30 treatment during Phase 2, compared with 23.0 and 36.7 kg averaged over PR60 and ad libitum treatments. Average daily gain did not differ among treatments (276 g/day, on average). Dry matter intake was significantly higher in PR30 than the ad libitum treatment (1406 vs 1158 g/day), with PR60 intermediate (1267 g/day). Serum levels of albumin, urea and creatinine indicated that protein metabolism was strongly affected by the PR60 treatment. High metabolic rate and subsequent rapid growth determined high respiratory rate and rectal temperature in the lambs from PR60 and PR30 treatments. Conclusions Moderate feed restriction relative to maintenance level followed by an ad libitum refeeding period in the feedlot leads to a strong compensatory growth response in Dorper × Santa Ines lambs. Implications In periods of low feed availability, keeping weaned lambs under moderate feed restriction is a good strategy to induce an efficient compensatory growth response in the feedlot during the finishing phase.

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Evaluation of biochemical profile and rumen fluid parameters of sheep supplemented with Saccharomyces cerevisiae and subjected to an abrupt diet change

Cited by 2 publications

References 19 publications

Desempenho de Cordeiros Desmamados Alimentados com Dieta Contendo Levedura Autóctone do Ambiente Ruminal

Desempenho de Cordeiros Desmamados Alimentados com Dieta Contendo Levedura Autóctone do Ambiente Ruminal

Effect of refeeding on growth performance, blood metabolites and physiological parameters of Dorper × Santa Ines lambs previously subjected to feed restriction

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