The effects of Saccharomyces cerevisiae supplementation on intake, nutrient digestibility, and rumen fluid pH in Awassi female lambs

Abstract

Aim:The aim of this study was to evaluate the effect of feeding low (LO)- or high (HI)-fiber diets supplemented with Saccharomyces cerevisiae (SC) on nutrient intake, digestibility, nitrogen balance, rumen fluid pH, and serum concentrations of glucose and urea nitrogen in Awassi female lambs in a 2×2 factorial arrangement of treatments.Materials and Methods:Experimental diets were as follows: (1) LO-fiber diet with no SC supplementation (−LO), (2) LO-fiber diet supplemented with SC (+LO), (3) HI-fiber diet with no SC supplementation (−HI), or (4) HI-fiber diet supplemented with SC (+HI). Eight female lambs were used in a replicated 4×4 Latin square design with 15-day experimental periods (10-day adaptation period and 5-day collection period).Results:A fiber×SC interaction (p≤0.05) was detected for dry matter (DM) and crude protein (CP) intake among diets showing greater DM and CP intake for +LO diet compared to +HI group supplemented with SC, whereas −LO and −HI were intermediate. A fiber×SC interaction (p=0.05) was also detected for the neutral detergent fiber (NDF) intake among diets. Intake of NDF was greater for the –HI diet compared with +LO and –LO diets. Similarly, NDF intake was greater for +HI diet than –LO diet. A tendency (p=0.07) for a fiber×SC interaction was detected for acid detergent fiber (ADF) intake among diets as well. ADF intake tended to be greater for HI-fiber diets. No difference was observed in the rumen fluid pH for lambs fed with the different diets. No fiber×SC interactions were detected for the digestibility of DM, CP, NDF, and ADF among dietary treatments. Digestibility of DM was greater (72.9 g/100 g vs. 67.1 g/100 g; p=0.0002) for LO versus HI fiber. However, NDF and ADF digestibilities were greater (60.8 and 61.9 g/100 g vs. 55.8 and 52.7 g/100 g for NDF and ADF digestibility, respectively; p≤0.01) for the HI-fiber than the LO-fiber diets.Conclusion:Results obtained in the current study indicate that SC supplementation has a minimal effect on the performance of Awassi female lambs fed with varying fiber levels.

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

“…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).…”

Intake and digestibility of rations with distillery yeasts byproducts, molasses and ammoniated sugar cane tops in lambs in total confinement

“…Obeidat et al (29) was to evaluate the effect of feeding low (LO)-or high (HI)-fiber diets supplemented with Saccharomyces cerevisiae (0.25 gr/day/lamb), Awassi female lambs (6 months old) were used, diet HI was 13.8% CP, 52% NDF, 21.9% ADF; the DM and CP intake were 1143 g/d and 158 g/d; digestibility were: DM 66%, CP 70.2%, NDF 59.8% and ADF 60.9%. This experience had a similar performance in the DM intake and higher in all the digestible fractions evaluated than the one achieved here, this was surely marked by a soybean and barley grain content of 43% and only 43% of wheat straw.…”

Effects of Saccharomyces cerevisiae Culture on Ruminal Fermentation, Blood Metabolism, and Performance of High-Yield Dairy Cows

“…It contains fermentation substrates, bacterial proteins, yeast metabolites, yeast cell walls, and other beneficial substances, and it has the functions of balancing animal intestinal flora, improving immunity, relieving stress, and improving productivity [ 7 ]. Obeidat et al [ 8 ] reported that adding SC to the diet increased the dry matter intake (DMI), nutrient digestibility, and rumen fluid pH of ruminants. It could also improve the milk quality of dairy cows [ 9 ].…”