Effect of mannan oligosaccharides on the performance, intestinal morphology and cecal fermentation of fattening rabbits

Effect of mannan oligosaccharides on rabbit performance, digestibility and rectal bacterial anaerobic populations during an episode of epizootic rabbit enteropathy.

“…Volek et al (2007) found lower mortality rates with rabbits weaned at 25 d of age and fed MOS at 3 g/kg and also lower digestibility coefficients (measured at 40 d of age) for organic matter, crude protein and cellulose compared to the control group (without additives). Mourao et al (2006) found no differences in feed conversion ratio in rabbits fed antibiotics compared to those fed MOS at three different concentrations (1.0, 1.5 and 2.0 g/kg), whereas the MOS groups showed significantly (P<0.05) lower feed conversion ratios than the control group without additives. However, this trial was made on a rabbit farm in which the mortality rate in the group fed without additives was 8.75 %, indicating a good health status in the building.…”

“…Fonseca et al (2004) recorded a reduction in mortality with 2 g/kg MOS in the diet compared to oxytetracycline supplementation (1000 ppm) with no effect on rabbit growth performance. However, Mourao et al (2006) found no differences between MOS (1.0, 1.5 and 2.0 g/kg) and Zn bacitracin (0.1 g/kg) for mortality and growth rate, probably due to the relatively low mortality rate (from 1 to 9%) observed. Besides dietary MOS supplementation (2.0 and 1.0 g/kg MOS) stimulated intestinal villi development and caecal volatile fatty acid concentrations and reduced caecal pH (Pinheiro et al, 2004;Mourao et al, 2006).…”

“…However, Mourao et al (2006) found no differences between MOS (1.0, 1.5 and 2.0 g/kg) and Zn bacitracin (0.1 g/kg) for mortality and growth rate, probably due to the relatively low mortality rate (from 1 to 9%) observed. Besides dietary MOS supplementation (2.0 and 1.0 g/kg MOS) stimulated intestinal villi development and caecal volatile fatty acid concentrations and reduced caecal pH (Pinheiro et al, 2004;Mourao et al, 2006). Guedes et al (2009) also found that the addition of 2.0 g/kg MOS to the diet increased VFA concentration in the caecum of growing rabbits, but Pinheiro et al (2009) observed that 1.0 g MOS/kg was not able to reduce the negative effects of low fibre diets on rabbit growth performance.…”

“…Several authors (Pinheiro et al, 2004, Mourao et al, 2006 reported that MOS increased the length of villi at the ileum, possibly as a result of impriving the intestinal environment compared to rabbits fed without additives. Better development of intestinal villi can justify the higher feed utilisation of MOS1.0 rabbits.…”

The effect of yeast Yarrowia lipolytica on the antioxidant indices and macro-and microelements in blood plasma of turkey hens

“…The results of studies conducCorrespondence to: A. Czech, e-mail: anna.czech@up.lublin.pl, tel. : +48 81 445 67 46 ted on various animal species (mainly cattle and pigs) indicate that the use of this species of yeast has multifaceted benefits, due in part to its chemical composition and biochemical functions (Wójcik et al 2008,According to Davis et al (2004) and Wójcik et al (2008), an immune activation effect can be attributed to Saccharomyces cerevisiae, while according to Mourfo et al (2005) it has an inhibitory effect on the replication of pathogenic bacteria and their toxins. SC yeast also stimulate replication of the saprophytic microflora of the digestive tract, which has been demonstrated in studies by Mathew et al (1998) and Baurhoo et al (2009).…”