The Effects of Increasing Levels of Yeast Culture (Levucel SB) in a High Fibre-Diet on the Performance and Nutrient Retention of Broiler Chicks

Carcass and organ characteristics of finishing broilers fed diets containing probiotics (Saccharomyces cerevisiae)

“…The non-significant difference in the growth performance of birds recorded in the current study suggests that S. cerevisiae plays little or no significant role in stimulating growth response in finishing broilers at the inclusion levels used in the present study. This result disagrees with several authors (Oyedeji et al, 2008;Afsharmanesh et al, 2010;Yalcin et al, 2013;Chuka, 2014;Onwurah et al, 2014;Yasar and Yegen, 2017) who recorded outstanding growth performances in poultry birds when fed S. cerevisiae. Although their reports indicated that the dietary administrations of S. cerevisiae were done with day-old chicks, the introduction of S. cerevisiae in the diets of the birds in the current study was done at the finishing phase of the birds.…”

“…Because most of these growth enhancers are either carcinogenic or have a residual carryover effect with the attendant health implications in man (Al-Dobaib and Mousa, 2009;Camila et al, 2012), it is therefore pertinent to search for their alternatives which will not only enhance growth of the birds but also ensure safe meat for the consuming populace. A popular alternative is the use of probiotics, which has been proven in poultry to compete and exclude bacterial pathogens in the gastrointestinal tract of the birds (Murry et al, 2004;Abudabos et al, 2013;Baldwin et al, 2018), agglutinate harmful bacteria such as Salmonella (La Ragione and Woodward, 2003;Murry et al, 2004), encourage complete absorption of nutrients by the birds' gut (Mountzouris et al, 2010;Murshed and Abudabos, 2015), degrade fibrous resources in poultry feeds (Adejumo et al, 2005;Oyedeji et al, 2008) and also muster essential amino acids, vitamins and trace minerals required for the most favorable growth of the animal (Choi et al, 2013;Zhang and Kim, 2014;Podolian, 2017).…”

Saccharomyces cerevisiaeas a probiotic feed additive to non and pseudo‐ruminant feeding: a review

“…). Furthermore, Oyedeji et al () reported that inclusion of 200, 250 and 300 mg of S. cerevisiae (Levucel SB) per kg diet resulted in an increase in total body weight gain, low feed conversion ratio and a reduction mortality rate in broilers after 4 weeks. Abdelrahman () observed that inclusion of dry fat together with 3 kg of S. cerevisiae per ton of feed had no effect on total feed intake but increased total weight gain, reduced feed conversion ratio and low blood cholesterol levels were obtained in broilers compared to the control when using corn oil as the energy source.…”

The effects of Blood Rumen Content Mixture (BRCM) meal supplemented with yeast on the performance and gut microbial populations of broiler chickens

“…With the knowledge of poultry's limited ability to breakdown fibre in diets, Levucel SB yeast was supplemented into the BRCM containing diets as a means of aiding in fibre digestion as well as improving feed intake. Levucel SB yeast has been reported to help broiler chicks utilize high fibre diets (Oyedeji et al, 2008). Adejumoet al,(2005) reported that indirect benefit of yeasts can arise when yeast and metabolic enzyme breakdown the fibrous and nutrient content of the diet.…”

“…Charlie (1998) reported that supplementation of 2-3g yeast per Kg diet is effective in improving growth and feed efficiency in broilers fed high fibre diets. Oyedeji et al (2008) reported a significant fibre digestibility when Levucel SB yeast was supplemented at 300mg/Kg in broiler diets containing high fibre. Yeast in poultry diet stimulates the growth of some anaerobic bacteria including cellulolytic and lactic acid utilizing bacteria (Chaucheyraset al,1995, Yoon andStern, 1996).…”