Effects of dietary yeast autolysate (Saccharomyces cerevisiae) on performance, egg traits, egg cholesterol content, egg yolk fatty acid composition and humoral immune response of laying hens

Abstract

Dietary yeast autolysate at levels of 2, 3 and 4 g kg(-1) had beneficial effects on performance, egg cholesterol content and humoral immune response. It is concluded that 2 g kg(-1) yeast autolysate will be enough to have beneficial effects in laying hens.

Effects of Kluyveromyces marxianus Isolated from Tibetan Mushrooms on the Plasma Lipids, Egg Cholesterol Level, Egg Quality and Intestinal Health of Laying Hens

“…Moreover, the egg concentrations of vitamin A, crude fat, vitamin E, calcium, zinc, selenium, and dry matter also dramatically improved in the eggs of yeastfed hens (Table 5). Similar studies reported a significant improvement of egg production in hens fed a mixed culture of probiotics, such as Lactobacillus acidophilus and Lactobacillus casei (Tortuero & Fernandez, 1995), L. acidophilus alone , Pediococcus acidilactici (Mikulski et al, 2012), Bacillus subtilis (Xu et al 2006;Abdelqader et al 2013), Propionibacterium jensenii (Luo et al, 2010), and Saccharomyces cerevisiae (Yalçin et al, 2010). Significant improvements in egg weight and eggshell quality were also obtained in hens fed diets supplemented with a mixture of Lactobacillus cultures (Davis & Anderson, 2002;Kalavathy et al, 2009).…”

“…Yeast and yeast products may also serve as alternatives to antibiotics to promote growth and disease resistance in poultry (Yalçin et al, 2010). In recent years, there has been an increasing number of reports documenting the use of various yeast strains and yeast products, such as inactive dried yeast, yeast culture, whey yeast, selenium yeast, chromium yeast and yeast cell walls, in the diets of laying hens.…”

“…In recent years, there has been an increasing number of reports documenting the use of various yeast strains and yeast products, such as inactive dried yeast, yeast culture, whey yeast, selenium yeast, chromium yeast and yeast cell walls, in the diets of laying hens. The inclusion of yeast in layer diets was shown to change egg production (Davis & Anderson, 2002), cholesterol content of the egg yolk (Yousefi & Karkoodi, 2007;Yalçin et al, 2008a), intestinal health of the hens (Yalçin et al, 2010;Lensing et al, 2012), egg quality (Utterback et al, 2005;Yalçin et al, 2008a, b;Yalçin et al, 2009;Yalçin et al, 2010), and egg fat content (Savage et al, 1985;Hosseini, 2011), among others.…”

The Visceral Organ, Gastrointestinal Tract and Blood Characteristics in Pegagan Ducks Fed Ration Fermented by Tape Yeast with Different Moisture Content

“…In addition, the yeast is also used as a feed supplement in poultry rations that can stimulate the growth process (Yalçın et al, 2013). The use of yeast in the feed has been widely studied and have a significant effect on performance and physiological responses to poultry, such as increasing the immune response (Asli et al, 2007;Yalçın et al, 2010;Haldar et al, 2011), lowering the blood cholesterol levels (Yalçın et al, 2010) and increasing the digestibility of nutrients (Gao et al, 2008).…”

Effects of dietary yeast cell wall on performance, egg quality and humoral immune response in laying hens

“…There are some reports about the usage of various yeast and yeast products such as inactive dried yeast, yeast culture, whey yeast, selenium yeast, chromium yeast and yeast autolysate in the diets of laying hens on performance (13,31,32,34). Yalçın et al (2010) concluded that dietary yeast autolysate at the levels of 2, 3 and 4 g/kg had beneficial effects on performance, egg cholesterol content and humoral immune response.…”