Inactive yeast metabolites in ruminant nutrition

The control of rumen fermentation and the sustainability of rumen-in conditions is very important in terms of the health of ruminants and the nature of the animal product. It is aimed to manipulate rumen microorganism numbers and activities, increase feed value of feed and improve fermentation efficiency by using inactive yeast metabolite. Inactive yeast metabolites used to prevent adverse effects of rumen fermentation and increase yield are biotechnological products with high nutritional value. In addition to being used safely in place of antibiotics, they have additional advantages such as being more effective in rumen than other yeast species and not being adversely affected by feed processing techniques. In addition to being natural and economical, they are important for their positive effects when used with low quality roughage in recent years. In this study; inactive yeast metabolites comparison with live yeasts and researches on their use in ruminant feeding, feed consumption, cellulose digestibility, the number of anaerobic and cellulolytic bacteria, rumen pH and volatile fatty acids composition can be changed in a positive way with the concentration of oxygen concentration of rumen liquid and lactate accumulation can be reduced. It was concluded that ammonia nitrogen could be more effective for microbial protein.