Brewer's Yeast + Probiotics + Niacin + Vitamins Supplement for Ducks, Chickens and Poultry. (Molt Recovery, Severe Stress, Egg Quality and Development) 20-Ounce PET Plastic Jar{Healthy Flock} Proper nutrition and a well balanced microbiome can help your poultry defend against dangerous pathogens. Brewer's Yeast with Probiotics, Prebiotics and Niacin can help achieve exceptional health in your flock {Beautiful Feathers} Brewer's Yeast contains essential amino acids and vitamins needed to grow and maintain luxurious feathers all year long. One of your critical supplements for the molt {Top Grade Eggs} Healthy Chickens and