... high protien45%,50%,55%,60% 3.improve animal grow Cow feed additives:Yeast powder(Feed grade) 40%,45%,50 ... to reduce costs. 2. Rich in a variety of vitamins and carotenoids, especially rich in vitamins B, can prevent ... vitamin B deficiency occurred. 3. Rich in a variety of digestive enzymes, not only help ... life: 12 monthsPackage 1Package 2Used for animal cow feed additives--yeast feed