By: M. S. Hamzah, Yuli H. Endang, Marsoedi, M. Fadjar Shell growth of pearl oyster is affected by the availability of nacreous liquid containing calcium carbonate (CaCO3). It is nearly similar to mucus from enzymatic metabolism product in …

By: Danang Biyatmoko, Tintin Rostini Efforts to increase egg production in poultry, including ducks this time a lot is done by manipulating the feed, one of which has been developed and has a good prospect is the supplementation of enzymes…