potassium, calcium), the vegetal (digested pasture plants that cows might eat and then excrete as manure) and the animal (the digestive juices the cow provides during digestion, but also the ‘forces’ she exerts on the matter she is digesting). ...
BD500母牛角female cow horn带生育环have born ring哺乳期母牛鲜牛粪lactation period cowmanure150g牛粪manure/牛角horn 牛粪拌搓均匀后,放进牛角中,然后进行埋土,半年后拿出使用,是培养无氧菌剂的好东西。