The invention relates to a method for preparing an immunity regulatory agent for cattle, poultry and aquaticlivestock, which belongs to the biological agent field.
本发明涉及一种用于家畜、家禽及水产动物的免疫制剂的制备方法，属 于生物制剂领域。
2
The inexpensive powder was first used to give the impression of higher protein levels in aquatic feed, then later in feed for livestock and poultry, the report said.