1, different materials. Veterinary students are mostly exposed to livestock diseases. Compared with the aquaculture industry, which has little contact with veterinary specialty, the genre of this paper is simple. So aquaculture papers are not as good as sick papers.

2. Different directions. The main research direction of veterinary specialty is to reduce the diseases of livestock, but the breeding of livestock does not conform to the research direction of veterinary specialty. So aquaculture papers are not as good as sick papers.