1. Only from the color of pig manure, soft and hard to judge the "quality" of feed. The color of pig manure is darker, which does not necessarily mean that the pig digests well. The color of pig manure caused by a feed with high copper content is generally darker. When the feed contains rich health care drugs, the color of pig manure is sometimes light. Pig digestion, pig premix and other feed materials will affect the color and hardness of pig manure. Generally speaking, the normal feces should not be dry or thin, odorless (but sometimes with ammonia smell), and free of foreign matters.
2. Only from the appearance of pig fur to judge the "quality" of feed.
3. When a general disease occurs, it is mistakenly thought to be caused by feed. In the process of raising pigs, due to different factors such as environment, pig species, feeding conditions and so on, different diseases will be caused, rarely directly caused by feed. Generally, diseases and abnormalities caused by feed include poisoning, sudden change of appetite, etc. Moldy feed sometimes causes diarrhea in pigs, and the change of feed sometimes causes the change of appetite in pigs.
4. Only judging the quality from the flavor of feed. General feed to increase the appetite of pigs will be added with certain flavor agents, but not necessarily very fragrant feed is what pigs like to eat. Pigs generally like milk, fishy, strawberry and so on. In order to attract customers' attention, some manufacturers add more flavor agents, which only increases the invalid cost of feed.
5. Large pig premix is aimed at pig growth stage and other feed net feed materials are added at will. For example, feed small pigs and big pigs with pig premix. This feeding method can not develop the maximum growth potential of Chinese feed volatilized pigs, but also increase feed cost. Adding salt or bone meal with 4% pig premix seems to add nutrition, but adding too much salt can cause accumulation of mild poisoning. The addition of feed materials will reduce the profits of breeding, but sometimes it is effective to add other materials under the correct guidance. Such as adjusting to add drugs, broken grass and so on.
6. The excessive pursuit of pig's body shape and market price leads to the use of large pig feed with stimulants or other additives, which has brought certain adverse effects to the society. In the case of state prohibition, it is also an improper act. Using safe and environmental protection high quality feed is the goal of breeding.