Because of the quality of the soft-shelled turtle feed, it will not only directly affect the healthy breeding of soft-shelled turtles, but also affect the economic benefits of breeding. However, the quality of soft-shelled turtle feed is not only costly and time-consuming when detected by modern instruments, but it is easy for non-general farms to do. However, it is difficult to determine the color, odor and shape of the surface of the feed alone, because there are many additives that can meet the requirements of the feed surface indicators, but the actual quality of the results, in the turtle feeding process, often have to wait for a long time Talent is now apparent. It is often too late to discover. A method for judging the quality of soft-shelled turtle by observing the feces and water color is briefly introduced and is for reference only. Regardless of the feed of seedlings, seeds, and clams, the excrement of excrement in the normal culture environment after the ingestion of the turtle is different depending on the quality of the feed. The first is to observe the shape of the feces discharged on the day. Some turtles excrete very long excrement, and some even adhere to the anus, and others are curled. This shows that there is an excessive proportion of the feed that is not easily digested and absorbed by turtles, such as some plant proteins. In particular, plant proteins that have not been activated. The second is the excessive proportion of feed ingredients containing more carbohydrates, such as ordinary raw starch, flour and so on. When the soft-shelled turtle feed is eaten by soft-shelled turtles, the excreted manure is very short and will not stick to the anus of the soft-shelled turtle. The second is to look at the color of feces. Normal feces, such as high-quality animal feed, the color of the feces should be grayish green or grayish white. If the proportion of starch or vegetable protein feed is too high, the feces will be milky white. If there are additives such as yellow pigment in the feed, the feces will be pale yellow. The third is to look at the color. In some places where feed is fed underwater and the excrement is difficult to see, water color discrimination can be seen because faeces are the main factor that directly changes the color of water. Normally, the normal color of Dianchi Lake is light green, and if it is normal high-quality feed, the color of the water that is contaminated by the feces is brown first, followed by black when severe, and there is an unpleasant odor. However, in some industrialized greenhouses, the pool water is milky white or light yellow and has some smell or fermented taste. This is also caused by the decomposition of the fecal matter discharged after eating the non-digestible feed, and should be noticed.
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