First, when smelling into the silkworm room, smell the smell of the silkworm room. If only the fresh taste of Mulberry leaves in Jamsil, but no Other odors, it shows that the silkworm is disease-free. Second, after listening to the mulberry with the ear, if you hear the sound of the silkworm sang, like the sound of a rustling rustle, it indicates that the big silkworm is healthy. Third, with the eyes to see the body color of silkworm, healthy body generally blue and white. The silky skin of silkworms is intense and lustrous, and it is lively and active. During the rest, it raises its head and chest; the dorsal ganglion beats rhythmically; the development of the group is of the same size; the manure has a certain shape (except for mature silkworms), and the grains are separated. Fourth, after the mouth is blown gently to the silkworm seat, the healthy silkworm immediately raises its head and chest. Fifth, touch the first hand is to put the back of the hand on the silkworm body, such as the feeling of silkworm body is more compact, and cold; Second, when the hand to catch silkworm, silkworm children rebellion strong, then it shows that the children are healthy.
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