Introduction of feeding methods for all kinds of fish feed
Feed is one of the biggest costs. Scientific feeding methods are not only beneficial to the healthy growth of fish, but also save feed and effectively improve the efficiency of fish culture.
1. Pellet feed: the diameter of fish pellet feed is usually 2.5ml 8mm and the length is 5ml 10mm, which can be directly fed in the fishing pond. Feed should not be fed directly when exposed to damp, it should be dried or dried in the sun before feeding; if the feed is bad, it should not be fed again to prevent fish poisoning after eating.
2, cake feed: cake feed for small fish should be broken, soaked, ground and then fed, and then softened to the big fish.
3, cereal feed: large grains such as corn should be processed and crushed and fed to fish; small grains such as grains can be fed to fish after germinating, young grain white sprouts have high nutritional value, fish is easy to digest, absorb quickly and gain weight quickly.
4. Turquoise feed: after the green feed is removed from the soil for large fish, it can be fed directly; for small fish, it should be chopped or beaten, and 0.2% salt should be added to mix well, sprinkle and feed. Cut up the green feed and cook it, mix in the right amount of bran, small fish prefer to eat.
5. Dregs and bran feed: small fish should be softened and ground with dregs feed, while large fish should be fermented until it has the flavor of wine. Feed a small amount at first, and then increase it gradually, but it should not exceed 30% of the total daily feed.
6. Protein feed: @ # @ 254 feed, @ # @ 261 feed, insects and so on are all high-quality animal protein feed for fish, which can be fed directly, or dried into powder and then fed with other feed. For bulk animal feed, it should be chopped and ground and added with adhesive to make small pellets for feeding.
7. Fecal feed: chicken manure, pig manure, cow manure and so on can be used as fish feed. The feces will be dried and ground into powder, and then used in accordance with a certain proportion of other feed. The proportion is generally 40% of chicken dung, 50% of cow dung and 30% of pig manure.
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How to breed shell fish
1. Selection of parent fish: the selected parent fish must be strong, the gonads are fully mature, and the female and male parent fish must be in estrus at the same time. Parent fish must have the characteristics of this species, and usually there should be intimacy between male and female parent fish. Avoid selecting tropical fish in the same nest or related by blood as parent fish, so as to prevent the quality degradation of offspring caused by inbreeding. Broken fin, crippled, deformed tropical fish are not used as parent fish. 2. The preparation of the breeding tank: due to different parent fish species, the breeding tank is also different. General tropical fish that lay floating eggs
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Occurrence regularity and control points of copper green golden tortoise shell
Coleoptera, Coleoptera. It occurs in many apple orchards in our area. the hosts are apple, Hawthorn, begonia, pear, apricot, peach, plum, persimmon, walnut, grass poison and so on. First, the harm symptom of the tortoise shell is that the apple fruit tree suffers the most, and the adults feed on the leaves, which often cause a large area of young fruit tree leaves to be incomplete, and even the whole tree leaves are eaten up. Second, the law of occurrence (1) the copper green golden tortoise shell occurs one generation a year, and it is mature.
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