1. When farmers purchase the trout fingerlings, they should correctly distinguish the pros and cons of the fingerlings according to the biological characteristics of the main trout culture species and avoid being deceived.
Second, the design of a good stocking stocking density
In order to reduce the cost of farming, it is best to cultivate large-scale fish species on their own. The use of ponds to cultivate carp fingerlings, stocking squid from 0,800 to 120,200 catfish per acre, can achieve the purpose of developing 50-60 grams of specifications.
When carp adult fish culture is conducted, when the average size of the fish species is 50-60 grams, the 1500-1800 tail of the carp species to be stocked per acre is the most ideal, and the commercial fish can be up to 350-400 grams in size.
Third, determine the collocation
To cultivate large-size catfish species, do not use grass carp and catfish. Instead, choose carp and catfish. The quantity should account for about 20% of the main carp and carp account for about 10% of carp. It is not too early to match the species' stocking time, especially if the fish is used too early to influence the domestication of the catfish.
Fourth, domestication of fingerlings
Squid is a fish living in the lower and middle layers of the water body. It mainly raises the fish ponds of the carp. After the domestication of the fish species, it can reduce feed costs and increase profits. It is relatively easy to domesticate squid during the cultivation of fish species. The domesticated fish species have a short time for catching and eating during adult culture and are easy to manage. Adding appropriate additives in the feed during domestication can shorten the acclimation time and increase the feeding area and quantity of squid. The density is large, the number of groups is large, and it is easy to acclimate. On the contrary, the percentage of long-term domestication and the tendency to catch up and snatch food is low. When the density has been determined to be unchangeable, the water level of the pond can be reduced. If the density is relatively increased, it will not only facilitate domestication, but also increase the pond water temperature and promote fish growth. With squid and squid species, they should be released after the main squid has not formed. The water during the domestication period should be "lean" and not "cloudy."
V. Feed particle size and feeding rate
The selection criteria for the size of feed for squid should be “small is not bigâ€. When the size of the common bream is below 10g/tail, the particle size of the feed is 0.50mm; when 10-30g/tail, 1mm is selected; 30-75g/tail is 1.50mm; 75-100g/tail is 2mm 150-300 g / tail when selected 2.40 mm; 300 g / tail over 3.20 mm.
Nuts are a group of cleistoses that have a hard skin and contain a single seed. It is the essence of plants, rich in nutrition, containing higher minerals, vitamins, oil and protein, eating more can promote growth and development, increase physical fitness. Common nuts include walnuts, peanuts, almonds, cashews, macadamia nuts, pistachio nuts and so on.
Nuts, Almonds,Walnuts,Pistachio nuts,Macadamia nuts
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