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Method one: Calculate the annual feeding amount, the monthly feeding amount, and the daily feeding amount based on the fish net weight gain and the feed coefficient. (1) Annual feeding amount. According to the fish net weight gain and the feed coefficient to calculate, that is, the net increase weight of fish stocking multiple feed coefficient. Fish net weight gain is usually 4 to 5. The feed ratio of the full-price compound feed is generally 2 to 2.5, and that of the mixed feed is 3 to 3.5. If the feed is used alternately, the use amount is calculated by the respective feed coefficient, and then the addition is the annual feed. the amount. (2) monthly feeding amount. The monthly feed allocation percentage for the current year. In general, 1% of the annual feeding amount will be fed in March, 4% of the annual feeding amount will be fed in April, 8% of the annual feeding amount will be fed in May, and 15% of the annual feeding amount will be added in June. 7 The monthly, August, and September months are all fed with 20% of the annual feeding amount. In October, 9% of the annual feeding amount is fed, and in November, 3% of the annual feeding amount is fed. (3) Daily feeding amount. According to the monthly feeding amount, it is arranged on the upper, middle and lower third trimesters. From March to August, 80% of the daily average of the monthly feeding amount in the first day of the month, the daily average in the middle of the month, and 120% of the daily average in the late days; from the beginning of September, the average daily feed amount is 120% is the daily average in the middle and 80% of the daily average in the late period.
Method two: Determine the daily feeding amount according to the number of fish ponds. When the water temperature is 15 to 20°C, the daily feeding amount is 1% to 3% of the fish's body weight; when the water temperature is more than 20°C, the daily feeding amount is 3% to 5% of the fish's body weight.
Method 3: Observe the feeding conditions of fish and determine the daily feeding amount. This method is easy to operate and simple. After the feed is fed, it usually takes 2 to 3 hours for the fish to eat, or 80% for the fish to eat. This method can also be used in combination with method two. That is, the method of calculating the amount of feeding on the same day according to method two. After feeding, according to the time for fish to eat and the state of fish leaving, it can be increased or decreased as appropriate to achieve the optimal feeding amount.
Accurately understanding the amount of feed fed is a guarantee of successful fish farming. It can not only make the fish eat well, but also does not cause feed wastage. It is not difficult for general fish farmers to understand the timing, quality, and fixed points in the feeding of “Four Dingâ€, but the concept of quantitative is rather vague. Now we will introduce several methods for determining the feed amount of pond fish feed for reference.