Text | Figure: Central China Dai Mingming
Entering July, bulk fish farming in Central China has entered the peak period, but the author visited the farmer pond and found that there are still problems with the feed feeding of many fish ponds, and most of the fish ponds are currently seriously insufficient in daily feeding!
In view of the problems related to the daily feed feed rate in the high temperature period, I have the following suggestions for your reference.
(a)
The relationship between the daily feed rate of bulk fish feed and fish growth and feed ratio
The nutritional intake of fish can only grow when it meets the consumption of metabolism, which is what we think is long meat; Most fish can only be guaranteed to be lean when the daily feeding rate is 0.5%-0.8%, and the growth rate is fastest when the daily feeding rate exceeds the 4%-6% range.
Correspondingly, the relationship between the feed feed coefficient and the daily feeding rate derived from the above is as follows: the feed coefficient is quite high in the interval between the daily feeding rate is lower than 0.8% and higher than 6%. Under normal circumstances, when the daily feeding rate of the feed is maintained at 3.5%, the feed ratio is at the lowest level, that is, the optimal daily feeding rate.
(b)
From July to September, the normal daily feeding rate of different breeding species is recommended
Different regions have different opinions on how much feed should be fed in each time period, and the appropriate daily feeding rate range for different breeding species during the high temperature period is given based on the daily feeding rate of each region in previous years:
☆ Daily feeding rate: How many catties of feed are fed per day for 100 catties of fish in the pond? The daily feeding rate of 3% is to feed 3 catties of feed per 100 catties of fish per pond.
The daily feed rate is not static, farmers and friends should choose the most suitable feed amount on the day according to the feeding situation of the fish on the day of feeding, combined with weather changes, and generally do not deviate from the minimum daily feeding rate and the highest daily feeding rate too far from the above table.
In order to ensure that the feed can be fed in high temperature weather, that is, to ensure the number of effective feeding days, it is recommended that the majority of farmers and friends are equipped with a good aerator, and the power of the aerator per mu should be high enough, and the cost of using electricity to solve the breeding problem in the breeding process is the lowest.
(c)
From July to September, the proportion of feed per meal is recommended
According to the different breeding areas, the number of daily feeding meals for each farmer is different during the high temperature, most of the bosses feed 3-4 meals a day, and some bosses can feed 6 meals a day.
➣ Suggested feeding time per meal:
➣ Taking 10,000 catties of fish in the pond as an example, the daily feeding rate is 3%, and the recommended daily feeding amount of feed is as follows:
(iv)
Precautions for feed feeding from July to September
- Do not add too fast, the feeding needs to be gradual, not a step in place;
- Do not blindly feed, can not fork feeding, feed daily feed rate can not seriously exceed the standard;
- It cannot be added to a meal, and the weight of the daily feed should be allocated to each meal according to the proportion;
- We can not ignore the feeding of intercultured fish, and the feed should take into account the feeding situation of interbreeding crucian carp, herring, yellow catfish, etc.;
- The feeding span time should not be too large, and it is recommended to increase the feed amount to the normal level within a week;
- The feed on the day can not exceed 30% of the total amount of feeding on the previous day, that is, it cannot exceed 1.3 times of the feed of the previous day.
(5)
The correct way to feed in July-September
01 When the daily feeding rate of pellets < 1.5%.
After the rainy season, when the daily feeding rate of pellets is less than 1.5%, the daily feeding rate is increased to 1.5% within 2 days. A daily feed rate of 1.5% of pellets is not a load for conventional fish and can be added in a short period of time.
When the daily feeding rate of extruded material is less than 1%, increase the daily feeding rate to 1% within 2 days; The daily feeding rate of 1% of the extruded feed is not a load for conventional fish, and can be added in a short period of time.
02 When the daily feeding rate of pellets > 1.5%.
When the daily feeding rate of pellets is greater than 1.5%, the correct way to add to the normal daily feeding rate of 3%: 20% per day for the first three days, after two days of stability, and 3% for the last two days, it takes a week to feed in place.
➣ Take the daily feeding rate of 10,000 catties of eating fish from 1.5% to 3% as an example, and the daily feeding amount is increased from 150 catties to 300 catties:
When the daily feeding rate of extruded material is greater than 1%, the correct way to add to the normal daily feeding rate of 2%: 20% per day for the first three days, after two days of stability, and 3% for the last two days, it also takes a week to feed in place.
➣ Take the daily feeding rate of 10,000 catties of eating fish from 1.5% to 3% as an example, and the daily feeding amount is increased from 150 catties to 300 catties:
03 Conventional feeding operation
Because with the feeding of feed, the fish in the pond has been growing, so the daily feeding amount of the breeding pond in the high temperature period is not constant, it needs to be fed once a week, and it is necessary to add about 10% of the daily feeding amount of feed for a week.
- Take 10,000 catties of fish in the pond, according to the daily feeding rate of 3% as an example: feeding for a week, feeding 2,100 catties of feed, with an average of 1,000 catties per ton, for example, eating fish has exceeded 11,000 catties, and we still need to feed 330 catties of feed according to the daily feeding rate of 3%.
suggestion
In the feed feeding process, the feed feeding weight is accurately weighed every day with a scale, so as to achieve accurate feeding.
END
This article is the original of Haida Agriculture and Animal Husbandry, and it is forbidden to reprint without authorization! Article submission, reprint authorization, welcome to send an email to: [email protected]