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Feeding Management of Adult Fish after White Dew
After the White Dew season, fish diseases gradually declined, and adult fish entered a period of vigorous growth. Proper feeding and management during this time are crucial for maximizing fish harvests.
First, timely feeding is essential. During this phase, water temperatures are ideal, metabolism is high, and fish have strong appetites. The general rule is to feed as much as possible when fish can eat. From late September to late October, grass feed should make up about 20% of the annual total feed, fine materials over 30%, and shellfish more than 40%. If there's a shortage of grass or shellfish, increase the amount of concentrate feed to ensure fish are well-fed, grow faster, and maintain good health.
Second, follow the "four determinants" of feeding: feed must be fresh and palatable, and feeding should be done at fixed times, locations, with consistent quality and quantity. Adjust the amount based on water conditions, weather, and fish behavior to ensure that fish eat well and efficiently utilize the feed.
Third, maintain clean and fresh water. With increased feeding and higher metabolic activity, waste accumulation can quickly degrade water quality. Effective measures should be taken, such as regularly adding fresh water and using oxygen aerators. The frequency and volume of water changes depend on the current water condition, and aeration should be turned on during sunny afternoons. This helps keep the pond water clear, cool, and rich in dissolved oxygen (above 5 mg/L), creating an optimal environment for fish growth.
Fourth, focus on daily management. Check the ponds three times a day—early morning, midday, and evening. If you notice fish floating at the surface or other unusual signs, take immediate action. Remove leftover feed and dead fish promptly to keep the pond clean. Also, maintain detailed records of pond management to track progress and improve breeding techniques over time.
By implementing these practices, fish farmers can significantly enhance productivity and ensure healthy, fast-growing fish throughout the season.