Our greetings to Fenanza Team.
As a formulator in a catfish feed plant with an extrusion process (floating feed), we always try to analyze every problem that occurs. Lately, we often find broken catfish heads in the pond that use our feed. This issue usually triggered by a lack of vitamin C. In fact, we have added vitamin C in our feed formula according to the needs. However, in the last two months, the addition had no effective impact on the field. After re-analysis, we thought that the vitamin C we added underwent oxidation during the extrusion process. Dear Fenanza Team, please advise is there an effective vitamin C added to the feed and the vitamin kept up to the target animal despite the extrusion process? Thank you.
(Bapak Imam – Bogor)
Dear Bapak Imam,
We strongly agree with your opinion that one of the factors that led to the emergence of broken catfish heads cases is the lack of vitamin C in the body of catfish. Of course, the provision of vitamin C with appropriate levels will solve and prevent these problems. However, sometimes the heating process when making the feed damage the vitamin C contained, so the levels of vitamin C in the animal's body become inadequate.
As we all know, vitamin C is one of the important vitamins for fish. There have been many studies that prove the role and needs of vitamin C in fish, including:(1) to increase growth, (2) stress prevention, (3) improve reproduction, (4) increase immunity, (5) and function in collagen growth and accelerate wound healing. Unfortunately, fish are unable to synthesize their own vitamin C because there is no L-gluconolactone, substance for the final process of synthesis of vitamin C. Thus, fish only get vitamin C from the feed.
In the process of growth, vitamin C will help the formation of collagen, which is a major component in the bone matrix. The right amount of vitamin C will help the collagen tissue formed perfectly, strengthen the skeleton, and accelerate the wound healing process. The optimal formation of collagen is largely determined by the levels of vitamin C that absorbed by the body.
Vitamin C also plays a role to maintain the condition of the fish to stay healthy and optimal, but some conditions such as stress due to extreme weather can cause vitamin C levels in the body's tissues to decrease. Research shows that catfish with a length of 7-8 cm require vitamin C levels of 100 mg per kg of feed.
One of the vitamin C, which widely used in aquaculture feed is ANER C (L-Ascorbic acid-Polyphosphate). ANER C is vitamin C 35% that strongly bound in the form of polyphosphate compounds so protected from oxidation. ANER C is more stable and resistant to heat even in the temperature of the extruder machine 150 ° C, and there are no significant changes in the vitamin C content. Therefore, it can be said that ANER C is a product of vitamin C innovation for all animal feeds, especially aquatic feed that has bioavailability, water durability, resistance, and heat stability so it is suitable for extruded feed. The dosage of using ANER C that can be added to catfish feed is ± 400 g per tons feed.
ANER C is produced with the latest technology as a highly applicable product to be mixed directly into the feed or through a premix mixture. ANER C has very fine particle texture so gives the best results in homogeneity with raw material particles, which are generally fine flour for floating form feed production. The absorption or digestibility is very high up to > 90%.
Selection of the right vitamin C is very important to maintain healthy fish so that the performance of fish production is optimal. One important factor in the selection of vitamin C is based on the amount of endurance of the vitamin level, not only from the large concentration.
For more information on using of ANER C, please Bapak Imam to do not hesitate contact our team in the or visit us at www.fenanza.id. Thank you. Regards! (D)
Also published in TROBOS Magazine, October 2019