Poultry and livestock are also organisms, that is, an organic system. The internal cause plays a major role, that is, the health of the body is the most important. The use of external factors such as additives can only cure the symptoms, and it also depends on its own regulating function.
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In the current environment, the primary reason for using potassium diformate is its safety and antibacterial effect. The function of potassium diformate feed additive is mainly based on a simple and unique molecular structure. The raw materials for production of potassium formate and potassium formate are naturally present in nature or in the intestine of pigs. Non-dissociated formic acid can pass through the bacterial cell wall and dissociate in the cell When the pH value decreases, the formate anion breaks down bacterial cell wall proteins outside the cell wall, exerting bactericidal and bacteriostatic effects, such as E. coli and Salmonella, reducing the amount of nitrogen and phosphorus excreted by pathogenic bacteria and animals, effectively purifying animals Growing environment. It eventually decomposes into carbon dioxide and water and is completely biodegradable.
Potassium diformate is not only strongly acidic, but also slowly released in the digestive tract, and has high buffering capacity, which can avoid excessive fluctuations in the acidity of the gastrointestinal tract of animals. In addition, 85% potassium diformate passes through the stomach and enters the small intestine in a complete form. The release of potassium ions can also improve the utilization of lysine. The unique antimicrobial function is based on the combined effect of formic acid and formate. Formic acid is the most acidic and has a strong antimicrobial effect.
Promote the growth and reproduction of normal microbial flora in the intestine of animals, and inhibit the reproduction of pathogenic bacteria. Its value lies in adjusting the function of the intestine. The purpose of using potassium diformate is to promote the digestion and absorption of nutrients, improve animal immunity, and improve animal health. And improve feed conversion efficiency.
Feed additive potassium diformate can effectively maintain the health of the body in order to exert the production performance of poultry to a greater extent. This requires comprehensive efforts from the aspects of rationally formulating feed, feed additives, strengthening breeding management, and improving the breeding environment. In the process of poultry growth, no matter what kind of feed and feed additives are used, whether imported or domestic products, these are not the most important key effects.
Aquaculture production has increased rapidly within the last 30 years, with the vast majority of this production expansion occurring in Asia. Pangasius production was a major driver of this trend. Farming of Vietnamese pangasius (Pangasianodon hypophthalmus) has become increasingly attractive for the food industry worldwide.
According to the latest United Nations Food and Agriculture Organization data, Vietnam is currently the world’s leading pangasius producer, raising over 1.15 million metric tons (MT) in . Especially in Southeast Asia, farmers are looking for possibilities to economize pangasius culture.
However, high stocking densities and suboptimal water quality can impair fish health and growth performance. In the past, antibiotic growth promoters were often used to help overcome these limitations.
The routine use of antibiotics is a subject for much debate in the animal-farming and feed and food industries. Public opinion and regulatory authorities in most exporting countries often focus on the misuse of antibiotics in aquaculture, and public attention has shifted toward production methods. Consumers are increasingly turning to fish from sustainably managed sites, so alternatives to antibiotics are sought worldwide in a variety of forms.
The growth and health status of fish can be improved through the inclusion of feed additives in high-quality feeds. This strategy will likely be one of the main factors in the future success of pangasius farming in Southeast Asia.
Among these additives, acidifiers have been increasingly used in diets for many fish species over the last decade. Successful testing has been performed with salmon, rainbow trout, African catfish, European sea bass, Asian sea bass, milkfish, tilapia and shrimp.
Dietary acidifiers, including potassium diformate, have been used in pangasius culture for the last five years. The four acidifiers used include a blend consisting of ammonia formate and ammonia propionate, a mixture of free formic and propionic acid and their salts, sodium butyrate and potassium diformate (KDF).
KDF is one of the most frequently used dietary acidifiers in aquaculture, with reports on its use available from the Americas, Europe, Africa, Asia and Australia. In general, the results show significantly improved performance parameters in pangasius fed dietary acidifiers.
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One such trial demonstrated the effects of potassium diformate under commercial conditions in the Mekong Delta area. Added to a commercial catfish diet with 28.0percent crude protein at a 0.2 percent dosage, it was given to fish of approximately 20 grams initial body mass for 32 consecutive weeks.
More than 540,000 fish were stocked in one control pond and one treatment pond, each with a size of roughly 5,000 square meters. Thus, the stocking density was around 51 fish per cubic meter. During the trial, the water temperature in both ponds ranged 26 degrees to 33 degrees-C. The fish were kept and fed according to normal pond management.
At the end of the trial, a subsample of harvested fish indicated Pangasius in the treated group had greater weight gains than the fish in the negative control group – 1.03 versus 0.84 kg. Similarly, feed conversion, survival and protein efficiency were improved in the treated group (see Table 1). Due to the design of the study with no replicates, no statistics could be established.
The noted 8 percent improvement in the protein efficiency ratio, which has been previously reported in other fish species, may have been a direct impact of the acidifier on stomach pH. The main author reported last year that this direct impact on protein digestion is often overlooked.
A recent meta-analysis for potassium diformate found significantly improved weight gain and feed efficiency in tilapia at levels that can be already described as “growth promotion.” These results may not have stemmed only from the established antibacterial effects. Since acidi-fiers, if chosen properly, affect buffering capacity and/or stomach pH, they also have impacts on the digestion processes in the gastric tract – especially in the stomach. This view is supported by research from and by Spanish scientists Manuel Yufera and fellow researchers, who looked into the impacts of stomach pH and pepsin activity in marine fish.
In addition to the performance parameters, it was also interesting to investigate the additive’s impacts on protein efficiency, as despite its major influence on the sustainability of fish production, such data are still scarce.
In an attempt to quantify the impacts of KDF on pangasius production on average, the three available sets of data from two commercial trials and one laboratory study were evaluated.
The average impacts of 0.2 percent dietary KDF on production parameters against the negative control are displayed in Table 2.
All analyzed data showed numeric or significant improvements in the relevant performance parameters, particularly weight gain, survival and productivity. In addition, KDF showed comparable improvements in pangasius grow-out, as previously documented in tilapia in the main author’s meta-analysis. The protein efficiency was improved by an average of 4.4 percent.
This is partly supported with a significantly increased carcass yield in one of the studies. Furthermore, Ei Lin Ooi and co-workers reported in on the strong antimicrobial effects of a dietary acidifier against E. ictaluri in challenged fish.
It can be therefore be concluded that the use of dietary acidifiers, including potassium diformate, can be an effective option for sustainable aquaculture that results in improved health and performance of Pangasius.
(Editor’s Note: This article was originally published in the March/April print edition of the Global Aquaculture Advocate.)
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