By Christian Luckstadt

This compilation of papers from examine institutes and the global animal food offers an outline at the use of acidifiers in animal foodstuff and their important results on farm animals and aquaculture.

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Additional resources for Acidifiers in Animal Nutrition: A Guide to Feed Preservation and Acidification to Promote Animal Performance

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Metzler and R. Mosenthin 43 efficacy of formic acid and its salts as well as of fumaric and citric acid as well. (table 3; Partanen and Mroz, 1999). 39 Growth period Table 3. g. , 1993). 05) weaning piglet average daily gain and feed conversion ratio in comparison to the non- 44 Effects of organic acids on growth peformance and nutrient digestibilities in pigs acidified diet. Eckel et al. 2% formic acid resulted in improved daily weight gain (up to 22%) and feed conversion ratio (7%), although responses varied considerably between the different acids.

Table 1. 4 Acid Formula MM: molecular mass; ∞: soluble in all proportions; v: very soluble; s: sparingly soluble The most likely mechanisms, by which organic acids improve feed conversion ratio and animal health, include acidification, either of the feed or of the stomach, and/ or selective inhibition of pathogenic intestinal micro-organisms. They may also be B. Metzler and R. , 1993; table 2). In this review, special attention will be paid to the mode of action of organic acids in the gastrointestinal tract (GIT) of pigs, and to their impact on nutrient digestibility and growth performance.

Using the salts of organic acids instead can be a way around these issues, as they are tasteless and do not influence feed intake. g. , 1991). This is due to the conversion of lactose to lactic acid by lactobacilli in the stomach, which reduces gastric pH and reduces the benefits of supplemental organic acids (Easter, 1988). Differences in performance response may also be influenced by the buffering capacity of the diet, which is lowest in cereals and their by-products. , 1999, 2001). , 1992). , 1997).

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