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Samli H. E., G. Sirci, J. Lorenzo Bermejo, F. Koc, A. Agma Okur, and N. Senkoylu

The present study investigated the relationship between addition of a commercial organic acid mixture to feed and feed microbiology. Feedstuffs’ composition and duration, temperature and humidity of feed storage were taken into account. The evaluated organic mixture contained formic acid, ammonium formate, propionic acid, ammonium propionate and inorganic phyllosilicate carrier. Microbiological changes were investigated in five types of feed using a 2×2×2 factorial design: organic acid addition (with/without), conditions of storage (228C and 57% relative humidity (HR)/418C and 65% HR) and storage duration (30/60 days). Supplementation of the organic acid mixture has positive effect on feed microbiology.

Samli H. E., G. Sirci, J. Lorenzo Bermejo, F. Koc, A. Agma Okur, and N. Senkoylu

The present study investigated the relationship between addition of a commercial organic acid mixture to feed and feed microbiology. Feedstuffs’ composition and duration, temperature and humidity of feed storage were taken into account. The evaluated organic mixture contained formic acid, ammonium formate, propionic acid, ammonium propionate and inorganic phyllosilicate carrier. Microbiological changes were investigated in five types of feed using a 2×2×2 factorial design: organic acid addition (with/without), conditions of storage (228C and 57% relative humidity (HR)/418C and 65% HR) and storage duration (30/60 days). Supplementation of the organic acid mixture has positive effect on feed microbiology.

Celik, K., I. E. Ersoy, A. Uzatici, and M. Erturk

The experiment described evaluated the effect of a commercial in-feed preparation (Biotronic® SE) involving a mixture of organic acids and salts on California turkey chicks performance. In these experiments, 1-d-old commercial white turkey poults were placed into battery brooders and were given turkey starter feed and water ad libitum. Biotronic ® SE had very small effect on the body weight gain (BWG) when included in the feed and live bird performance was not adversely affected by feeding up to 2.0%. from 0 to 60 days as based groups.

S. Cakir, M. Midilli, H. Erol, N. Simsek, M. Cinar, A. Altintas, H. Alp, L. Altintas, O. Cengiz, A. Antalyali

The aim of the present study was to compare the effects of Biomin®IMBO (combination of probiotic, prebiotic, phytogenic substances and cell wall fragments), of Biotronic (combination of formic and propionic acid based on an inorganic phyllosilicate carrier), of a combination of the Biomin® IMBO and Biotronic and of an antibiotic, avilamycin, as feed additives on the growth performance, several serum parameters and digestive villus height of quails. A total of 300 1-day-old Japanese quail chicks were randomly divided into 5 experimental groups with 4 replicates of 15 birds per replicate.

Nataliya Roth, Thomas Germ, Alfred Klimitsch, Renata Urbaityte, Sabine Nitsch

The inhibitory effect of acids on bacterial growth has long been used to preserve feed from spoilage. The use of organic acids as acidifiers for swine and poultry is also well known. In the present study the antimicrobial activities of formic and propionic acids and their combination were investigated in vitro on E.coli and Salmonella typhimurium, as these pathogens cause problems in animal production. The combination of acids was more effective than the effect of individual acids together. The reason of the synergy between organic acids blends can be the combination of acid with a low pKa, which reduces the pH of the environment of bacterial cells and acid with a high pKa and low molecular weight to ensure an antimicrobial effect inside the cell. The efficacy of the combination of formic and

Senkoylu N, Samli H. E., Kanter M., Agma A

Day-old male chicks were used to test the effects of a combination of formic and propionic acids (CFP) added to wheat- and barley-based diets on the performance and gut histomorphology of broilers. The CFP, containing formic and propionic acids based on an inorganic phyllo-silicate carrier, was added to starter and grower broiler diets of standard (NRC, 1994) or lower nutrient density (LND) using different levels of wheat and barley. Body weight gain (BWG) and feed conversion ratio (FCR) of broiler chicks were significantly (P < 0.001) improved by CFP supplementation at 21 days of age regardless of nutrient density (ND). However, at 35 days of age CFP addition significantly (P < 0.001) increased BWG and FCR. Proventriculus weight was also significantly affected by the dietary treatments.

N. Roth1, M. Rouault, R. Urbaityte, S. Masching, T. Applegate

The efficacy of an acidifier in the liquid form and the same composition on the special carrier Sequential Release Medium (SRM) (Biotronic SE forte) was investigated with broilers. Ross broilers (612) were divided into three treatment groups with 8 replicate pens per treatment. One group received 3 kg of the liquid formic and propionic acids per ton of feed, the second group was fed the same combination on SRM and the third group did not recive any feed additives. Chicks were kept in stressing conditions: reduced ventilation, recycled litter, and higher temperature (>29○C) from hatch to 24 days of age. Birds fed acids in a liquid form were numerically 3.2% heavier in comparison to the control group (P>0.05), while the group fed acids on SRM were 4.9% heavier than control (P<0.05).

Senkoylu, N., H. E. Samli, H. Akyürek, A. Agma

Day-old male 240 chicks of a Ross 308 strain were used to test the effects of an commercial organic acid (OA), Biotronic SE Forte, on broiler performance and gut histomorphology. OA preparation was supplemented at 3 g/kg level into starter and finisher broiler diets of standard (NRC, 1994) or lower (approximately 10%) nutrient density (ND). Thus, the experiment was set up according to 2x2 factorial design with 6 reps of 10 birds allocated in each. BWG and FCR of broiler chicks both at 21 and 35 d experimental periods were significantly (P<0.001) improved by OA supplementation regardless of the diets ND. OA supplementation increased BWG by approximately 20% in 21 and 12% in 35 d experimental periods. FCR value dropped from 1.276 to 1.105 and from 1.263 to 1.129 in the two group fed with standart or