Investigation on effect of dietary organic acids on performance and intestinal microflora of broiler chickens
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 6, Issue 11
Abstract
This study carried out to determine the effects of different level of organic acids and Salgard supplement on microbial population and performance of broilers. The plan was completely random including 7 treatments (0‚ 0.3? and 0.5? formic acid‚ 0.3? and 0.5? Propionic acid‚ 0.3? and 0.5?Salgard in diet) and three replicates that totally includes 21 tests. Ten specimen applied in each and totally 210 Cobb broilers were used. Weighing performed weekly. At the end of rearing period(42 days)‚ one broiler randomly selected from each pen and killed. Microbial investigation‚ body characteristics and pH rate analyzed in the laboratory using duodenum. In the laboratory two method of drop counting and point counting used in suitable bacteriologic cultures. Data analysis carried out by SAS using G.L.M and the means compared by Duncan‚s test. Applying organic acids leads to significant change in aerobic bacteria and Coliform population‚ Escherichia coli and Lactobacil in cecum(P<0.05). Also‚ there is no significant difference in population of the bacteria which produce lactic acids in treatments(P<0.05). But‚ there is significant difference in mean weight increase in(initial and end of rearing period) which are as follow: mean weight increase during rearing period‚ daily mean weight increase‚ mean consumed feed during growth period‚ mean consumed daily feed during(third and sixth weeks)‚ feed conversion rate in 7‚ 35 and 42 days of rearing‚ feed conversion rate in7‚ 28‚ 35 and 42 days of period‚ weight of body prepared for consumption‚ weight of breast‚ weight of wing‚ weight of thighs‚ weight of liver‚ percent of cecum‚ percent of thighs‚ percent of breast and decrease of pH in duodenum(P<0.05). The results of the recent study shows that adding organic acids specially Salgard supplement 0.5? in the diet effect on performance of broilers and the total number of Lactobacil bacteria and coliforms‚ Escherichia coli and whole aerobic bacteria in cecum content.
Authors and Affiliations
Rouzbeh Fathi Saddeiy| Master of Breeding Science, Islamic Azad University, Rasht Unit, Rasht, Iran, email:rouzbeh.fathi@yahoo.com
Keywords
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