Liquid feed fermented with a Lactobacillus strain with probiotic properties, reduces susceptibility of broiler chickens to Salmonella enterica typhimurium Sal 1344 NALr
Published:January 12, 2018
By:S.E. Savvidou 1, J.D. Beal 1, R.M. La Ragione 2, P.H. Brooks 1.
/ 1 University of Plymouth, School of Biological Sciences, Plymouth, Devon, PL4 8AA, United Kingdom; 2 Veterinary Laboratory Agency (VLA), New Haw, Addlestone, Surrey, KT15 3NB, United Kingdom.
This study investigated the potential of fermented liquid feed (FLF) to reduce Salmonella carriage in broiler chickens. In this experiment, a strain identified as Lactobacillus Salivarius ss Salivarius NCIMB 41606 (Lb salivarius) that had been isolated from chicken gut and had been selected for its fermentation and potential probiotic properties, was assessed for its efficacy in reducing the shedding of Salmonella enterica typhimurium Sal 1344 nalr in broilers. A total of 68 hatchlings were randomly divided into four groups. One group was provided with a daily dose of 107 cfu/ml of Lb. salivarius, delivered via drinking water from day one of age. The second group was provided with 109 cfu/gr of Lb salivarius delivered in fermented liquid feed (FLF). The third group (ALF) was provided with feed acidified with 30.3 ml of lactic acid/ kg of wet feed from day one of age and the last group was the control without any addition of Lb salivarius or acid. Birds fed FLF were free of Salmonella on 51% of days compared with 23% for birds fed ALF (P<0.05) and 19% for birds provided with Lb salivarius via water, and 8% of Salmonella negative days in CON birds. FLF, produced using Lb salivarius, is suggested as an effective means of controlling S. typhimurium infection to poultry.
Presented at the 60th Annual Meeting of the European Association of Animal Production.
Hi, very interesting this discussion. I would like to know if it was a yeast now and how could a yeast bring the ph down or was it a lactobacillus, so which one? We are using lactobacillus for fermentation and have optimized some range. In pigs, it is more and more used, and in poultry, it is starting due to several positive effects. If possible I would like to get the data as well. Maybe, there could be some kind of exchange as well.
Hi Peter Brooks et al
Interesting approach, instead of only microorganisms, feeding beneficial microbial metabolites and digested food fragments could really enhance broiler performances. But most broiler starter/booster feed available in the market (in some countries) contain antibiotics in low doses (as growth promoters) and hence this approach may not work during the early stage of growth.
Dear Sir, Since January 2017 for microbiological criteria, the entire family of Enterobacteriaceae is included. Previously only certain genera of Enterobacteriaceae like e.Coli/salmonella and other pathogens were included under microbiological criteria of food safety. Since January 2017 entire family members of Enterobacteriaceae were included on the plea that enterobacteria carry antibiotic resistant genes which are easily transferred to human pathogen. Antibiotic resistance is assuming a global issue. Certain lacto bacilli al so carry antibiotic resistant genes which are transferred to human pathogen. Before using lactobacilli as prebiotic or probiotic it is essential to screen the lactobacilli for antibiotic resistance. Further, now low pathogenic avian influenza is endemic in India due to exacerbation by bacterial and viral agents. The main problem with poultry feed is microbial contamination of feed and feed ingredients. European food safety authority as early as 2004 resorted to use of formalin for decontamination of feed. After feed decontamination use of phytobiotics - garlic 10 kg per tonne of feed will solve the problem of salmonella as well as lpai. For biosecurity, it is essential to use only food grade chemosterilants such as chlorine dioxide or peracetic acid.
HERE SELECTION OF LACTO BACILLI STRAIN IS CRITICAL SINCE CERTAIN LACTO BACILLI CARRY ARNTIBIOTIC RESISTANT GENES WHICH ARE EASILY TRANSFERED TO HUMAN PATHOGEN.PLEASE
REFER COMMUNITY REGISTER OF FEED ADDITIVES FOR APPROVED LACTO BACILLI
A.T.VENUGOPALAN
20-1-18
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