English

Froner Casagrande Mariana,Alves Longo Flavio,Vedovelli Cardozo Marita,Vittori Juliano,Casteleti Beraldo Massoli Mariana,Boarini Livia,Pablo Schocken Iturrino Ruben

doi:10.5897/ajmr2014.7302

Abstract

Ingredients of animal origin are important for the animal feed industry because they contain significant amounts of nutrients, minerals, and vitamins. However, the use of these raw materials is a problem due to pathogenic bacterial contamination, especially Clostridium perfringens and Salmonella spp. One way to control contamination is the addition of chemical products during ingredient production. Thus, the objective of this study was to evaluate a formaldehyde and organic acid-based product (SALMEX®) for two periods of action after experimental challenge with C. perfringens in two poultry feed ingredients. Microbiological analyses to enumerate the pathogen were conducted using colony-forming units per mL (CFU/mL) after incubation on SPS agar at 37°C for 48 h in anaerobic jars using the GasPak® system. The results show that there were significant differences among the dosage treatments and ingredients. With respect to the action time of the product, there were no significant differences observed between 24 h and 5 days, but there was a reduction in bacterial count with doses above 3 kg/t. This reduction was greater in the five-day SALMEX® treatment when compared to the 24-hour period. Thus, we can conclude that a higher product dose and a longer incubation time leads to more efficient product action. Key words: Animal health, microbiology, nutrition, poultry industry, pathogen.

Highlights

Since the 1950s, the Brazilian poultry industry has undergone modernization, especially in the areas of genetics, animal management, nutrition, equipment and animal health, and has become highly productive (Tinôco, 2001)
With respect to the action time of the product, there were no significant differences observed between 24 h and 5 days, but there was a reduction in bacterial count with doses above 3 kg/t
We can conclude that a higher product dose and a longer incubation time leads to more efficient product action

Summary

Introduction

Since the 1950s, the Brazilian poultry industry has undergone modernization, especially in the areas of genetics, animal management, nutrition, equipment and animal health, and has become highly productive (Tinôco, 2001). Ingredients originating from animals are made from meat byproducts that are not fit for human consumption, such as bone, feathers and blood. Because these byproducts are rich in nutrients, minerals and vitamins, they are important for the production of animal feed (Costa et al, 2008). These ingredients are ideal environments for the proliferation of microorganisms, especially pathogens (Mazutti et al, 2008).

Objectives

Methods

Results