martes, 4 de marzo de 2008

Probiotics: Live Organisms as Feed Supplements to Fight Salmonella

Probiotic bacteria should replace antibiotics in feed suplements
A new way to reduce Salmonella in poultry before they go to the poultry processing plant: use probiotics instead of antibiotics for treatment of the birds. It’s been a complex path getting to this point, and the procedure still raises some other issues to be considered. Still, the development offers a way that makes it easy on poultry growers and enhances food safety. It’s a matter of incorporating the probiotic into either the water or the feed for the poultry, explained Billy Hargis, director of the Poultry Health Research Laboratory at the University of Arkansas System’s Division of Agriculture. Results from experiments show that administration of the probiotic can reduce Salmonella in either meat-type chicken houses or turkey houses before being transported to the processing plant and reduce the risk of cross contamination among turkeys at the plant. “It’s not a chemical. It’s not a drug,” explained Hargis, who has pursued the research for the Food Safety Consortium. “These (probiotics) are live organisms.” “Another advantage is that we’re talking about organisms that can be produced very cheaply, which keeps the costs of these treatments very low,” Hargis said. That’s partly because the defined cultures from which the probiotics come are tolerant of oxygen, avoiding the high cost of fermenting undefined cultures that can’t grow in the presence of oxygen. Antibiotics have long been popular among poultry producers seeking to keep their birds healthy and to promote the birds’ growth. Pathogenic bacteria that are harmful to humans are increasing the bacteria’s ability to resist antibiotics, but pathogens that can cause animal disease have not built up as much resistance. “The risk factor for antibiotic resistance from food-producing animals is exceedingly low,” Hargis said. But the issue of antibiotic resistance is still becoming a driving force that’s making antibiotics usage for animals less popular, and poultry producers are under pressure to use fewer antibiotics. Alternatives are necessary. Probiotics enter the picture as live organisms that serve as microbial feed supplements for animals to improve their intestinal microbial balance. Hargis’ research group has taken the lactobacillus probiotic, a form of milk bacteria found in the bird, and added it to poultry water or feed. “We can add probiotics to the feed even before pelleting,” Hargis said. “The beneficial bacteria in the feed have tremendous advantages because now we can talk about continuous administration over time. It makes it very simple. It just comes in with the feed.” Replacing antibiotics with probiotics has definite advantages, but there is some tradeoff. Hargis noted that although animal foods won’t be populated with antibiotic-resistant bacteria, the lack of antibiotics means producers will need to find other ways to promote their birds’ growth. That means giving more feed to the birds to accomplish the task.
The advantages offered by probiotics indicate where the future may be. Hargis cited the new probiotic candidate’s stability even in the presence of the heat generated when feed is being turned into pellets and its overall environmental stability. The major plus is its usage in the feed itself, which makes it part of an ongoing process.
“We’re using it to prevent problems continuously as opposed to treating problems when they occur,” Hargis said.
Source of Article:
Aporte: Guillermo Figueroa

1 comentario:

Aashessh Gupta dijo...

nice blog !! i was looking for blogs related of feed supplements . then i found this blog, this is really nice and interested to read.