The study recently published in Frontiers in Veterinary Science demonstrates that resin acids of Progres® do not accumulate in edible parts of broiler chicken, and thus pose no safety concerns to the consumers. Although the likelihood of seeing any problems with Progres® was very low, we prefer to be absolutely sure. Now we know, that a serving of broiler dish prepared from a broiler fed with Progres® at 3000 g/ton (a four-fold of the recommended dose!) would contain max. 100 µg of resin acids. That is one-thousandth of the dose shown to be harmless in rodents.
Read the blog by Dr. Hannele Kettunen surveying our scientific research on Progres® safety in poultry and milk production.
Dr. Hannele Kettunen, Hankkija’s R&D Manager: «The study with broiler chickens was conducted by Alimetrics Ltd. In the experiment, commercial-type wheat-soy diets were either fed as such (control treatment) or amended with Progres® at 750 and 3000 g/t. The diets were fed to Ross 308 broiler chickens from the day of hatch to the age of five weeks. Each treatment was replicated 11 times. On the final day of the study, samples were collected from jejunal tissue, breast muscle, abdominal fat, blood, liver, bile and digesta along the intestinal tract.
The study showed that although 75% of the resin acids became absorbed from the intestine of broiler chicken, most of it was recycled to the intestine via liver and bile, and voided via feces».
In numerous scientific trials and from the field experience Progres® has been proven an absolutely safe product with and excellent payback ratio. But we keep developing our flagship feed innovation – this recently published article is another brick in the already very solid base of scientific evidence. Published Progres® related articles below are only the top of the iceberg:
Aguirre M. et al. (2019) In-feed resin acids reduce matrix metalloproteinase activity in the ileal mucosa of healthy broilers without inducing major effects on the gut microbiota. In: Veterinary Research 50: 15.
Apajalahti J. et al. (2020) Distribution, metabolism, and recovery of resin acids in the intestine and tissues of broiler chickens in a feeding trial with tall oil fatty acid-supplemented diets. In: Frontiers in Veterinary Science.
Hasan S. et al. (2018) Late gestation diet supplementation of resin acid-enriched composition increases sow colostrum IgG content, piglet colostrum intake and modulates sow gut microbiota. In: Animal.
Kettunen H. et al. (2017) Dietary resin acid composition as a performance enhancer for broiler chickens. In: Journal of Applied Animal Nutrition 5: 1–8.
Kettunen H. et al. (2015) Natural resin acid-enriched composition as a modulator of intestinal microbiota and performance enhancer in broiler chicken. In: Journal of Applied Animal Nutrition 3: 1–9.
Roy K. et al. (2018) In vitro inhibition studies of natural resin acids to Clostridium perfringens, Staphylococcus aureus and Escherichia coli O149. In: Journal of Applied Animal Nutrition 5: 1–5.
Vienola K. et al. (2018) Tall oil fatty acid inclusion in the diet improves performance and increases ileal density of lactobacilli in broiler chickens. In: British Poultry Science. 59: 349–355.