“In the absence of anti-blackhead drugs, I strongly recommend the inclusion of Herban for all poultry, specifically for free range and organic systems”.
Dr Tony Marangos International Nutrition Consultant., Nutrition Solutions Ltd (UK), Burnham House, Shawford, Winchester.
I dealt with a case concerning an outbreak of diarrhoea in Turkeys. This particular unit bought in turkeys at the age of 6 weeks. There was a report of a drop in food consumption over the next 10-14 days together with diarrhoea and increased mortality. It was further reported that this type of problem had been seen on a number of occasions in the past and on two of these occasions chlortetracycline had been prescribed following veterinary consultation. On a further occasion no treatment was given. Most birds lost weight and this delayed their subsequent final slaughter date as a result. In each case the birds seem to recover from the diarrhoea after about 14-21 days on the unit.
On this latest occasion I examined some of the live turkeys and then submitted them for post mortem examination. Frothy yellow enteritis was seen and large numbers of Hexamita (Spironucleus) sp. were seen on microscopy of cloacal contents. No other abnormality was found in these birds.
Since no licensed treatment for this protozoa infection existed and I had noticed a positive benefit with the use of Herban Liquid in pheasants, a course of treatment was started. This produced an improvement whilst the birds were on the water medication at a rate of 0.3ml per litre. Once the medication was withdrawn a slight deterioration was noted with the signs of diarrhoea returning. Repeat water medication at 0.5ml per litre was started and now has been followed by in-feed medication at a rate of 2kg/tonne Herban.
This treatment regime has been more successful and at this time no further complications have arisen.
Mr Ian Cameron B.V.M.S., M.R.C.V.S. , Manor Court Veterinary Centre, Tarvin, Chester.
Oregano (a herb related to marjoram) has been used as a food flavouring for centuries. It is also claimed that oregano has some medicinal benefits, particularly for the gastro-intestinal tract. This may be useful in poultry production, where the constant concern over the uses of antibiotics in poultry feed has stimulated the search for alternatives. Oregano may offer potential benefit as one of these alternatives (1) There is some evidence that oregano essential oil may modify the gut flora of broilers (E.coli in particular) (2) and in vitro tests suggest a beneficial effect against Salmonella typhimurium (3, 4). In one in vivo trial, there was some evidence that Inclusion of oregano essential oil in broiler grower diets significantly increased body weight gain and improved feed conversion (5).
Dr Graham Scott BSc PhD, Senior Lecturer in Poultry. , Harper Adams University, Newport, Shropshire, UK.
Griggs, J.P. and Jacob, J.P. 2005. Alternatives to Antibiotics for Organic Poultry Production. J. Appl. Poult. Res. 14:750–756
Friedman, M., et al.. 2002. Bactericidal activities of plant essential oils and some of their isolated constituents against Campylobacter jejuni, Escherichia coli, Listeria monocytogenes, and Salmonella enterica. J. Food Prot. 65:1545–1560.
Helander, I. et al..1998. Characterization of the action of selected essential oil components on gram-negative bacteria. J. Agric. Food Chem. 46:3590–3595.
Kim, J. et al. 1995. Antibacterial activity of some essential oil components against five foodborne pathogens. J. Agric. Food Chem. 43:2839–2845.
5 Amir, R, et al.. 2011 Effect of dietary oregano (Origanum vulgare L.) essential oil on growth performance, cecal microflora and serum antioxidant activity of broiler chickens. African Journal of Biotechnology Vol. 10(32), pp. 6177-6183