Albrecht et al found that, in the treatment of 1,440 piglets, 'Homoeopathic metaphylaxis is significantly effective compared with placebo and low dose antibiotic metaphylaxis for incidence of disease and rate of disease of the respiratory tract among the animals studied'.

Albrecht, H. et al. Homoeopathy versus Antibiotics in metaphylaxis of infectious disease: a clinical study in pig fattening and its significance to consumers. Alternative Therapies in Health and Medicine 1999. 5 (5); 64-8.

On the treatment of salmonella infection in poultry, Berchieri et al found that when 180 one-day-old chicks were given either an active homoeopathic medicine or control and then challenged with a culture of salmonella, 'Birds receiving active treatment were less likely to grow the strain of salmonella from cloacal swabs compared to control'.

Berchieri, A. Jr. et al. Evaluation of isopathic treatment of salmonella enteritidis in poultry. Homeopathy 2006; 95 (2); 94-7.

Bertani et al, treating oedema in 307 rats with either a homoeopathic medicine or control, found that homoeopathy significantly reduced oedema in comparison to controls.

Bertani, S, et al. Dual effects of homeopathic mineral complex on carrageenan-induced oedema in rats. The British Homoeopathic Journal 1999; 88 (3); 101-5.

From Cazin et al, six groups of 30 mice given radio-labelled arsenic were treated with various homoeopathic potencies of arsenic and the level of retention was compared to controls. All homoeopathic potencies of arsenic were found to have a greater effect on arsenic elimination than controls.

Cazin, J.C, et al. A study of the effect of decimal and centesimal dilutions of arsenic on the retention and mobilisation of arsenic in the rat. Human Toxicology 1987; 6 (4); 315-20.

From Datta et al, the authors found that pre-and post-feeding of homeopathically prepared arsenicum album 30C and 200C to mice exposed to arsenic trioxide reduced the genotoxic effects (chromosome aberrations, micronucleated erythrocytes and sperm head anomaly) of arsenic when compared to controls.

Datta, S et al. Efficacy of a potentized homoeopathic drug (Arsenicum album-30) in reducing genotoxic effects produced by arsenic trioxide in mice; comparative studies of pre-, post-and combined pre-and post-oral administration of comparative efficacy of two microdoses. Complementary Therapies in Medicine 1999 June; 7 (2); 62-75.