Rosiles MR, Otero AE, Aguilar AM, Bautista OJ

Language: English/Spanish
References: 10
Page: 83-86
PDF size: 360.14 Kb.

ABSTRACT

In order to complete the objective of this study, twenty commercial samples of a product called "carnaza", a leather made toy for dogs, were collected in the valley of Mexico, and analysed for toxic and essential mineral elements. Samples were alcali and acid wet digested for organic material and measured by atomic absorption spectrometry for each element. These analyses included Cr, Pb, Cd, Ti, Ni, Fe, Cu and Zn contents. Alcali-and acid sample preparations were both measured independently, and summarised later for total amount of mineral content in each sample. Mineral element mean concentration was as follows: Cr, 104; Pb, 25; Cd, 16; Ti, 4378 and Ni, 7.9 ppm. These concentrations were over the maximum permissible levels in food allowed by Mexican regulations. Fe was higher, but Cu and Zn were lower than the nutritional needs for dogs. It is also concluded that alcali digestion for leather is faster, but mineral elements are not as soluble in an acid digestion. Medium level correlation was found between acid and alcali digestive concentration for Cr, Pb, Ti and Fe. It was also found that toxic mineral elements were not high enough to cause an acute toxicosis, but were at such level to be considered as a risk, once they are eaten by dogs.

REFERENCES

1. Alcázar, C.P.A., Rosiles, M.R. y Fuentes, H.V.O.: Concentraciones de plomo en encéfalo, riñón y pelo de perros del D.F. Vet. Méx., 19:217-220 (1988).

2. Estrada, R.J.L., Rosiles, M.R. y Rivero, M.V.: Concentraciones de macro y microminerales en alimento comercial de la Cd. de México para perros. Vet,. Méx., 19: 329-334 (1988).

3. Fabian, F. y Rosiles, M.R. Alteraciones de los parámetros productivos por consumo de cromo aniónico-hexavalente en gallinas de postura. Vet. Méx., 13: 71-78 (1982).

4. García, E.R.M., Rosiles, M.R. y Brizio, R.E.: Informe de un caso de intoxicación por plomo en un perro. Vet. Méx., 17: 31-34 (1986).

5. National Research Council: Nutrient Requirements of Dogs. National Academy, Washington, D.C., 1985.

6. Osweiler, G.D., Carson, T.L., Buck, W.B. and Gelder van, G.A.: Clinical and Diagnostic Veterinary Toxicology. Kendall/Hunl, Dubuque, Iowa, 1985.

7. Rosiles, M.R. y González, E.A.: Concentración de plomo sanguíneo en perros clínicamente sanos. Vet. Méx., 9:3-7 (1978).

8. Salinas, M.J.M y Rosiles, M.R.: Análisis comparativo de los niveles de plomo en cabello de trabajadores de talleres mecánicos y pelo de sus perros. Vet. Méx., 26:369-373 (1995).

9. World Health Organization: Titanium; sources and uses Environ. Health Criteria, 24:168 (1982).

10. Zeng-L., Zhengu, Z.R. and Zhangu, S.Q.: Pathogenic effects of titanium dioxide dust on the lung of dogs - a histopathological and ultrastructural study. Hua-Hsi-i-Ko-Ta-Hsueh-Hsueh-Pao, 20:88-91 (1989).