The presence of harmful chemical elements (Hg, Cd, Pb) in the stable environment for pig herds
1996
Raszyk, J. | Nezveda, K. | Docekalova, H. (Vyzkumny Ustav Veterinarniho Lekarstvi, Brno (Czech Republic)) | Salava, J. | Palac, J.
The presence of harmful chemical elements (Hg, Cd, Pb) in the stable environment for fattened pigs was compared in the Czech Republic in 1984 and 1994. These data were recorded for the year 1994 in comparison with 1984: 1. mercury content in feed mixtures for pigs decreased 102 times, cadmium content 8 times and lead content 6 times 2. mercury content in stable dust deposition decreased 27 times and cadmium content 6 times but lead content slightly increased, 3. mercury content in the bristles dropped 20 times cadmium content 5 times and lead content 10 times. In addition, the presence of Hg, Cd and Pb in pig manure and road dust was investigated. Road dust exhibited an increased lead concentration. After application to arable land, pig manure can be a vector of some amounts of heavy metals (Hg 0.003; Cd 0.024; Pb 0.518 mg/kg dry matter). Mercury and cadmium contents in the stable environment for fattened pigs in the last decade have shown a significant decrease.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Library of Antonin Svehla