The influence of presence of cadmium and arsenic in feedmeal on production and reproduction traits of goats

Abstract

Animals require microelements in small quantities, and they play a role in virtually all physiological and biochemical processes. The role of microelements is important role from bone structure to maintaining the structure of proteins and lipids. Microelements are provided to animals in food, by special supplementation (premixes), or in water. In addition to essential minerals, which are regularly used in goat nutrition, there are 10 other elements present in traces (mg/kg or ppm) which are also indispensable for the goat's organism, as follows: Fe, J, Cu, Zn, Mn, Co, Mo, Se, Cr, F. In addition to these, following elements have also been identified in goats' tissues: Al, B, Ge, Cd, As, Pb, Hg, Ru, and Nb, however their significance for the organism of goats has still not been established. Their lack in goat nutrition may to a large extent contribute to lower yields and bad health.Mikroelementi su zivotinjama potrebni u malim kolicinama i ucestvuju u skoro svim fizioloskim i biohemijskim procesima. Pocev od strukture kostiju pa do odrzavanja strukture proteina i lipida, mikroelementi igraju vaznu ulogu. Obezbedjenje zivotinja sa mikroelementima obavlja se putem hrane, posebnim dodavanjem (putem predsmesa) ili putem vode. U intenzivnoj proizvodnji njihovo dodavanje je obavezno, jer se samo tako mogu obezbediti u dovoljnim kolicinama za optimalno zdravstveno stanje i proizvodne rezultate. Osim esencijalnih minerala, koji se redovno koriste u ishrani koza, postoji jos 10 elemenata prisutnih u tragovima (mg/kg ili ppm) koji su takodje, neophodni za organizam koza, a to su: Fe, J, Cu, Zn, Mn, Co, Mo, Se, Cr, F. Pored navedenih, u tkivima koza identifikovani su jos i: Al, B, Ge, Cd, As, Pb, Hg, Ru, i Nb, za koje jos nije utvrdjeno u kojoj su meri neophodni u organizmu koza. Njihov nedostatak u ishrani koza u velikoj meri moze doprineti nizoj proizvodnji i losem zdravstvenom stanju.