Ugotavljali smo osteoartrotične spremembe v tarzalnem sklepu, tarzalni burzitis, peritarzitis in asimetrijo parkljev pri 175 prašičih pitancih, ki so imeli podaljšano pitanje (starost okoli 250 dni), treh genotipov (čistopasemski landrace- 11, križanci med landrace svinjo in large white merjascem-12 in križanci med svinjo 12 in duroc merjascem-123) vhlevljenih individualno na mrežastem podu ali skupinsko na betonskih rešetkah. Individualno vhlevljeni prašiči na
mrežastem podu so imeli značilno (P<0.001) povečano stopnjo osteoartrotičnih sprememb na sklepnih površinah koščic os tarsale tertium (T3) os tarsale quartum (T4), os metatarsale tertium (MT3) in os metatarsale quartum (MT4) ter značilno (P<0.001) povečano stopnjo peritarzitisa, kot skupinsko vhlevljeni prašiči na betonskih rešetkah. Individualno vhlevljeni prašiči so hitreje priraščali in so bili pri podobni starosti ob zakolu težji (P<0.001). Vpliv genotipa se kaže le pri značilno manjši (P<0.001) asimetriji parkljev križancev 12 v primerjavi s prašiči linij 11 in 123, ter pri značilno manjšem obsegu degenerativnih sprememb na T3 in Mt3 pri individualno vhlevljenih križancih 123.Degenerative changes of joints due to osteoarthrosis in tarsal joint, peritarsitis, tarsal bursitis and asymmetry of claws was studied on legs of 175 commercial pigs, with prolonged fattening (250 days of age) of three genotypes (landrace pigs-11, crosses between landrace females and large white males-12, crosses between female 12 and duroc male- 123) housed either individually on the zincifi ed metal slatted fl oor or in groups of 8-9 pigs on the concrete slatted
fl oor. Degenerative changes due to osteoarthrosis (OATD) in small joints of the hock - os tarsale tertium (T3), os tarsale quartum (T4), os metatarsale tertium (Mt3) and os metatarsale quatrum (Mt4) and due to the peritarsitis were signifi cantly more important in pigs housed individually (P<0.001). Individually housed pigs grew faster and were signifi cantly heavier for the similar slaughter age (P<0.001). The effect of genotype was only minor; the crosses 12
had lesser asymmetry of claws (P<0.001) than pigs 11 or 123, whereas crosses 123 had signifi cantly (P<0.005) less pronounced degenerative changes due to osteoarthrosis on Mt3 and T3
