Correlates of resistance to gastrointestinal nematode infection in Nigerian West African dwarf sheep

African dwarf (WAD) sheep. Methods: Thirty three sheep were randomly assigned to two groups, Aco n(nt=ro2l7. ) which were used for experimental infections, and B (n=6) which served as uninfected Each infected animal received weekly escalating infections with infective larvae (60% Haemonchus contortus (H. contortus) and 40% Trichostrongylus colubriformis (T. colubriformis)
fcooru n4 t w(FeEeCk)s,. wTohrem r beusprdoenns e(sW obf) , aplal ctkheed i ncfeellc tveodlu amned (PcoCnVt)r,o bl osdhye ewpe iwghetr e(B awsts),e assnedd b boyd yf aceocnadli teiogng score (BCS). On the basis of their individual faecal egg output, Lambs in group A with epg≤1 0w0i0th o enp agn yb estawmepenli ng day were classified as low faecal egg count (LFEC) phenotype (n = 16), those feacal egg count 1 000 and 10 000 as intermediate (n=5) and lambs with epg > 10 000 as high highly significan(tH FEC) phenotype (n=6). Results: The difference between the FEC classes was control and (P=0.001). The BCS and weight gained at the end of the experiment by the LFEC sheep was significantly higher (P≤0.05) than those of the intermediate and HmFeEasCu rpehse naontdy ptehse. tTrhioe roef was a significant and negative correlation between the parasitological indicated that the BCS, PCV and Bwt of sheep. Conclusions: The result of the study of FEC, weight African dwarf (WAD) sheep. Methods: Thirty three sheep were randomly assigned to two groups, Aco n(nt=ro2l7. ) which were used for experimental infections, and B (n=6) which served as uninfected Each infected animal received weekly escalating infections with infective larvae (60% Haemonchus contortus (H. contortus) and 40% Trichostrongylus colubriformis (T. colubriformis)
fcooru n4 t w(FeEeCk)s,. wTohrem r beusprdoenns e(sW obf) , aplal ctkheed i ncfeellc tveodlu amned (PcoCnVt)r,o bl osdhye ewpe iwghetr e(B awsts),e assnedd b boyd yf aceocnadli teiogng score (BCS). On the basis of their individual faecal egg output, Lambs in group A with epg≤1 0w0i0th o enp agn yb estawmepenli ng day were classified as low faecal egg count (LFEC) phenotype (n = 16), those feacal egg count 1 000 and 10 000 as intermediate (n=5) and lambs with epg > 10 000 as high highly significan(tH FEC) phenotype (n=6). Results: The difference between the FEC classes was control and (P=0.001). The BCS and weight gained at the end of the experiment by the LFEC sheep was significantly higher (P≤0.05) than those of the intermediate and HmFeEasCu rpehse naontdy ptehse. tTrhioe roef was a significant and negative correlation between the parasitological indicated that the BCS, PCV and Bwt of sheep. Conclusions: The result of the study of FEC, weight gain, P, P