Abstract
Three strains of Heterobranchus longifilis were obtained from different ecological zones in Nigeria namely Nassarawa (NS); Kainji (KK) and Ajase Ipo, (SW). Six intra specific progenies were obtained from the cross of the three strains from the ecological zones, hatchability was highest (94.2%) in KK x KK (Kainji strains); while the intra specific cross between KK x NS had the highest (80.0%) hatchability. General observation of the study point to the fact that intra specific crosses involving SW and NS male have better survival rates.
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