Comparative Evaluation of GIFT On-farm. On-farm trials to cmpare the growth performance of GIFT euth that of locally farmed tilapia strains were conducted in diverse agroecological zones in all five DEGITA participating countries. The farming methods used includedponds and cages with different levels of inputs (fertilizers and feeds) Again, the results were very variable among and within countries. For exemple, in farm pounds in Viet Nam and Bangladesh, GIFT gave 33% and 78% higher yield, respectively, than those of local tilapia strains. In cage farming in the PCR and the Phillippines, GIFT gave 25% and 54% higher yields, respectively, than those of local strains (footnote 29).