Twenty four Bovine males representing three genotypes: Pure local "Baladi" (B), 1/4 Baladi 3/4 Abondance (BA×A) and 1/4 Baladi 3/4 Tarentaise (BT×T). Eight males in each genotype were subjected to evaluate their semen characteristics, reproductive tract development, growth rate, feed efficiency, some blood parameters, thermo-regulatory parameters and body dimensions at puberty and sexual maturity. BT×T bulls showed the best feed efficiency compared with those of BA×A and B bulls. Serum total protein, albumin, globulin, glucose, cholesterol, T₃ and testosterone in BT×T had the highest values, followed by BA×A, while B bulls had the lowest ones, either at puberty or sexual maturity. Total weight gain and daily weight gain were significantly higher in BT×T compared to BA×A and B bulls. Thermo-regulatory parameters and body dimensions were affected by the different genotypes. Crossbreeds bulls (BT×T and BA×A) reached age of puberty, sexual maturity and slaughter weight (60 days post sexual maturity) earlier than Baladi bulls. Semen characteristics among the three genotypes were highly significant (P<0.0001) especially of BT×T followed by BA×A compared to B bulls. Testes parameters of BT×T bulls had the highest values for all studied parameters, followed by BA×A, while those of B were the lowest. Sperm production per gram of testicular tissue was also significantly higher in BT×T bulls than the other two genotypes. This study indicated that the superiority of crossbreed bulls especially; BT×T in growth, reproductive performance and feed efficiency compared with pure Baladi bulls.