This study was conducted at Agragof goat improvement station, IPA Agriculture Research Center to study the effect of genetic group and age of bucks on some physical and biochemical of blood for a period from March to June 2002. Forty three bucks from a different genetic groups, which including 16 local, 11 crossbred( Local X Shami) and 16 crossbred ( Sannan X Local), also males were dividing to age, young bucks(8-12 month) and an older one (12–17 month) to study the effect of age on some blood parameters studied. Blood samples were collected once from each buck to determining the hemoglobin concentration(Hb), packed cell volume(PCV), erythrocyte sedimentation rate(ESR), total serum protein, Alkaline phosphatase enzyme concentration(ALK) and glutamic oxaloacetic transamiase (GOT) and glutamic pyruvic transaminase(GPT) enzymes concentration.
Data indicated that, genetic group had a significant effect (P<0.05) on hemoglobin concentration, packed cell volume, erythrocyte sedimentation rate and total serum protein concentration ,which mean were 8.51 ± 0.97 gm/dl , 27.00 ± 0.47 % , 9.73 ± 0.61 mm wintergreen pippette/24 hrs. And 10.56 ± 0.97 gm/dl respectively. Older bucks (12-17 month) showed a significant increased (P<0.05) in the concentration of hemoglobin (7.41 ± 0.49 and 9.31 ± 0.33 gm/dl) and decreased in the erythrocyte sedimentation rate ( 11.82 ± 1.03 and 8.25 ± 0.8 mm wintergreen pippete/24 hrs) for bucks aged 8-12 and 12-17 month respectively. Also data reveled that genetic group had no significant effect on all biochemical blood parameters studied and the over all mean of alkaline concentration, glutamic oxaloacetic and pyruvic tranaminase were 39.44 ± 2.99 KAU/dl, 56.51 ± 2.51 U/L and 45.12 ± 5.48 U/L respectively. While young bucks showed an increased (p<0.05) in the alkaline phosphatase concentration in comparable to older bucks which being 49.48 ± 2.23 and 27.70 ± 4.49 KAU/dl respectively |