An investigation on serum profiles of cu and zn in Sudanese goats raised on different management systems and geographical locations

الملخص EN

Sixty three female Nubian goats were used in this investigation.

All animals were grouped in six groups at El Nisheishiba , two groups of ten animals, were reared indoor (four groups) or out-door (five groups ) at six locations in central Sudan with the objectives of investigating the effects of site and rearing system on the concentrations of copper (Cu) and zinc (Zn) in the peripheral circulation of goats .

Cu status in blood sera from the five groups of goat kept under open extensive grazing was lower than values of the element from the blood of animals kept indoors.

The study provided clues implying deficiency of the element as compared with its general standard profile in the sera of goats.

As for the rearing system , Cu in the blood from animals kept indoors and supplemented with concentrate at Jabal awlia , Elnisheishiba , Khartoum (1) and (2) were fairly fit with the general standard concentration (0.8-1.2 ppm), while Zn concentration values from blood of the goats openly reared and naturally grazed were generally lower than 0.60 ppm at El Fau , Sinnar , Whit Nile , Jabal awlia (2) and El Nisheishiba.

The levels of Copper in indoor rearing system (1.584±0.613 ppm) were significantly (p<0.05) different when compared with levels in out-door (extensively) reared animals (0.367±0.205 ppm), but among sites the levels were fairy comparable (range:0.210±0.097 ppm vs 0.541±0.359 ppm) and was (1.27± 0.507 ppm vs1.920±0.667 ppm) As for zinc , the result indicates significant (p< 0.05) site differences in the element concentration in sera of the animals outdoor system (0.4555±0.305 ppm) and (0.833±0.297ppm ) Also, there were significant (p<0.05) differences in sera values of Zn from animals under different rearing systems (0.337 ±0.244 pmm vs 0.747± 0.657pmm) KEY WORDS: Stiffiness, reduction, deficiency, parakertosis, lipido, anorexia.