Effect of different planes of nutrition on the some minerals concentration in the blood of goats

Abstract

The effect of different levels of energy and protein on the blood concentration of calcium, phosphorus, copper and zinc were evaluated in four experiments. A total of nine growing castrated male balady kids having nearly the same age (8-9 months) and body weight (15-18kg) were experimented on. Four experiments, 3 trials per each were done on the same animals, with about 10 days as a rest period between one experiment and another, in which the animals were fed on control ration during the interval. The nine kids were randomly divided into 3 groups (A, B and C), 3 kids per each. The first group (A) was fed the control ration and used as control, while the other two groups (B and C) were fed the tested rations which furnished 15% more or less DE and CP than the control. The results indicated that feeding high protein ration slightly increased the mean value of serum P, Cu and Zn , while decreased the serum Ca level. Feeding high energy ration for growing kids was decreased the mean value of serum Ca, Cu and Zn and increased the mean value of serum P. On the other hand, feeding of HEHP ration was decreased the mean values of serum Ca and increased value of P. However, feeding low energy ration was increased serum Ca and Zn levels, while serum P and Cu were decreased. Feeding LEHP ration was decreased the mean values of serum Ca, P, Cu and Zn, while feeding LELP ration was decreased the mean value of serum P and Cu and increased serum Ca and Zn.