EL-Nahas, H. (2010). EFFECT OF ZINC SULFATE AND / OR MANGANESE SULFATE SUPPLEMENTATION ON FRIESIAN CALVES PERFORMANCE .. Journal of Animal and Poultry Production, 1(11), 575-588. doi: 10.21608/jappmu.2010.86270
H. M. EL-Nahas. "EFFECT OF ZINC SULFATE AND / OR MANGANESE SULFATE SUPPLEMENTATION ON FRIESIAN CALVES PERFORMANCE .". Journal of Animal and Poultry Production, 1, 11, 2010, 575-588. doi: 10.21608/jappmu.2010.86270
EL-Nahas, H. (2010). 'EFFECT OF ZINC SULFATE AND / OR MANGANESE SULFATE SUPPLEMENTATION ON FRIESIAN CALVES PERFORMANCE .', Journal of Animal and Poultry Production, 1(11), pp. 575-588. doi: 10.21608/jappmu.2010.86270
EL-Nahas, H. EFFECT OF ZINC SULFATE AND / OR MANGANESE SULFATE SUPPLEMENTATION ON FRIESIAN CALVES PERFORMANCE .. Journal of Animal and Poultry Production, 2010; 1(11): 575-588. doi: 10.21608/jappmu.2010.86270
EFFECT OF ZINC SULFATE AND / OR MANGANESE SULFATE SUPPLEMENTATION ON FRIESIAN CALVES PERFORMANCE .
Animal Production Res. Inst., Agric. Res. Center, Ministry of Agric. , Giza. Egypt.
Abstract
This study was conducted to investigate the effect of supplementation of zinc sulfate and / or manganese sulfate on the digestibility and ruminal activity, some blood parameters and productive performance of Friesian calves . Twenty calves with initial body weightof 262±.7kg in a 180 days experiment were chosen and divided into four similar groups (5 calves each). The control group was fed on concentrate feed mixture (CFM) + berseem hay (BH) + rice straw (RS), while 1st tested group was fed on the control ration + 40 mg zinc sulfate(ZnSO4) / kg DMI, the 2nd tested group was fed on the control ration + 40 mg manganese sulfate (MnSO4) / kg DMI of and the 3rd tested group was fed on the control ration + (40 mg ZnSO4+40 mg MnSO4)/kg DMI . Adding either zinc sulfate or manganese sulfate or mixture of both elements increased (P<0.05) the nutrients digestibility and in turn the nutritive values (TDN and DCP). Adding zinc sulfate or manganese sulfate reduced ammonia-N and increased TVFA's . With respect to blood parameter, rations supplemented with Zinc or Mn sulfate appeared to higher total protein, albumine and lower globuline and urea concentration. Daily gain of the animals fed supplemented rations (tested groups) were higher than that of the control group being 0.969, 0.883 and 1.037 kg for animals fed rations supplemented with Zn , Mn and both of Zn plus Mn sulfate, respectively. Consequently, feed efficiency was better for tested groups which was give more gain with less feed intake and lower feed cost.
It could be concluded that addition of 40 mg zinc sulfate and / or manganese sulfate/kg DMI improved nutrients digestibility, economic efficiency and daily gain of Friesian calves.
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