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Zinc deficiency (hypozincemia) in local Iraqi cattle

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Author(s): Kamal M. Alsaad, | H. I. Al-Sadi, | Osama A.Abdulla

Journal: Research Opinions in Animal & Veterinary Sciences
ISSN 2221-1896

Volume: 1;
Issue: 7;
Start page: 418;
Date: 2011;
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Keywords: Zinc Deficiency | Cattle | Hematology | Pathology | Biochemistry

ABSTRACT
Clinical, hematological, pathological and some biochemical parameters have been studied in local cattle and calves affected naturally with hypozincemia in Mosul, Iraq. The study was conducted on 78 local Iraqi cattle and calves, among these animals, 30 calves were less than six months of age and 38 animals were more than three years old. Ten clinical healthy cattle of different ages were used as control. Affected cattle showed signs of alopecia in different body regions (73.6%), abnormal skin (rough, thickened, wrinkled, cracked and with dandruff ) (73.6%), paleness of mucous membranes (47.3%), intermittent diarrhoea (39.4%), decreased milk production (31.5%) and loss of appetite (26.3%), whereas affected calves showed alopecia in various body regions (90%), abnormal skin (83.3%), decreased growth rate (53.3%), swelling of joints and stiff gait (43.3%) and pica (36.6%). No significant difference has been detected in body temperature, whereas respiratory and heart rates were significantly increased in affected animals in comparison with control. Statistical analysis showed significant decrease in the total erythrocytes (TRBCs), hemoglobin (HB) and packed cell volume (PCV) in diseased cattle and calves and macrocytic normochromic type of anemia was found. The results also indicated significant decrease in lymphocytes and platelets counts, however significant increase was encountered in platelets volume, platelets distribution width, prothrombine time and activated partial thromboplastine time in diseased animals. The biochemical results revealed significant decrease in serum zinc and fibrinogen and haptoglobin level was higher in diseased cattle and calves. Microscopic lesions of the skin of zinc deficient cattle and calves were in the form of epidermal hyperplasia, parakeratosis, hyperkeratosis, acanthosis and the formation of thickened adherent scale.
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