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Diagnosis of oxidative stress in imported cattle  [2016]

Ponosov, S.V., Perm Institute of Federal Penitentiary Service of the Russian Federation. (Russian Federation)

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Peculiarities of adaptation in cattle imported from Germany were studied in the Perm region in 2009-2013. Cattle were of Holstein-Friesian breed with 4-6 month pregnancy. After import animals were kept in the conditions of a livestock complex according to free box technology. High relative humidity of air (11.4% higher than normal) was noted in a cowshed and the air temperature was lower than comfortable by 1-2 deg C. No violations of the generally accepted norms of animal feeding were noted. Clinical examination of 896 animals was done. All incoming animals were averagely fat, skin had no signs of violations of the integrity and sensitivity increase, general condition was satisfactory, hair disheveled, limbs had no damage, setting of hoofs was right, pathological disorders in the nervous, respiratory, cardiovascular, digestive and urinary systems were not found. To study the adaptive capacity of cattle (n=90) the clinical examination was carried out 25 days afterwards. The health status of the animals worsened during that time. They began to molt, coat gained dull shade, horns lost its visible glitter, 13 animals suffered from diseases of the digestive system, which were clinically shown by hypotonia of the rumen in 8 animals and diarrhea in 5 animals; 6% of cattle (5 animals) had increased lymphatic nodes above the udder, 9% (8 animals) - diseases of the extremities were noted (softness of the hoof, lameness), 17% (15 animals) showed signs of disease of
the respiratory system (cough, rhinitis), 5 animals (6%) had dull heartbeats. In the blood of imported animals (n=5) the concentration of malondialdehyde (2.84 mkmol/l) was 2.3 times higher than the physiological norm (1.0-1.2 mkmol/l), with the low (28.57%) level of antioxidant activity of hemolymph. Therefore, animals were under oxidative stress.

From the journal

Perm Agrarian Journal

ISSN : 2307-2873