The influence of nitrate and cadmium load on protein and nitric metabolism in young cattle

B. Gutyj, N. Nazaruk, N. Levkivska, A. Shcherbatyj, A. Sobolev, J. Vavrysevych, Y. Hachak, O. Bilyk, V. Vishchur, Z. Guta

Abstract


We studied the impact of nitrate and cadmium load on protein and nitrogen metabolism in young cattle. The feeding with forage of sodium nitrate at a dose of 0.15 g NO3/kg and cadmium chloride at a dose of 0.02 mg/kg of body weight leads to a violation of protein and nitrogen exchange, as indicated by the low levels of urea, total protein and high levels of ammonia.

We registered that the lowest urea content in blood serum of research bulls was on the 20th day of the experiment. The combined use of nitrate and cadmium on the animals was accompanied with a greater reduction of urea concentration in their blood, caused by sodium nitrate. The gradual reduction of urea in the blood serum of bulls indicated reduced activity of metabolic processes in an organism of bulls and inhibition of functional capacity of the liver to synthesize proteins.

Under the influence of nitrites and cadmium in our experiments in an organism of bulls was set the decrease in total protein in serum, depending on the intensity of met hemoglobin formation and the level of aggressive forms of oxygen, are formed after the activation of these processes. The changes of total protein level in the blood serum can be considered as suppression of protein synthesizing liver function.

Calves feeding with sodium nitrate and cadmium chloride promoted significant increase of ammonia in the blood serum than just feeding of calves with sodium nitrate. On the twentieth day of the experiment the level of ammonia in the second experimental group of animals was higher by 53% towards the control.


Keywords


nitrates; nitrites; cadmium; total protein; ammonia; urea; bulls

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References


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DOI: http://dx.doi.org/10.15421/2017_14

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