نوع مقاله : مقاله پژوهشی
نویسندگان
basic sciences Dep, Veterinary School, Ferdowsi University of Mashhad
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Dairy cow performance in terms of food consumption and growth, reproduction, milk production with high quality, hygiene, and health, has a direct relationship with water without anti-quality agents. The purpose of the present study was to evaluate the quality of drinking water in dairy farms of Mashhad suburb, Iran in terms of some chemical contaminations. Therefore, 1 liter of water samples was taken from 30 dairy units under standard conditions, and heavy metals including lead, mercury, arsenic, cadmium and nitrate, and sulfate ions were measured by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). After calculating and recording the descriptive statistical indices, data were analyzed in terms of comparing averages with existing standards for each parameter, as well as comparing the contamination rate in different geographical areas using SPSS software. The results showed that the nitrate and sulfate concentrations in all farms were lower than standard values, also, arsenic, lead, and mercury concentrations in all units and cadmium levels in 10 farms were exceeded. It was also found that there was no significant difference in the amount of heavy metal between the four studied geographic areas while there was for the two factors, nitrate and sulfate (P<0.05). The existence of industrial estates, busy highways, and thermal power plant located around the Mashhad city that have the potential for entering pollutants and heavy metals into the environment, also, penetration of chemical fertilizers and industrial and domestic wastewater into groundwater are possible causes of contamination of livestock drinking water with heavy metals and chemical pollutants.
کلیدواژهها [English]
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