SVIBOR - Project code: 3-03-356

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 3-03-356


THE EFFECT OF WATER QUALITY ON INTENSIVE LIVESTOCK BREEDING AND ECOLOGY


Main researcher: VINKOVIĆ, BARA (66413)



Assistants
Type of research: applied
Duration from: 04/30/91. to 12/15/95.

Papers on project (total): 0
Institution name: Veterinarski institut, Zagreb (48)
Department/Institute: DEPARTMENT OF ANIMALHYGIENE
Address: ZAGREB, SAVSKA 143
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 535-011
Fax: 385 (0)1 537-140
E-mail: mavi.veinst.hr

Summary: In the period between April 30, 1991. and Decembar,31. 1993. in total 127 samples of drinking water were taken on several large farms and rural husbandries. Collected samples were analysed for the main bacteriological, physical and chemical parameters in compliance with the Regulations for hygienic correctens of drinking water (Act on the taking over of federal bills inn the field of public health, NN 53/91. Obtained results of analyses showed that 14.8 % of analysed samples did not meet the criterium for total bacteria count, 31.5 % for the most probable coliform bacteria count respectively. The principal chemical parameters of organic impurities exceeded the permitted level in 3.1 % of cases for ammoniac, 22.8 % for nitrite content and 35.4 % for potassium permanganate respectively. Both the nitrate and chloride content in all analysed samples was below the permitted level. From the ecological point of view, it is encouraging that organic impurities were not found in water sources. Moreover, if we take into consideration the deficiency of conditional heads per hectare in Croatia (Vinković, 1993) and favourable epizootiological situation with respect to specially hazardous contagious diseases compared to that in numerous European countries (Pauković, 1993), these parameters should be used in the promotion of our animal production. By monitoring the effects of livestock production on the environment, the veterinary profession may offer valuable arguments by means of which it would be possible to change to one's advantage the present lagging behind the world achivements in livestock production and also to produce ecologically acceptable foods of animal origin.

Keywords: livestock production, animal fecal matter, water, nitrites, nitrates.

Research goals: The aim of proposed study was to determine presumed sources of environment contamination with respect to the numerousness of animals in exploatation and the mode of their menagement. For that purposes, we have analysed the samples of water taken from the wells which were located at the distance of min. 20 m and 500 m from the deposits of fecal matter. According to the Regulations for the hygienic correctness of drinking water (Act on the taking oveer federal bills in the field of public health, NN 53/91), 14.8 % of analysed samples did not meet the criterium for total bacteria count, 31.5 % for the most probable coliform bacteria count respectively. Excessive nitrite content was found in 22.8 %, ammoniac content in 3.1 % and potassium permanganate utilization in 35.4 % of analysed samples. On the other hand, the content of nitrates and chlorides was below the permitted level. Biological study was not performed because significant nitrate-nitrite concentrations which could affect animal health and perfomance have not be found. These results have an indirect importance in the evaluation of environment health. In the course of investigations, however, a question of timely intervention aimed at the reduction of environmental pollution has arisen. Thus, the possibility of use of zeoolites in intensive pig-breeding for achivement of ecologically acceptable production, has been investigated as one of the alternative solutions (Vinković at all., 1993).

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Last update: 10/05/95
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