Water Quality for Dairy Cows in Transylvanian Farms

Silvana Popescu

Abstract


The aim of this study was the analysis of the quality of water consumed by
dairy cows in Transylvanian farms. The water quality was determined based on indicator
parameters (pH, ammonia, sulphate, iron, chlorides, organic substances, overall hardness, total
number of germs, number of Coliform bacteria) and chemical parameters (nitrites, nitrates), by
collecting and analysing 140 water samples (from sources and from watering devices) in 20
farms. The results were compared with the previsions of the Laws 458/2002 and 311/2004. The
data was statistically processed using the SPSS version 17 software. The quality of the water
from the sources and from the watering devices varied, being higher in the sources (p<0.05). 5%
of the samples from the sources had nitrates exceeding the recommended value and 10% had
nitrites. Within the indicator parameters, the following ones showed alterations: ammonia (15%
from samples), iron (45% from samples), chlorides (5% from samples), overall hardness (45%
from samples), organic substances (40% from samples), total number of germs (95% from
samples), the number of Coliform bacteria and fecal coliforms (65% from samples). Nitrites
exceeding the threshold limits were identified in three samples from the watering devices. The
following indicator parameters showed divergences from the legal previsions: iron (65% from
samples), chlorides (5% from samples), overall hardness (35% from samples), organic
substances (70% from samples), total number of germs (95% from samples), the number of
Coliform bacteria and fecal coliforms (90% from samples). In 95% of the studied farms the
water consumed by dairy cows is qualitatively unsuitable, being microbiologically
contaminated.

Keywords


drinking water, indicator parameters, chemical parameters, coliforms

Full Text:

PDF


DOI: http://dx.doi.org/10.15835/buasvmcn-vm:67:1:5955




University of Agricultural Sciences and Veterinary Medicine
3-5 Manastur St., 400372 Cluj-Napoca
Romania
Tel: +40-264-596.384 | Fax: +40-264-593.792
biroupublicatii@usamvcluj.ro