[Influence of water quality on growth energy and resistance of calves]
2006
Brilo, I.B.,National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
It was established that sanitary - hygiene quantity of water used on dairy farms in different points of voter - pipe has not common organo - leptical quality and chemical composition. Expence of water for animals is 17.5 - 33.2 % from common expence of water. For working operations it is necessary 66 — 70.1% in in-door maintenance and 52.9 -65.9% in pasture period. Dependence of calves desease on quality of used water is established. The basic diseases observable during this period, were frustration of a gastroenteric path. Thus diseases are noted only within the first 3 months of experiment. So, for this period of supervision over group of machine tools with a livestock on 60 calves in skilled group has had been ill with gastroenteric illnesses 7, in control - 3, that makes accordingly 11,6 and 5%. For the period of the further growing calves diseases were not revealed among experimental groups. It is necessary to note also, that current of calves illness at skilled group was heavier, and symptoms of disease were shown more expressed and were characterized by strong peristaltic noises of intestines. Use of water with the superfluous content of general iron, sulfates, the dry rest, the general rigidity and raised мутности renders unfavourable influence on an organism of calves. It causes decrease in weight gain on 3,8%, daily average weight gains - on 8,6%, bactericidal and лизоцимной activity of whey of blood - on 16,6-3,9%, occurrence диспротеиномии and increase of calves deseases by gastroenteric illnesses on 6,6%. 2. In order to prevent adverse consequences of use of substandard water it is necessary to place sources of water supply of cattle-breeding complexes outside of their industrial zone and to spend the analysis of its quality on a regular basis
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