RESULTS OF INVESTIGATIONS ON THE QUALITY OF FEEDS GIVEN TO DAIRY COWS WITH DIFFERENT STATES OF DISEASE
Abstract
In a dairy cow farm, during November 2006-March 2007, several morbid states were observed displayed as placenta retention (75-80%), uterus-vaginal secretions and losses by mortality of suckling calves, lower milk yield, etc. Several factors were analyzed to determine the causes of the health problems. Among the analyzed factors, an important role was played by the quality of feeds. The raw ingredients and compound feeds were examined oganoleptically, physico-chemically, mycologically and micotoxicologically in order to determine their involvement in worsening the health state. The results showed significant deviations of the crude protein content, a moderate contamination with toxicogenous fungi and the presence of mycotoxins in excess of the admitted maximal loads. Of the 9 samples examined mycotoxicologically, aflatoxin was determined in 3 samples (compound feed for cows, wheat bran and untoasted sunflower meal) and ochratoxin was determined in 5 samples (compound feed for nursing calves, toasted sunflower meal, compound feed for cows, coarse grinded wheat and corn and untoasted sunflower meal). The presence in feed of aflatoxin and ochratoxin establish the alteration of the health status of the dairy cows.Key words: dairy cows, morbid states, feed quality, mycotoxins, organoleptic and laboratory examinationReferences
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