Dietary and serum biochemical analyses in a dairy herd with increased acidity of fresh milk.

摘要: A Holstein dairy herd consisted of 24 adult lactating cows in their fourth and fifth lactation was investigated for increased acidity bulk tank milk. The ration corn silage, coarse dry grass hay, a grain mix ground ear corn, soybean meal, rumen buffer, yeast. Results dietary analysis various serum biochemistry parameters 10 are presented this report. Ration showed high fiber, low protein contents. Moreover, the contained lower levels phosphorus, calcium, magnesium higher potassium. fresh milk on acidic side pH meter. Serum biochemical representative sample that concentrations total ionized calcium were situated at edge normal range. with is being reported here first time as well possible association between hypocalcaemia (milk fever) cows.