Abstract
Development of a Rapid Method for Detection of Gram-Positive and -Negative Bacteria in Milk from Cows with Severe and Moderate Clinical Mastitis
Highlights
Acidogenic salts and sodium bicarbonate are additives often used in dairy cattle feed rations in order to prevent both parturient paresis as well as rumen acidosis
The concentrations of the following parameters were measured in the pooled samples: pH, Netto-acid-base-excretion (NABE), Acids, Bases, Ammonium (NH4+), Sodium, Potassium, Chloride, Calcium, Phosphorus
The mean concentrations of potassium were above the normal ranges for the three groups ante partum
Summary
Concentrations of bases decrease, which results in a low value of NABE. The concentration of bases and the NSBA increase, chloride concentrations decrease. For there are no signs of acidosis the decrease of NH4+ and phosphorus are difficult to interpret. Metabolic effects of supplemental L-carnitine have been reported in dairy cows (1), growing steers (2) and growing sheep (3). It was of interest to investigate whether there is an interaction between the rumen and the supplemental carnitine. Three distinct questions were asked in this context. Is there any carnitine present in the rumen of non-supplemented ruminants? Will carnitine be absorbed by the rumen epithelium? Will carnitine be degraded by rumen microbes? Is there any carnitine present in the rumen of non-supplemented ruminants? Will carnitine be absorbed by the rumen epithelium? Will carnitine be degraded by rumen microbes?
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