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Biomedical subjects

G H Counotte

Publications and source records attributed to G H Counotte.

6 recordsLinked to original sources
PubMed1992

[The effect of feeding mangel-wurzels on blood beta-hydroxybutyrate level of milk-producing cows].

The effect of feeding dairy cattle mangel-wurzels on the serum increased concentration of beta-hydroxybutyrate was investigated in serum is normally indicative of an increased catabolism of fats in the liver as a result of an energy shortage. Feeding cattle large amounts of mangel-wurzels can cause the serum beta-hydroxybutyrate concentration to increase above normal reference values, thus seemingly indicating that there is a (sub)clinical acetonaemia. In fact the increased concentration of beta-hydroxybutyrate is probably the result of an increased production of butyrate in the rumen.

3-Hydroxybutyric Acid↗
PubMed1992

Haematological and clinicochemical blood profiles in slaughter pigs.

In a cohort study, 40 pig finishing herds were selected: twenty pig herds with a low and twenty pig herds with a high prevalence of several pathological lesions recorded at slaughter in a six-month period before the start of the study. Blood samples were taken from 20 pigs per herd at the end of the finishing period to investigate haematological and clinicochemical profiles. There was only a significant difference in serum albumin concentration between the low and high lesion prevalence groups. There were distinct differences in blood profiles between pig herds, but also between batches of pigs within a herd, housed in different compartments. Differences between castrated males and gilts were also demonstrated with respect to mean values of the blood variables haemoglobin, iron, copper, beta-globulin, eosinophils and segmented neutrophils. However, the differences were not of a biologically important magnitude. The mean values of the blood variables pepsinogen and lymphocytes differed significantly between pig herds from the two participating integration groups. Pigs with a higher albumin concentration, a lower gamma-globulin concentration, a higher copper concentration and a higher creatine kinase activity in serum showed a higher daily weight gain.

Abattoirs↗
PubMed1979

An analysis of the buffer system in the rumen of dairy cattle.

A method is presented for the analysis of buffer systems in the rumen using the first derivation of titration curves. Bicarbonate and volatile fatty acids (VFA) are the main components of the buffering system in the rumen fluid of dairy cattle under widely different feeding conditions. Phosphate from saliva is of little importance as a buffer, but neutralizes acids produced in the rumen. After studying five cows during the peripartal period a spontaneous and transient increase in the concentrations of VFA and a soluble marker (PEG) as well as a drop in pH and in the bicarbonate concentrations not related to feeding was observed in two animals that were sampled several hours before parturition. The potential risk of provoking rumen disturbances upon feeding animals close to the time of parturition, when buffering capacity may be minimal, is stressed.

Animal Feed↗