SciELO - Scientific Electronic Library Online

 
vol.79 issue3An outbreak of toxoplasmosis in an aviary collection of Nicobar pigeons (Caloenas nicobaria) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • On index processSimilars in Google

Share


Journal of the South African Veterinary Association

On-line version ISSN 2224-9435
Print version ISSN 1019-9128

Abstract

AYDIN, M; RISVANLI, A; TIMURKAN, H  and  KAYGUSUZOGLU, E. Lack of correlation between the electrical conductivity of milk and the blood progesterone levels in cows. J. S. Afr. Vet. Assoc. [online]. 2008, vol.79, n.3, pp.153-154. ISSN 2224-9435.

A study was conducted to investigate the possibility of measuring the electrical conductivity (EC) of cow's milk as a practical and cost-effective means of determining oestrus in cows. Prostaglandin injections were used to synchronise the oestrous cycle of 15 cows. From the onset of oestrus, milk and blood samples were collected from each cow every 2nd day over a period of 22 days. A portable, commercially available instrument was used to measure the EC of the milk. The blood progesterone levels were determined by means of an enzyme immuno-assay method. No correlation was found between the EC of milk and the blood progesterone levels of the cows tested. Electrical conductivity measurements of milk are of no value in determining the onset of oestrus in cows.

Keywords : cow; electrical conductivity; milk; oestrus; progesterone.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License