title: Plasma mineral profiles and hormonal activities of normal cycling and repeat breeding crossbred cows: A comparative study.
abstract: OBJECTIVE
  The present study was carried out to compare the associated role of micro minerals and hormones in repeat breeding animals with the normal crossbred cows.
  
  
  METHODS
  Blood samples were collected from 10 normal cycling and 10 repeat breeding crossbred cows of Ramakrishna Mission Ashram, Narendrapur to study the plasma mineral profile and hormonal activities.
  
  
  RESULTS
  Zn was found to be highly significant (p<0.01) between the two groups. Follicle stimulating hormone (FSH) and progesterone showed significant (p<0.05) difference in repeat breeding animal from the normal cyclic animal, whereas no significant differences were observed in Ca, P, Cu, Se, Co, luteinizing hormone and estradiol level.
  
  
  CONCLUSIONS
  It may conclude that repeat breeding condition of crossbred cows in farm condition is mainly due to the low level of progesterone, FSH and zinc.
authors.affiliation: Department of Veterinary Biochemistry, Faculty of Veterinary and Animal Science, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India.
authors.forename: Abhijit
authors.initials: A
authors.lastname: Barui
authors.affiliation: Department of Veterinary Biochemistry, Faculty of Veterinary and Animal Science, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India.
authors.forename: Subhasis
authors.initials: S
authors.lastname: Batabyal
authors.affiliation: Sasya Shyamala Krishi Vigyan Kendra, Ramakrishna Mission Vivekananda University, Narendrapur, Kolkata, West Bengal, India.
authors.forename: Sarbaswarup
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Veterinary Biochemistry, Faculty of Veterinary and Animal Science, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India.
authors.forename: Debjani
authors.initials: D
authors.lastname: Saha
authors.affiliation: Department of Veterinary Biochemistry, Faculty of Veterinary and Animal Science, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India.
authors.forename: Saibal
authors.initials: S
authors.lastname: Chattopadhyay
keywords: crossbred cow; hormone; mineral profile; normal cyclic; repeat breeding