title: Sexual behavior and its relationship with semen quality parameters in Sahiwal breeding bulls.
abstract: OBJECTIVE
  The study was conducted at Artificial Breeding Research Centre, NDRI, Karnal, to determine the sexual behavior and its relationship with semen quality parameters in Sahiwal breeding bulls.
  
  
  METHODS
  A total of 63 ejaculates were collected from six adult Sahiwal bulls (age ~47 mo and bwt ~466 kg), to study the relationship of sexual behavior and semen quality. The degree of association between different variables was estimated by Pearson's correlation coefficient method.
  
  
  RESULTS
  The results depicted that, sexual aggressiveness showed significantly high positive correlation with libido score (LS) and sexual behavior score (SBS). Reaction time (RT) and total time taken in mounts (TTTM) had a significant negative correlation with LS and SBS. Penile erection score and penile protrusion score (PPS) both had a significant positive correlation with ejaculatory thrust score, mating ability score, and SBS. Results of correlation among seminal attributes and with sexual behavior depicted that ejaculate volume had positive significant correlation with initial progressive motility (IPM), sperm concentration (SCON), head abnormality, total abnormality, hypo-osmotic swelling test (HOST), acrosomal integrity (AI) whereas, mass activity had positive significant correlation with IPM, SCON, non-eosinophilic spermatozoa count (NESC), HOST, AI, RT and TTTM and IPM had positive significant correlation with SCON, NESC, HOST, AI, and TTTM, whereas and HOST had positive significant correlation with AI. Among seminal attributes, SCON had a positive significant correlation with PPS where as head abnormalities had a positive significant correlation with RT and TTTM.
  
  
  CONCLUSIONS
  It can be concluded that the relationship of sexual behavior and semen quality parameters are reflecting that the sexual behavior of individual bulls is important to harvest good quality and quantity of semen as desired type of sexual preparation can be provided.
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: Shushant
authors.initials: S
authors.lastname: Singh
authors.affiliation: Livestock and Production Management Division, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: M
authors.initials: M
authors.lastname: Bhakat
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Mohanty
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: A
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Gupta
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Chakravarty
authors.affiliation: Artificial Breeding Research Centre, National Dairy Research Institute, Karnal - 132 001, Haryana, India.
authors.forename: P
authors.initials: P
authors.lastname: Singh
keywords: Sahiwal bulls; correlation; semen quality; sexual behavior