Effect of behavior and season on fertility
DARYAB SINGH AND M.C. YADAV*
Project Directorate on Poultry, Rajendranagar, Hyderabad - 500030 (A.P)
* Narain College , Shikohabad (U.P.)
The males of Pb1 and Pb2 strain available at PDP were categorized according to their physical appearance as most aggressive, moderately aggressive, and non-aggressive groups. All the males were trained before milking. Dahlem Red females were utilized for this study as female line for A.I. Three seasons were considered for this study Viz. Monsoon (June, July and August) Spring (December, January and February) and Summer (March, April and May). During each season, three groups of 10 females of Dahlem Red were inseminated with semen from aggressive, moderate and non-aggressive males. Fertile eggs were collected from the second day of AI, and incubated. After one week of incubation, all the eggs were tested for fertility and data was recorded up to 2 nd week of incubation. From the results, it is evident that there is a significant influence of season on fertility with highest in spring followed by monsoon and least in summer. However, there is hardly any effect on behavior of the breeder cocks on fertility. The percentage of fertility ranged from 77.05 to 93.94, 26.22 to 42.61 and 56.22 to 69.75 during first second and up to 2 nd week end respectively over three seasons.