Impact of different rearing systems and frequency of semen collection on semen characteristics of Turkeys

Abstract

The study evaluated the impact of rearing system and frequency of semen collection on semen quality
indices of local turkeys. Twenty four toms were randomly assigned to two management systems
(intensive and semi-intensive) and four frequencies of semen collection (once, twice, thrice and four
times) weeklyin a 2 x 4 factorial arrangement of treatments in a completely randomized design.
Ejaculates from each treatment group were assessed for quality using standard procedures. Semen
quality indices of the toms under the two management systems were comparable (p > 0.05). Ejaculate
quality characteristics were highly influenced (p < 0.01) by the frequency of collection. Semen volume,
sperm progressive motility, sperm concentration, total sperm in ejaculate and percentage normal
sperm were higher (p < 0.01) at once and twice per week collections. Also, lower and high significant
(p < 0.01) variations in percentage abnormal sperm were observed at twice per week ejaculation
frequency. It was concluded that local breeder toms can be reared under both management systems
(semi-intensive and intensive) for production of good quality semen. Similarly, for the collection of
good quality semen for Artificial Insemination, twice per week ejaculation frequencyis recommended
for toms reared as semen donors.