@article{article_457818, title={Determination of Semen Characteristics and Their Effect on Hatching in White Layer Sire Lines}, journal={Journal of Poultry Research}, volume={15}, pages={40–46}, year={2018}, author={Göger, Hüseyin and Demirtaş, Şahnur Erdoğan and Yurtoğulları, Şermin}, keywords={Fertility,Hatchability,Pure line,White Layer}, abstract={<p class="MsoNormal"> <span lang="en-gb" xml:lang="en-gb">This study was carried out on four fast-feathering white layer pure lines
(Black, Blue, Brown and Maroon lines) which have been produced by pedigreed
since 1995 at Poultry Research Institute (Ankara, Turkey). At the institute,
fast feathering cockerels and slow feathering hens are mated for white layer
hybrid production. The aim of the study was to determine the line with the best
performance according to the hatching traits and to use it as sire line for
hybrid production. For this purpose, sperm characteristics, seminal and blood
plasma testosterone and 17β-oestradiol hormone levels, fertility and
hatchability of eggs from four lines were determined. A total of 117 cockerels,
1019 hens and 16310 eggs were used in this three-year study. Significant
genotype effects were observed on ejaculate volume, egg fertility, hatchability
and semen and blood plasma testosterone concentrations (p<0.05).
Hatchability of the Blue and Brown lines was higher than that of the Black and
Maroon lines (p<0.05). Heritability coefficients of fertility (sire + dam)
were estimated for the Black, Blue, Brown and Maroon lines, with the values
reaching 0.29 ± 0.18, 0.59 ± 0.18, 0.11 ± 0.07 and 0.11 ± 0.06, respectively. </span> </p> <p class="MsoNormal"> <span lang="en-gb" xml:lang="en-gb"> <br /> </span> </p> <p> </p> <p> </p>}, number={2}, publisher={Tavukçuluk Araştırma Enstitüsü Müdürlüğü}