Evolution of Broilers and Broiler Breeders

Ahmet Uçar, Mesut Türkoğlu, Musa Sarıca


Selection of meat-type chickens is primarily focused on growth rate and body composition improvement. The negative relationship between growth and reproduction related characteristics makes rearing and breeding applications difficult. Although the studies on chicken breeding have more than 150 years of history, the speed-up have been derived only in last 75 years. While selection breeding birds based on their phenotype for such traits as skeletal integrity, body conformation, condition, morbidity etc. Over the years, progress has been made in terms of number of hatching eggs, egg weight and hatchability at the parent stocks. For the meat-type chickens, the average body weight gain was 8 g per day and feed conversion rate was 5.0 until the age of slaughter in the first quarter of the 20th century, whereas at the beginning of the 21th century, these characteristics reached 66 g and 1.7, respectively. Improvement in body weight and the feed conversion ratio of the genotypes which have been used for broiler production is because of the development in genetics. Besides these developments, some problems have surfaced regarding immune function, skeletal disorders, liability, and in the breeder level reproductive troubles.


Broiler; Parent stock; Performance characteristics; Progress; Troubles

Full Text:

PDF (Türkçe)

DOI: https://doi.org/10.24925/turjaf.v6i1.73-77.1751

 Creative Commons License
This work is licensed under Creative Commons Attribution 4.0 International License

ISSN: 2148-127X

Turkish JAF Sci.Tech.

Turkish Journal of Agriculture - Food Science and Technology (TURJAF) is indexed by the following national and international scientific indexing services:





















Our Journals

Turkish Journal of Agriculture - Food Science and Technology

International Journal of Poultry - Ornamental Birds Science and Technology

Turkish Research Journal of Academic Social Science

Turkish Research Journal of Academic Technical Science

Turkish Research Journal of Academic Health and Medical Sciences

Our congresses

International Anatolian Agriculture, Food, Environment and Biology Congress (TARGID)

International Congress of the Turkish Journal of Agriculture - Food Science and Technology (TURJAF)

Our Youtube Channel


Our Books

Our Scientific Books

About Us

The Turkish Science and Technology Publishing (TURSTEP) is an online and open-access platform to publish recent research and articles of scholars worldwide. Founded in 2013 and based in Turkey, the TURSTEP as a platform for academics, educators, scholars, and students from Turkey and around the world, to connect with one another. The TURSTEP disseminates research that is proven or predicted to be of significant influence for the general public.


Contact Us

Please send all inquiries to the email:


Business Adress

Eğriköprü Mh. 75-28. Sk. 11/10 58050 Merkaz/Sivas, Turkey