1. Al-Murrani, W.K., Kassab, A., Al-Sam, H.Z., Al-Athari, A.M. 1997. Heterophil/lymphocyte ratio as a selection criterion for heat resistance in domestic fowl. British Poultry Science, 38(2), 159-163. https://doi.org/10.1080/00071669708417962
2. Aviagen. 2018. Ross parent stock management handbook Aviagen 0619-AVNR-087.
3. Barna, J., Végi, B., Varadi, E., Szoke, Z., Liptói, K. 2007. Analysis of fertility in broiler breeder flocks - male side approaches. In: Proceedings of the 5th Vietnamese-Hungarian international conference on animal production and aquaculture for sustainable farming, 11–15 August, 2007, Can Tho University, Can Tho, Vietnam. http://mgegodollo.hu/WEBSET_DOWNLOADS/526/Full%20text%20Barna%20Judit%20rev.pdf
4. Brillard, J.P. 2004. Natural mating in broiler breeders: present and future concerns. World’s Poultry Science Journal, 60(4), 438-445. https://doi.org/10.1079/WPS200427
5. Casanovas, P. 2002. Management techniques to improve male mating activity and compenseate for the age related decline in broiler breeder fertility: intraspiking. The Poultry Informed Professional, 63, 1-13.