A Study on Heating of Hatching Eggs to Improve Hatchability : A Field Study

부화율 향상을 위한 종란의 가열방법에 관한 연구

  • Received : 2014.05.27
  • Accepted : 2014.07.15
  • Published : 2014.07.31


This study was conducted to evaluate the effects of heating hatching eggs on the number of day-old chicks, egg temperature and egg weight during extended storage, and to provide basic information for improving hatchability to livestock producers. Eggs (Hy-line) were subjected to the following treatments: "control": eggs were maintained in an incubator after storage for 8 days; "T1": eggs were preheated for 8 hours at $23.9^{\circ}C$ after storage for 8 days in a hatchery; "T2": eggs were initially heated for 8 hours at $37.8^{\circ}C$ in an incubator and then preheated for 8 hours at $23.9^{\circ}C$ in a hatchery after storage for 8 days. The results were as follows: First, at the end of the experiment, the total number of day-old chicks was higher in T1, followed by T2 and then the control. This indicated that chick hatchability may be improved when eggs are preheated. Second, compared with the control, the number of day-old female chicks was expected to be higher in treatments with pre-heating; however, the results indicated the opposite effect. Third, as storage time lengthened, the factor that influenced preheating (the main effect and interactions) was not egg weight but egg temperature measured in the upper, middle and bottom parts of incubator. The temperatures recorded in all treatments ranged from 37.97 to $38.40^{\circ}C$ in the upper parts of incubator, 37.80 to $38.26^{\circ}C$ in the middle parts of incubator, and 37.94 to $38.59^{\circ}C$ in the bottom parts of incubator over storage. In conclusion, preheating was very effective in improving hatchability, and egg temperature was the main factor affecting preheating and hatchability.


Heating of hatching eggs;Hatchability;Temperature


  1. Lourens, S., 2002, Heating of hatching eggs before storage improves hatchability. World Poult., 18, 24-25.
  2. Korea Poultry, 2007, Poultry production and Marketing, May.
  3. Korea Poultry, 2009, Poultry production and Marketing, March.
  4. Lourens, A., 2001, The importance of air metorology in animal production. Int J Biometeorol., 2, 139 -156.
  5. Lourens, A., Van den Brand, H., Meijerhof, R., Kemp, B., 2005, Effect of eggshell temperature during incubation and embryo development, hatchability and post-hatch development. Poult Sci., 84, 914-920.
  6. Lourens, A., Van den Brand, H., Heetkamp, M.J.W., Meijerhof, R., Kemp, B., 2007, Effect of eggshell temperature and oxygen concentration on embryo growth and metabolism during incubation. Poult Sci., 86, 2194-2199.
  7. Petek, M., Dikmen, S., 2004, The effects of prestorage incubation of quail breeder eggs on hatchability and subsequent growth performance of progeny. Animal Res., 53, 527-534.
  8. Petek, M., Dikmen, S., 2005, The effects of pre-storage incubation on hatching success of poultry and game bird eggs. Incubation and Fertility Research Group. In: WPSA Working group 6 (Reprodu ction), Meeting 6th-.7th September 2004, University of Lincoln, Lincoln, UK. Avian Poultry Biology Review, 16 (Abstracts), 63 -64.
  9. Tiwari, A. K. R., Maeda, T., 2005, Effects of egg storage position and injection of solutions in stored egg on hatchability in chickens (Gallus domestics). J Poult Sci., 42, 356-362.
  10. Petek, M., Baspinar, H., Ogan, M., Balci, F., 2005, Effects of egg weight and length of storage period on hatchability and subsequent laying performance of quail, Turkish J Vet Anim Sci., 29, 537-542.
  11. SAS Institute, 2000, SAS User's guide: Statistics, Version 8 edition SAS Institute Inc., Cary, NC, USA.
  12. Sung, M. H., Kim, T. H., Woo, B. J., Chai, S. H., Seung, J. H., Park, J. E., 2008, A Study on developing alternative policy for stably securing grains: early warning system and overseas agricultural investment (final report), Korea Rural Economic Institute.
  13. Korea Poultry, 2001, Poultry production and Marketing, May.
  14. Korea Poultry, 2006, Poultry production and Marketing, Feb.
  15. Fasenko, G. M., Christensen, V. L., Wineland, M. J., Petitte, J. N., 2001, Examining the effects of prestorage incubation of turkey breeder eggs on embryonic development and hatchability of eggs stored for four or fourteen days, Poult Sci., 80, 132-138.
  16. Huh, D., 2011, Policy measure for livestock industry progress -eco-friendly livestock status and outlook -, Korea Rural Economic Institute.
  17. King'ori, A. M., 2011, Review of the factors that influence egg fertility and hatchability in poultry. Int J Poult Sci., 10, 483-492.