Journal of Innovative Agriculture, Volume 9, Issue 1 : 8-16. Doi :10.37446/jinagri/rsa/9.1.2022.8-16
Research Article

OPEN ACCESS | Published on : 31-Mar-2022

The influence of flock age and egg size on egg shape index, hatchability and growth of japanese quail chicks

  • Francis Kruenti
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Vida Korkor Lamptey
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Maxwell Ansong Okai
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Gabriel Adu-Aboagye
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Akua Druwaa Oduro-Owuso
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Frederick Bebanaayele
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.
  • Bridget Suurbessig
  • Farm Animal Technology Development Division, Council for Scientific and Industrial Research – Animal Research Institute, Katamanso, P.o. Box AH 20, Achimota, Accra, Ghana.


The study assessed the effects of age and egg size on egg shape, egg weight loss, hatchability and growth of Japanese quail. A total of 198 eggs from a breeder flock at 40, 43 and 46 weeks of age were categorised as light, medium and large. Egg shape index was analysed using Histogram with Fit and Groups. Data were subjected to two-way Analysis of Variance using General Linear Model procedure of Minitab (version 18) at 5% Least Significant Difference. Egg weight loss was not different in the younger birds but changed significantly at 46th week on the 6th and 12th days of incubation. Egg weight loss significantly changed between the light and medium-sized eggs. Fertility was significantly affected by egg size. Age and egg size did not change hatchability but significantly affected hatching weight. Chick growth varied significantly at day 14 in eggs collected at week 40. Chick growth significantly increased across the days as egg size increased. The least shape index (77.3%) was recorded in the heavy and medium eggs at 40 and 46 weeks of age. Fertility, hatchability, chick growth and mortality can be affected by age of quails and size of quail eggs.


Japanese quail, flock age, egg size, hatchability, egg shape


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