1Veterinary College and Research Institute, Eastern Garden, Orathanadu, 614625, Thanjavur District, Tamil Nadu, India
2Tamil Nadu Veterinary and Animal Science University, Regional Research Centre, Pudukkottai, 622004, Tamil Nadu, India
Receive Date: 21 July 2011,
Revise Date: 18 October 2011,
Accept Date: 21 October 2011
The study was conducted to determine the effects of turkey (Meleagris gallopavo)egg weight on certain egg traits and hatching performance. A total of 178 turkey eggs comprising of three different egg weight groups below 60 g (G I), 61 to 69 g (G II) and above 70 g (G III) were used for this study. Average egg weight (g), egg length (cm), egg breadth (cm) and egg volume (cm3) values increased with increasing egg weight. There was a significant (P<0.01) difference in egg traits between egg weight groups except shape index. Percentage of infertile eggs and embryonic mortalities were decreased whereas percentage of dead in shell, total egg hatchability, fertile egg hatchability, fertility and poult hatched weight values were increased as weight of egg increased. Results of higher hatching performance was obtained for eggs that weighed above 71 g and were statistically significant (P<0.01) from eggs that weighed between 60-69 g and below 60 g. It is concluded that turkey eggs that weigh above 70 g would be suitable for setting to obtain better reproductive performance followed by medium sized turkey eggs (6-69 g) and small sized turkey eggs weighed below 60 g.
Altan O., Oguz I. and Settar P. (1995). Effect of egg weight and specific gravity of the hatchability characteristics in Japanese quail. Turk. J. Agric. For.19, 219-222. Baspinar E., Yildiz M.A., Ozkan M.M. and Kavuncu O. (1997). Effect of egg weight and shape index on hatchability in Japanese quail eggs. Turk. J. Vet. Anim. Sci.21, 53-56. Deeming D.C. (1997). Ratite Egg Incubation. A practical Guide. Ratite Conference, Buckinghamshire, UK. Hassan G.M. and Nordskog A.W. (1971). Effects of egg size and heterozygosis on embryonic growth and hatching speed. Genetics. 67,279-285. Karacanta A., Aybey M., Kocak C. and Gonul T. (1977). Effect of egg weight on hatchability in parent Bronze turkey. J. Agri. Fac. Ege Uni.13, 133-137. Malago J.J. and Baitilwake M.A. (2009). Egg traits, fertility, hatchability and chick survivability of Rhode Island Red, local and cross bred chickens. TanzaniaVet. J. 26,24-36. Mroz E., Orlowska A. and Stepinska M. (2010). Hatchery waste and Hatchability of turkey eggs.Pol. J. Natur. Sci. 25, 143-153. Narushin V.G. and Romanov M.N. (2002). Egg physical characteristics and hatchability. World’s Poult. Sci. J. 58, 297-303. Ozcelik M., Ekmen F.and Elmaz O. (2009). Effect of location of eggs in the incubator on hatchability of eggs from Bronze turkey breeders of different ages.South African J. Anim. Sci. 39,214-222. Sachdev A.K., Ahuja S.D., Thomas P.C. and Agarwal S.K. (1985). Effect of egg weight and duration of storage on the weight loss, fertility and hatchability traits in Japanese quail. Indian J. Poult. Sci.20,19-22. Senapati P.K., Desk Mandal K.G. and Chatterjee A.K. (1996). Relation between egg weight, shape index, fertility and hatchability of Japanese quail eggs. Environ. Ecol. Stat.14,574-577. Shanawany M.M. (1987). Hatching weight in relation to egg weight in domestic birds. World’s Poult. Sci. J. 43, 107-115. Snedecor G.W. and Cochran W.G. (1989). Statistical Methods. 8th Ed., Oxford and IBH Publishing Co., Calcutta.