The Eastern spot-billed ducks (Anas zonorhyncha) are raised as backyard duck in Vietnam. Improvement of the growth performance of this breed is important for duck production in rural areas in Vietnam. Little is known about the performance and growth curves of this breed. In this study, six growth models (Gompertz, Brody, Logistic, Richards, Bridges and Janoschek) were used for a modelling growth curve. The body weight of 92 ducks was recorded weekly from the 1st to the 14th week of age. The minpack.lm package in R software was used for fitting the models, and Akaike’s information criterion (AIC) and Bayesian information criterion (BIC) were used for model comparison. Based on their criteria, the Gompertz and Brody models were the best and the worst ones, respectively, regardless of sexes. Estimated asymmetric weights (α) ranged from 1179 ± 9.24 g (Logistic model) to 1397 ± 26.3 g (Brody model) for males and from 1048 ± 6.92 g (Logistic model) and 1222 ± 19.28 g (Brody model) for females, respectively. Age at inflection point was estimated from 3.58 to 4.58 weeks for males and from 3.48 to 4.46 weeks for females, respectively. The growth patterns were different between males and females. So, the possibility of using the Gompertz growth model for modelling the growth of Eastern spot-billed ducks was shown. Obtained information on the growth characteristics of Eastern spot-billed ducks might be used for management strategies and further genetic or genomic research.
The Authors declare that there is no conflict of interest.
Cherry P., Morris T.R. (Editors), 2008. Domestic Duck Production: Science and Practice. CABI. Wallingford (UK),
Do D.N., Miar Y., 2020. Evaluation of growth curve models for body weight in American mink. Animals 10, 22,
FAOSTAT, 2021. FAOSTAT: Livestock primary, production quantity, duck meat, 2019. URL: [access: February 20, 2021].
García-Muñiz J.G., Ramírez-Valverde R., Núñez-Domínguez R., Hidalgo-Moreno J.A., 2019. Dataset on growth curves of Boer goats fitted by ten non-linear functions. Data in Brief 23, 103672,
Kaewtapee C., Khetchaturat C., Bunchasak C., 2011. Comparison of growth models between artificial neural networks and nonlinear regression analysis in Cherry Valley ducks. J. Appl. Poult. Res. 20, 421-428,
Kaewtapee C., Prahkarnkaeo K., Bunchasak C., 2018. Effect of sex on growth curve, production performance and carcass quality of Cherry valley ducks. J. Appl. Anim. Res. 11, 9-18.
Kaplan S., Gürcan E.K., 2018. Comparison of growth curves using non-linear regression function in Japanese quail. J. Appl. Anim. Res. 46, 112-117,
Knížetová H., Hyánek J., Hyánková L., Bělíček P., 1995. Comparative study of growth curves in poultry. Genet. Sel. Evol. 27, 365,
Lin R.L., Chen H.P., Rouvier R., Marie-Etancelin C., 2016. Genetic parameters of body weight, egg production, and shell quality traits in the Shan Ma laying duck (Anas platyrhynchos). Poult. Sci. 95, 2514-2519,
Maruyama K.,Vinyard B., Akbar M.K., Shafer D.J., Turk C.M., 2001. Growth curve analyses in selected duck lines. Br. Poult. Sci. 42, 574-582,
Minh D.V., Lindberge J.E., Ogle B., 2006. Effect of season and location on the crop and contents of local and improved scavenging hens in Northern Vietnam. Trop. Anim. Health Prod. 38, 121-129,
Pham L.D., Do D.N., Nam L.Q., Ba N.V., Ninh P.H., Thuy D.P., Son P.V., Thieu P.C., 2021. Evaluation of genetic diversity and population structure in four indigenous duck breeds in Vietnam. Anim. Biotechnol.,
R Development Core Team, 2011. R: A language and environment for statistical computing. R Foundation for Statistical Computing. Vienna (Austria).
Tai C., Rouvier R., 1998. Crossbreeding effect on sexual dimorphism of body weight in intergeneric hybrids obtained between Muscovy and Pekin duck. Genet. Sel. Evol. 30, 163,
Tai C., Rouvier R., Poivey J.P., 1989. Genetic parameters of some growth and egg production traits in laying Brown Tsaiya (Anas platyrynchos). Genet. Sel. Evol. 21, 377,
TCN654, 2005. Complete feeds for broiler ducks (in Vietnamese), [access: January, 2020].
Téguia A., Ngandjou H.M., Defang H., Tchoumboue J., 2008. Study of the live body weight and body characteristics of the African Muscovy duck (Caraina moschata). Trop. Anim. Health Prod. 40, 5-10,
Vitezica Z.G., Marie-Etancelin C., Bernadet M.D., Fernandez X., Robert-Granie C., 2010. Comparison of nonlinear and spline regression models for describing mule duck growth curves. Poult. Sci. 89, 1778-1784,