• Widya Pintaka Bayu Putra Research Center for Biotechnology - Indonesian Institute of Science
Keywords: Body weight, Growth curve, Inflection, Maleo birds, Non-linear regression


Maleo bird (Macrocephalon maleo) is the one of protected bird’s species and originated from Sulawesi island of Indonesia. This study was carried out to obtain the growth curve of body weight (BW) in mixed-sex Maleo birds from hatching to yearling ages. The growth curve in this study was calculated with non-linear regression of Logistic (L) and Gompertz (G) models using CurveExprt 1.4. computer program. The primary data in this study was cited from previous study through a literature study. Research showed that the asymptotic weight (A) in birds was 1825.34 g (L) and 3429.23 g (G). The weight of inflection (Wi) in studied birds were 912.67 g (L) and 1260.75 g (G). The time of inflection (ti) in birds was 8.51 months (L) and 11.00 months (G). The maximum growth rate in birds was 159.72 g/month (L) and 151.29 g/month (G). The coefficient of determination (R2) in both models included of very high category (0.80<R2<1.00) but the lower of standard error (SE) value showed in L model. It can be concluded that the non-linear regression of Logistic model can be used as BW predictors in mixed-sex Maleo birds.


I.M. Budiarsa, I.W.T. Artama, L. Sembiring, J. Situmorang, Phylogenetic analysis of the Maleo (Macrocephalon maleo) based on the first exon of Rhodopsin (RD1) nuclear gene sequences. Biota. 15 (2010) 160-166.

I.G.N.P. Widnyana, Kajian morfologi dan morfometri telur burung Maleo (Macrocephalon maleo SAL. Muller 1846), J. AgroPet. 14 (2017) 31-37.

H. Gunawan, Strategi burung Maleo (Macrocephalon maleo Sal. Muller 1846). Tesis (2000), Institute Pertanian Bogor, Bogor.

M. Tanari, Y. Rusiyantono, Hafsah, Hatching technology of Maleo bird eggs (Macrocephalon maleo Sal. Muller 1846) as a conservation effort, J. Agroland. 15 (2008) 336-342.

H. Gunawan, Food preference and consumption of Maleo Macrocehalon maleo Sal. Muller chick in weaning period, JPHKA, 1 (2004) 58-65.

H.A. Fitzhugh, Analysis of growth curves and strategies for altering their shape, J. Anim. Sci., 42 (1976) 1036-1051.

I.E. Arsoy, M. Mendes, S. Aktan, Growth curve establishment for American Bronze turkeys, Arch. Tierz., 49 (2006) 293-299.

R.E. Ricklefs, Pattern of growth in birds, Ibis, 110 (1968) 419-451.

D.G. Hyams, CurveExpert Basic, Release 1.4.,, 2010 (accessed 13 january 2021)

M. Selvaggi, V. Laudadio, C. Dario, V. Tufarelli, Modelling growth curves in a nondescript Italian chicken breed: an oppurtunity to improve genetic and feeding strategies, J. Poult. Sci., 52 (2015) 288-294.

A. Sumangando, Biologi perkembangan burung Maleo (Macrocephalon maleo, Sal. Muller 1846) yang ditetaskan secara ex-situ. Tesis (2002). Institut Pertanian Bogor. Bogor.

M. Ali, Pertumbuhan Maleo (Macrocephalon maleo) umur 7 - 12 bulan dalam kandang penangkaran ek-situ PT. Panca Amara Utama, Kecamatan Batui, Kabupaten Banggai. Skripsi (2019). Universitas Tadulako, Manado.

C. Rizzi, B. Contiero, M. Cassandro, Growth patterns of Italian local chickens population, Poult. Sci., 92 (2013) 2226-2235.

H. Atil, M. Grossman, C. Takma, Comparison of growth curve models on average and individual body weights in chickens, Arch. Geflugelk., 71 (2007) 1-5.

Y. Yang, D.M. Mekki, S.J. Lv, L.Y. Wang, J.H. Yu, J.Y. Wang, Analysis of fitting growth models in Jinghai mixed-sex Yellow chicken, Int. J. Poult. Sci., 5 (2006) 517-521.

Al-samarai, F.R., Growth curve of commercial Broiler as predicted by different nonlinear functions, American J. Appl. Sci. Res., 1 (2015) 6-9.

H. Eleroğlu, A. Yıldırım, A. Şekeroğlu, F.N. Çoksöyler, M. Duman, Comparison of growth curves by growth models in slow-growing chicken genotypes raised the organic system, Int. J. Agric. Biol., 16 (2014) 529-535.

Y. Rusiyantono, M. Tanari, M.I. Mumu, Consrvation of Maleo bird (Macrocephalon maleo) through egg hatching modification and ex situ management, Biodiversitas, 12 (2011) 171-176.

I.G.N.P. Widnyana, B. Sundu, Rusdin, M. Tanari, Sex detection in Maleo bird (Macrocephalon maleo Sal. Muller 1846) nurtured in ex-situ conservation through body morphological and hormonal studies, Int. J. Vet. Sci. Agric. Res., 1 (2019) 17-22.

How to Cite
Widya Pintaka Bayu Putra. (2021). PREDICTING THE GROWTH CURVE OF BODY WEIGHT IN MALEO BIRDS (MACROCEPHALON MALEO). OISAA Journal of Indonesia Emas, 4(2), 59-63.