Research Regarding Heritability and Repeatability Coefficients of some Milk Production Traits from Farms in Moldavian Region

Nicoleta Rosca, Ştefan Creangă, Mihaela Ivancia


Aim of this study was estimation of two genetic parameters: heritability and repeatability, for five milk production traits. Data used in current paper consisted from phenotypic information from 998 cows with 1897 yield records. The traits which were considered for 305 days of lactation included milk, fat ant protein yields and percentages of milk fat and protein. Data were statistically analyzed through the S.A.V.C. (Statistical Analyze of Variance and Covariance) software. The estimated heritabilities for studied traits were 0.24 to 0.38 for milk yield (MY), 0.27 to 0.41 for fat yield (FY), 0.61 to 0.87 for percentage of fat (F%), 0.25 to 0.39 for protein yield (PY) and 0.59 to 0.78 for percentage of protein (P%). Repeatability estimates for studied traits ranged from 0.27 to 0.34 for MY, from 0.30 to 0.41 for FY, from 0.67 to 0.86 for F%, from 0.28 to 0.39 for PY and from 0.62 to 0.77 for P%. Results from this paper are in line with values reported from other authors. Also, Fisher results indicate significant differences between studied farms.


heritability, repeatability, yield traits, genetic parameters, Holstein cow

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Missanjo E., Imbayarwo-Chikosi V., Halimani T., Estimation of genetic and Phenotypic parameters for production traits and somatic cell count for Jersey dairy cattle in Zimbabwe, International Scholarly Research Notices: Veterinary Science, 2013, 2013, 1-5;

Wongpom B., Koonawootrittriron S., Elzo M.A., Suwanasopee T., Milk yield, fat yield and fat percentage associations in Thai multibreed dairy population, Agriculture and Natural Resources, 2017, 51, 218-222;

Adnan A., Aslmeninejad A.A. and Tahmuraspor M., Estimation of genetic parameters for production traits of Holstein cattle in Khorasan Ravazi province, Iranian journal Animal Science, 3, 171-178

Creangă Şt., Maciuc V., Manual de bune practici în ameliorarea genetică a bovinelor, 2009, Ed. „Ion Ionescu de la Brad”, Iaşi;

Ivancia Mihaela, Ameliorarea animalelor, Ed. Alfa, Iaşi, 2007

Cilek S. and Sahin E., Estimation of some genetic parameters (heritability and repeatability) for milk yield in the Anatolian population of Holstein cows, Archiva Zootechnica, 2009, 12(1), 57-64

Negruţiu E., Petre A. and Pipernea N., Genetica şi ameliorarea animalelor, Ed. Didactica şi Pedagogica, Bucureşti, 1969, pp. 348-373

Alijani S., Jasouri M., Pirany N and Kia H. D., Estimation of variance components for some production traits of Iranian Holstein dairy cattle using Bayesian and AI-REML methods, Pakistan Veterinary Journal, 2012, 32(4), 562-566

Efrani-Asl Z., Hashemi A. and Farhadian M., Estimates of repeatability and heritability of productive trait in Holstein dairy cattle, Iranian Journal of Applied Animal Science, 2015, 5(4), 827-832

Jamrozik J. and Schaeffer L.R., Estimates of genetic parameters for a test day model with random regressions for yield traits of first lactation Holsteins, 1997, 80(4), 762-770

Zaabza H.B., Ben Gara A., Hammami H., Ferchichi M.A. and Rekik B., Estimation of variance components of milk, fat and protein yields of Tunisian Holstein dairy cattle using Bayesian and REML methods, Archives Animal Breeding, 2016, 59, 243-248

The global standard for Livestock data, 2017. Home page address:

Falconer D.S., Introducere în genetica cantitativă, Ed. Agrosilvică, Bucureşti, 1967, pp. 159-163

Sandu Gh., Modele experimentale în Zootehnie, Ed. Sanivet, Bucureşti, 1995, pp. 281-328

Ghaderi-Zefrehei M., Kheirabadi K. And Rowghani E., Application of multiple-trait random regression animal model to predict genetic production traits in Iranian Holstein dairy cattle, Research Opinion in Animal and Veterinary Sciences, 2014, 4(3), 157-162

Suzuki M. and Van Vleck L.D., Heritability and repeatability for milk production traits of Japanese Holsteins from an Animal Model, Journal of Dairy Science, 1994, 77, 583-588

Amini A., Aslmeninejad A.A. and Tahmuraspor M., Estimation of genetic parameters for production traits of Holstein cattle in Khorasan Ravazi province, Iranian Journal Animal Science, 2011, 3, 171-178

Ravazi S.M., Vatankhah M., Merzaei H.R. and Rokoei M., Estimation of genetic trends for production traits of Holstein cattle in Markazi province, 2007, Pajouhesh. Sazandegi., 77, 55-62

Roman R.M., Wilcox C.J. and Martin F.G., Estimates of repeatability and heritability of productive and reproductive traits in a herd of Jersey cattle, Genetics and Molecular Biology, 2000, 23(1), 133-119

Paura L., Kairisha D. and Jonkus D., Repeatability of milk productivity traits, Veterinarija ir Zootechnika T., 2002, 19 (41), 90-93

Turiseva A.M., Ikonen T. and Ojala M., Repeatability estimates for milk coagulation traits and non-coagulation of milk in Finnish Ayshire cows, Journal of Dairy Research, 2003, 70(1), 91-98.


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