Gabriela AMARIȚII1, Andra – Sabina NECULAI-ĂLEANU2, Felicia ȚENU3,Vasile MACIUC4
Abstract. . The present study analyzes the level of productions achieved in a herd of Fleckvieh cows in normal lactations and the values of the genetic parameters. The statistical estimators were calculated with the S.A.V.C. computer program and the genetic parameters were estimated using the REML method. In the case of normal lactations, the highest production average is 7,122.91 kg reached in the third lactation, with 4.14% fat content and 2.99% protein. The heritability of milk production is 0.21 and this character is genetically correlated very strongly with the amount of fat and that of the protein, the coefficient value being 0.99 and respectively 0.88. The average productions of the cows are very good but all values are inferior compared to those in the ancestry, where for father’s mother are the highest, 10,929.47 kg. Then cows do not phenotypically express their genetic potential due to the influence of external environmental factors.
Keywords: Fleckvieh, phenotype, variability, heritability, correlations.
DOI 10.56082/annalsarsciagr.2024.2.108
1University of Life Sciences “Ion Ionescu de la Brad”, Iasi, Romania. e-mail: amaritiigabriela@gmail.com
2Research and Development Station for Cattle Breeding”, Dancu, Iasi. Romania. e-mail: sabina.valeanu@scdb-dancu.com.
3University of Life Sciences “Ion Ionescu de la Brad”, Iasi, Romania. e-mail: feliciatenu@yahoo.com
4University of Life Sciences “Ion Ionescu de la Brad”, Iași, Romania. e-mail: vmaciuc@yahoo.fr.
PUBLISHED in Annals Academy of Romanian Scientists Series on Agriculture, Silviculture and Veterinary Medicine Sciences, Volume 13 no 2, 2024