scholarly journals Genetic parameters for first lactation dairy traits in the Alpine and Saanen goat breeds using a random regression test-day model

2019 ◽  
Vol 51 (1) ◽  
Author(s):  
Mathieu Arnal ◽  
Hélène Larroque ◽  
Hélène Leclerc ◽  
Vincent Ducrocq ◽  
Christèle Robert-Granié
Keyword(s):  
Genetic Parameters ◽  
Random Regression ◽  
Saanen Goat ◽  
Dairy Traits ◽  
Regression Test

scholarly journals Genetic parameters of dairy traits in the Alpine and Saanen goat breeds

1999 ◽  
Vol 31 (5) ◽  
pp. 529 ◽  
Author(s):  
Sophie Bélichon ◽  
Eduardo Manfredi ◽  
Agnès Piacère
Keyword(s):  
Genetic Parameters ◽  
Saanen Goat ◽  
Dairy Traits

scholarly journals Inferring Genetic Parameters of Lactation in Tropical Milking Criollo Cattle with Random Regression Test-Day Models

2008 ◽  
Vol 91 (11) ◽  
pp. 4393-4400 ◽  
Author(s):  
E. Santellano-Estrada ◽  
C.M. Becerril-Pérez ◽  
J. de Alba ◽  
Y.M. Chang ◽  
D. Gianola ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Random Regression ◽  
Regression Test

Genetic parameters of somatic cell scores using random regression test-day models with Legendre polynomials in Tunisian dairy cattle

2020 ◽  
Vol 241 ◽  
pp. 104178
Author(s):  
Nabil Soumri ◽  
Maria Jesus Carabaño ◽  
Oscar González-Recio ◽  
Sonia Bedhiaf-Romdhani
Keyword(s):  
Dairy Cattle ◽  
Somatic Cell ◽  
Legendre Polynomials ◽  
Genetic Parameters ◽  
Random Regression ◽  
Regression Test

scholarly journals Estimation the Genetic Parameters for Milk Yield in Romanian Spotted, Simmental Type Cattle Breed

2021 ◽  
Vol 24 (2) ◽  
pp. 105-121
Author(s):  
Rodica Stefania Pelmuș ◽  
Mircea Cătălin Rotar ◽  
Cristina Lazăr ◽  
Răzvan Alexandru Uță
Keyword(s):  
Animal Model ◽  
Milk Yield ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Cattle Breed ◽  
Random Regression ◽  
Breeding Value ◽  
Regression Test ◽  
Fat Yield ◽  
Heritability Estimates

Abstract The aim of this study was to estimate the genetic parameters for test-day traits milk yield and the breeding value in Romanian Spotted, Simmental type cattle. Random regression test-day animal model was used to estimate the genetic parameters. The number of records were 2062 test-day from 302 cows. The data were obtained from Romanian Breeding Association Romanian Spotted, Simmental type. The heritability estimates values for milk yield ranged between 0.377 and 0.417. The heritability for fat test-day yield in our study was low the values ranged between 0.117 and 0.236 and for protein test-day yield was medium, the values ranged between 0.308 and 0.372. The breeding value for the best ten cows for milk yield ranged from 1946.57 to 3250.38 kg, for fat yield were between 64.92 and 98.86 kg and for protein ranged from 67.26 to 102.21 kg. The correlations between test-day milk yields ranging from 0.28 to 1. Genetic correlations between test day fat and protein yields were high.

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