Analysis of milk characteristics in cows and their daughters

Milk yields of 43,419 Black-White and 20,995 Red-White cows and their daughters used in 1978-1993 in the South-West region of Poland were analysed. Breeding values of all animals were estimated by BLUP (Animal Model). The data was preadjusted for age and season of calving. Cows-dams were classified...

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Bibliographic Details
Published inCzech Journal of Animal Science Vol. 44; no. 9
Main Authors Zwolinska-Bartczak, I, Zuk, B, Pawlina, E. (University of Agriculture, Wroclaw (Poland). Dept. of Genetics and Animal Breeding)
Format Journal Article
LanguageEnglish
Published 01.09.1999
Subjects
AGE
ANIMAL MODELS
BREEDING VALUE
BREEDS (ANIMALS)
DAIRY COWS
DAUGHTERS
EDAD
FILLE
GRASA DE LA LECHE
HIGH YIELDING BREEDS
HIJAS
MATIERE GRASSE DU LAIT
MILK FAT
MILK YIELD
MODELE ANIMAL
MODELOS ANIMALES
POLAND
POLOGNE
POLONIA
RACE (ANIMAL)
RACE A HAUT RENDEMENT
RAZAS (ANIMALES)
RAZAS DE ALTA PRODUCTIVIDAD
RENDEMENT LAITIER
RENDIMIENTO LECHERO
VACAS LECHERAS
VACHE LAITIERE
VALEUR GENETIQUE
VALOR GENETICO
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Summary:Milk yields of 43,419 Black-White and 20,995 Red-White cows and their daughters used in 1978-1993 in the South-West region of Poland were analysed. Breeding values of all animals were estimated by BLUP (Animal Model). The data was preadjusted for age and season of calving. Cows-dams were classified to a group of cows with high performance by two ways: 1. cows recorded in High Performance Register, 2. cows which exceeded an assumed production level. Breeding values of classified dams were higher than those of remaining dams. Similarly, daughters of these dams had higher breeding values than daughters of remaining dams. Greater differences were observed in Black-White breed. Generally, differences in breeding value in dam group were higher than in daughter group.
Bibliography:L01
1999001456
L10
ISSN:1212-1819