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https://doi.org/10.15567/mljekarstvo.2019.0401

Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia

Marija Špehar orcid id orcid.org/0000-0001-7600-5009 ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Danijel Mulc ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Zdravko Barać ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Boro Mioč ; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska 25, 10000 Zagreb, Croatia
Ante Kasap ; University of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska 25, 10000 Zagreb, Croatia


Puni tekst: engleski pdf 199 Kb

str. 215-221

preuzimanja: 528

citiraj

Puni tekst: hrvatski pdf 199 Kb

str. 215-221

preuzimanja: 556

citiraj


Sažetak

The objective of this study was to estimate genetic parameters for daily milk yield (DMY), fat (FC), and protein content (PC) using 329.022 test-day records of 23.756 Alpine does. Single trait repeatability animal model was applied. Parity, litter size, season, and lactation stage (Ali-Schaeffer’s curve) were fitted in the fixed, while herd, herd-test-day, permanent environment (within lactations) and additive genetic effect in the random part of the model. Variance components were estimated using Residual Maximum Likelihood Method in the VCE-6 program. Additive genetic effect explained 23 %, 16 % and 25 % of DMY, FC and PC variability which is in general agreement with numerous previous reports for dairy goat breeds. Among the non-genetic effects, herd explained 24 %, 12 %, and 9 %, herd-test-day 17 %, 29 %, and 30 %, and permanent environment 16 %, 3 %, and 5 % of DMY, FC and PC variability, respectively. The estimated parameters and developed single trait repeatability test-day models will serve as a basic tool in BLUP based genetic evaluation of Alpine breed in Croatia.

Ključne riječi

Alpine breed; dairy traits; genetic parameters; test-day model

Hrčak ID:

225859

URI

https://hrcak.srce.hr/225859

Datum izdavanja:

4.10.2019.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.970 *