Appropriate selection indices for functional traits in dairy cattle breeding schemes.
Animals
Breeding
/ economics
Cattle
/ genetics
Cost-Benefit Analysis
Dairying
/ economics
Fats
/ analysis
Female
Genotype
Iran
Lactation
/ genetics
Mammary Glands, Animal
/ physiology
Mastitis, Bovine
/ genetics
Milk
/ chemistry
Milk Proteins
/ analysis
Quantitative Trait, Heritable
Reproduction
/ genetics
Selection, Genetic
Software
Udder health
economic gain
genetic gain
response to selection
selection index
Journal
The Journal of dairy research
ISSN: 1469-7629
Titre abrégé: J Dairy Res
Pays: England
ID NLM: 2985125R
Informations de publication
Date de publication:
Feb 2019
Feb 2019
Historique:
pubmed:
7
12
2018
medline:
16
4
2019
entrez:
7
12
2018
Statut:
ppublish
Résumé
The objective of this study was to establish different single or multiple trait selection indices to calculate genetic and economic gains by combining some production, reproduction and udder health traits in a population similar to the overall practical situation in Iran, with and without imposing restrictions on genetic change for some traits. The SelAction software was used to perform the analyses based on selection index theory through a deterministic model. Results indicated that among established indices, the index that showed the highest genetic gain for milk yield did not maximize the total genetic and economic gains. Rather, the index that included all production, reproduction and udder health traits yielded the highest genetic and economic gains. When we placed restriction on the selection indices, the economic gain decreased and the amount of reduction depended on the heritability and the correlation of restricted trait(s) with other traits. Generally, regarding the economic genetic gain per generation, the indices based on records of 200 offspring were 4.819% more efficient than those that used information of 100 offspring.
Identifiants
pubmed: 30520398
pii: S0022029918000821
doi: 10.1017/S0022029918000821
doi:
Substances chimiques
Fats
0
Milk Proteins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM