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Selection index for bulls of Holstein cattle in the Czech Republic
selection index Holstein cattle bulls
2015/6/1
Complex selection indexes are proposed for bulls of Holstein cattle in the Czech Republic. Partial breeding values for milk performance, fertility and body conformation are combined in the index. Conf...
Effect of Particle Size of Forage in the Dairy Ration on Feed Intake, Production Parameters and Quantification of Manure Index
Ration Particle Size Manure Index Alfalfa Hay Lactating Dairy Cows
2016/5/4
The objectives of this study were to measure particle size and evaluate the effect of increasing alfalfa hay particle size on production characteristics in lactating Holstein dairy cows. Ninety multip...
Persistency of Laying Strain Building by Index Selection Including Oviposition Time as Selection Trait in Laying Hen
laying hen strain building selection oviposition time persistency of laying
2009/7/31
In this study a selection experiment was carried out in order to investigate the effectiveness of index selection including oviposition time as a selection trait for persistency of laying strain build...