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Milk production comparison of the Holstein and Czech Mottled cattle in the same breeding conditions
KOTOVÁ, Lucie
The aim of the work was processing a literary overview of the Holstein and Czech Mottled cattle. Next one was processing and evaluation of selected influences first calving age, lactation order, genotype, and pedigree on milk yield of cattle breeds kept in the same conditions. During evaluation of milk yield in the whole pedigree observed set, it was discovered the Holstein milk cows amount to higher milk yield and average 7 676 kg of milk with 4,02% fat and 3,44% protein in comparison with the Czech Mottled milk cows with 6 783 kg of milk with 4,06% fat and 3,44% protein per lactation. The difference of draw milk quantity between breeds was confirmed in statistically highly significant level (p 0,001). But the fat and protein difference was not significant. After sorting out of genotype set, a statistically significant difference of milk yield was not proved in pedigrees of the Czech Mottled or Holstein milk cows. The difference between breeds with genotype shared blood of 88% or more was confirmed in statistically highly significant level (p 0,001) the Czech Mottled (6 843 kg) versus Holstein breed (7 675 kg). A milk yield per lactation order was highest during the third lactation for both the Holstein (8 752 kg) and Czech Mottled breed (7 576 kg). The difference between breeds during the third lactation was confirmed in statistically highly significant level (p 0,001). And the influence of the first calving age on milk yield of the first lactation was not proved.
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