The effect of bull sire provenance on production traits of Simmental cows
The aim of the present study was to obtain relevant results related to the basic indicators of fertility and milk yield of Simmental cows, in production conditions on farms of agricultural producers, using appropriate mathematical and statistical procedures, i.e. to determine the influence of bull s...
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Veröffentlicht in: | Biotechnology in animal husbandry 2017, Vol.33 (1), p.27-36 |
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Zusammenfassung: | The aim of the present study was to obtain relevant results related to the
basic indicators of fertility and milk yield of Simmental cows, in production
conditions on farms of agricultural producers, using appropriate mathematical
and statistical procedures, i.e. to determine the influence of bull sires
originating from Serbia, Austria and Germany on the implementation of the
main breeding program and improvement of production traits of Simmental cows
on the territory of Sumadija district. The study of the effect of bull sires
who are originally from Serbia, Austria and Germany on performance traits of
Simmental cows included a total of 303 cows in first three lactations. Milk
production of cows descendents of bulls from the German population was higher
compared with the production of cows originating from Austria in the first
lactation by 58.29 kg and in the third by 67.72 kg, but in the second it was
lower by 12.31 kg. The variability of age at first calving ranged from 766.93
(cows progeny of domestic bulls) to 813.06 days (cows progeny Austrian
bulls). Average duration of service period had the interval of variation of
86.80 in cows from domestic bulls in the third lactation to 109.88 days in
cows originating from Austrian bulls in the first lactation. |
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ISSN: | 1450-9156 2217-7140 |
DOI: | 10.2298/BAH1701027P |