Izvorni znanstveni članak
The influence of various origins of first calving Simmental and Black-White cows on production and content of milk
Marjan Janžeković
; University of Maribor, Faculty of Agriculture, Maribor, Slovenia
Dejan Janžeković
Jože Smolinger
Sažetak
A total of 1 070 Simmental and Black-White first calving cows and the
same number of mother cows were investigated. The first calving cows originally arrived from Slovenia, the Netherlands, Germany and Denmark. No statistically significant differences were established in the milk production and quality of milk between the first calving cows from abroad compared to the first calving Slovenian cows. Statistically significant higher milk production (8 004 ± 981 kg; P ≤0.001) had mother cows of the imported Black-White compared to the Slovene (6 514 ± 1 142 kg) ones. There were no statistically significant differences, in the milk production and quality of milk, between the imported mothers of first calving cows of Simmental breed comparing with Slovenian mothers of first calving cows of the same breed. The milk production between the mothers and their Simmental daughters had a statistically significant correlation (rp = 0.125; P ≤ 0.01). The higher correlation coefficient for this characteristic was established between the Black-White mothers and their daughters (rp = 0.302; P ≤ 0.001). Among the milk production of first calving cows and protein content in milk a statistically negative significant correlation (rp = -0.198; P ≤ 0.001) was established. This result confirmed that the purchase of more expensive animals with better genetic potential is economically unjustified for the breeder who does not reach intensive technology of basic quality voluminous fodder.
Ključne riječi
cattle; Simmental; Black-White; milk production; protein, fat
Hrčak ID:
1653
URI
Datum izdavanja:
10.10.2004.
Posjeta: 2.491 *