Izvorni znanstveni članak
The influence of roughage quality on milk production in the Ptuj region
Marjan Janžekovič
; Visoka kmetijska škola, Vrbanska 30, 62000 Maribor, Slovenija
Sažetak
This paper presents the results of milk production analysis at ten farms in the Ptuj region (located in the North-East of Slovenia), where the milk production of Simmental cattle is on average lower than in other Slovenia regions. The quality of roughage and the quantity of roughage production are investigated together with their effects on milk production. It is proved that in feed rations the dry matter/energy input/proteins ratio is not properly balanced. There is also the lack of vitamin /mineral mixtures and salt The insufficient production of roughage and feed concentrate on the farms prevents the optimum exploitation of milk cows production potential in this region, which, in standard lactation, between 1987 and 1992 produced 3,818 kg of milk fat content beeing 3.74%. The average percentage of milk proteins from 1990 to 1992 was 3.17%.
Ključne riječi
roughage; feed rations; lactation; milk production
Hrčak ID:
95045
URI
Datum izdavanja:
16.6.1995.
Posjeta: 1.260 *