The influence of roughage quality on milk production in the Ptuj region

Analizirana proizvodnja mlijeka na 10 seoskih gospodarstava općine Ptuj, gdje zaostaju prosječne količine proizvedenog mlijeka simentalske pasmine krava muzara za ostalim regijama Slovenije. Istraživana je kvaliteta, pripremljene količine voluminozne krme i njihov utjecaj na proizvodnju mlijeka. Ustanovljeno je, da u krmnim obrocima nisu izbalansirani: suha tvar, energija i bjelančevine. Obrocima nedostaju smjese mineralnih tvari i vitamina te stočna sol. Nedovoljna, proizvodnja dovoljnih količina osnovne voluminozne i koncentrirane krme na gospodarstvima onemogućuje maksimalno iskorištavanje proizvodnog potencijala krava muzara, koje su u razdoblju od 1987. do 1992. proizvele 3318 kg mlijeka s 3,74% mliječne masti u standardnoj laktaciji. Prosjek mliječnih bjelančevina praćen u razdoblju od 1990. do 1992. iznosio je 3,17%.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%