The influence of health problems of milk cows on farm on the quantity of sold milk

V raziskavi smo proučevali tehnologijo reje krav molznic, v kateri so zdravstvena obolenja zelo problematična. Posledično je zaradi tega manj namolzenega mleka in manjši dohodek pri prodaji mleka. Zdravljena krava je v karenci, mleko takrat ni primerno za prehrano ljudi, večji je tudi izdatek za veterinarske storitve. Kontrola mlečnosti AT4 rejcu omogoča, da lahko sproti določa krmne obroke glede na doseženo prirejo. Želeli smo ugotoviti pojav zdravstvenih obolenj pri kravah molznicah na kmetiji. V letu 2008 je bilo 50 obolenj, od tega je bilo kar 17 mastitisov in 10 poporodnih parez. V letu 2009 pa je bilo 24 obolenj, od tega je bilo 7 bronhitisov in 6 mastitisov. Delež obolenj v letu 2008 je bil 11,71 %, v letu 2009 pa 6,49 %. Leta 2008 je bilo povprečno 1,52 zdravljenj na kravo, leta 2009 pa je bilo povprečno 0,81 zdravljenj na kravo. Ugotovili smo, da je bilo 6344,9 litrov oporečnega mleka v letu 2008, v letu 2009 pa le 3026,6 litrov. Ugotovili smo tudi, da je bilo v letu 2008 za 2245,75 € manjši dohodek zaradi zdravstvenih obolenj, v letu 2009 pa za 831,45 €, upošteval se ni noben izdatek. Izračunali smo tudi vpliv oporečnega mleka na prodano mleko. V letu 2008 je bil 2,74 % vpliv. V letu 2009 pa je bil vpliv oporečnega mleka na prodano mleko 1,54 %.The research investigated the technology of milk cows breeding, in which the health problems present a serious difficulty. Due to them, there is less milking and the income from selling the milk is lower. A treated cow is in waiting period, milk is not appropriate for consumptionthe veterinary service costs become higher. The AT4 milkiness control enables the breeder to determine the feeding rations according to attained increase. We wanted to find out the appearance of health problems by milk cows on a farm. In 2008, there were 50 cases of health problem, 17cases of mastitis and 10 afterbirth pareses. In 2009, there were 24 cases of health problem, 7 cases of bronchitis and 6 cases of mastitis. The share of health problems in 2008 was 11,71% and in 2009 it was 6,49%. In 2008, there was approximately 1,52 treatment per cow and in 2009 there was approximately 0,81 treatment per cow. We also found out that in 2008 there were 6344,9 litres of contaminated milk and only 3026,6 litres in 2009. Due to health problems, the income was lower for 2245,75 € in 2008 and for 831,45 € in 2009, none of the expenditures were taken into consideration here. We calculated the influence of the contaminated milk on sold milk. In 2008, the influence was 2,74% and in 2009 it was 1,54%