Composition of raw milk from conventional and organic dairy farming
2016
Kučević, Denis (Faculty of Agriculture, Novi Sad (Serbia). Department of Animal Science) | Trivunović, Snežana (Faculty of Agriculture, Novi Sad (Serbia). Department of Animal Science) | Bogdanović, Vladan (Faculty of Agriculture, Belgrade –Zemun (Serbia). Department of Zootechniques) | Čobanović, Ksenija (Faculty of Agriculture, Novi Sad (Serbia). Department of Animal Science) | Janković, Dobrila (Faculty of Agriculture, Novi Sad (Serbia). Department of Animal Science) | Stanojević, Dragan (Faculty of Agriculture, Belgrade –Zemun (Serbia). Department of Zootechniques)
Possible differences between composition of raw milk due to dairy farming system (organic vs conventional) as well as seasonal variations were investigated. The samples were analysed during one year. A total of 6.782 samples of raw milk were collected (4.496 from organic farming). Dairy farms were located in the northern part of Republic of Serbia (Province of Vojvodina). The principle of analysis of raw milk samples was in accordance with the methodology by mid- infrared spectrometry and flow cytometry. The fixed effect of system of farming and season (winter, spring, summer and fall) have shown a high statistical significance (P < 0.01) on all examined milk parameters except fat, total solids and somatic cell count, where the impact was slightly lower (P < 0.05). Significant difference wasn't found in number of bacterial colonies (P > 0.05). Composition of milk is also affected by a number of other factors, therefore it is recommended to involve factors such as nutrition of dairy cows, breed and farm management.
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