Productivity, milk composition and milk quality of cows fed maize silage covered with oxobiodegradable film
Authors
Piotr SZTERK
Biological-chemical Laboratory, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Bydgoszcz, Poland
Piotr DORSZEWSKI
Division of Animal Nutrition, Department of Animal Science, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Bydgoszcz, Poland
Małgorzata GRABOWICZ
Division of Animal Nutrition, Department of Animal Science, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Bydgoszcz, Poland
Lucyna PODKÓWKA
Division of Animal Nutrition, Department of Animal Science, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Bydgoszcz, Poland
Iwona ZAREMBA
Division of Animal Nutrition, Department of Animal Science, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Bydgoszcz, Poland
The aim of the study was to determine if oxobiodegradable film can be used as an alternative to standard film for silage making in agricultural practice. Whole-crop maize silage covered with oxobiodegradable film was fed as a component of partly mixed ration (PMR) for dairy cows. The oxobiodegradable coating used to cover the silage heap ensured that the fermentation process was normal, as evidenced by the quality parameters (pH 3.8, 72 hours of aerobic stability) and chemical composition of the silages. Fodder covered with biodegradable material contained less ammonium nitrogen than silage with standard foil (55.3 vs. 66.63 g·kg-1 N total, respectively). The concentration of lactic acid was also lower (77.75 vs. 89.65 g·kg-1 dry matter). Feeding whole-crop maize silage covered with oxobiodegradable film had no adverse effect on productivity (daily 30.65 vs. 31.17 kg fat corrected milk – FCM respectively), composition (protein – 3.33 in the experimental group vs. 3.3% in the control group, fat – 3.89 vs. 3.79%) and some technological suitability of milk.
