Koncentracija uree u mlijeku kao alat za optimizaciju udjela sirovih proteina u obroku mliječnih koza: put do održive proizvodnje mlijeka

Autor: Bendelja Ljoljić, Darija, Prpić, Zvonimir, Mašek, Tomislav, Vnučec, Ivan, Kostelić, Antun, Benić, Miroslav, Antunac, Neven
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Popis: Milk urea concentration (MU) has been extensively studied and is often used to evaluate energy and protein balance in dairy cattle diets, but not to this extent in dairy goat diets. The aim of this study was to determine the relationship between MU concentration and crude protein content (CP) in the diet of Alpine goats in order to reduce excessive nitrogen excretion from the organism. For this purpose, 72 goats were randomly divided into three equal groups (24 animals) and fed a concentrate mix containing 14 %, 16 %, and 18 % CP, respectively. The chemical composition of milk samples was determined and the ratio of milk fat to protein was calculated. Statistical analysis of the data was performed using the MIXED procedure (SAS V8 software package). Increasing CP from 14 % to 16 % in the diet increased daily milk yield by 0.4 kg (p
Databáze: OpenAIRE