Pregled bibliografske jedinice broj: 1263738
Koncentracija uree u mlijeku kao alat za optimizaciju udjela sirovih proteina u obroku mliječnih koza: put do održive proizvodnje mlijeka
Koncentracija uree u mlijeku kao alat za optimizaciju udjela sirovih proteina u obroku mliječnih koza: put do održive proizvodnje mlijeka // Mljekarstvo, 73 (2023), 2; 85-94 doi:10.15567/mljekarstvo.2023.0202 (međunarodna recenzija, članak, znanstveni)
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Naslov
Koncentracija uree u mlijeku kao alat za
optimizaciju udjela sirovih proteina u obroku
mliječnih koza: put do održive proizvodnje mlijeka
(Milk urea concentration as a tool for
optimising crude protein content in dairy
goat diets: a path to sustainable
milk production)
Autori
Bendelja Ljoljić, Darija ; Prpić, Zvonimir ; Mašek, Tomislav ; Vnučec, Ivan ; Kostelić, Antun ; Benić, Miroslav ; Antunac, Neven
Izvornik
Mljekarstvo (0026-704X) 73
(2023), 2;
85-94
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
alpina koza ; urea u mlijeku ; optimalna vrijednost ; kvaliteta mlijeka ; sirovi protein
(Alpine goat ; milk urea ; optimal value ; milk quality ; crude protein)
Sažetak
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<0.001), and MU concentration from 35.01 to 41.24 mg/100 mL (p<0.001). Based on the calculated inflection point of daily milk yield and protein content in milk, the range of MU concentration from 40.00 to 45.00 mg/100 mL can be considered optimal and is a good indicator of a balanced diet for goats.
Izvorni jezik
Engleski
Znanstvena područja
Poljoprivreda (agronomija)
POVEZANOST RADA
Profili:
Antun Kostelić
(autor)
Neven Antunac
(autor)
Ivan Vnučec
(autor)
Darija Bendelja Ljoljić
(autor)
Miroslav Benić
(autor)
Tomislav Mašek
(autor)
Zvonimir Prpić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus