Original scientific paper
https://doi.org/10.33128/k.63.1.1
Comparison the efficiency of supplementary feed mixtures containing NPN compounds in cattle fattening
Zvonimir Steiner
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Josip Novoselec
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Željka Klir Šalavardić
orcid.org/0000-0003-4078-6864
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Ivana Prakatur
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Ivan Balentić
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Mario Ronta
orcid.org/0000-0003-0858-7566
; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Abstract
The aim of the study was to compare the effect of supplementary mixtures with higher and lower protein content, which contain slow-release non-protein nitrogen (NPN) compounds in cattle fattening on production indicators and cost price. In the experiment there were 24 female crossbreeds in the Belgian Blue cattle type that were evenly divided into two groups. The duration of the experiment was 213 days. During the experiment, body weight, average daily gain and feed conversion were monitored as well as, the cost price of gain. Four weighings were performed, of which two weighings were individual while the other two weighings were group weighings. Cattle were fed TMR meals of uniform nutritional value that included supplemental mixtures of different protein value containing slow-release NPN compounds. A supplemental mixture with a higher protein content was included in the P1 group meal, while the P2 group meal contained a mixture with a lower protein value. The results at the end of the study showed slightly higher average daily gains (1.27: 1.18 kg / day), in favor of the P1 group. Total feed conversion was slightly lower in the P1 group compared to the P2 group (6.4: 6.6 kg / kg), while the cost price per unit of body weight gain was uniform throughout the study. At the end of the research it can be concluded that the use of NPN compounds with careful balancing of meals can achieve profitable and safe meat production.
Keywords
NPN compounds; cattle fattening; urea; production traits; cost price
Hrčak ID:
275392
URI
Publication date:
20.4.2022.
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