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EFFECT OF DIFFERENT LEVELS OF CRUDE PROTEIN AND METABOLIC ENERGY ON THE PERFORMANCE OF BROILER
Zvonimir Steiner
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Matija Domačinović
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Zvonko Antunović
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Đuro Senčić
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Marcela Šperanda
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Zdenko Steiner
; Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Jasenka Wagner
; Sveučilište J. J. Strossmayera u Osijeku, Medicinski fakultet, Osijek, Hrvatska
Sažetak
The research was conducted on broilers Ross 308, in order to investigate the influence of different levels of raw proteins and metabolic energy on production results of fattened chicken. The experiment was conducted on 600 one-day broilers, divided into three main groups, with two repetitions. Group K was fed on energy and protein level 100 %, P1 on level 93.5%, and P2 on level 87%. Proportion between energy and proteins in starter- mixtures (1-3 weeks) was 1:570, and in finisher (4-6 weeks) 1:650. Greater weight gain and body mass were realized in groups of chicken that were fed higher ratio of raw proteins and metabolic energy in fodder mixtures. The price value of 1kg of weight gain insignificantly rose with lowering the level of raw proteins and metabolic energy in fodder
mixtures. Biochemical indicators in chicken serum showed lower organism encumbrance in groups fed with fodder mixtures with lower level of raw protein and metabolic energy.
Ključne riječi
crude protein; metabolic energy; chicken; production results
Hrčak ID:
39712
URI
Datum izdavanja:
6.5.2009.
Posjeta: 1.560 *