Naslov
Use of sunflower meal in feed mixtures for fattening chicks. I. Influence on the performance of fattening chicks

Autori
Šerman, Vlasta ; Gojević-Zrnić, Frane ; Dumanovski, Franjo ; Mas, Nora ; Mikulec, Željko ; Melenjuk, Vlado

Izvornik
Veterinarski arhiv (0372-5480) 66 (1996), 1; 13-26

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
chicks ; fattening ; sunflower meal ; amino-acid balance ; energy balance

Sažetak
In trials carried out on 400 fattening chicks of the Jata line, divided into eight groups (one control group and seven experimental groups), the influence of sunflower meal on the body mass, mass gain, feed conversion and mortality were studied. Each of the eight groups was fed over a three-week period on starter mixture, after which they were again divided into three new groups. The newly formed groups (a total of 24) were fed on the finisher mixture during the subsequent four weeks. The experimental groups of chicks fed on mixtures containing sunflower meal, soybean meal or on a mixture of soybean and sunflower meal, were compared with the control group fed on a balanced commercial feed mixture containing soybean meal and fish meal. Feed mixtures differed not onlx in their composition but also in amino-acid and energy value. On the basis of obtained results it was established that the feed mixture with sunflower meal of unbalanced amino-acid and energy composition had a negative effect on body mass gain and feed conversion. In order to make the chicks achieve satisfactory slaughter mass it was necessary to extend their fatteninf period by two weeks (a total of 63 days). Balance energy value produced only slightly better results than results achievedin the group fed on energy balanced mixture, and only energy and amino-acid correction together enabled good results to be achieved in thecontrol group. The same applied to the group of chicks receiving a mixture of sunflower and soybean meal as resorce of protein in the feed. Results of the research indicate that when using sunflower meal in feed mixtures for fattening chicks it is essential first to balance the amino- acid composition of proteins, particulary lysine, in which sunflower meal is deficient and then the energy value. The energy component by itself is insufficient for achieving satisfactory performance.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo

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