The effect of digestibility of maize hybrids on production performance of fattening young cattle

Abstract

The effects of use of silage made from 4 maize hybrids (A, B, C and) of different dry matter digestibility (DM) on production performance of fattening cattle were investigated. Trial was carried plan on 60 male cattle of Holstein-Friesian Black and White breed, divided into 4 groups of 15 heads of each. Nutrition trial lasted 84 days. DM digestibility of maize hybrids used in this nutrition trial established in vitro was 58.38; 67.57; 60.74 and 61.91%, realized average daily gains of cattle were 813; 884; 816 and 836 grams and established differences were significant (A,C P lt 0.05 and A,B P lt 0.01). Silage digestibility established by indirect method with Cr2O3 was 65.64; 76.10; 70.90 and 72.78 % and differences were also significant (A,B P lt 0.01and A,C P lt 0.05). Differences in in vitro digestibility of dry matter of maize hybrids were in the amount of 9.2 percent points (67,57:58,38%) resulted in greater body mass of young cattle in average by 6,73 kg per head, i.e. higher daily gain of young cattle by 71 grams or 8,7%. Results of these researches indicated that dry matter digestibility of maize hybrids is extremely significant parameter of nutritive value.

Ispitivani su efekti korišćenja silaža 4 hibrida kukuruza (A, B, C i D) različite svarljivosti suve materije (SM) na proizvodne rezultate tovne junadi. Ogled je izveden po šemi potpuno slučajnog plana na 60 muških junadi holštajn frizijske crno - bele rase, raspoređene u 4 grupe od po 15 grla u svakoj. Ishranbeni ogled trajao je 84 dana . Svarljivost SM hibrida kukuruza korišćenih u ishranbenom ogledu utvrđena in vitro metodom iznosila je 58.38; 67.57; 60,74 i 61.91% ostvareni su prosečni dnevni prirasti junadi od 813; 884; 816 i 836 grama a ispoljene razlike bile su signifikantne (A,C P lt 0.05 i A, B P lt 0.01) Svarljivost silaža utvrđena indirektnom metodom sa Cr2O3 iznosila je 65.64; 76.10; 70.90 i 72.78 % a razlike su takođe bile signifikantne (A, B P lt 0.01 i A,C P lt 0.05). Razlike u in vitro svarljivosti suve materije od hibrida kukuruza od 9.2 procentna poena (67,57:58,37%) u toku 84 dana ogleda rezultirale su u većoj telesnoj masi junadi u proseku za 6,73 kg po grlu, odnosno većim dnevnim prirastom junadi od 71 gram ili 8,7%.