The efficiency of milk replacer in calf feeding

Abstract

The trial was conducted on three groups of Frisian calves to investigate the usefulness of milk replacers. Experiment lasted 30 days. The control group received full-fat milk, the first experimental group received domestic milk replacer and the second experimental group received imported milk replacer. All groups were fed ad lib with concentrate mixture with 18% crude protein lucerne hay and water. During the experimental period the biggest growth and the best feed conversion ratio was achieved in the calves in control group which received cow's milk. Calves that received domestic milk replaced had intermediate result while the calves that received imported milk replacer had the lowest performances.

Ispitivanje efikasnosti korišćenja zamena za mleko u ishrani teladi, u tečnom periodu ishrane (0-60 dana uzrasta), izvedeno je na 30 teladi crno-bele rase, u tipu holštajna, podeljenih u tri grupe po 10 grla. Kontrolna grupa (K) je napajana punomasnim mlekom, prva ogledna grupa (A) zamenom za mleko domaće proizvodnje a druga ogledna grupa (B) zamenom iz uvoza. Koncentracija suve materije u zamenama za mleko iznosila je 12,5% i davana je teladima u količini od 6 lit/dan. Sve tri grupe dobijale su po volji koncentrat (17% ukupnih proteina), seno lucerke i vodu. U periodu napajanja, najveći dnevni prirast (547g) ostvarila su telad K grupe, koji je za 112g ili 25,75% bio veći od prirasta A grupe (435g) a za 124g ili 29,31% od prirasta B grupe (423g). Utvrđene razlike u prirastu bile su statistički značajne (p lt 0.05) Iskorišćavanje hrane bilo je najbolje u teladi napajane kravljim mlekom. Telad napajana domaćom zamenom za mleko imala su intermedijarnu vrednost iskorišćavanja hrane (između K i B grupe teladi).