The effect of premixes with different mineral and vitamin levels on the growth rate of replacement steers in the suck­ling period

• Published in: Зоотехническая наука Беларуси (Belarus). Zootechnical Science of Belarus Vol. 41
• Main Author: Nevar, A.A.,National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
• Format: Publication
• Language: Russian
• Published: 2006
• Subjects: ADDITIF AUX ALIMENTS DES ANIMAUX; ADITIVOS DE PIENSOS; ALIMENTACION DE LOS ANIMALES; ALIMENTATION DES ANIMAUX; ANIMAL FEEDING; BELARUS; BLOOD COMPOSITION; BODY WEIGHT; BOVIN; CALVES; CATTLE; COMPLEMENT ALIMENTAIRE; COMPOSICION DE LA SANGRE; COMPOSITION DU SANG; CONTENIDO MINERAL; FEED ADDITIVES; GANADO BOVINO; http://www.fao.org/aos/agrovoc#c_1219; http://www.fao.org/aos/agrovoc#c_1391; http://www.fao.org/aos/agrovoc#c_15846; http://www.fao.org/aos/agrovoc#c_2827; http://www.fao.org/aos/agrovoc#c_33237; http://www.fao.org/aos/agrovoc#c_33996; http://www.fao.org/aos/agrovoc#c_34864; http://www.fao.org/aos/agrovoc#c_429; http://www.fao.org/aos/agrovoc#c_4848; http://www.fao.org/aos/agrovoc#c_7834; http://www.fao.org/aos/agrovoc#c_963; MINERAL CONTENT; MINERAL NUTRIENTS; NUTRIENTES MINERALES; OLIGO-ELEMENT; OLIGOELEMENTOS; PESO CORPORAL; POIDS CORPOREL; SUBSTANCE NUTRITIVE MINERALE; SUPLEMENTOS; SUPPLEMENTS; TENEUR EN ELEMENTS MINERAUX; TERNERO; TRACE ELEMENTS; VEAU

In increasing of genetic potential of dairy cattle efficiency the important role is allocated to cultivation and use of high-value steers. The need in steers makes 700-800 heads in one year. However on elevers annually on development and reproductive abilities culls bullocks up to 20%. For increase of elevers and state pedigree enterprises productivity it is necessary to know and purposefully to use regularities of animal growth and development, formation of their reproductive qualities, influence of various factors on these processes. The priority role in this direction is allocated to development and perfection of young steers feeding system, since the first month of life. In developed conditions more rational is development of recipes of mixed fodders, substitutes of dairy forages and vitamin-mineral additives with inclusion of local sources of raw material (rape and linen oil cakes and oil-seed meal, new varieties of peas and lupine with the lowered contents of nutrients, etc.). Steers rations being supplemented with mineral-vitamin additive resulted in growth rate improvement. The highest daily gain was 920 g, which was 7,9% higher than controls. The lowest feed expenses where in the second group - 4,56 f.u./kg of gain. The second treated group had the highest blood indices