Combined use of ionophore and virginiamycin for finishing Nellore steers fed high concentrate diets
نویسندگان
چکیده
منابع مشابه
Energy requirement for maintenance and growth of Nellore bulls and steers fed high-forage diets.
Data from three comparative slaughter experiments with individually fed Nellore bulls (n = 31) and steers (n = 66) were utilized to determine their NEm and NEg requirements when fed high-forage diets. The experimental design provided ranges in ME intake, BW, and ADG for the development of regression equations to predict NEm and NEg requirements. The Nellore bulls (Trial 1) were divided into two...
متن کاملEffect of energy density and virginiamycin supplementation in diets on growth performance and digestive function of finishing steers
OBJECTIVE This study was determined the influence of virginiamycin supplementation on growth-performance and characteristics of digestion of cattle with decreasing dietary net energy value of the diet for maintenance (NEm) from 2.22 to 2.10 Mcal/kg. METHODS Eighty crossbred beef steers (298.2±6.3 kg) were used in a 152-d performance evaluation consisting of a 28-d adaptation period followed b...
متن کاملCarcass Composition and Cuts of Bulls and Steers Fed with Three Concentrate Levels in the Diets
In this paper, weight, carcass dressing, weights of the primary cuts, weights of the physical components of the primary cuts, and weights of the main commercial cuts of 66 Purunã animals, of which 33 were bulls and 33 were steers were evaluated. These animals, with an average age of 19 months at the beginning of the experiment, were finished in a feedlot system during 116 days, and were fed wit...
متن کاملEffect of thymol and carvacrol on nutrient digestibility in rams fed high or low concentrate diets
Published data on the effects of essential oils (EO) on in vivo nutrient digestibility in sheep are contradictory. In 2 experiments, the effect of thymol and carvacrol on nutrient digestibility was studied in sheep fed with high (70%) or low (52%) concentrate diets, using incomplete Latin Square designs. The essential oils were mixed with the concentrate portion of the diet at the rate of 0.0, ...
متن کاملInfluence of malic acid supplementation on ruminal pH, lactic acid utilization, and digestive function in steers fed high-concentrate finishing diets.
Two trials were conducted to evaluate the influence of malic acid supplementation on ruminal fermentation. In Trial 1, six Holstein steers (300 kg) with ruminal cannulas were used in a crossover design experiment to study the influence of malic acid (MA) on ruminal metabolism during glucose-induced lactic acidosis. Treatments consisted of a 77% steam-flaked barley-based finishing diet supplemen...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2013
ISSN: 0103-9016
DOI: 10.1590/s0103-90162013000400002