Fifty F1 Limousin x Nellore bulls were allotted to ten treatments, with five concentrate levels (25; 37.5; 50; 62.5 e 75%) and two diet protein balance methods (one isoprotein and the other changing protein as diet energy changed). The roughage used was Coastcross grass hay (Cynodon dactylon). After the slaughter, all animal body parts were weighted and sampled. The samples were dried, most of the fat was extracted with ether, grinded, and the concentrations of macrominerals were determined. Ca, P, […]

The experiment was run at the Agronomic Experimental Station of the Federal University of Rio Grande do Sul, located in the district of Eldorado do Sul, Brazil. The objective of the study was to evaluate the effect of the date of early (01/05/99) or conventional (03/26/99) weaning on the reproductive performance of multiparous beef cows during two mating seasons, 98/99, and the subsequent, 99/00. Fifty cows had their calves weaned with an average age of 91 days old and a […]

Fifty F1 Limousin x Nellore bulls were allocated in ten treatments, with five concentrate levels (25, 37.5, 50, 62.5, and 75%) and two diet protein balance methods (one isoprotein and the other changing protein as diet energy changed). Dry matter intake (DMI) required to maintain the energy balance was calculated dividing the metabolizable energy intake (MEI) required for maintenance (112.89 kcal/kg EBW0.75), by diet ME concentration (kcal/kg of DM), in each treatment. The net energy concentration for maintenance (NEm) of […]

This work was conducted with the objective to study the quantitative and qualitative traits of carcass and meat of two Hereford categories, two years old steers and cull cows with average age of eight years. Twelve animals of each categorie were randomly taken from the same herd, and feedlot finished during a 112 days period, being the roughage (sugar cane) : concentrate ratio of 69 : 31 during the first phase of 56 days and 57 : 43 during the […]

Information about cultivars behavior obtained from only one local and year may not be enough for a cultivar recommendation due to the genotype x environment interaction occurrence. Then, cultivars indication based on stability and repeatability is more consistent because it enables previewing theirs performance under many environments. This work studied the adaptability and repeatability of dry matter production of seven sorghum cultivars to be used as silage. Data came from two sites (Coronel Pacheco and Lavras, Minas Gerais) and were […]

The effect of prostaglandin (PGF2a) vs CIDR and eCG (equine chorionic gonadotrophin) on follicular dynamic of wave 1 and its relation with P4 and E2 plasma concentrations were investigated in cyclic ewes. Fourteen Bergamascia ewes were used, Group 1 (G1) synchronized by two i.m. injections of PGF2a

Studies of induced spawning of piabanha, Brycon insignis, were developed from January to February/96 and February/97, with 3 to 5 years old individuals maintained in captivity. The selected females presented swollen abdomen and red genital papilla, 60% of oocytes with eccentric germinal vesicle. Thirty-three females were induced to spawning through a single dose of 5 IU/g of hCG (human Chorionic Gonadotropin); 17 females received two application: 0.5 and 5 mg/kg of crude carp pituitary extract in an interval of 10 […]

Mixed pastures of Brachiaria decumbens with Stylosanthes guianensis cv. Mineirão and B. brizantha cv. Marandu with S. guianensis cv. Mineirão, under three stocking rates (0.8, 1.2 and 1.6 AU/ha) were evaluated in regard to the animal daily gain and liveweight gain per ha, in the Brazilian Savanna, in order to suggest the most adequate management. A randomized block in a split-plot design with two replicates was used. The plots treatments were constituted of a 2×3 factorial, two grasses (Brachiaria decumbens […]

It was aimed to evaluated the nutrients intake and digestibility of growing and finish Nellore bulls diets. It were used 32 non-castrated Nellore bulls, with 240 kg, confined in individual stalls, in the growing phase, and 16 animals with 360 kg in the finishing phase. The treatments were four concentrate levels (20, 40, 60, and 80%) and two percentages of crude protein (15 and 18%) in the diets. It was used an experimental design randomized, with four replicates, in the […]

The objectives of this research were to identify the nitrogen level that promotes the highest animal production per ha and to test the possible effect on the individual animal performance on triticale and ryegrass pasture. The sowing occurred on April 21 of 1997, later on subjected to the following treatments: 0, 150, 300 and 450 kg/ha of nitrogen divided in five applications. Nellore, Charolais heifers and their crosses, with initial average weight of 154 kg were used. The grazing period […]