The effect of nitrogen on the root system of the species Panicum maximum Jacq. cv. IPR-86 Milênio, under grazing, was evaluated. The N rates were 0; 150; 300 and 450 kg/ha.year. The root density was evaluated during pre-grazing at five years of successive N application, in three depths (0-10; 10-20 and 20-40 cm) and the root growth at 7, 14, 21, and 35 days after grazing. The grazing method adopted was rotational stocking. Root length and root mass densities in […]

Testosterone levels to the body weight, relative and absolute testes weights, tunica albuginea thickness, germinative epithelium height, diameter and meiosis picture numbers of seminiferous tubules of 65 male quails were evaluated from June to October. The birds were grouped in cages (6 birds/cage) and lodged in a shed during all experimental period. The testis morphometric analysis was carried out from 60 days to 180 days old. The total testosterone plasmatic levels were dosed by radioimmunoassay method with antibody radioactivity marked. […]

The objectives of this study were to evaluate the existence of a relationship between tiller size and tiller number in grazed palisadegrass swards and to verify if adjustments related to changing in leaf area index (LAI), leaf area:tiller volume ratio (R), and tiller bulk density in the prediction equation of the response would explain eventual slope deviation from the theoretical predict slope. Treatments corresponded to four sward “steady state” conditions (10, 20, 30, and 40 cm sward surface heights), maintained […]

The performance of calves fed after weaning until slaughter with high moisture grains silage or dry ground grains of corn or sorghum was evaluated, for production of pink meat veal. Thirty Holstein calves were allotted to a complete randomized blocks experimental design with five blocks and six concentrate rations with similar contents of protein (18.5% CP) and energy (3.2 Mcal ME/kg DM), formulated with dry ground corn (GC), high moisture corn silage (HMCS), dry ground sorghum with tannin (GSWT), high […]

The effect of two soil handling systems was evaluated (without furrow and with furrow), three spacing (1.0 m × 1.5 m; 1.5 m × 2.0 m and 2.0 m × 2.0 m) on the quality and the productivity of rooster tree 60 days after cut. It was used a split-plot (space and time) factorial arrangement in a randomized block design. Factors were two soil handling systems and three planting densities (2 × 3) with five replications per treatment. Plants chosen […]

This study was conducted to evaluate the effect of different levels of digestible lysine in diets on the performance of piglets from 6 to 15 kg. One hundred and twenty piglets (80 castrated males and 40 females) were used. The piglets were allotted to a completely randomized block design, with five treatments (1.06, 1.16, 1.26, 1.36, and 1.46% of digestible lysine), eight replicates and three animals per experimental unit, kept in thermoneutral environment. The dietary level of digestible lysine did […]

It was evaluated four crude protein (CP) levels in diets considered as commercial fed to barrows in the growing and finishing phases. A total of 48 barrows, from the same genetic strain, averaging initial weights of 30.8 ± 0.12 kg (growing phase) and 61.2 ± -0.89 kg (finishing phase), segregated in the production system, was used. The animals were allotted to randomized blocks design, composed of four treatment (level of CP) and six replications and two animals per experimental unit. […]

This study was carried out to evaluate the effect of total replacement of corn by sorghum and crecent levels of slaugherhouse poultry oil (PO) on performance and carcass characteristics and yield of broilers. A total of 260 chicks one day-old, males, Cobb strain, was allotted to the following treatments: a corn based reference ration, and four sorghum based diets with the inclusion levels of 0, 2.5, 5, and 7.5% of PO according to the growing phases (from 1 to 7 […]

This work aimed at to characterize the effects of the dependent aspects of the genetics of the calves marketed in the state of Rio Grande do Sul, as form of verifying the influence of these in the sale price. They were collected at 13 municipal auction of calves in the State, referring data to the predominant genetic group, size and musculature of the animals of 739 lots of animals corresponding to 11,986 heads. They were evaluate for the price obtained […]

A new cultivar of Panicum maximum (Massai) was evaluated for commercial release, at the Embrapa Beef Cattle, Campo Grande, MS, Brazil, from November 1993 to April 1999. At establishment, 2,7 t/ha of lime, 400 kg/ha of 0-20-20 and 50 kg/ha of FTE were applied. Maintenance fertilizer was 200 kg/ha of 0-20-20 NPK and 50 kg/ha N, annually. The Panicum maximum cultivars tested were Mombaça and Massai. The experimental design was a randomized complete block with two treatments and two replicates. […]