Economic evaluation of three systems of alimentation used in finishing lambs

Eighteen castrated male lambs of the Texel breed were randomly diestribut3ed among the following treatments: T1 = confinement; T2 = pasture with supplementation; T3 = pasture without supplementation. At 144 days of age the lambs were slaughtered after a 12hr fast. Live weight at slaughter and warm carcass weight were lower (P≤0.05) for T3 lambs compared with those confined or supplemented at pasture, which resulted in lower gross income. Profitability in relation to liveweight was higher (P≤0.05) for the lambs on pasture without supplementation relative to T1, whereas the profitability in relation to carcass weight numerically was higher for both T1 and T2 than for T3. The availability of herbage dry matter at the end of the experiment was 326% higher for the supplementation treatment than without supplementation (T2 vs. T3). (Portuguese

Bird community in a forest patch isolated by the urban matrix at the Sinos River basin, Rio Grande do Sul state, Brazil, with comments on the possible local defaunation

We compared the avifauna recorded in a recent survey in an urban park (Parque Municipal Henrique Luís Roessler, Parcão) and surroundings, Novo Hamburgo, RS, with past data, to evaluate the possible alterations in species composition over time. Of the 265 species compiled as original elements of that region, 114 were found at Parcão. Among forest species, 37% were considered locally extinct. The most affected guild was the large frugivores, with nine extinct species and one survivor (Trogon surrucura). Birds highly sensitive to disturbance as well as endemic species were the most extinguished. The possible causes for this loss are fragmentation, hunting and environmental changes. The diversity today is threatened, thus conservation measures are necessary in that region. The most important actions are: maintenance of ecological corridors, protection of natural remnant areas and the establishment of protected areas

Bird community in a forest patch isolated by the urban matrix at the Sinos River basin, Rio Grande do Sul state, Brazil, with comments on the possible local defaunation

We compared the avifauna recorded in a recent survey in an urban park (Parque Municipal Henrique Luís Roessler, Parcão) and surroundings, Novo Hamburgo, RS, with past data, to evaluate the possible alterations in species composition over time. Of the 265 species compiled as original elements of that region, 114 were found at Parcão. Among forest species, 37% were considered locally extinct. The most affected guild was the large frugivores, with nine extinct species and one survivor (Trogon surrucura). Birds highly sensitive to disturbance as well as endemic species were the most extinguished. The possible causes for this loss are fragmentation, hunting and environmental changes. The diversity today is threatened, thus conservation measures are necessary in that region. The most important actions are: maintenance of ecological corridors, protection of natural remnant areas and the establishment of protected areas