Consumo e desempenho de ovinos alimentados com silagens de cana-de-açúcar tratadas com óxido de cálcio e cloreto de sódio / Intake and performance of lambs fed with sugarcane silages treated with whitewash and sodium chloride

Avaliaram-se o consumo e o desempenho de ovinos alimentados com silagens de cana-de-açúcar tratadas com óxido de cálcio (CaO) e cloreto de sódio (NaCl). Utilizaram-se sete tratamentos: controle (silagem sem aditivo), silagens com 0,5; 1,0 e 1,5% de CaO e silagens com 0,5; 1,0 e 2,0% de NaCl, com quatro repetições. Os animais consumiram maior quantidade de matéria seca e de nutrientes digestíveis totais quando se adicionou 0,5% de NaCl ou ainda 1,0 e 1,5% de CaO. Quanto à fibra em detergente neutro e à proteína bruta, observou-se maior consumo quando se adicionou 0,5% de NaCl ou 1,0% de CaO. Não foi observado efeito da dieta sobre o ganho médio diário de peso. A adição de 0,5% de cloreto de sódio e 1,0% de óxido de cálcio à silagem de cana-de-açúcar resultou em aumento no consumo e melhora no desempenho de ovinos.

The intake and performance of lambs fed with sugarcane silages treated with whitewash and chloride sodium were evaluated. Seven treatments were used: untreated silage (control); silages treated with 0.5; 1.0 and 1.5% of CaO (whitewash); and silages treated with 0.5; 1.0 and 2.0% of NaCl, with four replicates per treatment. The animals were fed a higher amount of dry matter and total digestible nutrients when the sugarcane silages were treated with 0.5% of NaCl, 1.0 and 1.5% of CaO. The intake of neutral detergent fiber and crude protein increased when the lambs were fed silages treated with 0.5% of NaCl and 1.0% of CaO. The average daily gain did not differ among treatments. The inclusion of 0.5% of sodium chloride and 1.0% of whitewash in sugarcane silages increased the intake and improved the performance of lambs.

[A comparative study of the incidence of sudden death from Chagas' disease in Uberaba in the years 1980 and 1990]. / Estudo comparativo da freqüência da morte súbita inesperada por doença de Chagas, em Uberaba, nos anos de 1980 e 1990.

A comparison was made between the years 1980 and 1990 for the frequency and causes of sudden death occurring in the urban and rural areas of the city of Uberaba in individuals older than 15 years. It aims mainly to analyse the current frequency of sudden death in that region and to evaluate the impact, it any, of prophylaxis and therapy on sudden death due to Chagas' disease. For the 1226 deaths cases studied from our 1980, 54 (4.4%) were sudden ones; out of these, 13 (24.1%) were supposedly due to Chagas' disease. For the 1740 death cases studied form our 1990 series, 44 (2.5%) were sudden ones; out of these, only 3 (6.8%) were considered to be due to Chagas' disease. The results indicate a significant decrease in the frequency both for sudden death in general and for sudden death due to Chagas' disease when the year 1990 is compared with 1980. Probable explanations for the findings are discussed.