RESUMO -A pesquisa foi desenvolvida com os objetivos de avaliar o desempenho e as características de carcaça de frangos de corte alimentados com dietas contendo diferentes níveis de polpa de caju desidratada e analisar a viabilidade econômica desse sistema de produção. Foram utilizados 320 frangos com 22 dias de idade, da linhagem Ross, de ambos os sexos, distribuídos em delineamento em blocos casualisados, com quatro tratamentos -níveis de inclusão (0, 5, 10 e 15%) de polpa de caju desidratada (PCD) -e cinco repetições com 16 aves. Aos 42 dias de idade, foram selecionadas, por peso e sexo, quatro aves (dois machos e duas fêmeas) por unidade experimental, as quais foram abatidas para avaliação do rendimento de carcaça e de seus cortes. A inclusão de até 15% de polpa de caju desidratada em rações para a fase de crescimento não influenciou o consumo, o ganho de peso e as principais características de carcaça dos frangos de corte. A conversão alimentar piorou e a viabilidade econômica (renda bruta e margem bruta média) foi menor com o incremento da polpa de caju desidratada nas rações. O uso de polpa de caju desidratada para frangos de corte depende do preço da polpa em relação ao preço do ingrediente convencional (milho) e do óleo vegetal utilizado na formulação da dieta.Palavras-chave: caju, características de carcaça, desempenho, frango de corte Dietary dehydrated cashew pulp for finishing broilers: performance and characteristics carcassABSTRACT -This research was developed to evaluate the performance, carcass characteristic and economical viability of broilers fed diets with increasing levels of dehydrated cashew pulp. Three hundred and sixty Ross breed broilers of both sexes averaging 22 days old were allotted to randomized blocks design with four treatments, constituted of dehydrated cashew pulp levels (0, 5, 10, and 15%) and five replications. At 42 days old, four birds (two males and two females) were slaughtered by weight and sex per experimental unit to evaluate the main carcass characteristics. The 15% level of dehydrated cashew pulp in the growing diets did not affect feed intake, weight gain and main carcass characteristics of broiler. No effects of increasing levels on feed gain ratio and economical analyses (gross revenue and average gross margin) were noticed. The use of dehydrated cashew pulp in the broiler diets depends on the diet prices.Key Words: broiler, cashew, characteristics cascass, performance IntroduçãoO frango de corte, entre os animais produtores de alimentos para o homem, destaca-se por transformar produtos de origem vegetal em proteína de alta qualidade. Entretanto, no sistema de produção de aves, o gasto com a alimentação corresponde a aproximadamente 80% do custo total. Estas constatações têm levado produtores e técnicos à buscar medidas alternativas que reduzam os custos, pois as oscilações ocorridas nos preços dos principais insumos utilizados na nutrição desses animais (milho e soja) têm levado o setor avícola a vivenciar fortes crises econômicas. A alimentação, por ser um comp...

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The resistance of Mangifera indica to tip dieback disease caused by Botryosphaeria ribis, anamorphic state Fusicoccum sp., was determined on 361 trees of 122 mango cultivars and relatives planted in the mango germ plasm collection at the University of Florida, Tropical Research and Education Center, Homestead. Three trees from each cultivar were evaluated on a 1 to 5 scale ranging from those free of tip dieback to those with extensive branch necrosis. Each cultivar was assigned to one of eight major systematic groups based on race or geographic origin. Resistance to tip dieback disease was not associated with any of the groups. No significant differences in mean disease severity were found among the Indian, Southeast Asian, West Indian, Haden, or Sandersha parts of the Haden-Sandersha Complex, Turpentine types, or a group of unclassified cultivars. Two Mangifera species (M. odorata and M. zeylanica) showed the lowest mean disease rating. Cultivars were also grouped into monoembryonic and polyembryonic types. Although several mango cultivars, mainly found in the monoembryonic group, appeared to be free of the disease, resistance to tip dieback was not associated with embryony. This study provides the first indication that field resistance to tip dieback may be present in some mango cultivars.

Study of the stomata and leaf epidermis of eight Lycopersicon species has revealed a relationship between frequency of stomata, stomatal size and some morphological leaf characteristics, and resistance to bacterial leaf spot caused by Xanthomonas campestris pv. vesicatoria. Significant correlations were found between the stomatal frequency in both adaxia! and abaxial leaf epidermis and the number of bacterial lesions per leaf area (/-= 0-70 and 0-68, respectively) and the frequency of stomata in both adaxial and abaxial epidermis and disease incidence (percentage of diseased plants) {r -0-^1 and 080, respectively) for all the Lycopersicon species and one hybrid tested. A correlation was also found between disease incidence and number of bacterial lesions per leaf area (/'^O-SS). The length and width of stomata were correlated with frequency of stomata in adaxial and abaxial epidermis (/• = 0-85, 0-75. 0-89 and 090, respectively). The stomatal width was correlated with the number of bacterial lesions per cm-(/• = 0'82; P = 0-0065). Scanning electron microscopic studies of the leaf surface and stomata indicated that other morphological features such as the raised stomatal complex in L. hirsutwn and persistent, hydrophobic waxy coating of the epidermis in L. peruvianum may also be relevant in disease response.