Perfil hematológico de éguas Quarto de Milha alimentadas com feno ou haylage de Tifton-85 ( Cynodon spp. ) / Hematological panel of Quarter Horse mares fed Tifton 85 (Cynodon spp. ) hay and haylage

RESUMO O capim Tifton-85 (Cynodon spp.) vem sendo utilizado na alimentação de equinos na forma de pré-secado (haylage) e feno, todavia não existem estudos conclusivos a respeito da influência da haylage sobre o estado de saúde dessa espécie. Portanto, esta pesquisa objetivou avaliar o perfil sanguíneo como indicador de higidez de éguas Quarto de Milha alimentadas com haylage e feno de Tifton-85. A gramínea utilizada foi cortada com 30 dias de crescimento. Para produção da haylage, a planta cortada permaneceu no campo até atingir 70% de matéria seca, quando foi colhida. Foram utilizadas 12 éguas Quarto de Milha, com idade entre oito e 12 anos e com peso vivo médio inicial de 451,6kg. Os animais foram distribuídos aleatoriamente em dois grupos (n=6), sendo o grupo 1 alimentado com feno e o grupo 2 alimentado com haylage, por um período de 28 dias. Foram realizadas cinco coletas de sangue em intervalos de uma semana, para a determinação do perfil hematológico. Em relação ao eritrograma, observou-se discreta diminuição da concentração de hemoglobina, do hematócrito e do volume globular médio (VGM) em ambos os grupos. No leucograma, houve aumento dos leucócitos totais nas coletas iniciais em ambos os grupos, mas sem significado clínico. Conclui-se que éguas adultas Quarto de Milha, após a ingestão de feno e haylage de Tifton-85, não apresentaram alterações no perfil hematológico que indicassem prejuízos à saúde.(AU)

ABSTRACT Tifton-85 grass (Cynodon spp) has been used in equine nutrition in the form of pre-dried (haylage) and hay, however, there are no conclusive studies about the influence of haylage on blood profile of this species. Therefore, the aim of this study was to evaluate the blood profile as health indicators of Quarter Horse mares were fed haylage and Tifton-85 hay. The used grass was cut at 30 days of growth. For the production of haylage, this plant remained cut in the field until it had 70% of dry matter, when it was collected. Twelve Quarter Horse mares, aged 8-12 years, with average weight of 451.58kg were used. The animals were distributed randomly into two groups (n= 6), group 1 fed hay and group 2 fed haylage, both for 28 days. Blood samples were collected at one week intervals each for determining the hematological parameters. In the erythrogram, a decrease in the hemoglobin concentration, packed cell volume and mean cell volume after the administration in both groups were detected. The white blood count increased in both groups, but the values remained within normal limits without clinical significance. In conclusion, adult Quarter Horse mares fed Tifton-85 hay and haylage showed no alterations in hematology.(AU)

Cambios en el contenido nutricional de la uchuva (Physalis peruviana) frente a osmodeshidratación como método de conservación / Changes in nutritional content of cape gooseberry (Physalis peruviana) versus osmotic dehydration as a preservation method

Antecedentes: la osmodeshidratación en un método de conservación de frutas, que en ocasiones se acompaña de escaldado. Objetivo: evaluar el cambio en el contenido nutricional de la uchuva (Physalis peruviana) después de proceso de osmodeshidratación previo escaldado y sin este. Materiales y métodos: se sometieron a osmodeshidratación en jarabe de sacarosa de 80 °Brix durante 48 horas uchuvas maduras escaldadas y sin escaldar. Se secaron a 50 °C durante tres horas. En los productos se comparó el contenido de humedad, grasa, fibra, proteína, ceniza y vitamina C frente a la uchuva fresca. Resultados: el aspecto visual de la uchuva fue igual en los dos tratamientos. El contenido de las frutas frescas frente a las sometidas a osmodeshidratadas con y sin escaldado fueron respectivamente: ceniza (g) 8,2±0,3; 1,3±0,2 y 3,4±0,4; grasas (g) 1,0±0,0; 1,0±0,1 y 0,2±0,0; proteínas (g) 9,8±0,2; 3,8±0,3 y 9,3±0,3 y vitamina C (mg) 92±0,3; 20±0,8 y 34±1,0. Los valores de p según Anova fueron 0,0001 para fibra, ceniza, proteína y vitamina C, y 0,0008 para grasa. Con excepción de las grasas, los valores más bajos fueron cuando se uso la osmodeshidratación con escaldado. Conclusiones: la osmodeshidratación disminuye el contenido nutricional de la uchuva, sin embargo las pérdidas son mayores cuando se hace escaldado previo.

Background: Osmotic dehydration is a preserving fruits method which may be associated to blanching. Objective: Assessing change in cape gooseberry (Physalis peruviana) nutritional content, after being subjected to osmotic dehydration process with and without prior blanching. Materials and methods: Ripe cape gooseberries blanching and unbleached were exposed to osmotic dehydration by sucrose syrup 80 °Brix for 48 hours. Then, fruits were removed from the osmotic agent, and were placed in a drying oven at 50 °C for 3 hours. Finally, content of fat, fiber, protein, ash and vitamin C were determined. Results: Cape gooseberries visual aspect did not differ between used methods. Content of different compounds content in fresh fruit versus, and under osmodehydrated with and without blanching were, respectively: ash (g) 8.2±0.3; 1.3±0.2 and 3.4 ±0.4; fat (g) 1.0±0.0; 1.0±0.1 and 0.2±0.0, protein (g) 9.8±0.2; 3.8±0.3 and 9.3±0. 3 and vitamin C (mg) 92±0.3; 20±0.8 and 34±1.0. P values evaluated by Anova were 0,0001 by fiber, ash, proteins and vitamin C, and 0,0008 by fat. Except for fat, in which the lowest values were obtained when osmotic dehydration with blanching was used. Conclusions: Osmotic dehydration decreases nutritional content of the cape gooseberry (Physalis peruviana). However, the nutritious loss is especially affected if osmotic dehydration is joined to thermal processes as blanching.