Moacir Ferreira Duarte Júnior

Características seminais e de membrana espermática em touros suplementados com tocoferol

This study had objective to evaluate the integrity of the plasma membrane and semen quality of bulls supplemented with tocopherol. Bulls were used 16 with an average age of 24 months and average weight of 462.2 kg in two treatments: control group (CG) and group supplemented with tocopherol (GE-400 IU of tocoferol/animal / day) added to the concentrate supplement. The groups were kept in pasture supplemented with 4.5 kg / animal / day concentrate. Tocopherol supplementation was provided for 60 days. 4 semen samples were carried out: on days 0 , 30, 60 and 15 days after the end of supplementation. Semen was collected by electroejaculation , it has measured up the physical and morphological sperm characteristics. To assess the integrity of membrane used the hyposmotic test, eosin / nigrosine, Pope and trypan blue. The experiment was conducted in a completely randomized design with repeated measurements over time. Data were analyzed using ANOVA and SNK test with a 5% significance level with assistance from the SAS statistical program. It found effect of supplementation force (p = 0.0183) (CG = 2.71 ± 0.095 and GE = 2.23 ± 0.16) ;. There were no differences (p> 0.05) for the other variables: motility, concentration, morphology, acrosome integrity, sperm viability and membrane integrity. With the results obtained in the experimental conditions of this study, it is concluded that oral supplementation with tocopherol 400 IU / day showed no improvement over the seminal quality or integrity of the sperm membrane Bulls.

Girassol (Helianthus annuus L.) e seus coprodutos na alimentação animal

The use of co-products of agro-industries in animal feed has already been done for many years. With the encouragement of domestic production of Biodiesel generation of these products had increased significantly, allowing its use in animal feed, by increasing the supply of meals or pies from the extraction of oil from oilseeds. Soybean meal is the main source of protein fed to ruminants and monogastric animals, but with increasing global demand for food high in protein, not competitive with human food, boosts the use of these co-products in animal feed, mainly for ruminants, due to its unique ability to transform non-digestible fibers by the human body, products of high biological value such as meat and milk. Among the crops used to produce Biodiesel, sunflower had a significant increase in production and productivity in recent years, thanks to its adaptability to various soil and climatic conditions. The co-products of sunflower have favorable nutritional characteristics of feed animals of zootechnical interest, minimizing production costs and maximizing production of meat and milk.