Coleobrocas em acessos do banco de germoplasma de mandioca da Embrapa Amazônia Oriental.

A mandioca (Manihot esculenta Crantz) é uma planta cultivada em todas as regiões do Brasil, com destaque para o estado do Pará, maior produtor nacional. A cultura está sujeita ao ataque de pragas durante todo o seu ciclo. As brocas da haste, consideradas pragas secundárias, penetram na haste debilitando a planta. O objetivo desse trabalho foi avaliar os acessos do banco de germoplasma de mandioca da Embrapa Amazônia Oriental quanto à presença de brocas da haste considerando a ocorrência dessa praga em plantas de mandioca açucarada e que o dano ocasionado pelo inseto pode se constituir em uma porta de entrada para patógenos. Foram realizadas avaliações mensais, com a identificação e coleta das plantas com aspecto de murcha e/ou com perfurações nas hastes. Foram constatadas 61 plantas com aspecto de murcha, distribuídas em 45 acessos. Destas, 51 plantas apresentaram hastes com galerias na região do colo e na parte superior da planta. Foram coletadas 79 larvas pertencentes aos tipos carabiforme, curculioniforme e limaciforme. Foram obtidos 176 adultos pertencentes à ordem Coleoptera e às famílias Cerambycidae (Anisopodus lignicola Bates, 1863) e Curculionidae (Pappista granicollis (Pierce, 1916))

Tamarixia radiata (Hymenoptera: Eulophidae) parasitoide de Diaphorina citri em municípios do estado do Pará.

VII ENAAg

Fenologia reprodutiva da andirobeira (Carapa guianensis Aublet.), na região de Parintins - AM.

O estudo da fenologia da espécie Carapa guianensis Aublet foi realizado na comunidade N. S. do Rosário, município de Parintins - AM

Effect of Dietary Laminaria digitata with Carbohydrases on Broiler Production Performance and Meat Quality, Lipid Profile, and Mineral Composition

Research Areas: Agriculture; Veterinary Sciences; ZoologyABSTRACT - We hypothesized that dietary inclusion of 15% Laminaria digitata, supplemented or not with carbohydrases, could improve the nutritional value of poultry meat without impairing animal growth performance. A total of 120 22-day old broilers were fed the following dietary treatments (n = 10) for 14 days: cereal-based diet (control); control diet with 15% L. digitata (LA); LA diet with 0.005% Rovabio® Excel AP (LAR); LA diet with 0.01% alginate lyase (LAE). Final body weight was lower and feed conversion ratio higher with LA diet than with the control. The ileal viscosity increased with LA and LAR diets relative to control but without differences between LAE and control. The pH of thigh meat was higher, and the redness value of breast was lower with LA diet than with control. Meat overall acceptability was positively scored for all treatments. The γ-tocopherol decreased, whereas total chlorophylls and carotenoids increased in meat with alga diets relative to control. The percentage of n-3 polyunsaturated fatty acids (PUFA) and accumulation of bromine and iodine in meat increased with alga diets compared with control. Feeding 15% of L. digitata to broilers impaired growth performance but enhanced meat quality by increasing antioxidant pigments, with beneficial effects on n-3 PUFA and iodineinfo:eu-repo/semantics/publishedVersio

Digestibility of Meat Mineral and Proteins from Broilers Fed with Graded Levels of Chlorella vulgaris

The incorporation of sustainable protein sources in animal feeding is a growing trend. So far, no study has investigated in vitro digestion of meat, from broilers fed microalgae, in a human model. This research aimed to evaluate the effect of incorporating Chlorella vulgaris in the broilers diet on human protein digestibility, and mineral bioaccessibility. The study used 240 male Ross 308 broilers randomly allocated to groups fed a control diet or a diet where soybean meal was replaced with 10% (CV10%), 15% (CV15%), or 20% (CV15%) of C. vulgaris for 40 days. The microalga supplementation increased the protein and lowered the fat content in the muscle. Results on the percentages of amino acids highlighted that arginine and threonine proportions increased and lysine and cysteine proportions decreased with microalga inclusion. CV15% and CV20% meat had higher amount of K, Ca, Mg, P, and Fe in raw breasts, improving the nutrient composition of the meat. Cooking caused a decrease in Na and K and an increase in other minerals. CV20% had higher bioaccessibility of K, Ca, Mg, P, and Mg, compared to the control. Replacing soybean meal in broiler feed with higher concentrations of C. vugaris could improve the digestibility of meat protein and minerals