Navegando por Autor "Silva, Webert Aurino da"

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Efeito do peso corporal de poedeiras na fase de pós-pico sobre o desempenho, qualidade dos ovos e indicadores de bem-estar
(2024-02-28) Santos, Leanndra de Pádua Ferreira; Souza, Lilian Francisco Arantes de; Silva, Webert Aurino da; http://lattes.cnpq.br/7409325762363597; http://lattes.cnpq.br/6015344715032401; http://lattes.cnpq.br/8712824360632961
The objective of this work was to evaluate the effect of body scores of laying hens in the post-peak phase on performance, egg quality and welfare indicators. We used 90 Dekalb White layers aged 60 to 72 weeks distributed in a completely randomized design in 3 treatments composed of different body weights of the birds (light, medium and heavy) with 6 replications of 5 birds each. Bird performance was evaluated through egg production (%), feed consumption (g), feed conversion (g/g) and egg mass (g). Egg quality was assessed using egg weight (g), yolk color, albumen height (mm), Haugh Unit, shell strength, yolk height and diameter (mm) and yolk index by an automatic analyzer. of eggs. Animal welfare was assessed using indicators from the Welfare Quality protocol for laying hens (keel injuries, skin injuries, crest injuries, foot pad injuries). The data obtained on the performance and quality variables of the eggs were subjected to analysis of variance, and when found to be significant, the Tukey test was performed at 5% significance. Well-being indicators were subjected to the chi-square test at 5% significance. Feed consumption for heavy birds was higher, followed by medium birds and lower for light birds. Heavier eggs were observed in medium and heavy birds compared to light ones. Medium birds had greater egg mass compared to heavy ones, not differing from light ones. Heavy birds showed worse conversion per egg mass compared to light and medium birds, which did not differ from each other. Medium and heavy birds produced heavier eggs when compared to light ones, despite having lighter eggs, birds with lower body weight produced eggs with heavier yolks. The albumen height was more pronounced in light and medium birds, the yolk index was higher in light birds while the yolk color was more pigmented in medium birds. Shell strength was worse in heavy birds. There was no significant effect of body weight on well-being indicators related to the skin, ridge and footpad. However, heavy birds had a higher frequency of keel fractures compared to light and medium birds. With this, it is concluded that the control of body weight and uniformity in batches of laying hens is necessary, especially in relation to the increase in weight of birds in relation to the standard, since the greatest losses to performance, egg quality and well-being of birds were observed in heavy birds.
Histopatologia de fígado de codornas alimentadas com óleo de Moringa oleifera Lam em substituição ao óleo de soja
(2019-07-19) Silva, Webert Aurino da; Nascimento, Júlio Cézar dos Santos; http://lattes.cnpq.br/4343017315156292; http://lattes.cnpq.br/7409325762363597
The search for the threat of growth promoters for poultry feed, the search for substitute products that enable them to act on current antimicrobials, maintaining intestinal strength and the health of other organs, provide good nutrient absorption efficiency and good production rates. Probiotics, prebiotics, symbiotic and biological, and the prominent and close, are the perspective of alternatives to their positive action on animal health. Moringa is a fast growing plant with adaptation in tropical climates, it has several uses and it is in state of animal nutrition, having appeared some studies on the importance of vegetal nutrition, limiting the amino acids for the birds. Moringa oil also has therapeutic components, which are found largely under the health and performance of animals. The present study was about the effect of Moringa oleifera Lam oil on the liver of Japanese quails. A total of 120 birds with 18 weeks of age, distributed in a completely randomized design, housed in galvanized wire cages with dimensions of 33 x 30 x 18 cm (depth x width x height), equipped with drinking fountains and glass fountains were arranged on three floors, mounted on a ladder. The experiment was conducted at the Bird Research Laboratory (LAPAVE), located in the Animal Science Department of the Federal Rural University of Pernambuco. The experiment had five treatments, of 0; 0.5; 1; 1.5; 2.0% Moringa oleifera oil in the removal of soybean oil. At 36 weeks old, quail were sacrificed and the liver collected 4 birds from each treatment, ie 5x4 = 20 other organs, in order to look for signs of toxicity or improvement. The collected liver was preserved in 10% formalin solution, later these samples were taken to the animal histology laboratory where the histological slides were prepared. After the preparation of the laminae, a microscope was read where the lesions were described. We can observe that higher levels of soybean oil contributed to the presence of fatty liver, and that from 0.5% inclusion of Moringa oil we observed improvements in hepatic tissue, this effect is justified due to the presence of tocopherols, flavonoids and antioxidants present in the oil. With the present work we conclude that from the inclusion of 0.5% Moringa oleifera oil in Japanese laying quails feeding, it had an antioxidant effect against lipid peroxidation, increased ability to regulate membrane permeability of hepatocytes increasing its defense against the aggression of substances harmful to the organ that could cause greasy liver, thus also being able to highlight antinflammatory action with the increase of the activity of the cells of Kpuffer.
Relatório de Estágio Supervisionado Obrigatório
(2019-12-05) Silva, Webert Aurino da; Nascimento, Júlio Cézar dos Santos; http://lattes.cnpq.br/4343017315156292; http://lattes.cnpq.br/7409325762363597