TCC - Zootecnia (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/478
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Resultados da Pesquisa
Item Relatório de Estágio Supervisionado Obrigatório(2024-09-23) Aquino, Nelina Aurora Lourenço de; Rabello, Carlos Bôa Viagem; http://lattes.cnpq.br/4760288746238700; http://lattes.cnpq.br/9869450957619196Item Características ósseas para estimar a ingestão de manganês complexado a aminoácidos para aves de postura fase de cria(2024-02-28) Lima, Stephany Debora Vila Bela de; Souza, Lilian Francisco Arantes de; Wanderley, Jamille Sheila da Silva; http://lattes.cnpq.br/4706720624276029; http://lattes.cnpq.br/6015344715032401; http://lattes.cnpq.br/8296739801125452Inorganic mineral sources have lower bioavailability and are commonly supplemented in excess in bird feed to meet requirements, while organic sources are more bioavailable and are included in smaller quantities in the diet. The present study aimed to estimate the ideal intake of manganese complexed with amino acids in the diet of laying hens during the rearing phase using bone variables. 720 Dekalb White chicks aged 1 to 6 weeks were used and distributed in a completely randomized design (DIC) in 6 treatments with 6 replications of 20 birds each. The treatments consisted of isonutritive and isoenergetic diets with levels of complexed manganese inclusion at 25, 37, 49, 61, 73 and 85 mg/kg. At the end of the experimental period, both tibias were collected from 1 bird per experimental plot. To evaluate bone variables, the following were measured and used: bone strength, densitometry (proximal, medial and distal), mineral matter and Seedor index of the tibias. The bone variables obtained were subjected to multivariate data analysis, with multivariate analysis of variance being performed, then the data were subjected to principal component analysis (PCA) and correlation matrix, and based on the results, the variables were subjected to linear and non-linear regression models to estimate the ideal intake of manganese complexed with amino acids for the breeding phase. According to the results of ANOVA and MANOVA and according to PCA, distal densitometry is the most relevant bone variable to make the estimate. The ideal intake of manganese complexed with amino acids was calculated using the models: MnCAA = Rmax.x/(km+x) and MnCAA = - r+ln((-y-Rmin-amp/y-Rmin)/s), and From the inversion of the models, an estimated consumption of 1,767 mg/bird/day of MnCAA was generated for the maximum response of medial tibial densitometry.Item 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/8712824360632961The 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.Item Planejamento e avaliação econômica de diferentes sistemas produtivos de pequeno porte de poedeiras de ovos marrons(2023-09-14) Wilarins, Eric Alexandre Araujo; Rabello, Carlos Bôa Viagem; Soares, Luciana Felizardo Pereira; http://lattes.cnpq.br/4071178363761831; http://lattes.cnpq.br/4760288746238700; http://lattes.cnpq.br/4863920854475665The study aimed at planning the production of brown eggs in three small-scale farming systems, along with an economic evaluation of each of them. The comparative analysis among these systems aims to identify which one is more advantageous and profitable, taking into consideration aspects related to facilities, equipment, and inputs. To conduct the planning, the Lohmann Brown lineage manuals for cage production system and alternative systems (cage-free and free-range) were used as a basis for productive indices. The production cost analysis was carried out based on market research, followed by an economic analysis. The conventional system showed a benefit/cost ratio of 0.61, 0.68, and 0.71 in up to three production cycles, respectively. The cage-free system had ratios of 0.65, 0.77, and 0.80, while the free-range system had ratios of 0.76, 0.89, and 0.91. Although three production systems were planned with the expectation of achieving viability in up to three production cycles, none of them proved to be economically viable due to the low benefit-to-cost ratio. Therefore, it was estimated for six production cycles, where the benefit/cost ratio for the conventional system was 0.71 and for the cage-free system was 0.87, both still being unviable. However, the free-range system was viable in six production cycles with a benefit/cost ratio of 1.07, meaning it showed a profit of R$ 8,932.90 per month. Therefore, reducing the costs related to feeding in the planning could potentially result in a more favorable benefit/cost ratio and make it viable with fewer production cycles.Item Efeito da adição de zeólita natural (Clinoptilolita) em dietas sobre os parâmetros sanguíneos de poedeiras(2022-10-07) Santos, Adrielle Carneiro de Araújo; Ludke, Maria do Carmo Mohaupt Marques; http://lattes.cnpq.br/4629657233206289; http://lattes.cnpq.br/5809137471735648The objective of this work is to evaluate the effect of the addition of natural zeolite (Clinoptilolite) in diets on the serum and hematological biochemical profile of laying hens. The treatments consisted of six levels of zeolite inclusion, 0, 0.7; 1.4; 2.1; 2.8; 3.5%, where all diets were isoenergetic and isoproteic, differing only the replacement of an inert material (washed sand) by the zeolite additive. The design was in randomized blocks, with 8 replications and 5 birds per plot, totaling 240 ISA-Brown laying hens from the 54th week with approximate weight of 1.75 kg. To perform the hematological analysis, 1 bird per plot was used and 4ml blood samples were collected from the ulnar vein of one of the wings. The hematological variables were: red blood cells, hemoglobin, platelets, leukocytes, total plasma proteins, heterophils, lymphocytes, eosinophils and monocytes. To evaluate the biochemical parameters, samples of 4ml of blood each were collected from 2 birds per plot and submitted to analysis of total proteins, albumin, calcium, creatinine, urate/uric acid, urea, alkaline phosphatase (ALP), aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma glutamyl transferase (GGT). Data were submitted to analysis of variance, and if significant, regression analysis and Dunnet's test at 5% probability were performed. No significant effect was observed for the biochemical parameters. As for the hematological variables, an effect of zeolite on total lymphocytes was observed (p=0.0006). When the regression analysis was performed, a quadratic effect was found (p=0.0035). When applying Dunnet's test, it was found that the absolute value of lymphocytes differed as a function of natural zeolite (Clinoptilolite) in relation to the control diet at the level of 3.5% inclusion. With this, it is concluded that clinoptilolite can be used in the feeding of laying birds at the level of 3.5% of inclusion, providing a greater amount of lymphocytes, stimulating the production of antibodies and improving immunity.Item Digestibilidade de nutrientes de dietas de aves poedeiras na fase de cria alimentadas com aditivo simbiótico(2021-07-06) Andrade, Mariane Farias de; Rabello, Carlos Bôa Viagem; http://lattes.cnpq.br/4760288746238700; http://lattes.cnpq.br/4027425613630492The objective was to determine the effect of the use of symbiotic additive on the energy and nutrient utilization of layer feed in the rearing phase. The study was conducted in the laboratory of poultry research (LAPAVE) of the Department of Animal Science of the Federal Rural University of Pernambuco, with a duration of 35 days. A total of 1040 chicks of the Dekalb White strain from 1 to 5 weeks of age were used, distributed in an entirely randomized design with 4 treatments, 10 repetitions with 26 birds each. The treatments were composed of two base diets: the first composed of corn and soybean meal, with no feed additives - RR; the second control diet composed of corn, soybean meal and meat and bone meal, with no feed additives - FCO; to formulate the third diet, 0.05% of the additive Bacitracin Zinc - Bac Zn was added to the FCO diet, and 0.1% of the symbiotic additive - Simb-C was added to the FCO diet for the fourth diet. For nutrient digestibility evaluation, the collection of excreta was performed at the 3rd week of age of the birds, following the protocol of partial collection method, in which 1% of Celite® indicator was introduced in the diets, in order to measure nutrient digestibility. The collection of excreta occurred three consecutive days, preceded by three days of adaptation to the diet with the indicator. The collected excreta were packed in plastic bags and frozen in a freezer to perform the analyses and calculations for determining nutrient digestibility (dry matter and crude protein) and gross and metabolizable energy values of the diets. Thus, three contrasts were generated, consisting of: Contrast 1: RR vs FCO; Contrast 2: FCO vs Bac Zn; Contrast 3: Bac Zn vs Simb-C. The results obtained showed that there were no significant differences between the variables CMAMS, CMAPB, CMAEB, EMA and EMAn in the contrast of the RR vs FCO diets. However, when contrasting the FCO vs. Bac Zn diets, the MCPAB was better in the diet containing the zinc bacitracin additive, which had lower values than the other variables. However, the diet containing FCO showed a better use of CMAEB, EMA and EMAn. When evaluating Bac Zn vs Simb-C no significant differences were observed between MCAPB but for the other variables the symbiotic provided lower values. It can be concluded that the symbiotic additive proved to be a possible substitute for the antibiotic zinc bacitracin in layer feed during rearing.Item Efeito acumulativo de dietas com adição de simbiótico sobre a qualidade dos ovos em galinhas de postura até a fase final de produção(2021-12-03) Gomes, Evenn Katharynny Souza; Souza, Lilian Francisco Arantes de; http://lattes.cnpq.br/6015344715032401; http://lattes.cnpq.br/9947057920380953This study aimed to evaluate the effect of replacing zinc bacitracin with a symbiotic additive composed of a mixture of probiotics (Saccharomyces cerevisiae, Bifidobacterium bifidium, Bacillus subtilis, Entericococcus faecium and Lactobacillus acidophilus) and prebiotics (glucans, mannans) in the diet of laying hens at different rearing stages and egg quality at the end of the laying phase. A total of 198 layers aged 70 to 90 weeks were used, distributed in an entirely randomized design with 6 treatments and 6 repetitions, 3 pens with 6 birds and 3 pens with 5 birds. The treatments were composed of two base diets, the first composed of corn and soybean meal without additives (RMS), the second composed of corn, soybean meal and added meat and bone meal without additives (FCO) and other four test diets based on FCO with additives, one diet with the addition of 0.05% of the additive Zinc Bacitracin (BAC) and the others with the addition of 0.1% of the additive Symbiotic starting in the rearing (SIMBC), breeding (SIMBR) and production (SIMBP) phases. For quality evaluation, the eggs were collected on the last 3 days of the 74th and 90th week of life of the layers. Egg weight (g), yolk (PG), albumen (PA) and shell (PC), percentage (%) of yolk (PCG), albumen (PCA) and shell (PCC), yolk color (CG), shell thickness (EC, mm), albumen height (AB, mm) and Unit Haugh (UH) were evaluated. As the results obtained it was observed that the SIMBC diet results in higher PCA compared to BAC, in the different phases. The increase in PCA was observed when the symbiotic was used starting at rearing. In the 74th week of the birds, a higher PC was observed in the eggs of the BAC diet compared to the FCO and SIMBC diets; a higher PCC was also observed in the eggs of the birds on the BAC diet compared to SIMBC and SIMBR. The birds that received the RMS diet produced eggs with greater EC when compared to the FCO group at both ages evaluated. The SIMBC diet resulted in greater shell thickness compared to the BAC diet, while the SIMBR diet resulted in greater shell thickness at 74 weeks and less at 90 weeks. The CG at 74 weeks in birds fed the RMS or BAC diets produced eggs with better yolk color compared to the FCO diet, and this same effect only occurred in eggs from birds fed the symbiotic in the rearing, growing and production phases. AB and UH had a better maintenance effect on the SIMBR and SIMBP diets. It was found that these results occur due to the strong influence of the symbiotic on the metabolic activity of beneficial bacterial colonies and consequently the better absorption of nutrients by the gastrointestinal tract. Therefore, the use of the symbiotic additive in replacement of the antibiotic is indicated, by improving the quality of eggs from layers in the final phase without losses, especially in the rearing and rearing phases.