Mestrado em Zootecnia (EVZ)
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Navegando Mestrado em Zootecnia (EVZ) por Por Orientador "Leandro, Nadja Susana Mogyca"
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Item Óleo-resina de copaíba e extrato de barbatimão na dieta de poedeiras comerciais infectadas por Escherichia coli(Universidade Federal de Goiás, 2015-04-17) Barbosa, Aleane Francisca Cordeiro; Café, Marcos Barcellos; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721288T1; Andradae, Maria Auxiliadora; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780227J3; Leandro, Nadja Susana Mogyca; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785461T6; Leandro, Nadja Susana Mogyca; Rodrigues, kênia Ferreira; Stringhini, José HenriqueThe present study was performed to evaluate the supplementation of copaiba oleo resin or barbatimão extract in the diet of laying hens challenged with Escherichia coli. A total of 200 Isa Brown laying hens (64-76 weeks old) were used, and all the birds were intravaginally inoculated with 0.5 mL of 0.85% sterile saline solution containing 8.8 x 109 CFU / mL of Escherichia coli. It was adopted the randomized complete block design (birds weight used as block criteria), with four treatments and five replicates of 10 birds. The treatments consisted of: basal diet without additives (control); basal diet + 30 mg / kg of antibiotic (halquinol); basal diet + 30 mg / kg of copaiba oleo resin and basal diet + 40 mg / kg barbatimão extract. The experiment lasted three periods of 28 days. At the end of each period, the performance and the external and internal egg quality were evaluated as the search for the presence of Escherichia coli in eggs; and at the end of the total period, the search for Escherichia coli in ovarian follicles and oviduct. Data were subjected to analysis of variance and means, when necessary, were compared by Tukey test (5%). For the Escherichia coli searching in eggs, follicles and oviduct, it was applied descriptive analysis (absolute and relative frequency). The inclusion of 40 mg / kg diet of barbatimão extract lead to worse feed conversion than the control treatment and decreased egg production compared to antibiotic treatment. The addition of 30 mg / kg diet of copaiba oleo resin did not influence the hens performance. The use of barbatimão extract lead to production of heavier eggs, and worse shell thickness and internal quality (UH) when compared to antibiotic treatment. Egg weight, the albumen percentage and the yolk index in the treatment with copaiba oleo resin were better than those of antibiotic treatment. However, the inclusion of copaiba oleo resin resulted in a lower yolk percentage when compared to antibiotic treatment. There was a lower frequency of isolation of Escherichia coli in intra-vaginal swabs samples from treatment with copaiba. The inclusion of barbatimão or copaiba provided lower frequency of isolation of E. coli in ovarian follicles in relation to antibiotic treatment. There was a lower frequency of isolation of E. coli in the oviduct with the addition of barbatimão extract when compared to antibiotic treatment. The treatment with copaiba oleo resin showed higher frequency of isolation of E. coli in the oviduct than the other treatments. The use of copaiba oleo resin or barbatimão extract resulted in lower frequency of isolation of Escherichia coli in the shell, albumen and yolk samples, in relation to antibiotic treatment. The inclusion of copaiba oleo resin may be an alternative to antibiotics in laying hens commercial diets.Item Rendimento de incubação de ovos de matrizes de frangos de crescimento lento(Universidade Federal de Goiás, 2019-03-15) Machado, Juliana Pinto; Araújo, Itallo Conrado Sousa de; http://lattes.cnpq.br/0186857706444299; Café, Marcos Barcellos; http://lattes.cnpq.br/9860968235125158; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Mello, Heloísa Helena de Carvalho; Mesquita, Mariana AlvesTwo experiments were conducted to evaluate effects of slow growing breeder age on hatching egg quality, incubation yield, chick quality score, organ histomorphometry, immunological quality of chicks and performance in the initial phase. The treatments were two breeders age, 38 and 51 weeks, of Isa Label Naked Neck strain. In both experiments a total of 630 eggs were used, distributed in three incubators (block), being 210 eggs in each. In the egg quality study, 45 eggs per treatment were used. Eggs from breeders of 51 wk-old had greater weight and percentage of yolk, presenting even greater weight loss until transfer. Chicks from breeders at 38 wk-old had a smaller hatch window. Breeders of 51 wk-old resulted in a better progeny, with heavier hatching chicks and better intestinal quality. In the second experiment the treatments consisted of two ages of slow growing matts Isa Label Naked Neck, 38 and 51 wk-old, and two hatching times, early: chicks that hatched between 479 to 485 hours of incubation; and late: between 491 and 497 hours. The experimente was conducted in a randomized block design in factorial scheme 2x2, being the factors the breeder age and hatching time. A total of 384 one-day-old chicks with an initial mean weight of 38.87 g ± 3.88 g from the incubation trial were placed in cages for performance evaluation. Significant interaction were observed for neonate chicken body weight, and those from young mothers hatched in early time showed lighter weight compared to the other treatments. Broiler breeders age influenced the body weight gain up to 21 days of age. Chicks that has hatched in the late time, had a more eficiente use of residual yolk and greater intestinal development at 7 days of age. Chicks from younger breeders has hatched early (479-485 h) showed the worst body weight.Item Rendimento de incubação de ovos de matrizes de frangos de crescimento lento(Universidade Federal de Goiás, 2019-03-15) Machado, Juliana Pinto; Araújo, Itallo Conrado Sousa de; http://lattes.cnpq.br/0186857706444299; Café, Marcos Barcellos; http://lattes.cnpq.br/9860968235125158; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Mello, Heloísa Helena de Carvalho; Mesquita, Mariana AlvesTwo experiments were conducted to evaluate effects of slow growing breeder age on hatching egg quality, incubation yield, chick quality score, organ histomorphometry, immunological quality of chicks and performance in the initial phase. The treatments were two breeders age, 38 and 51 weeks, of Isa Label Naked Neck strain. In both experiments a total of 630 eggs were used, distributed in three incubators (block), being 210 eggs in each. In the egg quality study, 45 eggs per treatment were used. Eggs from breeders of 51 wk-old had greater weight and percentage of yolk, presenting even greater weight loss until transfer. Chicks from breeders at 38 wk-old had a smaller hatch window. Breeders of 51 wk-old resulted in a better progeny, with heavier hatching chicks and better intestinalquality. In the second experiment the treatments consisted of two ages of slow growing matts Isa Label Naked Neck, 38 and 51 wk-old, and two hatching times, early: chicks that hatched between 479 to 485 hours of incubation; and late: between 491 and 497 hours. The experimente was conducted in a randomized block design in factorial scheme 2x2, being the factors the breeder age and hatching time. A total of 384 one-day-old chicks with an initial mean weight of 38.87 g ± 3.88 g from the incubation trial were placed in cages for performance evaluation. Significant interaction were observed for neonate chicken body weight, and those from young mothers hatched in early time showed lighter weight compared to the other treatments. Broiler breeders age influenced the body weight gain up to 21 days of age. Chicks that has hatched in the late time, had a more eficiente use of residual yolk and greater intestinal development at 7 days of age. Chicks from younger breeders has hatched early (479-485 h) showed the worst body weight.Item Desempenho produtivo, reprodutivo e resposta fisiológica de abelhas africanizadas que receberam suplementação alimentar(Universidade Federal de Goiás, 2019-05-17) Oliveira, Gustav de; Braga, Carla Afonso da Silva Bitencourt; http://lattes.cnpq.br/7673897995590123; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Almeida, Maria José Oliveira de Faria; Arnhold, EmmanuelThe objective of this study was to evaluate the effect of the addition of amino acids and vitamins in the sucrose syrup used for Apis mellifera supplementation, in terms of its productive and physiological aspects, as well as its economic viability. Two experiments were carried out, the first in the apiary school of the EVZ / UFG and the second in a controlled environment in the ICB/ UFG morphology laboratory in Goiania. The supplements tested in the two experiments were: 50% sucrose syrup; sucrose syrup 50% + 0.5% of the commercial amino acid / vitamin supplement (Promoter L®); sucrose syrup 50% + 0.5% amino acids in proportion to the requirements of A. mellifera and sucrose syrup 50% + 0.5% amino acids are in the proportion of the o royal jelly. The second experiment had a control treatment: mixture of 66% honey and 34% pollen. In the first experiment, 16 hives were supplemented from april to july, with four treatments and four replications. A completely randomized design was used. The analyzed variables in the experiment were: capped brood area and honey production. Difference between the treatments was observed for both variables, with best results for sucrose syrup 50% + 0.5% of Promotor L® and sucrose syrup 50% + 0.5% of amino acids in proportion of its requirements for A. mellifera. The cost / benefit ratio indicate economic advantage for sucrose syrup 50% + 0.5% of amino acids in proportion of its requirements for A. mellifera. In the second experiment were used 500 newly emerged bee placed in experimental cages and distributed in randomized block design, in BOD greenhouse, with five treatments and four repetitions of 25 bees confined for seven days. The analyzed variables in the experiment were: food consumption; dry weight, survival rate, development of hypopharyngeal gland, lipids and protein deposition in body and crude protein of hemolymph. It was observed higher consumption of diets from the sucrose-based syrup treatments when compared to the treatment with honey and pollen. Body deposition of lipids was higher for treatment with honey and pollen. The survival rate were higher in treatment with honey and pollen and treatment containing sucrose with amino acids in the proportions of its requirements for A. mellifera. The development of hypopharyngeal glands differed between the treatments, with best results for the treatment containing honey and pollen and for the treatment with sucrose syrup with amino acids in the proportions of its requirements for A. mellifera. The treatment containing only sucrose and the treatment containing sucrose syrup with amino acids in the proportions of the royal jelly show the worst results. The dry weight and deposition of proteins, where best for the treatment with honey and pollen, and worst results for the treatment containing only sucrose syrup. Considering the results obtained in the two experiments, it is recommended to use 50% sucrose supplement with 0.5% essential amino acids in the proportions of A. mellifera requirements in the off-seasoItem Desempenho, qualidade de ovos e parâmetros intestinais de poedeiras leves alimentadas com rações contendo butirato de sódio protegido(Universidade Federal de Goiás, 2016-04-20) Pires, Marília Ferreira; Café, Marcos Barcellos; http://lattes.cnpq.br/9860968235125158; Stringhini, José Henrique; http://lattes.cnpq.br/8505634095383289; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Santos, Bruno Moreira dos; Carvalho, Fabyola de BarrosThe objective of the present study was to evaluate the effect of adding increasing levels of protected sodium butyrate in the diet of laying hens from 61 weeks of age on performance, egg quality and intestinal parameters. The treatments were 0, 105, 210 and 300 g / t of sodium butyrate protected in the feed. To evaluate the performance and quality of eggs, 320 laying hens were used as Dekalb Whyte lineage (61-76 weeks old) in cages and distributed design in blocks (with the weight of the blocky birds), with four treatments and eight replicates of 10 birds. The experiment was 16 weeks divided into four periods of 28 days each. The 76 weeks of age were separated 48 birds for metabolism trial with four treatments and six replicates of two birds. At the end of the assay was sacrificed a repeat per bird for intestinal development analysis. Was conducted analysis of variance and polynomial regression of the data with the help of the statistical program R. Regarding the performance for the period 73-76 weeks of age was negative linear effect for feed conversion (kg feed / kg eggs). For quality variables eggs were observed increasing linear effect for shell thickness in the periods 61-64 and 65-68 weeks and during the periods 69-72 and 73-76 weeks were observed quadratic effect with maximum point 199 and 174 g / t sodium butyrate protected, respectively. For specific gravity quadratic effect was found with a maximum point at 177 g / t sodium butyrate protected only in the period 73-76 weeks. To the percentage of peeling was found quadratic effect on periods 69-72 and 73 to 76 weeks, with a maximum at point 89 and 172 g / t sodium butyrate protected, respectively. To yolk index found a quadratic effect in the period 69-72 weeks of age with a minimum point at 189 g / t of protected sodium butyrate. When evaluating albume index, found a negative linear effect in the period 69-72 weeks of age. For Haugh unit regression was effective only in the period 65-68 weeks with a quadratic effect, with maximum point at 142 g / t of sodium butyrate. In total period was observed quadratic effect for shell thickness, percentage of peel and breakage resistance, in which maximum points were found in 193; 136 and 198 g / t sodium butyrate protected, respectively. When evaluating yolk index in the total period, found a quadratic effect with minimum point at 181 g / t. For intestinal development variables it was found negative linear effect for the length of the jejunum. For height of villi, it found a linear increase in the duodenum and jejunum. For crypt depth, quadratic effect was found in the jejunum with a minimum point at 151 g / t sodium butyrate protected. For the variable villous / crypt ratio was found linear increase in the duodenum and jejunum, and the ileum quadratic effect, with maximum point at 171 g / t. For BN was found quadratic effect with maximum point at 93 g / t, and for BEE was found increasing linear effect. For EMA and EMAn variables were found increasing linear effect. The addition of protected sodium butyrate in laying hens diet did not influence the performance of the birds, but improved the quality of skin and intestinal parameters (intestinal development and metabolization of nutrients). It is recommended to improve the quality of shell eggs in layers in the final production phase, the level of 150 g / t sodium butyrate protected. For intestinal development and diet metabolizable energy level of 300 g / t of sodium butyrate protected.