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Item Suplementação in ovo de vitamina E e cantaxantina para embriões de frango de corte(Universidade Federal de Goiás, 2017-11-09) Araújo, Itallo Conrado Sousa de; Café, Marcos Barcellos; Mello, Heloisa Helena Carvalho; http://lattes.cnpq.br/9860968235125158; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Stringhini, José Henrique; Lopes, Karina Ludovico Almeida Martinez; Carvalho, Fabyola Barros; Lara, Leonardo José CamargosTwo experiments were conducted to avaluate the effect of in ovo supplementation of antioxidants to broiler chickens on neonatal oxidative status, incubation results, chick quality and broiler performance. In the first experiment, five levels of vitamin E (0.0, 25.0, 35.0, 45.0 and 55.0 mg) were diluted in 0.5 mL of sunflower oil and in the second experiment five levels were used of cantaxanthin (0.000, 0.035, 0.045, 0.055 and 0.065 mg) obtained from a commercial product (canthaxanthin 10%), diluted with 0.5 mL of distilled water. In both experiments were used 780 eggs, distributed in three incubators (block), 260 eggs in each. Vitamin E supplementation improved egg hatchability, lower birth rate of chicks and better physical quality of chicks. There was also a positive response in the small intestine weight and villus height of the duodenum of the chicks, which provided improvement in feed conversion for all the periods studied during the performance. The results of protein concentration in the liver and striated muscle were higher for the chicks that received vitamin E. It was concluded that vitamin E supplementation in ovo improves the oxidative state of the chick and this improves the incubation results, quality of the chick and performance in the initial phase. On the other hand, supplementation with the commercial product of canthaxanthin showed worsening for the hatching and birth window variables, with a consequent increase in the number of neonatal chicks with physical quality below 71 points. Supplementation of canthaxanthin did not influence the weight or length of neonatal chicks. Furthermore, it was possible to verify a higher amount of total proteins in the liver of the chicks supplemented with the commercial product of canthaxanthin, it was also possible to verify improvement in the catalase activity present in the chicks liver. It can be concluded that the commercial product is not indicated for inoculation in ovo because it contains compounds that hinder chicks hatching. However, the improvement in oxidative status was evident, and further studies could be indicated with the use of pure canthaxanthin in ovo for broiler chickens.Item Desenvolvimento do trato gastrintestinal de aves de corte de genótipos de crescimento lento na fase inicial e digestibilidade de alimentos(Universidade Federal de Goiás, 2019-04-18) Assis, Saullo Diogo de; Stringhini, José Henrique; http://lattes.cnpq.br/8505634095383289; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Café, Marcos Barcellos; Leite, Paulo Ricardo de Sá da Costa; Minafra, Cibele da Silva; Hellmeister Filho, PauloThree experiments were carried out with the objective of evaluating the differences in performance, nutritional utilization of the ration and development of the digestive tract of four slow - growing broiler strains. The effects of the breeding system on the development of the digestive tract and determine the metabolizable energy values of the main feed of broiler chickens slow growing. In the experiment I were evaluated the zootechnical performance, the bioeconomic index and the metabolizability of the nutrients of the ration of different strains of slow - growth and early - growth broilers. A total of 544 day - old chicks, 136 of each genotypes were used: Label Rouge Pesadão, Isa Label Rouge Naked Neck, Carijó and CarijóNaked Neck, distributed randomly in eight replicates of 17 animals each. The studied variables were performance, bioeconomic index, nutrient metabolizable coefficients, apparent metabolizable energy (EMA) and apparent metabolizable energy corrected for nitrogen balance (AMEn). In experiment II, 600 slow - growing chickens (Label Rouge Naked Neck) were housed initially in a conventional masonry shed, raised up to 70 days old. At 35 days of age they were divided into two groups, one of which had access to free area and another one remained in the shed until the end of the experiment. The variables studied were live weight, digestive tract development and intestinal histomorphometry at different ages. For experiment III, six hundred broiler chicks of the Label Rouge Naked Neck line were used. The treatments consisted of seven foods and one reference diet. The methodology used was the total collection of excreta. The tested foods were: soybean meal, corn grain, rice bran, sorghum grain, 60% corn gluten, wheat bran and soybean oil. There were differences (P <0.05) for live weight, weight gain, feed intake and feed conversion among the four lines studied, at 7, 14, 21, 28and 63 days of age. The Carijó Neck strain showed the worst performance results from 1 to 63 days of age compared to the other lines studied. There was a difference (P <0.05) for the bioeconomic index (IBE). The Carijó, Label Rouge Neck and Label rouge lines had the highest IBE values. The metabolizable coefficients of the nutrients differed (P <0.05) between the lines at seven and 21 days of age. The highest value of the metabolizable coefficient of the protein and mineral matter of the diet was obtained by the Carijó line at seven and 21 days of age. There was a difference (P <0.05) between the lineages in live weight, allometry of digestive tract organs and intestinal histomorphometry at one, seven and 28 days of age. The breeding systems influenced (<0.05) the live weight and the allometry of the organs of the digestive system of broiler chickens of the Isa Label Neck Snack Line at 72 days of age. The semiconfined breeding system improved the performance and growth of the small intestine of the Isa Label Naked Neck line. The values of AMEn (kcal / kg) of foods based on natural matter were: soybean meal, 2215 kcal / kg; corn grain, 3568 kcal / kg; sorghum grain, 3212 kcal / kg; rice bran, 2365 kcal / kg; wheat bran, 2482 kcal / kg; soybean oil, 7902 kcal / kg and 60% corn gluten, 2860 kcal / kg. The slow growing strains present differences in performance, nutritional utilization, allometric digestion tract and energetic utilization of the ration when compared to each other.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 Extrato padronizado em compostos fenólicos de resíduos agroindustriais de goiaba em rações para frango(Universidade Federal de Goiás, 2018-01-19) Noleto, Raiana Almeida; Stringhini , José Henrique; http://lattes.cnpq.br/8505634095383289; Conceição, Edemilson Cardoso da; http://lattes.cnpq.br/7193007113950510; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Racanicci, Aline Mondini Calil; Rocha, Fernanda Rodrigues Taveira; Carvalho, Fabyola Barros de; Café, Marcos BarcellosThree experiments were carried out to evaluate guava extract standardized on phenolic compounds (GESPC) in broiler ration. In experiment one, were evaluated, total ash and insoluble in acids content, granulometric distribution and the intumescence rate of the plant, in liquid extract were evaluated total phenol content, flavonoids and tannins, antioxidant activity, centesimal composition and fatty acid profile was also evaluated. In experiment two, was evaluated performance, diet nutrients metabolizability, intestine histomorphometry and length, relative weight of digestible and lymphoid organs. A total of 300 male chickens were used, in a completely randomized design (CRD) with five treatments and six replicates with ten birds. Treatments: basal ration (control), basal ration + 120 mg/kg vitamin E or three levels of GESPC (600, 800 and 1000 mg/kg of feed). In experiment tree, performance, carcass yield and cuts, blood biochemistry, feed fatty acid profile, pH and meat color, were evaluated 24 hours after slaughter, lipid oxidation and fatty acid profile of breast and drumstick/thigh meat at 42 days old, after 30 and 60 days of storage. A total of 600 male chickens were used in a completely randomized design with five treatments, and five replicates with 24 birds. Treatment: Basal ration (control), basal ration with 200 mg/kg vitamin E or three levels of GESPC (1,000, 1,300 and 1,600 mg/kg of feed). In experiment one, plant sample presented 5.76% total ashes, 3.22% acid insoluble ashes, moderately thick powder and 2.6 mL of intumescence rate. The extract had 0.166 mg/mL total phenols, 5.97% flavonoids and 0.315 mg/mL of tannins, 96% of moisture, 2.6% proteins, 3.0% lipids and 12 fatty acids. The antioxidant activity: IC50 = 21.7 μg/mL by DPPH method and a percentage of 1.6 x 107 μM Fe 2 SO 4/g by FRAP method. In experiment two, chickens supplemented with extract had higher weight, final weight and better feed conversion at 7 days old. There was a quadratic effect for weight gain, final weight and a decrecent linear for feed conversion at seven days old. Diet nutrients metabolizability was not influenced. In broilers supplemented with 1000 mg/kg or 600 mg/kg of GESPC, intestine length and spleen weight was longer than control group at seven days old, respectively. Chickens fed with rations whit 800 and 1,000 mg/kg of GESPC had higher villi stature in relation to villus cryo in the duodenum in relation to control at 21 days old. In experiment tree carcass performance and yield were not influenced by treatments. Broilers supplemented with 1600 mg/kg of GESPC had higher total protein levels in blood compared to control group or 1,000 mg/kg group. There was a higher volume of globulins in broilers fed with 1600 mg/kg of GESPC, in relation to other treatments. Concentration of HDL was higher in broilers blood fed with ration containing 1,600 mg/kg of GESPC in relation to control groups and 1000 mg/kg of GESPC. A higher pH on broilers breast muscle was observed, when fed with 1300 or 1600 mg/kg of GESPC compared to vitamin E group. In the drumstick/thigh, pH was higher in broilers fed with on 1600 mg/kg of GESPC or vitamin E in relation to control group. The lipid oxidation at 30 days of storage was higher in drumstick/thigh of broilers supplemented with 1,300 and 1,600 mg/kg of GESPC in relation to other treatments. The lipid oxidation at 60 days of storage was higher in drumstick/thigh of broilers supplemented with 1,600 mg/kg of GESPC in relation to other treatments. The liquid extract of guava residue contains bioactive substances, with potential antioxidant activity by the DPPH and FRAP method. The GESPC 800 or 1,000 mg/kg supplementation level may be used in broiler diets considering intestinal performance and development. The EGPCF at doses of 1,300 and 1,600 mg/kg increases the lipid oxidation of broiler meat stored for 30 and 60 days.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 Uso de emulsifiante em dietas de frangos de corte(Universidade Federal de Goiás, 2021-04-01) Oliveira, Marcus Vinicius Garcia de; Café, Marcos Barcellos; http://lattes.cnpq.br/9860968235125158; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Mascarenhas, Alessandra Gimenez; Mendonça, Raiana Almeida Noleto; Sysneiros, Cristine dos Santos Settimi; Lopes, Karina Ludovico de Almeira MartinezTwo experiments were conducted. The first one aimed to study the effects of the emulsifying in diets using three different levels of metabolized energy (ME) (low, recommended and high) in the initial and growth phases of broilers, with a 3x2 factorial. In the initial phase, the diets had 2.950, 3.050, and 3.150 kcal/kg, and in the growth phase, 3.100, 3.150 and 3.200 kcal/kg of ME, with the inclusion of 0,125% of an emulsifying that has soy lecithin as its main component. The aim was to determinate the apparent metabolized energy (AME) and the apparent metabolized energy corrected by nitrogen (AMEn) in diets with three levels of metabolized energy (ME), as well as nitrogen balance (NB), digestibility coefficients of dry matter (DCDM), ether extract (DCEE), nitrogen (DCN), and crude energy (DCCE). It was verified that the inclusion of the emulsifying increased the DCDM, DCN, NB, and AMEn in diets with 2.950 and 3050 kcal/kg, while in the growth phase, the AME and AMEn in diets with lower levels of metabolized energy (3.100 kcal/kg), suggesting the inclusion of the emulsifying in broilers’ diet with lower levels of metabolized energy. The second experiment aimed to study the inclusion of the emulsifying in broilers’ diet with two different fat sources (soy oil and chicken fat), therefore forming a 2x2 factorial. It was used an emulsifying that has soy lecithin as its main component with 0,5% of inclusion (on top). The emulsifying (soy lecithin) improved the broilers’ body weight in 35 (120 g) and 42 (150 g) days old, regardless to the fat source used in the diet, as well as the productive efficiency ratio (416,69). There were no differences to the percentage of ether extract found in the excrete of 7 and 21 days old broilers. To assess the intestinal histomorphometry of 21 days of age, the emulsifying increased the villous height in the intestine of broilers fed with soy oil, not showing any differences to the chicken fat, while in the jejunum, the greatest villous height was found in diets with chicken fat and in the ileum, with soy oil, both of which used the emulsifying. There was no verification of the emulsifying effect and the type of fat for the liver’s histology, but it was verified that the fat source influenced the serum blood profile, which the total cholesterol and high density lipoprotein (HDL) were higher in diets with chicken fat for 7 days old chicks. The glutamic oxaloacetic transaminase (GOT) enzyme showed lower values for diets with soy oil and emulsifying, and the glutamic-pyruvic transaminase (GPT) was higher for the chicken fat, without any effect of the emulsifying for 7 days old chicks. For 21 days old broilers, the GPT was higher for broilers fed with chicken fat in the diet. There was no interaction, as well as emulsifying effect, for the relative liver weight, pancreas and small intestine on the evaluated ages (21 and 42 days), as well as the carcass yield. The inclusion of the emulsifying improved the body weight of 21 and 42 days old broilers, the productive efficiency ratio and the height of the villous, both in the duodenum and jejunum, being indicated its inclusion in the broilers’ diet.Item 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.Item Desempenho e respostas fisiológicas de frangos alimentados com rações processadas termicamente, contendo milho ou sorgo, nas fases pós-eclosão e pré-inicial(Universidade Federal de Goiás, 2020-04-30) Sousa, Regina Fialho de; Carvalho, Fabyola Barros de; http://lattes.cnpq.br/4936451314440305; Leandro, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012; Leandro, Nadja Susana Mogyca; Leite, Paulo Ricardo de Sá da Costa; Café, Marcos Barcellos; Guimarães, Igo Gomes; Oliveira, Eduardo Miranda deResumo em língua estrangeira: Three experiments were carried out to evaluate the performance, the metabolizability of nutrients and the physiological responses of chicks fed with thermally processed feed, containing corn or sorghum, in the post-hatch and in the pre-initial phase. In Experiment I, was evaluated the thermal processing of the post-hatch diet, made with corn or sorghum. The design was completely randomized, in a 2x2 factorial scheme (pelleted or extruded feed, containing corn or sorghum), with four treatments, six replications of 30 chicks each. The experimental diets were supplied in transport boxes for 24 hours after hatching. After the post-hatch phase, all chicks were housed and received the same pre-starter feed. Analysis of variance was performed and the means compared by the Tukey test (5%). After 24 hours, chicks that consumed the pelleted post-hatch diet showed less weight loss. There was greater absorption of nutrients from the yolk sac in chicks that consumed feed with sorghum, regardless of thermal processing. It was also found that post-hatch diets with corn, when extruded, resulted in greater specific amylase activity and lower glucose concentration in chicks. At seven days of age, chicks that consumed feed extruded with corn showed worse feed conversion. In Experiment II, the effect of thermal processing of pre-starter diets with sorghum or corn was evaluated on performance, development of TGI and specific activity of amylase and pancreatic lipase in chicks. were used 360 broiler chicks, distributed in completely randomized, in a 2x2 factorial scheme, two ingredients (corn or sorghum) and two types of thermal processing (extrusion or pelletizing), six repetitions of 15 chicks each. The experimental rations were supplied to the chicks in the pre-initial phase (1 to 7 days) and after all the chicks received the same meal, mash. At seven days of age, it was found that chicks fed with extruded feed, based on sorghum, showed better performance. A greater relative weight of the pancreas, jejunum and ileum was observed when the pre-initial diet was based on sorghum. The extruded feed based on corn resulted in greater specific activity of pancreatic amylase. Chicks that consumed feed extruded with sorghum showed greater height of villus in the duodenum and jejunum. The effect of the pre-starter feed on the weight gain observed at seven days of age remained until 21 days. In Experiment III, the objective was to evaluate the effect of the thermal processing of the pre-initial diet for broiler chicks on the performance, development of the digestive tract and metabolizability of nutrients. were used 270 male chicks, distributed in a completely randomized design, with the treatments: pelleted feed and extruded feed. Analysis of variance was performed. At seven days of age, chicks fed extruded feed had less development of the organs of the gastrointestinal tract, and worse metabolizability of nitrogen, dry matter, in addition to less metabolizable energy compared to pelleted feed. At 21 days of age, chicks that consumed pelletized pre-starter feed showed better performance compared to extruded feed. It is concluded that post-hatch diets based on sorghum, stimulate the absorption of the yolk sac, regardless of the type of thermal processing used. The extrusion of the pre-initial feed produced with sorghum is the processing that results in better performance, development of the organs of the digestive system. Pelletizing of the pre-starter ration is the most suitable thermal processing for corn-based diets, as it results in greater performance and metabolizability of nutrients in broiler chicks.