-The objective of the present study was to evaluate the effect of using microminerals in organic form on the performance and quality of eggs from commercial laying hens at the end of laying. Four hundred and eighty Hisex strain hens, 72 to 80 weeks of age, were used. A randomized complete design was used, with six replications and 16 birds for each experimental unit. Five diets were evaluated: basal feed supplemented with all microminerals in inorganic form (control); basal feed supplemented with 50% microminerals zinc (Zn) + manganese (Mn) + copper (Cu) in organic form and 50% in inorganic form; basal feed supplemented with 50% zinc in organic form and 50% in inorganic form; basal feed supplemented with 50% manganese in organic form and 50% in inorganic form; and basal feed supplemented with 50% copper in organic form and 50% in inorganic form. There was no effect of diets on egg production, feed intake, food conversion and egg shell percentage and thickness. Birds fed basal feed supplemented only with zinc or manganese in organic form produced eggs with lower specific weight. The use of basal feed supplemented with copper in organic form has minimized egg loss. However, the best results (lower egg loss, higher specific weight and higher weight of eggs) were obtained with the basal feed supplemented with microminerals Zn + Mn + Cu in organic form and, therefore, it is recommended for feeding of commercial laying at the end of laying.Key Words: egg characteristics, laying hens, minerals, production Efeito da utilização de microminerais orgânicos sobre o desempenho e a qualidade externa dos ovos de poedeiras comerciais em final de postura RESUMO -Um experimento foi realizado com o objetivo de avaliar o efeito da utilização de microminerais na forma orgânica sobre o desempenho e a qualidade dos ovos de poedeiras comerciais em final de postura. Foram utilizadas 480 galinhas da linhagem Hisex com 72 a 80 semanas de idade, distribuídas em delineamento inteiramente casualizado, com 6 repetições e 16 aves por parcela. Foram avaliadas cinco dietas: ração basal suplementada com todos os microminerais na forma inorgânica (controle); ração basal suplementada com 50% dos microminerais zinco (Zn) + manganês (Mn) + cobre (Cu) na forma orgânica e 50% na forma inorgânica; ração basal suplementada com 50% de zinco na forma orgânica e 50% na forma inorgânica; ração basal suplementada com 50% de manganês na forma orgânica e 50% na forma inorgânica e ração basal suplementada com 50% de cobre na forma orgânica e 50% na forma inorgânica. Não houve efeito das dietas sobre a produção de ovos, o consumo de ração, a conversão alimentar, a porcentagem e a espessura de casca. As aves que consumiram a ração basal suplementada apenas com zinco ou manganês na forma orgânica produziram ovos com menor peso específico. A utilização da ração basal suplementada com cobre na forma orgânica proporcionou menor perda de ovos. Porém, os melhores resultados foram obtidos com a ração basal suplementada com os microminerais Zn + Mn + Cu na forma ...

This study aimed at evaluating live performance and carcass yield of broilers fed vegetarian diets or containing different animal byproduct meals after 8 days of age. In the experiment, 1080 one-day-old male chicks were distributed in a completely randomized experimental design with 6 treatments with 6 replicates. Diets were based on corn and soybean meal, and included or not animal meals, maintaining constant levels of minerals (calcium, phosphorus, and sodium) and amino acids (methionine, cystine, lysine, and threonine), The following treatments were applied: T1. Control (corn and soybean diet); T2. Inclusion of 5% meat and bone meal (MBM); T3. Inclusion of 5% blood meal (BM); T4. Inclusion of 5% feather meal (FM); T5. Inclusion of 5% poultry offal meal (OM); T6. Combination of meat and bone meal, feather meal, offal meal, and blood meal. Broiler weight gain, feed intake, feed conversion, livability and carcass yield were evaluated. At 35 days of age, it was verified that the combination of the four animal meals compromised weight gain. Broiler performance at 42 days of age was influenced by treatments, and the worst weight gain and true feed conversion were observed in birds fed diets with the combination of the four animal meals. The inclusion of 5% BM negatively affected the weight gain. It is concluded that MBM, FM, and OM inclusion can be individually used with no negative influence on broiler performance or carcass yield. In addition, it reduces feed costs

Desempenho. Rendimento de carcaça. Viabilidade econômica. ADDITIONAL KEYWORDSPerformance. Carcass yield. Economic viability. RESUMOObjetivou-se com este experimento avaliar os efeitos da suplementação de carboidrases de forma individual (α-amilase) ou associada ao complexo enzimático (α-galactosidase, galactomananase, xilanase e ß-glucanase), sobre o desempenho, rendimento de carcaça e viabilidade econômica em rações para frangos de corte. Foram utilizados 576 pintos de corte, fêmeas, da linhagem Cobb, distribuídos em delineamento inteiramente casualizado constituído por 4 tratamentos e 6 repetições de 24 aves cada. As rações foram formuladas à base de milho e farelo de soja, sendo os tratamentos constituídos por CP= ração-controle-positivo; CN= ração-controle-negativo, com redução em 35 Kcal na fase inicial e 70 Kcal/kg de ração para as fases de crescimento e final; RA= ração reformulada com amilase exógena (isonutriente a CP) e RE= ração reformulada com α-amilase exógena e complexo enzimático (isonutriente a CP). A matriz nutricional da amilase exógena na ração RA foi de 116,67 Kcal/kg na fase inicial e 233,34 Kcal/kg nas fases de crescimento e final. Para a ração RE a matriz nutricional da amilase exógena foi de 116,67 Kcal/ kg na fase inicial e 200,00 Kcal/kg nas fases de crescimento e final. Houve valoração dos ingredientes milho e farelo de soja em 1,5 e 6% na EMAn, respectivamente e 2% nos aminoácidos limitantes para ambos ingredientes. As médias de desempenho foram avaliadas nos períodos de 1 a 21, 1 a 35 e 1 a 42 dias. A avaliação de rendimento de carcaça e cortes, bem como a viabilidade econômica foi avaliada aos 42 dias. O consumo de ração, em todos os períodos, não diferiu significativamente entre os tratamentos avaliados (p>0,05). Da mesma forma, o ganho de peso no período total, de 1 a 42 dias, não ocasionou diferença entre os tratamentos. A pior conversão alimentar e fatores de produção (p<0,05) foram obtidos pelos animais submetidos à ração com complexo enzimático. Não houve diferença significativa no rendimento de carcaça e de nenhum corte avaliado (p>0,05). A utilização de complexo enzimático associado à enzima exógena α-amilase piora o desempenho e gera mesma resposta econômica na produção de frangos de corte, sem alterar o rendimento de carcaça e de seus cortes. SUMMARYThis work was carried out in order to evaluate the effects of supplemental carbohydrases individually (α-amylase) or associated with the enzyme complex (α-galactosidase, galactomananase, xylanase and β-glucanase) on performance, carcass yield and economic viability in diets for broiler. Were used 576 females chicks, Cobb lineage, distributed in a completely randomized design consisting of 4 treatments and 6 replicates of 24 birds each plot. The diets were formulated based on corn and soybean meal, and the treatments consisted of PC= positive control diet

RESUMORealizou-se este trabalho no setor de avicultura de DZO-UFLA, durante o período de junho a outubro de 2003. Foram utilizados 112 galos reprodutores da linhagem Lohmann-LSL, de 16 até 32 semanas de idade. As aves foram distribuídas num delineamento em blocos ao acaso, em arranjo fatorial 3x2 + 1, com três tipos de óleo (Soja, Canola e Girassol), e dois níveis de vitamina E (200 e 400 mg/kg de ração) e o controle (sem óleo e 0 mg de suplementação de vitamina E). As rações experimentais foram elaboradas à base de milho e farelo de soja. Nas 28ª e 29ª semanas foram realizadas coletas de sêmen para avaliação da motilidade, volume do sêmen, concentração, número de células totais e a morfologia espermática. As análises foram realizadas com utilização do programa SAEG. Foi observada interação significativa (P=0,08) entre as fontes de óleos testadas e os níveis de vitamina E, para a motilidade espermática na 28ª semana de idade. Não foi observada diferença significativa (P>0,05) entre as fontes de óleo nem entre os níveis de vitamina E para nenhuma das variáveis estudadas. Conclui-se que qualquer fonte de óleo das utilizadas neste estudo pode ser adicionada à ração de galos reprodutores sem necessidade de elevados níveis de vitamina E.Termos para Indexação: Galos reprodutores, ácidos graxos essenciais, vitamina E. ABSTRACTThe objective of this study was evaluate breeding and productive performance of Lohmann-LSL roosters. A total of 112 breeding roosters from 16 to 32 weeks of age were allotted to a randomized block design in a 3 x 2 + 1 factorial arrangement, with three sources of oil (soybean, canola and sunflower in 3%of inclusion ) and two levels of antioxidant (200 and 400 mg of vitamin E/kg of diet) and the control diet (without oil and 0 mg of supplementation of vitamin E). The experimental diets were made based on corn and soybean meal. At 28 and 29 weeks, semen collection was performed for evaluation of sperm motility, semen volume, concentration and number of total cells. At 29 weeks of age, semen collection was performed to evaluate sperm morphology, rate of osmotic resistance and heat-resistance of spermatozoa. Four roosters per treatment were slaughtered at 30 weeks of age for removal of the testes which were weighted and a sample was obtained for evaluation of the thickness of the seminiferous epithelium, diameter and the population of seminiferous tubule cells. Blood samplings were collected for evaluation of triglycerides and cholesterol. During the experimental period from 16 to 30 weeks , feed intake and total weight gain were evaluated. The true fertility test was performed at 32 weeks of age. The data were evaluated by analysis of variance using the SAEG program. Significant interaction (P<0.05) was found between sources of oil and the levels of vitamin E as well as among the sources of oils for total weight gain, seminiferous epithelium thickness and body weight at 30 weeks of age. Significant difference (P<0.05) was verified among the levels of vitamin E for the levels of triglycerides, choles...

The objective of this study was to evaluate the performance and carcass characteristics of broilers fed exclusively vegetable diets and diets containing animal meal with the addition of creatine or not after day 8. In the experiment, 1080 one-day-old male chicks were distributed according to a completely randomized experimental design into six treatments with six replicates each. A control diet based on corn and soybean meal was formulated, to which animal meals and creatine were included or not. Diets were formulated to contain equal mineral (calcium, phosphorus and sodium) and amino acid (available methionine + cystine, lysine and threonine) levels. The following treatments were applied: A. control (diet based on corn and soybean meal); B. control + creatine (600g/ton); C. inclusion of 5% meat and bone meal (MBM), D. inclusion of 5% MBM + creatine (600g/ton), E. inclusion of 5% blood meal (BM), F. inclusion 5% BM + creatine (600g/ton). Weight gain, feed intake, feed conversion, carcass yield and viability were evaluated. At 42 days of age, BM dietary inclusion impaired weight gain and feed conversion ratio. The inclusion of MBM affected only feed conversion ratio. The addition of creatine ito the diet with BM improved weight gain when compared with the BM diet with no creatine. The addition of creatine to the diet containing 5% BM improved weight gain when compared with the same diet without the use of the additive.