55 research outputs found
Effect of diets with different levels of guanidinoacetic acid on newly weaned piglets
Ninety barrow piglets weaned at 21 days old were used to evaluate the effects of guanidinoacetic acid (GAA) supplementation on their performance and blood creatinine and creatine kinase (CK) levels during the nursery phase (21 to 63 days old). The piglets were distributed in a randomized block design with five treatments (0, 0.05, 0.10, 0.15, and 0.20% GAA inclusion), six repetitions, and three animals per repetition. The experimental rations were formulated to meet the nutritional requirements for the phases of 21 to 32, 33 to 42 and 43 to 63 days of age. The experimental diets and water were offered ad libitum throughout the experimental period. At 42 and 63 days old, blood was collected from one animal in each experimental unit for creatinine and creatine kinase analysis. The analysed variables were daily weight gain (DFG), daily feed intake (DFI), and feed conversion (FC) in the 21 to 42 days old and 21 to 63 days old of the nursery phase. All variables were subjected to analysis of variance and regression analysis. We adopted ? = 0.05, and considered a trend to be present when ? was between 0.05 and 0.10. In the pre-initial period (21 to 42 days old), there was an increasing trend in daily weight (P = 0.069), which increased to the level of 0.97% of GAA inclusion. The DFI and FC were not significantly affected by the addition of different GAA levels in the diet. Creatinine levels in the blood at 42 and 63 days old were not significantly influenced by the treatments. The level of CK at 42 days old showed an increasing trend (P = 0.077) that occurred quadratically to the level of 0.085% of GAA inclusion, with no significant difference for this variable at 63 days old. The use of GAA did not promote improvements in performance or blood creatinine and CK levels in piglets in the nursery phase
O Serviço de documentação textual e iconografia do Museu Paulista
The essay compares the curatorship's works realized during the decade of 1990 by the actual Department of Textual and Iconographical Documentation of Museu Paulista, responsible for the MP Fund / Permanent File (Fundo MP/Arquivo Permanente), hundreds of collections and textual funds and 50.000 iconography pieces, great part of which are gathered in photographic collections. It shows how the documentation work extrapolates the limits of SVDHICO in order to integrate itself with the group activities of the museum and with other research groups. It also points towards new work methodologies which allow to perform the curatorship in an integrated way with the interdisciplinary research and the culture diffusion.O artigo faz um balanço dos trabalhos de curadoria realizados durante a década de 1990 pelo atual Serviço de Documentação Textual e Iconografia do Museu Paulista, responsåvel pelo Fundo MP/Arquivo Permanente, centenas de coleçÔes e fundos textuais e 50.000 peças de iconografia, grande parte delas reunidas em coleçÔes fotogråficas. Mostra como o trabalho de documentação extrapola os limites do SVDHICO para integrar-se com as atividades de conjunto do Museu e com outros grupos de pesquisa. Aponta também para novas metodologias de trabalho com imagens que permitem realizar a curadoria de forma integrada à pesquisa interdisciplinar e à difusão cultural
Composição quĂmica e energĂ©tica de alimentos de origem vegetal determinada em aves de diferentes idades
Digestible tryptophan:digestible lysine ratio in diets for laying hens from 24 to 40 weeks of age
ExigĂȘncia nutricional de lisina digestĂvel para galinhas poedeiras de 54 a 70 semanas de idade
ExigĂȘncia nutricional de metionina+cistina digestĂveis para galinhas poedeiras de 54 a 70 semanas de idade
Determination of values of metabolizable energy of feedstuffs for poultry in differents ages
Foram realizados quatro ensaios de metabolismo no Departamento de Zootecnia da Universidade Federal de Viçosa com a finalidade de determinar a energia metabolizĂĄvel aparente (EMA) e energia metabolizĂĄvel aparente corrigida (EMAn) de 10 alimentos para aves em diferentes idades. Os alimentos testados foram: milho, farelo de soja, sorgo, farelo de trigo, farelo de arroz integral, duas farinhas de penas, duas farinhas de vĂsceras e plasma sangĂŒĂneo. Utilizou-se o mĂ©todo de coleta total de excretas para a determinação dos valores de EMA e EMAn. Os tratamentos consistiram dos 10 alimentos testados e uma ração referĂȘncia. O delineamento experimental utilizado para todos os ensaios foi o inteiramente casualizado, com 11 tratamentos e 6 repetiçÔes, apresentando diferentes nĂșmeros de aves por repetição, de acordo com o ensaio realizado. No primeiro ensaio foram utilizados 528 pintos de corte machos de 10 a 17 dias de idade, sendo 8 aves por repetição. No segundo ensaio foram utilizados 396 frangos de corte machos de 26 a 33 dias de idade, sendo 6 aves por repetição. No terceiro ensaio foram utilizados 264 frangos de corte machos de 40 a 47 dias de idade, sendo 4 aves por repetição. No quarto ensaio foram utilizados 132 galos, sendo 2 aves por repetição. Os valores de EMA e EMAn, em kcal/kg com base na matĂ©ria natural, determinados com pintos de 10 a 17 dias de idade foram, respectivamente: 3167 e 3168 para o milho; 1759 e 1748 para o farelo de soja; 2738 e 2732 para o sorgo; 1588 e 1579 para o farelo de trigo; 2111 e 2105 para o farelo de arroz integral; 3889 e 3860 para a farinha de vĂsceras 1; 3992 e 3959 para a farinha de vĂsceras 2; 2633 e 2607 para a farinha de penas 1; 2627 e 2599 para a farinha de penas 2 e 2805 e 2776 para o plasma sangĂŒĂneo. Os valores de EMA e EMAn, em kcal/kg com base na matĂ©ria natural, determinados com frangos de 26 a 33 dias de idade foram, respectivamente: 3144 e 3135 para o milho; 2206 e 2192 para o farelo de soja; 3019 e 3012 para o sorgo; 1624 e 1621 para o farelo de trigo; 2143 e 2137 para o farelo de arroz integral; 3924 e 3891 para a farinha de vĂsceras 1; 3854 e 3822 para a farinha de vĂsceras 2; 3071 e 3039 para a farinha de penas 1; 3274 e 3237 para a farinha de penas 2 e 3652 e 3610 para o plasma sangĂŒĂneo. Os valores de EMA e EMAn, em kcal/kg com base na matĂ©ria natural, determinados com frangos de 40 a 47 dias de idade foram, respectivamente: 3390 e 3389 para o milho; 2247 e 2236 para o farelo de soja; 3091 e 3088 para o sorgo; 1739 e 1738 para o farelo de trigo; 2047 e 2047 para o farelo de arroz integral; 4024 e 3992 para a farinha de vĂsceras 1; 3863 e 3837 para a farinha de vĂsceras 2; 3166 e 3128 para a farinha de penas 1; 3391 e 3347 para a farinha de penas 2 e 3505 e 3461 para o plasma sangĂŒĂneo. Os valores de EMA e EMAn, em kcal/kg com base na matĂ©ria natural, determinados com galos foram, respectivamente: 3371 e 3364 para o milho; 2165 e 2153 para o farelo de soja; 3303 e 3296 para o sorgo; 1925 e 1921 para o farelo de trigo; 2615 e 2611 para o farelo de arroz integral; 4039 e 4009 para a farinha de vĂsceras 1; 3896 e 3874 para a farinha de vĂsceras 2; 3247 e 3216 para a farinha de penas 1; 3239 e 3209 para a farinha de penas 2 e 2982 e 2962 para o plasma sangĂŒĂneo.Four assays were carried out at Animal Science s Department of the Universidade Federal de Viçosa to determine the apparent metabolizable energy (AME) and nitrogen corrected apparent metabolizable energy (AMEn) of ten feedstuffs for poultry at different poultry ages. The feedstuffs studied were: corn grain, soybean meal, ground sorghum, wheat bran, integral rice bran, two kinds of feather meal, two kinds of poultry viscera meal and spray-dried plasma. The method of total excreta collection was used to determine the value os AME and AMEn. The treatments were the ten feedstuffs studied and one ration reference. The broiler chicks were distributed on completely randomized experimental design, with 11 treatments, 6 repetitions, with differents numbers of animals by repetition according with assay. In the first assay, it was used 528 broiler chicks males in the period of 10 to 17 days of age, with 8 animals by repetition. In the second assay, it was used 396 broiler chicks males in the period of 26 to 33 days of age, with 6 animals by repetition. In the third assay it was used 264 broiler chicks males in the period of 40 to 47 days of age, with 4 animals by repetition. In the fourth assay it was used 132 roosters, with 2 animals by repetition. The AME and AMEn values (kcal/kg), expressed as fed basis, determined with broiler chicks in the period of 10 to 17 days of age were, respectively: 3167 and 3168 for corn grain; 1759 and 1748 for soybean meal; 2738 and 2732 for ground sorghum; 1588 and 1579 for wheat bran; 2111 and 2105 for integral rice bran; 3889 and 3860 for poultry viscera meal 1; 3992 and 3959 for poultry viscera meal 2; 2633 and 2607 for feather meal 1; 2627 and 2599 for feather meal 2, and 2805 and 2776 for spray-dried plasma. The AME and AMEn values (kcal/kg), expressed as fed basis, determined with broiler chicks in the period of 26 to 33 days of age were, respectively: 3144 and 3135 for corn grain; 2206 and 2192 for soybean meal; 3019 and 3012 for ground sorghum; 1624 and 1621 for wheat bran; 2143 and 2137 for integral rice bran; 3924 and 3891 for poultry viscera meal 1; 3854 and 3822 for poultry viscera meal 2; 3071 and 3039 for feather meal 1; 3274 and 3237 for feather meal 2, and 3652 and 3610 for spray-dried plasma. The AME and AMEn values (kcal/kg), expressed as fed basis, determined with broilers in the period of 40 to 47 days of age were, respectively: 3390 and 3389 for corn grain; 2247 and 2236 for soybean meal; 3091 and 3088 for ground sorghum; 1739 and 1738 for wheat bran; 2047 and 2047 for integral rice bran; 4024 and 3992 for poultry viscera meal 1; 3863 and 3837 poultry viscera meal 2; 3166 and 3128 for feather meal 1; 3391 and 3347 for feather meal 2, and 3505 and 3461 for spray-dried plasma. The AME and AMEn values (kcal/kg), expressed as fed basis, determined with roosters were, respectively: 3371 and 3364 for corn grain; 2165 and 2153 for soybean meal; 3303 and 3296 for ground sorghum; 1925 and 1921 for wheat bran; 2615 and 2611 for integral rice bran; 4039 and 4009 for poultry viscera meal 1; 3896 e 3874 for poultry viscera meal 2; 3247 and 3216 for feather meal 1; 3239 and 3209 for feather meal 2 , and 2982 and 2962 for spray-dried plasma.Conselho Nacional de Desenvolvimento CientĂfico e TecnolĂłgic
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