The objective of this study was to evaluate the effect of digestible methionine and cystine (Met + Cys) levels on the hematological and serum biochemical parameters of broiler chickens during the initial and growth stages. For this, 1,800 male chicks of the Coob 500 strain were used, with 900 chicks in the initial phase (1 to 21 days old) and 900 chicks in the growth phase (22 to 42 days old), distributed in a completely randomized design of five treatments with six replicates of 30 birds. The treatments consisted of 0.545, 0.616, 0.711, 0.782, and 0.853%; and 0.514, 0.571, 0.647, 0.704, and 0.761% digestible Met + Cys for “1 to 21” and “22 to 42” days of breeding, respectively. Results showed that digestible Met + Cys levels in broiler feed altered some hematological parameters (erythrocyte, hematocrit hemoglobin, total leukocytes, heterophile: lymphocyte) and serum biochemistry (uric acid, PST, total LDL, and TG). The digestible Met + Cys levels in the diet of broilers affected the hematological parameters and serum biochemistry, especially at higher levels. From the inclusion level 0.761 of Met + Cist in the broiler diet, red blood cells, hemoglobin and hematocrit changes begin to appear.

RESUMO A eletroforese é uma técnica laboratorial simples que fraciona proteínas presentes em diversos tipos de fluido, levando em consideração suas cargas elétricas e/ou seu peso molecular. A técnica utiliza forças eletroforéticas e eletroendosmóticas, onde um pólo positivo (ânodo) e outro negativo (cátodo) geram um potencial elétrico, que promove a migração proteica, gerando diferentes bandas, representadas por albumina e globulinas alfa, beta e gama. Dois métodos de eletroforese são utilizados atualmente, sendo eles: a eletroforese convencional por zonas e a eletroforese capilar. No primeiro método, as proteínas migram através dos poros presentes em suportes como acetato de celulose, gel de agarose ou poliacrilamida, formando zonas de proteínas no eletroforetograma. Já no segundo, as proteínas são separadas pelo seu tamanho e por outras propriedades físico-químicas, através do fluxo em um tubo capilar. Na medicina veterinária, além de ser empregada na clínica, contribuindo com o diagnóstico e o prognóstico de várias doenças, a técnica tem sido utilizada em diversas outras áreas, apresentando ampla aplicabilidade em situações distintas. Desta forma, o objetivo do presente trabalho é apresentar uma breve revisão sobre a eletroforese de proteínas, destacando as principais técnicas existentes e proteínas fracionadas, além de sua aplicação e importância na medicina veterinária. PALAVRAS-CHAVE: Fracionamento proteico, medicina veterinária, proteinograma.

Giant Anteater (Myrmecophaga tridactyla Linnaeus, 1758) of the brazilian cerrado: hematology and storage effect. Pesquisa Veterinária Brasileira 37 (7): [773][774][775][776][777][778][779][780]. Laborató-rio Clínico Veterinário, Hospital Veterinário, Departamento de Medicina Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Rodovia Goiânia Km 8, Campus Samambaia, Goiânia, GO, Giant Anteater (Myrmecophaga tridactyla) is a vulnerable species because of progressive habitat destruction, mostly affected by wildfires and car accidents. The increasing number of animals that are attended by wildlife rescue centres reinforces the need of knowledge about haematological parameters, especially for those that inhabit Brazilian cerrado biome. For this purpose and in order to establish reference values for this species and also to compare them with previous studies, haematological analysis of captive giant anteaters from Brazilian cerrado were performed. Moreover, the alterations of blood samples after 24 and 48 hours of storage at refrigeration temperatures (4 o C) and preserved with two different EDTA concentrations (5% and 10%) were studied. Means and standard deviations of haematological parameters analysed immediately after collection were: RBC: 2,07 x106/µL ± 0,40; hematocrit: 38,08%± 5,93; haemoglobin: 11.33g/dL±2.15; MCV:186.52 fL±21.72; MCHC: 29.68g/dL±2.56; MCH: 55.08pcg±5,94; total leucocytes: 8.142/µL±2.441; neutrophils: 5.913/µL±2.168; lymphocytes: 1.460/ µL±740; eosinophil: 522/µL±385; monocytes: 247/µL±176; thrombocytes: 123.458/ µL±31.362 and total plasma protein: 6.23g/dL±0.49. This data shows evidence of the existence of important differences between these values and others from other areas, either from Brazil or from other South American countries. Those variations might be connected to environment, genetic, nutritional and/or management factors. Regarding the storage effect analysis, it can be concluded that in giant anteaters, haematological analysis can be performed until 24h after collection without any significant alterations on the haematological parameters, except for thrombocytes. Concerning the different EDTA concentrations, it can be concluded that there are no quantitative differences in haematological variables. Nevertheless, relevant morphologic alterations in blood cells can be observed after a 24h storage period, being most noticeable in the leucocytes. Those alterations can lead to misinterpretation of the results, interfering diagnosis, prognosis and treatment. (6,23g/dL±0,49). Tais dados permitem afirmar que existem importantes diferenças entre os valores hematoló-gicos destes em relação aos animais provenientes de outras regiões, tanto do Brasil quanto de outros países da América do Sul. Provavelmente, tais divergências estão associadas a fatores ambientais, genéticos, nutricionais e/ou de manejo. Quanto à análise das amostras estocadas, conclui-se que, em tamanduás-bandeiras, as amostras para a realização de hemograma podem ser processadas até 24 horas após a...

The giant anteater (Myrmecophaga tridactyla) is classified as a vulnerable species on Brazil’s list of species at risk of extinction mainly due to deforestation and forest fires. This has contributed to a considerable increase in detailed clinical case records of the treatment of wild species at veterinary institutions. However, the paucity of serum biochemical profiles of healthy giant anteaters has made it difficult to evaluate these animals, preventing diagnosis, treatment and prognosis. The objective of this work was to collect data about the biochemical profile of healthy giant anteaters from the Brazilian Cerrado raised in captivity, in order to better understand the physiological characteristics inherent to this species. Eighteen analytes from 12 healthy giant anteaters were measured. The following means and standard deviations were found in the biochemical analyses: albumin 3.29±0.33g/dL, ALT 15.49±7.98 IU/L, amylase 1037.92±149.04 IU/L, AST 21, 12±7.50 IU/L, total cholesterol 62.79±20.08mg/dL, HDL cholesterol 14.73±4.98mg/dL, LDL cholesterol 26.60±11.05mg/dL, VLDL cholesterol 2.14±1.06mg/dL, CK 111.61±70.16 IU/L, creatinine 1.05±0.37mg/dL, iron 194.64±81.17μg/dL, GGT 65.18±54.57 IU/L, glucose 103.71±29.63mg/dL, globulins 2.76±0.36g/dL, lipase 28.80±5.11 IU/L,TSP 6.05±0.56g/dL, triglycerides 10.71±5.29mg/dL, and urea 53.46±18.28mg/dL. The values found in this study can be used as references for the laboratory evaluation of giant anteaters living in conditions similar to those of this study. This is one of the first reports of biochemical examinations on giant anteaters of the Cerrado biome.