Hemograma e proteínas do soro sanguíneo de bezerros Canchim-Nelore e da raça Holandesa nos primeiros 30 dias de vida

Rocha, Thaís Gomes; Franciosi, Camila; Nociti, Ricardo Perecin; Nogueira, Clara Asperti; Fagliari, J. J.

doi:10.1590/s0102-09352010000500030

Cited by 8 publications

(11 citation statements)

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“…(Kraft 1967, Birgel 1972, Tennant et al 1974, Bergfeld et al 1977, McMurray et al 1978, Marschang 1986, Adams et al 1992, Benesi 1992, Biondo 1996, sugerindo que este fato poderia estar relacionado ao momento exato da colheita de amostras de sangue no grupo de animais com idade entre o nascimento e 8 horas de vida, que nunca foi imediata ao nascimento e na maioria das vezes, após a primeira mamada do colostro. A evolução dos valores do VG e da Hb, com tendência a diminuição dos valores com a progressão da idade até um mês de vida, também veriϐicada por Rocha et al (2010) em bezerros da raça holandesa, não foi assinalada por outros autores, que a constataram até os dois dias de vida (Tennant et al 1974, Adams et al 1992, Benesi 1992) ou até o ϐinal da primeira semana de vida (Kraft 1967, Birgel 1972, Fagliari et al 1998.…”

Section: Discussionunclassified

“…A comparação dos comportamentos do Volume Corpuscular Médio e Hemoglobina Corpuscular Média com aqueles observados na literatura evidenciam que resultados similares foram obtidos em muitas pesquisas precedentes, pois nestas, logo após o nascimento, os valores do Volume Corpuscular Médio e da Hemoglobina Corpuscular Média mostraram-se elevados, diminuindo com o aumento da idade do neonato (Baglioni et al 1956, Birgel 1972, Tennant et al 1974, Lumsden et al 1980, Adams et al 1992, Benesi 1992, embora tenham divergido daqueles registrados por Kaneko & Mills (1970) e Biondo (1996 Em linhas gerais os resultados obtidos para a Concentração de Hemoglobina Corpuscular Média são concordes com aqueles apresentados na literatura, na qual esse índice é caracterizado como tendo pequenas oscilações do nascimento até um mês de vida (Holman 1956, Kaneko & Mills 1970, Tennant et al 1974, Adams et al 1992, Rocha et al 2010.…”

Section: Discussionunclassified

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Eritrograma de bezerras sadias, da raça Holandesa, no primeiro mês de vida

et al. 2012

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Com a finalidade de estabelecer valores de referência e de avaliar a influência do fator etário sobre o eritrograma de bezerras sadias, da raça Holandesa, utilizaram-se amostras de sangue de 300 animais, distribuídos por 15 grupos experimentais, de acordo com a idade, no primeiro mês de vida. As variações dos valores médios obtidos para os componentes do eritrograma foram as seguintes: número de hemácias (x10(6)/mm³) = 6,68-7,60, volume globular (%) = 29,80-33,35, taxa de hemoglobina (g/dl) = 9,00-10,43, volume corpuscular médio (fl) = 38,93 47,68, hemoglobina corpuscular média (pg) = 11,75-14,69, concentração de hemoglobina corpuscular média (%) = 29,53-31,63% e número de reticulócitos (x10³/mm³) = 0,00-11,86. A influência do fator etário provou-se significativa para o volume corpuscular médio, hemoglobina corpuscular média e número de reticulócitos.

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Section: Discussionunclassified

Eritrograma de bezerras sadias, da raça Holandesa, no primeiro mês de vida

et al. 2012

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“…Os valores e as variações etárias dos componentes do proteinograma sérico podem ser considerados fisioló-gicos, portanto, e são coerentes com relatos anteriores em bezerros das raças Nelore [4,32], Canchim-Nelore [26,27], Limousin [4] e HPB [9,32]. O padrão de variação é o mesmo nos dois grupos estudados e não há particularidades aparentes nos bezerros concebidos por FIV.…”

Section: Discussionunclassified

Passive Transfer of Immunity and Serum Proteinogram during the First 35 Days of Age in Nelore Calves Conceived Naturally or Through In Vitro Fertilization

Lisbôa

Sturion

Anjos

et al. 2016

Acta Scientiae. Vet.

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Background: Some reports indicate that calves produced by in vitro fertilization (IVF) may have excessive birth weights, increasing the rates of dystocia. Prolonged labor can cause the birth of lethargic calves that slowly ingest colostrum; this may compromise the intestinal absorption of immunoglobulins. Although the number of beef calves produced by IVF is high in Brazil, there have been few physiological studies examining the neonatal period in such cases. The aim of this study was to evaluate the passive transfer of immunity, and characterize the variation in serum protein concentrations, in Nelore calves up to 35 days of age, comparing naturally conceived calves with those conceived by IVF. Materials, Methods & Results: Forty healthy newborn Nelore calves were randomly selected and allocated into two groups (n = 20) according to their method of conception (natural versus IVF), and each group was composed of ten males and ten females. All calves were born and raised on the same farm, and kept with their mothers on extensive management condition. Blood samples were collected between 24 and 36 h after birth, and at 7, 14, 21, 28, and 35 days of age. Total protein (TP) concentration in serum was measured by the biuret method, and gamma-glutamyl transferase (GGT) serum activity was measured by the kinetic method. Concentrations of serum albumin, as well as alpha 1-, alpha 2-, beta, and gamma globulins were measured by agarose gel electrophoresis. Serum immunoglobulin G (IgG) concentration was estimated by the zinc sulfate turbidity test. The effects of sex, age, and conception method, on aforementioned serum parameters, were tested by repeated measures ANOVA. Sex of calves did not affect the studied variables (P > 0.05) and there was no interaction between the age and the conception method (P > 0.05). Naturally conceived calves presented higher TP and IgG concentrations (P < 0.05), and lower concentrations of alpha 1-and alpha 2-globulins (P < 0.05), than that of those conceived by IVF. Age exerted greater influence on the serum parameters in the two groups. Serum concentrations of TP (P < 0.05), beta globulin (P < 0.05), gamma globulin (P < 0.001), IgG (P < 0.01), and globulins (P < 0.001), as well as serum activity of GGT (P < 0.0001) were high at 24 to 36 h after birth, and decreased with age. Albumin concentration, however, increased (P < 0.01) in the first weeks of life. The variation in alfa 2-globulin concentration was discrete (P < 0.05), and the serum concentration of alfa 1-globulin did not change (P > 0.05) with age. These patterns of variation related to age were observed in both groups with no apparent distinctions. Based on values obtained at 24 to 36 h after birth, it can be asserted that the passive transfer of immunity was successful in both groups, despite the differences in total protein and IgG concentrations. Discussion: The age-related variations in serum proteinogram components over the first 35 days of age may be considered physiological; and were consistent with previous studies ...

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“…O período neonatal é marcado por rápidas e intensas modificações do quadro hematológico, caracterizando-se ainda, por maior susceptibilidade às doenças [20][21][22]. Nesse contexto, a hematologia assume fundamental importância, especialmente nos diagnósticos e prognósticos das enfermidades [23].…”

Section: Introductionunclassified

Hemogram, Fibrinogen Concentration and Plasma Total Protein from Calves of Criollo Lageano Breed Variety Hornless and Aberdeen Angus Breed (Red Angus) on the First Six Months of Life

Schade

Rossi

Saito

et al. 2016

Acta Scientiae. Vet.

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Background: Neonatal period in bovine presents important variations in hematologic and immunologic parameters, and the resulting mortality rates may be due to increased susceptibility to disease. Race, age, environmental, climate and management factors are sources of CBC's parameters variation in cattle. The objective of this study is to evaluate and compare the CBC variables and concentrations of total protein (PTP) and plasma fibrinogen calves of Criolo Lageano Breed variety hornless and Aberdeen Angus (Red Angus) in the first six months of life, which are produced under extensive management at the Planalto Serrano Catarinense (southern Brazil). Materials, Methods & Results:Two groups were selected, comprising 11 calves of Hornless Criolo Lageano and 14 calves of the Aberdeen Angus breed (Red Angus). Blood samples were collected for complete blood count and determination of total protein concentrations, and plasma fibrinogen in the periods between 24 h and 36, 15, 30, 60, 90, 120, 150 and 180 days of life. The statistical analysis was performed using analysis of variance for repeated measures (ANOVA) and Tukey's test (P < 0.05). During the experimental period infestations by ticks in both races were observed. In the first month of life, blood smears revealed the presence of blood parasites of the genus Babesia spp. and Anaplasma sp. The fluctuations seen for erythrocyte in the neonatal period (30 days), although not significant, consisted of raising the number of values of erythrocytes, hemoglobin (Hb) and packed cell volume (PCV), and reduction in mean corpuscular volume values (MCV). From 90 days of age there was a significant reduction in number of red blood cells and VG values, and elevated MCV values and mean corpuscular volume (MCHC) for the Aberdeen Angus (Red Angus). For the WBC, the neonatal period was marked by increase in the number of lymphocytes and decrease in neutrophil ratio: lymphocyte (N, L) with respect to the inversion of 15 days. In the age group 90 days of life was evident increase in the number of leukocytes and lymphocytes in both races. The plasma fibrinogen concentrations showed no significant variations during the trial period. The plasma total protein (PTP), had higher values on the second day of life, with reductions up to 60 days and gradual increase in subsequent times. Discussion: The fluctuations related to the values of erythrocyte variables in the neonatal period are consistent with results reported by other authors in calves of other races. Changes in erythrocyte values observed from 90 days of age on race Aberdeen Angus (Red Angus) can be attributed to infection by blood parasites and consequent hemolysis. As for the leucocyte count, increasing the number of lymphocytes and inversion of N:L is the neonatal period in a physiological variation and confirms observations made by other authors in calves of other races. In the age group 90 days, leukocytosis by lymphocytosis was related to natural premonition against Babesia spp. and Anaplasma spp., which is documented in cattle i...

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Hemograma e proteínas do soro sanguíneo de bezerros Canchim-Nelore e da raça Holandesa nos primeiros 30 dias de vida

Cited by 8 publications

References 3 publications

Eritrograma de bezerras sadias, da raça Holandesa, no primeiro mês de vida

Eritrograma de bezerras sadias, da raça Holandesa, no primeiro mês de vida

Passive Transfer of Immunity and Serum Proteinogram during the First 35 Days of Age in Nelore Calves Conceived Naturally or Through In Vitro Fertilization

Hemogram, Fibrinogen Concentration and Plasma Total Protein from Calves of Criollo Lageano Breed Variety Hornless and Aberdeen Angus Breed (Red Angus) on the First Six Months of Life

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