Perfil metabólico de vacas Jersey clinicamente saudáveis

Alvarenga, Paula Batista de; Rezende, Amanda Lima; Justo, Felipe Benedetti; Rezende, Soraia Rage; Cesar, João; Santos, Ricarda Maria dos; Mundim, Antônio Vicente; Saut, João Paulo Elsen

doi:10.1590/s0100-736x2017000200015

Cited by 5 publications

(4 citation statements)

References 20 publications

(29 reference statements)

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“…Em estudo recente quanto ao perfil metabólico de vacas Jersey, a hipocalcemia subclínica foi frequente, ocorrendo em 57,1% dos animais no pré-parto e 76,2% no pós-parto. Tem sido atribuída à raça Jersey maior tendência para a hipocalcemia relacionada com menor absorção intestinal, porém, segundo os autores, a hipocalcemia observada teria relação com os valores de albumina que permaneceram próximos ao limite mínimo de referência no período (23) . Não foram encontrados estudos semelhantes com animais Jersolando, e o presente estudo sugere maior adaptação da raça ao manejo adotado nas propriedades de agricultura familiar.…”

Section: Resultsunclassified

Hipocalcemia Em Vacas Leiteiras Da Agricultura Familiar

et al. 2019

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Resumo O objetivo deste trabalho foi avaliar a ocorrência de hipocalcemia associada ou não a hipomagnesemia em vacas leiteiras de propriedades de agricultura familiar. Foram avaliadas 22 vacas das raças Jersey, Holandesa e Jersolando, no período de transição, oriundas de pequenas propriedades de agricultura familiar, com produção média 12L/leite/dia. A concentração do cálcio total e do magnésio séricos foi determinada por metodologia colorimétrica e cálculo do cálcio ionizado estimado a partir das concentrações séricas do cálcio total, de proteína e albumina. Foi observada hipocalcemia em 50% dos animais no pré-parto (8,2±1,4mg/dL) e 63,6% no pós-parto (7,7±1,7 mg/dL). A redução do cálcio ionizado foi menos frequente, com grande parte dos animais apresentando cálcio ionizado estimado dentro da normalidade, com média de 4,6±0,83 mg/dL no pré-parto e 4,3±1,0 mg/dL no pós-parto. Todos os animais apresentaram concentrações de magnésio sérico dentro da normalidade, descartando-se hipomagnesemia. A concentração média de magnésio no pré-parto foi 2,4±0,3 mg/dL com elevação significativa (p<0,05) no pós-parto para 2,7±0,5 mg/dL. Conclui-se que as vacas leiteiras da agricultura familiar são susceptíveis à ocorrência de hipocalcemia e a ausência de sinais clínicos pode estar relacionada à manutenção da concentração de cálcio ionizado próxima da normalidade associada à ausência de hipomagnesemia.

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Section: Resultsunclassified

Hipocalcemia Em Vacas Leiteiras Da Agricultura Familiar

et al. 2019

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“…However, these clinical conditions would also correspond with similarly low TPP and PCV levels, which we did not observe. Peripartum cows raised under Brazilian conditions tend to have low ALB levels (ALVARENGA et al, 2017;BIRGEL JUNIOR et al, 2003) that are lower than the international reference values (FÜRLL, 2005;SMITH, 2009), which led Alvarenga et al (2017) to advocate the use of lower national reference values, at least in this stage. It should, however, be noted that we detected no significant differences in ALB when comparing the MIP and SIP groups.…”

Section: Discussionmentioning

confidence: 99%

The glutaraldehyde test and its use in dairy cattle

Bernarski

Silva

Nascimento

et al. 2019

SCA

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During a physical examination of cattle, it is often difficult to evaluate inflammatory processes, particularly in cases where the inflammation occurs in deeper regions. The glutaraldehyde test (GT), carried out using a sample of whole blood, allows the visual and semiquantitative identification of an inflammatory process in cattle. Considering that there are few biochemical tests that can be used in the field, the objective of this study was to verify the efficacy of the GT in detecting and predicting mild and severe inflammatory processes in bovine species, classified according to a physical examination, and in the presence of different diseases or lesions. The GT was used in conjunction with a physical examination in 176 cows over 12 months of age, with additional laboratory evaluations of packed cell volume, total protein, albumin, globulin, and fibrinogen. Using a cutoff point at 3 minutes of coagulation, the GT showed a sensitivity of 35.1%, specificity of 94.1%, positive predictive value of 74.1%, and negative predictive value of 75.2%. The GT correctly detected the most severe inflammatory processes under the field conditions of this study. The GT is a diagnostic aid that can be used as a fast and simple screening test during the physical examination of cattle.

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“…Despite the successful use of metabolic profiling in beef and milk cattle (Peixoto et al, 2006, Wittwer, 2000, Alvarenga et al, 2017, information regarding metabolic profiles in sheep is scarce. Therefore, the aim of this study was to evaluate the effect of grazing methods and intensities during grazing period on the metabolic profile of lambs grazing ryegrass (Lolium multiflorum Lam) under different intensities and grazing methods.…”

Section: Introductionmentioning

confidence: 99%

Metabolic profile of female lambs on annual ryegrass pasture managed under different grazing intensities and methods

Macari

Carvalho

González

et al. 2020

Arq. Bras. Med. Vet. Zootec.

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The aim of this study was to evaluate the effect of grazing methods and intensities on the metabolic profile of lambs grazing ryegrass. This study was performed in Eldorado do Sul (RS). The treatments consisted of two grazing intensities with rotational and continuous stocking methods: moderate and low. The experimental design was a randomized block arranged in a factorial scheme with four replicates. To evaluate the metabolic and nutritional conditions of the lambs, blood samples were collected to evaluate phosphorus, albumin, glucose, magnesium, globulin, cortisol, urea and total proteins. The highest blood urea value was observed in the month of September in lambs kept in continuous method grazing. There was no statistical difference between the grazing intensities and grazing methods for albumin, glucose, magnesium, globulin, cortisol and total protein levels in profile lambs. The cortisol values suggested that the animals were not subjected to high stress levels. In conclusion, rearing female lambs on ryegrass, irrespective of grazing methods or intensities, allowed the maintenance of body homeostasis and did not cause any metabolic unbalances, nutritional unbalances or stress.

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Perfil metabólico de vacas Jersey clinicamente saudáveis

Cited by 5 publications

References 20 publications

Hipocalcemia Em Vacas Leiteiras Da Agricultura Familiar

Hipocalcemia Em Vacas Leiteiras Da Agricultura Familiar

The glutaraldehyde test and its use in dairy cattle

Metabolic profile of female lambs on annual ryegrass pasture managed under different grazing intensities and methods

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