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Effect of phosphorus deficiency on erythrocytic morphology and function in cows
Journal of Veterinary Science ; : 333-340, 2017.
Artículo en Inglés | WPRIM | ID: wpr-57414
ABSTRACT
The aim of this study was to evaluate the influence of phosphorus (P) deficiency on the morphological and functional characteristics of erythrocytes in cows. Forty Holstein-Friesian dairy cows in mid-lactation were randomly divided into two groups of 20 each and were fed either a low-P diet (0.03% P/kg dry matter [DM]) or a control diet (0.36% P/kg DM). Red blood cell (RBC) indices results showed RBC and mean corpuscular hemoglobin decreased while mean corpuscular volume increased significantly (p < 0.05) in P-deficient cows. Erythrocyte morphology showed erythrocyte destruction in P-deficient cows. Erythrocytes' functional characteristics results showed total bilirubin and indirect bilirubin concentrations and aspartate transaminase and alanine transaminase activity levels in the serum of P-deficient cows were significantly higher than those in control diet-fed cows. Activities of superoxide dismutase and glutathione peroxidase in erythrocytes were lower, while the malondialdehyde content was greater, in P-deficient cows than in control diet-fed cows. Na⁺/K⁺-ATPase and Mg²⁺-ATPase activities were lower in P-deficient cows than in control diet-fed cows; however, Ca²⁺-ATPase activity was not significantly different. The phospholipid composition of the erythrocyte membrane changed and membrane fluidity rigidified in P-deficient cows. The results indicate that P deficiency might impair erythrocyte integrity and functional characteristics in cows.
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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Fósforo / Aspartato Aminotransferasas / Superóxido Dismutasa / Bilirrubina / Dieta / Alanina Transaminasa / Índices de Eritrocitos / Membrana Eritrocítica / Eritrocitos / Glutatión Peroxidasa Idioma: Inglés Revista: Journal of Veterinary Science Año: 2017 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Fósforo / Aspartato Aminotransferasas / Superóxido Dismutasa / Bilirrubina / Dieta / Alanina Transaminasa / Índices de Eritrocitos / Membrana Eritrocítica / Eritrocitos / Glutatión Peroxidasa Idioma: Inglés Revista: Journal of Veterinary Science Año: 2017 Tipo del documento: Artículo