Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves

Variations of plasmatic levels of aldosterone. Na+, K+ and Cl- were registered during the growth (2nd to 6th month) of nursing and early weaned calves, Some reports suggest that small growing rate of calves submitted to early weaning would be due to the stress of mother-breeding separation at 2 mont...

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Autor principal: Coppo, José A.
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Exactas y Naturales y Agrimensura 2001
Materias:
Aldosterone
Electrolytes
Calf
Growing
Weaning
Stress
Aldosterona
Electrolitos
Ternero
Crecimiento
Destete
Estrés
Acceso en línea:https://revistas.unne.edu.ar/index.php/fce/article/view/7369
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-7369
record_format ojs
spelling I48-R154-article-73692024-11-07T12:55:42Z Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves Coppo, José A. Aldosterone Electrolytes Calf Growing Weaning Stress Aldosterona Electrolitos Ternero Crecimiento Destete Estrés Variations of plasmatic levels of aldosterone. Na+, K+ and Cl- were registered during the growth (2nd to 6th month) of nursing and early weaned calves, Some reports suggest that small growing rate of calves submitted to early weaning would be due to the stress of mother-breeding separation at 2 months post-partum. Sixty out of 120 suckling half-bred zebú calves (2 months old) were weaned at day 0 receiving a commercial balanced diet, while the remainder continued suckling. Blood samples were taken at 0, 7, 14, 21, 28, 60, 90 and 120 days for laboratory determinations performed by conventional methods. Analysis of the variance for repeated measures demonstrated that differences were not significant for the treatment effect (suckling versus weaned) in any of the studied parameters, The time effect (growth) was significant (p < 0.05) for the decline of aldosterone and Na+ in both lots and was attributed to ontogenic reasons. Such results turn improbable stress occurrence. Confidence intervals for this race and age (2nd and 6th month respectively) were of 346- 352 and 286-292 pg/ml for aldosterone, 141-144 and 140-143 mmol/l for Na+ 4.4-4.6 and 4.4-4.7 mmol/l for K+, as well as 94-98 and 95-98 mmol/l for Cl -. Efectos del crecimiento y destete sobre los niveles plasmáticos de aldosterona. Na+. K+ y Cl- en terneros cruza cebú.Se estudian las variaciones de aldosterona. Na+, K+ y Cl- registradas durante el crecimiento (2° a 6° mes) de terneros índicos en lactación y destetados precozmente. Algunos reportes sugieren que la menor velocidad de crecimiento de los terneros sometidos a destete precoz se debería al estrés que implica la separación madre-cría a los 2 meses post-parto. Sesenta terneros lactantes cruza cebú de 2 meses de edad fueron destetados (día 0), suplementándose su alimentación con un balanceado comercial. Otros 60 continuaron su amamantamiento al pie de madre. En ambos grupos, las determinaciones de laboratorio se efectuaron a partir de muestras de sangre extraídas a los 0, 7. 14. 21, 28, 60, 90 y 120 días. El análisis de la variancia para medidas repetidas demostró que las diferencias no fueron significativas para el efecto tratamiento (lactantes versus destetados) en ninguno de los parámetros estudiados. El efecto tiempo (crecimiento) fue significativo (p < 0.05) para las declinaciones de aldosterona y sodio, que ocurrieron en ambos lotes y se atribuyen a razones ontogénicas. Tales resultados toman improbable la ocurrencia de estrés. Los intervalos de confianza para esta raza y edad (2° y 6° mes respectivamente) fueron de 346-352 y 286-292 pg/ml para aldosterona, 141-144 y 140-143 mmol/l para Na+, 4.4-4,6 y 4,4-4,7 mmol/l para K+, así como 94-98 y 95-98 mmol/l para C1-. Facultad de Ciencias Exactas y Naturales y Agrimensura 2001-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/fce/article/view/7369 10.30972/fac.1717369 FACENA; Vol. 17 Núm. 1 (2001); 47-56 1851-507X 0325-4216 spa https://revistas.unne.edu.ar/index.php/fce/article/view/7369/7373
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Aldosterone
Electrolytes
Calf
Growing
Weaning
Stress
Aldosterona
Electrolitos
Ternero
Crecimiento
Destete
Estrés
spellingShingle Aldosterone
Electrolytes
Calf
Growing
Weaning
Stress
Aldosterona
Electrolitos
Ternero
Crecimiento
Destete
Estrés
Coppo, José A.
Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
topic_facet Aldosterone
Electrolytes
Calf
Growing
Weaning
Stress
Aldosterona
Electrolitos
Ternero
Crecimiento
Destete
Estrés
author Coppo, José A.
author_facet Coppo, José A.
author_sort Coppo, José A.
title Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
title_short Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
title_full Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
title_fullStr Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
title_full_unstemmed Effects of growing and weanning on plasmatic levels of aldosterone, Na+, Ka+ and Cl- in half-bred zebu calves
title_sort effects of growing and weanning on plasmatic levels of aldosterone, na+, ka+ and cl- in half-bred zebu calves
description Variations of plasmatic levels of aldosterone. Na+, K+ and Cl- were registered during the growth (2nd to 6th month) of nursing and early weaned calves, Some reports suggest that small growing rate of calves submitted to early weaning would be due to the stress of mother-breeding separation at 2 months post-partum. Sixty out of 120 suckling half-bred zebú calves (2 months old) were weaned at day 0 receiving a commercial balanced diet, while the remainder continued suckling. Blood samples were taken at 0, 7, 14, 21, 28, 60, 90 and 120 days for laboratory determinations performed by conventional methods. Analysis of the variance for repeated measures demonstrated that differences were not significant for the treatment effect (suckling versus weaned) in any of the studied parameters, The time effect (growth) was significant (p < 0.05) for the decline of aldosterone and Na+ in both lots and was attributed to ontogenic reasons. Such results turn improbable stress occurrence. Confidence intervals for this race and age (2nd and 6th month respectively) were of 346- 352 and 286-292 pg/ml for aldosterone, 141-144 and 140-143 mmol/l for Na+ 4.4-4.6 and 4.4-4.7 mmol/l for K+, as well as 94-98 and 95-98 mmol/l for Cl -.
publisher Facultad de Ciencias Exactas y Naturales y Agrimensura
publishDate 2001
url https://revistas.unne.edu.ar/index.php/fce/article/view/7369
work_keys_str_mv AT coppojosea effectsofgrowingandweanningonplasmaticlevelsofaldosteronenakaandclinhalfbredzebucalves
first_indexed 2025-05-17T05:10:16Z
last_indexed 2025-05-17T05:10:16Z
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