التفاصيل البيبلوغرافية
| العنوان: |
Serum levels of ghrelin, growth hormone, and insulin during growth of cattle under tropical conditions |
| المؤلفون: |
Heredia, Fernando, Campos, Rómulo, Giraldo, Leonidas, García Malpartida, Katherinne |
| المصدر: |
Revista CES Medicina Veterinaria y Zootecnia, ISSN 1900-9607, Vol. 10, Nº. 1, 2015, pags. 45-56 |
| سنة النشر: |
2015 |
| المجموعة: |
Dialnet - Portada de revistas (Universidad de La Rioja) |
| مصطلحات موضوعية: |
Cattle, gastrointestinal hormones, growth, rumen development, Bovinos, crecimiento, desarrollo del rumen, hormonas gastrointestinales, crescimento, desenvolvimento do rumem, hormônios gastrointestinais |
| الوصف: |
From a physiological and animal production standpoint, it is important to know the factors associated with growth and development of the rumen. Calf transition from monogastric into ruminant involves structural and physiological changes of the digestive system. This process involves hormones that affect both the orexigenic (ghrelin) and metabolic phases, and also nutrient utilization (i.e., insulin and growth hormone). The aim of this study was to monitor growth of calves between birth and six months of age and determine serum ghrelin, growth hormone, and insulin, in three breeds. Eight animals were selected from each breed (Harton del Valle, Holstein, and Brahman). Body weight was measured and blood samples collected every 30 days. Protein was analyzed by direct refractometry, insulin and ghrelin by radioimmunoassay (RIA), glucose by enzymatic colorimetry, and growth hormone (HG) by ELISA. A factorial design with two main effects (animal breed and sampling age) was used, blocking by weight groups. Analysis of variance showed differences (p<0.05) for main effects. The observed mean values were: 529 g/ day weight gain, 55.6 g/L protein, 4.99 mmol/L glucose, 297.69 pmol/L insulin, 59.11 pmol/L ghrelin, and 12,87 ug/L HG. Differences were observed for hormone values and indicators by age of calves at the time of sampling. ; O conhecimento dos fatores associados ao crescimento e ao desenvolvimento do rumem é importante tanto desde o ponto de vista fisiológico quanto da produção animal. A mudança dos vitelos de monogástrico para ruminante implica mudanças estruturais e fisiológicas no sistema digestivo. No processo intervém hormônios que incidem nas fases orexigénica (ghrelina), metabólica e de utilização de nutrientes por parte do organismo (insulina e hormônio do crescimento). O objetivo do presente trabalho foi monitorar o crescimento entre o nascimento e os seis meses de idade de vitelos e assim determinar as concentrações séricas de ghrelina, hormônio do crescimento e insulina, em três grupos raciais de ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
https://dialnet.unirioja.es/servlet/oaiart?codigo=5450722Test; (Revista) ISSN 1900-9607 |
| الإتاحة: |
https://dialnet.unirioja.es/servlet/oaiart?codigo=5450722Test |
| حقوق: |
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| رقم الانضمام: |
edsbas.E7F5A11A |
| قاعدة البيانات: |
BASE |
