2006
DOI: 10.1111/j.1439-0396.2006.00641.x
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Effect of energy restriction and re‐alimentation in Belgian Blue double‐muscled beef cows on digestibility and metabolites

Abstract: Four groups of five non-lactating and non-pregnant Belgian Blue double-muscled (BBDM) cows were used to investigate the effect of energy level (E) on digestion, and blood and urine metabolites. The energy levels of the groups, applied indoors during a 140-day restriction period, were 100%, 90%, 80% or 70% of their energy requirements (E100, E90, E80, E70) respectively. Afterwards, animals grazed on the same swards for 203 days (re-alimentation period). Balance trials were conducted at the end of the restrictio… Show more

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Cited by 12 publications
(11 citation statements)
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“…It is noteworthy that there were no significant differences in serum glucose between the three groups of animals, since Tiffany & Spears (2005) reported plasma glucose to be lower in Angus steers fed barley-based diets than in those fed maize-based diets, which they attributed to the lower ruminal propionate levels of barley-fed steers limiting postabsorptive metabolism and gluconeogenesis. However, glucose metabolism depends on the endocrine actions of insulin and glucagon (Huntington 1997), which in turn depend on breed (Pareek et al 2007); the insensitivity of serum glucose to group in our study is in keeping with the results of a study of double-muscled Belgian Blue bulls in which serum glucose remained stable even after energy supply restriction (Fiems et al 2007).…”
Section: Serum Parameterssupporting
confidence: 90%
“…It is noteworthy that there were no significant differences in serum glucose between the three groups of animals, since Tiffany & Spears (2005) reported plasma glucose to be lower in Angus steers fed barley-based diets than in those fed maize-based diets, which they attributed to the lower ruminal propionate levels of barley-fed steers limiting postabsorptive metabolism and gluconeogenesis. However, glucose metabolism depends on the endocrine actions of insulin and glucagon (Huntington 1997), which in turn depend on breed (Pareek et al 2007); the insensitivity of serum glucose to group in our study is in keeping with the results of a study of double-muscled Belgian Blue bulls in which serum glucose remained stable even after energy supply restriction (Fiems et al 2007).…”
Section: Serum Parameterssupporting
confidence: 90%
“…Em trabalho sobre restrição e realimentação Fiems et al (2007), citando vários autores, comentaram que a restrição alimentar seguida por um período de realimentação pode modificar as concentrações plasmáticas de metabólitos em novilhos, novilhas, touros e vacas. Estes autores afirmaram que as concentrações de ácidos graxos não esterificados e uréia podem aumentar durante períodos de restrição alimentar ou fome.…”
Section: Perfil Hormonal E Parâmetros Sangüíneosunclassified
“…Trabalhando com restrição na ingestão de energia, Fiems et al (2007) constataram elevações nas concentrações plasmáticas de ácidos graxos não esterificados, nitrogênio ligado a aminoácidos e, também, provocou perda de N do corpo. As diferenças metabólicas observadas durante a restrição desapareceram no final do período de realimentação.…”
Section: Perfil Hormonal E Parâmetros Sangüíneosunclassified
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