Comparison of hindquarter metabolite uptakes in Belgian Blue double-muscled bulls at maintenance or during fattening.

Hornick, Jean-Luc; Eenaeme, Christian Van; Diez, Marianne; Minet, Vincent; Istasse, Louis

doi:10.2527/1997.75123331x

Cited by 4 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, apparently, intracellular recycling of amino acids into muscle protein was much more efficient in L4 and L8. This intracellular recycling of amino acids during compensatory growth has been demonstrated by hindquarter arteriovenous difference measurements with similar animals (Hornick et al 1997).…”

Section: Discussion N Balancementioning

confidence: 57%

Nitrogen balance and myofibrillar protein turnover in double muscled Belgian Blue bulls in relation to compensatory growth after different periods of restricted feeding

Eenaeme¹,

Evrard²,

Hornick³

et al. 1998

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Nitrogen balance and myofibrillar protein breakdown were studied in 16 double-muscled Belgian Blue bulls during a low growth period (0.5 kg d−1) (LGP) of 4 mo (L4), 8 mo (L8), or 14 mo (L14) and the subsequent fattening period (rapid growth period, RGP). The control group (CG) was given a conventional fattening diet; the others received a low-energy, low-protein diet during LGP, and the same diet as the CG during RGP. Measurements were made halfway through the LGP, l mo after the beginning of the fattening period, and 1 mo before slaughter. Nitrogen balance was about half of CG (P < 0.001) during LGP, e.g., 50.8, 21.3, 25.8, and 23.8 g d−1, for CG, L4, L8, and L14, respectively. Between LGP and RGP, N balance increased by about 18 g N d−1 above the control in the compensating groups L4, L8 and L14. This was due to the higher digestibility and the higher metabolizability of the nitrogen in the fattening diet. Lower muscle protein accretion during the LGP resulted from decreased synthesis (P < 0.001) and degradation (P < 0.05) compared with the GC. When changing to RGP different evolution patterns were observed in the three formerly restricted groups, e.g. after a short restriction (L4) both synthesis and degradation rose during the RGP but declined towards the end. After a longer restriction (L8 and L14), synthesis and degradation increased and remained high. The magnitude of these increases was inversely proportional to the length of the restriction period. Key words: Belgian Blue bulls, compensatory growth, nitrogen balance, muscle, muscle protein breakdown

show abstract

Section: Discussion N Balancementioning

confidence: 57%

Nitrogen balance and myofibrillar protein turnover in double muscled Belgian Blue bulls in relation to compensatory growth after different periods of restricted feeding

Eenaeme¹,

Evrard²,

Hornick³

et al. 1998

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

Mechanisms of reduced and compensatory growth

Hornick

Eenaeme

Gerard

et al. 2000

Domestic Animal Endocrinology

385

321

View full text Add to dashboard Cite

Effects of age on plasma metabolites and hormones in finishing Belgian Blue double-muscled cull females

et al. 2004

View full text Add to dashboard Cite

Two groups of 12 Belgian Blue double-muscled cull females were used successively in a 2-year repeated experiment and divided into three groups according to age, allowing four animals per group each year. The aim of the trial was to relate, during the finishing period, the metabolic and endocrine parameters with age. Females were fattened with a diet based on maize silage and were blood sampled on several occasions. The average daily gain (ADG) decreased with the age of the cows. Plasma glucose and triglycerides decreased also with age while the youngest females showed lower concentrations of urea than those older. The composition of plasma non-esterified fatty acids also differed considerably between groups. The hormones that best related with ADG were IGF-1 and insulin. Plasma concentrations of thyroid hormones were lower in the oldest animals. No difference between groups was found for GH. Heifers presented lower concentrations of GH and IGF-1 than those reported elsewhere in fattening bulls of the same breed. It may be concluded that in Belgian Blue double-muscled females, glucose, IGF-1 and insulin are good indicators of the growth potential. Young adult cows presented intermediate characteristics of metabolic and endocrine status that were close either to younger or to older cows.

show abstract

Comparison of hindquarter metabolite uptakes in Belgian Blue double-muscled bulls at maintenance or during fattening.

Cited by 4 publications

References 23 publications

Nitrogen balance and myofibrillar protein turnover in double muscled Belgian Blue bulls in relation to compensatory growth after different periods of restricted feeding

Nitrogen balance and myofibrillar protein turnover in double muscled Belgian Blue bulls in relation to compensatory growth after different periods of restricted feeding

Mechanisms of reduced and compensatory growth

Effects of age on plasma metabolites and hormones in finishing Belgian Blue double-muscled cull females

Contact Info

Product

Resources

About