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Variation of plasma parameters and nitrogen metabolism in finishing Belgian Blue double‐muscled cull females
Author(s) -
Cabaraux J.F.,
Dufrasne I.,
Istasse L.,
Hornick J.L.
Publication year - 2005
Publication title -
journal of animal physiology and animal nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.651
H-Index - 56
eISSN - 1439-0396
pISSN - 0931-2439
DOI - 10.1111/j.1439-0396.2004.00512.x
Subject(s) - endocrinology , dry matter , medicine , metabolism , polyunsaturated fatty acid , chemistry , insulin , hormone , zoology , biology , fatty acid , biochemistry
Summary The changes over time in plasma parameters and nitrogen metabolism were studied in finishing Belgian Blue double‐muscled females offered a maize silage based diet. When compared with literature data, plasma glucose along with triglycerides concentrations was low while non‐esterified fatty acids were high and rich in polyunsaturated forms. The concentrations in thyroid hormones, insulin‐like growth factor 1 and insulin were also low and plasma insulin decreased with time. Growth hormone concentration, by contrast, increased with time. On average, the females retained 44 g nitrogen per day from an intake of 210 g but the efficiency of retention decreased with time. The fractional rates of accretion and synthesis of muscle protein were also affected by time. The dry matter content in muscle biopsies was close to 22% and increased with the finishing, as did the diameter of the tailhead adipocytes.