An evaluation of ultrasound and nuclear magnetic resonance spectroscopy to measure in vivo intramuscular fat content of longissimus muscle of pigs
| Autor: | G. Spincemaille, P. Van Hecke, Rony Geers, G Maes, S Perremans, G Rombouts, H Villé |
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| Rok vydání: | 1997 |
| Předmět: |
Magnetic Resonance Spectroscopy
Swine Biopsy Breeding Body weight Animal science In vivo Ultrasound method Genetics medicine Animals Muscle Skeletal Ultrasonography Longissimus muscle medicine.diagnostic_test Chemistry business.industry Ultrasound Body Weight General Medicine Nuclear magnetic resonance spectroscopy Anatomy Lipid Metabolism Lipids Evaluation Studies as Topic Body Composition Animal Science and Zoology Intramuscular fat business Food Science Gravitation |
| Zdroj: | Journal of animal science. 75(11) |
| ISSN: | 0021-8812 |
| Popis: | Intramuscular fat content (IMF) of longissimus muscle of pigs growing from approximately 20 to 100 kg was measured in vivo using biopsies after complete or localized anaesthesia, ultrasound and H-1 nuclear magnetic resonance (NMR) technology. Three lines of pigs, with 60 animals each, were available. Biopsies were taken from the same pigs at 20, 60, and 100 kg, and fat was extracted for gravimetric determination. At 20 kg, ultrasound images mere collected, and in vivo H-1 NMR spectroscopy was applied. A-mode ultrasound measurements were collected at 60 and 100 kg. The overall mean value of IMF was 1.60 +/- .56% at 20 kg, 1.53 +/- .50% at 60 kg, and 1.71 +/- .60% at 100 kg. Interactions between lines and body weight were observed. No statistically significant differences were found between methods at 20 kg. No significant correlations were found between the A-mode ultrasound measurements and the mean values of the gravimetric measurements. No visible pain or infections were observed in relation to the collection of a single biopsy. The ultrasound method in combination with image analysis is advantageous fi om the labor point of view and will also improve welfare of pigs in case of repeated sampling. However, further research is necessary to make the technology sufficiently reliable. A correlation between IMF and backfat thickness was not found. |
| Databáze: | OpenAIRE |
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