Nutritional value of meat: the influence of nutrition and physical activity on vitamin B12 concentrations in ruminant tissues
| Autor: | Isabelle Ortigues-Marty, Sophie Prache, C. Girard, Dominique Dozias, Didier Micol |
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| Rok vydání: | 2005 |
| Předmět: |
Male
Embryology muscle 030309 nutrition & dietetics Medicine (miscellaneous) ruminant Ruminant Cyanocobalamin [SDV.BDD]Life Sciences [q-bio]/Development Biology media_common 2. Zero hunger 0303 health sciences biology vitamin B12 04 agricultural and veterinary sciences Vitamin B 12 nutrition Liver Animal Nutritional Physiological Phenomena Composition (visual arts) Reproduction Glycolysis Nutritive Value Oxidation-Reduction medicine.medical_specialty Meat Silage media_common.quotation_subject Physical exercise 03 medical and health sciences Animal science Physical Conditioning Animal Internal medicine medicine Animals Vitamin B12 Muscle Skeletal nutritional value Sheep 0402 animal and dairy science [SDV.BDLR]Life Sciences [q-bio]/Reproductive Biology biology.organism_classification Animal Feed 040201 dairy & animal science B vitamins Endocrinology Reproductive Medicine Cattle Animal Science and Zoology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition Developmental Biology Food Science |
| Zdroj: | Reproduction Nutrition Development Reproduction Nutrition Development, EDP Sciences, 2005, 45 (4), pp.453-467. ⟨10.1051/rnd:2005038⟩ |
| ISSN: | 1297-9708 0926-5287 |
| Popis: | International audience; An important nutritional characteristic of ruminant meat is its high content in vitamin B12. The variability of these contents is not known. Three studies were been set up in order to test the influence of the animal species (2 studies on Charolais steers slaughtered at 30-32 months of age, n = 24 and n = 30 and a third one on lambs slaughtered at 4.5 months of age, n = 21), of the nature of the diet (grass vs. maize silage, lucerne or concentrate diets) and of physical activity (without or with walking) on the vitamin B12 contents of different muscle types (rather oxidative (Rectus Abdominis, RA), intermediate (Longissimus Dorsi, LD), or glycolytic (Semi Tendinosus, ST)) and on the liver. The animals were supplemented in macro and trace minerals according to usual feeding practices in France in order to theoretically avoid any risk of deficiency. For this reason, cobalt allowances, which are necessary for the ruminal synthesis of vitamin B12, could differ among treatments. The results indicate the following: (1) cobalt allowances varied widely among treatments, from (sub-)deficient to plethoric allowances, influencing vitamin B12 contents of the liver, and muscles (only in case of deficiency), (2) the effects of dietary treatments or of physical exercise were essentially related to differences in cobalt allowances, (3) the oxidative type muscle (RA) showed contents which were double those in glycolytic type muscle (RA 10.8 vs. ST 5.0 ng*g-1) and (4) vitamin B12 contents of raw muscles were lower than the values indicated in tables of feed composition for humans for cooked meat (0.5 to 1 vs. 2 to 3 μg*100 g-1). |
| Databáze: | OpenAIRE |
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