Search results for "Animal production studies"
showing 10 items of 13 documents
A morphological and mitochondrial assessment of Apis mellifera from Palermo, Italy
1998
A characterization of the honey bees from western Sicily (Palermo, Italy) is presented. Mor- phological comparisons to A. m. ligustica were made using data taken from honey bee populations from southeastern (Bari) and central (Emilia Romagna) Italy. The honey bees of the Palermo area have distinct morphological differences compared to the mainland honey bees. The mtDNA haplotype common in subspecies within the African lineage of A. mellifera predominated in the Sicilian honey bee samples (13 out of 16). These results suggest both the potential and the desirability to expend efforts to conserve A. m. sicula. © Inra/DIB/AGIB/Elsevier, Paris
Jugement de la couleur des carcasses en abattoir. Eléments d’objectivation de la notation experte de la couleur des viandes de gros bovins Charolais
2016
Evaluation of carcass color at the slaughterhouse Expert notation is the reference method for the evaluation of bovine meat color, notably for quality. A total of 140 Charolais carcasses were scored at the slaughterhouse on a color scale going from 1 (too light) to 5 (too dark). These expert scores were compared to three types of instrumental data (L*a*b / RVB referential; image shooting with image processing / chromameter). Amongst the instrumental measurements, the values obtained after image processing of the whole muscle seems to be better associated with the scores obtained for color by experts than the scores obtained with the chromameter for which the zone of the muscle analyzed is m…
Effects of mountain grassland maturity stage and grazing management on carotenoids in sward and cow's milk
2006
Carotenoids are involved in the sensorial and nutritional values of dairy products. In grazing systems, both herbage maturity stage and grazing management may affect the amount of carotenoid ingested, thus these factors may affect carotenoid concentrations in milk. Two homogenous plots of mountain grassland (1.4 and 2.0 ha) were grazed during two cycles of growth by 6 dairy cows in mid lactation, in strip (SG) and rotational grazing (RG), respectively. We monitored the changes in carotenoid concentrations in sward and milk, measured by HPLC twice a week. Seven carotenoids were identified in the sward: violaxanthin, antheraxanthin, epilutein, lutein, zeaxanthin, ß-carotene and 13-cis ß-carot…
Conjugated linolenic acid (CLna), conjugated linoleic acid (CLA), and other biohydrogenation intermediates in plasma and milk fat of cows fed raw or …
2007
International audience; Thirty lactating dairy cows were used in a 333 Latin-square design to investigate the effects of a raw or extruded blend of linseed and wheat bran (70:30) on plasma and milk fatty-acids (FA). Linseed diets, containing 16.6% linseed blend on a dry-matter basis, decreased milk yield and protein percentage. They decreased the proportions of FA with less than 18 carbons in plasma and milk and resulted in cis -9, cis -12, cis -15 18:3 proportions that were more than three and four times higher in plasma and milk, respectively, whereas cis -9, cis -12 18:2 proportions were decreased by 10–15%. The cis -9, trans -11, cis -15 18:3 isomer of conjugated linolenic acid was not …
In vivo oxydation of [9-14C] cyclic fatty acids derived from linoleic acid in the rat
2006
International audience; Abstract - Heating oils and fats may lead to cyclization of polyunsaturated fatty acids, as for example linolenic acid. Cyclohexenyl and cyclopentenyl fatty acids are subsequently present in some edible oils and these are suspected to induce metabolic disorders. In a previous experiment using [1-14C] labeled molecules, we published that these cyclic fatty acids are beta oxidized to the same extent as linolenic acid, at least for the first cycle of beta oxidation. However, it is possible that the presence of a ring could alter the ability of the organism to fully oxidize the molecule. In order to test this hypothesis, we assessed the oxidative metabolism of cyclic fat…
Number of intramuscular adipocytes and fatty acid binding protein-4 content are significant indicators of intramuscular fat level in crossbred Large …
2006
International audience
Orientation response of newborn rabbits to odours of lacting females : relative effectiveness of surface and milk cues
2001
International audience
Quel est l’impact des pratiques d’épandage des effluents d’élevages mixtes « Porcin-Bovin » en zone herbagère du Massif Central sur la microbiologie …
2021
National audience; L’élevage porcin du Massif Central concerne 1 000 éleveurs répartis sur le territoire. Le maintien ou le renouvellement des ateliersest de moins en moins assuré pour des raisons sociales, économique et, environnementales. Dans le Massif Central, l’élevage porcinest souvent associé à l’élevage bovin. Les effluents porcins issus de ces systèmes mixtes peuvent être un réel atout pour la fertilisationorganique des prairies, étant elles-mêmes en retour une ressource alimentaire essentielle pour l’élevage bovin. Cependant, l’impactdu retour au sol des effluents d’élevage issus de ces systèmes mixtes sur la qualité biologique des sols est actuellement peu ou pasétudié. La présen…
Comment les éleveurs des exploitations mixtes “Porcins – Bovins” du Massif Central gèrent-ils leurs effluents porcins ?
2021
National audience
Améliorer la valorisation des effluents d’élevage porcin dans un environnement herbager à forte biodiversité
2021
Impact des pratiques de gestion des effluents d’élevage sur la qualité microbiologique des sols (Sophie Bourgeteau)Gestion des effluents dans les exploitations mixtes « Porcin – Bovin » (Sylvie Mugnier)