Coping with citizen demands: a field study of suckling processes in dairy herds

In dairy farms calves and cows are usually separated shortly after birth but this practice raises the question of animal welfare. This social concern may lead to bring back dairy calves to their mother. Even though suckling is quite seldom in dairy production, some farmers are using such a practice for many years. The present study aims to better know farmer’s motivations, practical implementation and farmer’s perception of the impact of suckling on performance and animal behaviour. In January 2018 a semi-quantitative survey was performed on 44 farms where calves suckle at least 24 hours their mother or a nurse cow. The farming systems differed on the size (20 to 140 cows), the type (19 conventional, 25 organic farms), the suckling (28 by the mothers, 16 by nurses), and the breed. Results indicate that main farmers’ motivations are calves’ health (52%), better working conditions (41%) and saving time (34%), with little consideration on animal welfare (7%). Numerous practices were found in terms of allowance of daily cow-calf contact and suckling duration with a difference between male and female calves. According to farmers, these practices were efficient to improved calves’ health (70%), save time (75%) and improved working conditions (52%). Weaning was considered as a stressful situation, especially after long suckling periods. Cow mooing usually stopped 2.5 d after weaning. At least 34 farmers are fully satisfied with this practice. The main challenge appears to be the management of the wildness of future heifers, by investing time to manipulate calves before weaning. The results of this survey could help to propose solutions to farmers who want to cope with the societal demand of keeping calves with dams in dairy herds

Déléguer l'allaitement des veaux laitiers aux vaches ? Résultats d'enquêtes auprès des éleveurs

La séparation précoce mère-veau est une pratique courante dans la plupart des élevages laitiers, mais est sujette à de nombreuses interrogations tant chez les éleveurs (coûts engendrés, travail) que dans la société (bien-être animal). Des pratiques alternatives mises en place par certains éleveurs permettent aux veaux d'être allaités par leur mère ou une autre vache, appelée « nourrice ». Quoiqu’anciennes, ces pratiques demeurent peu connues et leur intégration aux conditions d’élevages modernes questionne. Des enquêtes ont ainsi été réalisées en 2018 pour connaître la motivation des éleveurs, la diversité et les conséquences de ces pratiques sur les résultats techniques. Cent deux élevages, identifiés par des réseaux divers (conseil en élevage, chambres d’agriculture, coopératives…), ont été enquêtés dans le Grand Ouest (n = 50), le Grand Est (n = 41) et le Massif central (n = 11), par téléphone (n = 56) ou sur place (n = 46). La taille médiane des troupeaux est de 60 vaches laitières (8 à 210), principalement constitués de vaches de race Montbéliarde et Holstein. Les élevages sont pour moitié en agriculture biologique (56%), avec une grande diversité de systèmes de traite et de logement (salle de traite en épi, robot, stabulation entravée, libre à logettes…). Trois grandes conduites d'allaitement des veaux, de la naissance à la vente ou au sevrage, ont été identifiées : 1/ les veaux sont allaités exclusivement par leur mère ; 2/ les veaux sont élevés par leur mère puis reçoivent une alimentation lactée artificielle (poudre ou lait entier) ; 3/ les veaux sont élevés par leur mère puis sous une vache nourrice. Elles diffèrent souvent au sein d’un même élevage (n = 62) entre les veaux destinés à la vente (mâles ou femelles) et les velles de renouvellement. La diversité des systèmes d'allaitement se retrouve dans tous les types d'élevages, quelle que soit leur taille ou leur localisation géographique. L'amélioration de la santé des animaux (n = 52), la diminution du temps de travail (n = 47) et des coûts d’élevage (n = 32) sont les principales motivations des éleveurs à mettre en place ces pratiques. Pour 80% d’entre eux, ces pratiques alternatives ont entrainé une diminution de la fréquence des diarrhées des veaux et une amélioration de leur croissance. La séparation tardive vache-veau demeure le point négatif de ces pratiques, avec des périodes de meuglements de 2,4 jours en moyenne. Certains éleveurs, ayant utilisé puis abandonné ces pratiques, pointent aussi d’autres limites (problèmes sanitaires, bâtiments inadaptés). Cette enquête, qui a permis de mieux connaître les pratiques d'allaitement des veaux laitiers par leur mère et sous nourrice, va être complétée par des enquêtes similaires et des expérimentations en fermes, au niveau européen, afin d’avoir une vision plus large de ces pratiques et de leurs impacts

Market Work and the Formation of the Omnivorous Consumer Subject

Omnivorousness is the tendency of culturally and economically privileged individuals to consume both highbrow and lowbrow products. Prior research explores omnivorousness as a manifestation of status distinction in which consumers deploy the aesthetic disposition—a generic and transposable ability to appreciate cultural products through a formal gaze—to lowbrow options. Existing work emphasizes the acquisition of the aesthetic disposition, but it does not explain how consumers transpose their generic disposition to specific cultural contexts and develop omnivorous tastes. Therefore, we study the formation of omnivorous consumer subjects and highlight its enabling conditions. Building on a 7-year ethnography of coffee consumption in France, we find that omnivorous subjects develop a dual and flexible cultural competence. First, they acquire a common appreciation of coffee during their primary socialization and enjoy the energizing and socializing functions of lowbrow coffee. Then, they develop a formal appreciation of coffee later in life as a result of market work conducted by market professionals. Specifically, market professionals do three types of market work: qualification, captation, and activation. Consumers respond to market work by transposing their aesthetic disposition to highbrow coffee and, therefore, enjoy its formal characteristics. We extend prior research on taste, omnivorousness, and consumer subject formation

Market Work and the Formation of the Omnivorous Consumer Subject

Omnivorousness is the tendency of culturally and economically privileged individuals to consume both highbrow and lowbrow products. Prior research explores omnivorousness as a manifestation of status distinction in which consumers deploy the aesthetic disposition—a generic and transposable ability to appreciate cultural products through a formal gaze—to lowbrow options. Existing work emphasizes the acquisition of the aesthetic disposition, but it does not explain how consumers transpose their generic disposition to specific cultural contexts and develop omnivorous tastes. Therefore, we study the formation of omnivorous consumer subjects and highlight its enabling conditions. Building on a 7-year ethnography of coffee consumption in France, we find that omnivorous subjects develop a dual and flexible cultural competence. First, they acquire a common appreciation of coffee during their primary socialization and enjoy the energizing and socializing functions of lowbrow coffee. Then, they develop a formal appreciation of coffee later in life as a result of market work conducted by market professionals. Specifically, market professionals do three types of market work: qualification, captation, and activation. Consumers respond to market work by transposing their aesthetic disposition to highbrow coffee and, therefore, enjoy its formal characteristics. We extend prior research on taste, omnivorousness, and consumer subject formation

CRP1, a LIM domain protein implicated in muscle differentiation, interacts with α-actinin

Journal ArticleMembers of the cysteine-rich protein (CRP) family are LIM domain proteins that have been implicated in muscle differentiation. One strategy for defining the mechanism by which CRPs potentiate myogenesis is to characterize the repertoire of CRP binding partners

Cytoskeleton-associated PDZ-LIM protein, ALP, acts on serum response factor activity to regulate muscle differentiation

Journal ArticleIn this report, an antisense RNA strategy has allowed us to show that disruption of ALP expression affects the expression of the muscle transcription factors myogenin and MyoD, resulting in the inhibition of muscle differentiation. Introduction of a MyoD expression construct into ALP-antisense cells is sufficient to restore the capacity of the cells to differentiate, illustrating that ALP function occurs upstream of MyoD

Purification and characterization of an α-actinin-binding PDZ-LIM protein that is up-regulated during muscle differentiation

Journal Articleα-Actinin is required for the organization and function of the contractile machinery of muscle. In order to understand more precisely the molecular mechanisms by which α-actinin might contribute to the formation and maintenance of the contractile apparatus within muscle cells, we performed a screen to identify novel α-actinin binding partners present in chicken smooth muscle cells. In this paper, we report the identification, purification, and characterization of a 36-kDa smooth muscle protein (p36) that interacts with α-actinin

LA-ICPMS Ba/Ca analyses of planktic foraminifera from the Bay of Bengal:Implications for late Pleistocene orbital control on monsoon freshwater flux

Indian Summer Monsoon (ISM) indices are characterized by large secular variation during both glacials and interglacials. Although much information about palaeomonsoon intensity is derived from such indicies, current data sets do not relate simply to precipitation. In order to directly constrain the variability of ISM freshwater flux to the Bay of Bengal, we report Ba/Ca LA-ICPMS data of the surface-dwelling foraminifera Globigerinoides ruber from core RC12–343 (central Bay of Bengal) between 68 and 47 ka. Planktic foraminifera Ba/Ca directly relates to seawater Ba/Ca, in turn principally controlled by freshwater flux. Our foraminifera-derived urn:x-wiley:15252027:media:ggge20787:ggge20787-math-0001 record for the central Bay of Bengal is highly coherent with that derived from urn:x-wiley:15252027:media:ggge20787:ggge20787-math-0002O measurements of the same material, implying that these reconstructions are not significantly biased by potential shifts in urn:x-wiley:15252027:media:ggge20787:ggge20787-math-0003. Validating this method allows us to produce a freshwater stack for the last 80 ka for the Bay of Bengal, enabling the orbital controls on ISM precipitation to be examined for the first time. The highest freshwater flux in the last 80 ka was ∼3X larger than present and occurred during the early-mid Holocene. We show that the orbital timing of this record is best explained by a combination of factors with a weighting of ∼45% given to the 30°N-equator mean summer insolation gradient and ∼55% given to the variability of May–July insolation at the equator and June–July insolation at 30°N. These processes are consistent with current mechanistic understanding of ISM forcings and demonstrate a dominant orbital control on monsoon precipitation amount on millennial timescales

Rapeseed or linseed in dairy cow diets over 2 consecutive lactations:Effects on adipose fatty acid profile and carry-over effects on milk fat composition in subsequent early lactation

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