Revue bibliographique : Variations quantitatives et métabolisme des lipides dans les tissus adipeux et le foie au cours du cycle gestation-lactation. 1<sup>re</sup> partie : chez la ratte

Chilliard, Yves

doi:10.1051/rnd:19860702

Cited by 31 publications

(21 citation statements)

References 134 publications

(210 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This, together with other physiological arguments, has led to the concept of teleophorhesis (Chilliard, 1986), also called homehorhesis (Bauman and Currie, 1980;Bauman and Vernon, 1993). This phenomenon, whose biological significance is to ensure the species' survival (e.g.…”

Section: Effects Of Feeding Practices In Producing Animalsmentioning

confidence: 99%

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Bocquier

García

2010

Animal

View full text Add to dashboard Cite

There are numerous recent studies highlighting sustainability problems for the development of ruminant production systems (RPS) while facing increasing human food necessities and global climate change. Despite the complexity of the context, in our view the main objectives of the ruminants' physiologist should be convergent for both industrialized (IC) and developing countries (DC) in a common and global strategy of advancing knowledge. In DC, this means improving the efficiency of RPS, taking into account the unique possibility of using rangelands. For IC settings, RPS should be revisited in terms of autonomy and environment-friendly feeding and managing practices. Assuming that competition for feed/food use is still a crucial criterion, future ruminant feeding systems (FeSyst) should preferably focus on lignocellulosic sources. According to biome distributions, and the recent increases in volumes of crop residues and their by-products, the annually renewed volumes of these biomasses are considerable. Therefore, we need to redesign our strategies for their efficient utilization at the local level. For this purpose, digestion processes and rumen functioning need to be better understood. The renewed vision of ruminal digestion through the reduction of greenhouse gas emissions is also a key aspect as it is an environmental demand that cannot be ignored. With regard to other ruminants' physiological functions, accumulated knowledge could be mobilized into an integrative approach that puts forward the adaptive capacities of animals to face variability in quantity and quality of supplied feeds. Basically, the reduction of inputs that were traditionally used to ensure FeSyst will need more flexible animals. In that sense, the concepts of homeostasis and teleophorhesis need to be updated and adapted to domestic species and breeds that were until now largely excluded from the dominant productive systems. In conclusion, a more holistic approach of research targets is required in which physiological functions and farmers' practices must converge and respond to each particular situation in an integral, dynamic and flexible conceptual perspective. From a scientific point of view, both for ICs and DCs, a broader range of experimental scenarios should be explored in order to arrive at innovative practices and solutions that respect environmental, ethical and economical issues. The clear challenge is to in evaluate the sustainability of RPSs. This includes, in our opinion, a strong interaction with other disciplines (multi-and trans-disciplinary conception), thus structuring new relevant indicators for the evaluation sustainability.

show abstract

Section: Effects Of Feeding Practices In Producing Animalsmentioning

confidence: 99%

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Bocquier

García

2010

Animal

View full text Add to dashboard Cite

show abstract

“…When the animal is not at maintenance, the teleophoretic [20] regulations are active, coordinating the metabolisms by readjusting the set points of the homeostatic regulations [6,23]. These adaptations are such that the integrity of the organism can be maintained whilst at the same time supporting metabolic mobilisations for production and establishing saving and recycling mechanisms.…”

Section: Characterisation Of the Physiological Processes Involved In mentioning

confidence: 99%

Adaptive abilities of the females and sustainability of ruminant livestock systems. A review

Blanc

Bocquier²,

Agabriel

et al. 2006

Anim. Res.

View full text Add to dashboard Cite

-In a systemic approach, the breeder can be considered as the decisional component of the livestock system, whereas animals are usually depicted to be part of its biotechnical component. The animal itself is a biological system whose ability to survive, grow, reproduce and cope with the environnement and livestock practices play a major role in the ability of the livestock system to sustain. In such a conceptual representation of the system, the reproductive females draw a peculiar attention since they determine in a great part the productivity and the durability of the system through their abilities to maintain their own production level (milk production, numeric productivity) and to save their reproductive efficiency (repeated pregnancies and lactations) over years. Considering the animal level and its lifespan, it is clear that the abilities to adapt rely on behavioural and physiological regulatory processes. The study of the biological mechanisms involved in the adaptation to undernutrition is particularly interesting since regulatory processes implied in energy metabolism may interfere directly or indirectly with the reproductive function, and consequently, with the durability of the livestock system. A biological significance of such relationships between nutrition and reproduction is given that they allow the female to be informed about the associated risk of entering a productive process facing the uncertainty of the nutritional context. Although the general mechanisms implied in the ability to adapt to the underfeeding constraint are conserved among ruminants, the thresholds (or priorities) may largely differ according to the breed within the same species. Hence, in order to evaluate the ability of the ruminant livestock systems to perpetuate in hard environments (maintaining their production levels) or to assess sustainable objectives (opening bushy landscapes by increasing grazing pressure), animals' inherent adaptive potentialities have to be well known. Résumé -Capacités adaptatives des femelles et durabilité des systèmes d'élevage. Synthèse bibliographique. Dans une représentation systémique du système d'élevage, l'éleveur incarne la composante décisionnelle du système, tandis que l'animal constitue, avec la ressource, sa composante biotechnique. L'animal lui-même peut être considéré comme un système biologique soumis à un environnement contraignant, dont les aptitudes à survivre, croître, se reproduire et s'adapter jouent un rôle fondamental dans la pérennité du système d'élevage. Les femelles reproductrices tiennent une place particulière dans cette représentation car non seulement elles déterminent une large part de la productivité du système par leur propre niveau de production (production laitière, productivité numérique), mais elles en assurent également sa reproductibilité au cours du temps (investissement reproductif). A l'échelle de l'individu et de sa durée de vie, les modalités d'adaptation reposent sur des processus de régulations comportementales et physiologiques. De tels pro...

show abstract

“…However, decrease in milk yield or in litter growth have also been observed [27,49]. Catabolism of body reserves as well as partition of nutrients are under the control of numerous metabolic hormones [13,23]. Among these, insulin, hormones from the somatotropic axis (GH, IGF-I) and corticosteroids play an important role.…”

mentioning

confidence: 99%

Influence of feed restriction in primiparous lactating sows on body condition and metabolic parameters

Quesnel¹,

Pasquier²,

Mounier³

et al. 1998

Reprod. Nutr. Dev.

View full text Add to dashboard Cite

show abstract

Revue bibliographique : Variations quantitatives et métabolisme des lipides dans les tissus adipeux et le foie au cours du cycle gestation-lactation. 1^re partie : chez la ratte

Cited by 31 publications

References 134 publications

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Adaptive abilities of the females and sustainability of ruminant livestock systems. A review

Influence of feed restriction in primiparous lactating sows on body condition and metabolic parameters

Contact Info

Product

Resources

About

Revue bibliographique : Variations quantitatives et métabolisme des lipides dans les tissus adipeux et le foie au cours du cycle gestation-lactation. 1re partie : chez la ratte

Cited by 31 publications

References 134 publications

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Sustainability of ruminant agriculture in the new context: feeding strategies and features of animal adaptability into the necessary holistic approach

Adaptive abilities of the females and sustainability of ruminant livestock systems. A review

Influence of feed restriction in primiparous lactating sows on body condition and metabolic parameters

Contact Info

Product

Resources

About

Revue bibliographique : Variations quantitatives et métabolisme des lipides dans les tissus adipeux et le foie au cours du cycle gestation-lactation. 1^re partie : chez la ratte