Search Results - "Peyraud, J L"

Review: Why and how to regulate animal production and consumption: The case of the European Union by Guyomard, H., Bouamra-Mechemache, Z., Chatellier, V., Delaby, L., Détang-Dessendre, C., Peyraud, J.-L., Réquillart, V.

“…Throughout the world, animal production faces huge sustainability challenges. The latter are exacerbated in the European Union (EU) by consumption issues…”
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Influence of particle size and density on mean retention time in the rumen of dairy cows by Dufreneix, F, Faverdin, P, Peyraud, J-L

“…Increasing rumen-undegraded protein is one challenge of ruminant nutrition to both meet protein requirements of animals and reduce nitrogen excretion in the…”
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Linear relationship between increasing amounts of extruded linseed in dairy cow diet and milk fatty acid composition and butter properties by Hurtaud, C, Faucon, F, Couvreur, S, Peyraud, J-L

“…The aim of this experiment was to compare the effects of increasing amounts of extruded linseed in dairy cow diet on milk fat yield, milk fatty acid (FA)…”
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The effects of forage proportion and rapidly degradable dry matter from concentrate on ruminal digestion in dairy cows fed corn silage-based diets with fixed neutral detergent fiber and starch contents by Lechartier, C, Peyraud, J-L

“…This study investigated the effects of the forage-to-concentrate (F:C) ratio and the rate of ruminal degradation of carbohydrates from the concentrate on…”
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The effects of starch and rapidly degradable dry matter from concentrate on ruminal digestion in dairy cows fed corn silage-based diets with fixed forage proportion by Lechartier, C, Peyraud, J-L

“…This study investigated the effects of the type (starch vs. nonstarch) and rate of ruminal degradation of carbohydrates from the concentrate on digestion in…”
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Animal board invited review: Improving animal health and welfare in the transition of livestock farming systems: Towards social acceptability and sustainability by Ducrot, C., Barrio, M.B., Boissy, A., Charrier, F., Even, S., Mormède, P., Petit, S., Pinard-van der laan, M.-H., Schelcher, F., Casabianca, F., Ducos, A., Foucras, G., Guatteo, R., Peyraud, J.-L., Vayssier-Taussat, M., Veysset, P., Friggens, N.C., Fernandez, X.

“…•Improving jointly health and welfare of farm animals raises new research questions.•An integrated measure of animal health through their lifespan has to be…”
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The linear relationship between the proportion of fresh grass in the cow diet, milk fatty acid composition, and butter properties by Couvreur, S, Hurtaud, C, Lopez, C, Delaby, L, Peyraud, J L

“…Fresh grass in the cow diet improves the rheological and nutritional properties of butter. However, the relationship between the proportion of fresh grass in…”
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Effects of feeding camelina (seeds or meal) on milk fatty acid composition and butter spreadability by Hurtaud, C, Peyraud, J L

“…The nutritional and rheological properties of butter depend on the fatty acid composition of milk. Therefore, feeding oilseeds rich in unsaturated fatty acids…”
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Milk protein synthesis in response to the provision of an "ideal" amino acid profile at 2 levels of metabolizable protein supply in dairy cows by Haque, M N, Rulquin, H, Andrade, A, Faverdin, P, Peyraud, J L, Lemosquet, S

“…Providing a well-balanced supply of essential AA (EAA) can serve as an opportunity to reduce the protein intake for dairy cows by increasing the efficiency of…”
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High-resolution assessment of French grassland dry matter and nitrogen yields by Graux, A.-I., Resmond, R., Casellas, E., Delaby, L., Faverdin, P., Le Bas, C., Ripoche, D., Ruget, F., Thérond, O., Vertès, F., Peyraud, J.-L.

“…•Grassland DM, water and N fluxes were simulated at the scale of France.•Simulations used an improved version of the process-based crop model STICS.•Soil,…”
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Effects of glucose, propionic acid, and nonessential amino acids on glucose metabolism and milk yield in Holstein dairy cows by Lemosquet, S, Delamaire, E, Lapierre, H, Blum, J W, Peyraud, J L

“…Whole-body glucose rate of appearance (Ra) responses and milk lactose secretion were compared in dairy cows receiving duodenal infusions of glucose (Glc), a…”
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Combined effects of trans-10,cis-12 conjugated linoleic acid, propionate, and acetate on milk fat yield and composition in dairy cows by Maxin, G, Glasser, F, Hurtaud, C, Peyraud, J L, Rulquin, H

“…Diets inducing milk fat depression (MFD) are known to alter ruminal lipid metabolism, leading to the formation of specific isomers [such as trans-10,cis-12…”
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Composition of milk fat from cows selected for milk fat globule size and offered either fresh pasture or a corn silage-based diet by Couvreur, S, Hurtaud, C, Marnet, P G, Faverdin, P, Peyraud, J L

“…The objective of this study was to examine the synthesis and composition of milk produced by dairy cows that secrete either small milk fat globules (SMFG) or…”
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Restricting daily time at pasture at low and high pasture allowance: effects on pasture intake and behavioral adaptation of lactating dairy cows by Pérez-Ramírez, E, Peyraud, J L, Delagarde, R

“…In pasture-based dairy systems, daily time at pasture is restricted during several periods of the year. The aim of this experiment was to evaluate the effect…”
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Substitution rate and milk yield response to corn silage supplementation of late-lactation dairy cows grazing low-mass pastures at 2 daily allowances in autumn by Pérez-Prieto, L A, Peyraud, J L, Delagarde, R

“…Feed costs in dairy production systems may be decreased by extending the grazing season to periods such as autumn when grazing low-mass pastures is highly…”
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N-alkanes v. ytterbium/faecal index as two methods for estimating herbage intake of dairy cows fed on diets differing in the herbage : maize silage ratio and feeding level by Pérez-Ramírez, E., Peyraud, J. L., Delagarde, R.

“…The aim of this study was to compare the n-alkanes and the ytterbium (Yb)/faecal index techniques as two methods for estimating the herbage intake of dairy…”
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Adaptations of mammary uptake and nutrient use to once-daily milking and feed restriction in dairy cows by Guinard-Flament, J, Delamaire, E, Lamberton, P, Peyraud, J L

“…The aim of this study was to gain a clearer understanding of the different levels of regulation involved in the reduction in milk yield in response to…”
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Differential impact of milk fatty acid profiles on cardiovascular risk biomarkers in healthy men and women by Malpuech-Brugère, C, Mouriot, J, Boue-Vaysse, C, Combe, N, Peyraud, J.L, LeRuyet, P, Chesneau, G, Morio, B, Chardigny, J.M

“…Background/Objectives: The objective of this study was to evaluate the impact of three specific ruminant (R) milk fats resulting from modification of the cow's…”
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GrazeIn: a model of herbage intake and milk production for grazing dairy cows. 3. Simulations and external validation of the model by Delagarde, R, Valk, H, Mayne, C.S, Rook, A.J, González-Rodríguez, A, Baratte, C, Faverdin, P, Peyraud, J.L

“…GrazeIn is a model for predicting herbage intake and milk production of grazing dairy cows. The objectives of this paper are to test its robustness according…”
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Changing dietary cation-anion difference for dairy cows fed with two contrasting levels of concentrate in diets by Apper-Bossard, E, Peyraud, J L, Faverdin, P, Meschy, F

“…High-producing dairy cows are commonly fed diets containing a high proportion of rapidly degradable starch, which can cause subacute acidosis and reduce dry…”
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