Variations au cours de la journée des teneurs en certains constituants plasmatiques chez la jument poulinière

Doreau, M.; Martin‐Rosset, W.; Barlet, J.P.; Dubroeucq, H.; Lefaivre, Renée; Roux, R.; Sornet, Claire

doi:10.1051/rnd:19810101

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…The mean levels of blood parameters were close to values given by Doreau, Martin-Rosset and Barlet (1981a). Variations in 3-HB according to physiological state confirms the data of Doreau, Martin-Rosset and Barlet (1981b).…”

Section: Blood Measurementssupporting

confidence: 88%

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Effect of parity and physiological state on intake, milk production and blood parameters in lactating mares differing in body size

Doreau¹,

Boulot²,

Martin‐Rosset³

1991

Anim. Sci.

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Voluntary food intake, milk production and blood characteristics were measured in mares between the 3rd month before foaling and the first 5 weeks of lactation. The effect of breed during pregnancy was determined using 15 light mares and eight heavy mares (522 and 763 kg live weight (LW) after foaling respectively). The effect of parity was studied on light mares (seven were primiparous and eight were multiparous). In lactation, only four primiparous and four multiparous light mares were retained. Diet consisted of 900 g hay and 100 g concentrates per kg and was offered ad libitum. Voluntary food intake in pregnancy was higher for heavy mares than for light mares: 15-2 v. 10-3 kg dry matter (DM) daily. This difference was explained by differences in LW, since DM intake was the same when expressed as a fraction of LW or metabolic weight (M). Energy and nitrogen supply exceeded requirements, in the same way for light and heavy mares. No significant variations in blood measurements were observed between light and heavy mares, except for glucose. Primiparous mares ate less DM than multiparous mares in pregnancy: 9-7 v. 10-8 kg DM (P > 0-05), significantly so relative to LW and M. DM intake per kg LW or M depended on the parity. This difference had no effect on blood measurements, except for acetate. During lactation, no other differences in voluntary food intake were observed with regard to parity, whatever the week of lactation. Milk yield was higher for multiparous mares than for primiparous mares (16-6 v. 14-6 kg daily). Gross energy of milk varied according to a similar pattern, principally because of variations in fat concentration (20-2 v. 16-5 g/kg for multiparous and primiparous mares respectively). Energy balance was significantly more positive for multiparous than for primiparous mares.

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Section: Blood Measurementssupporting

confidence: 88%

“…Variations in 3-HB according to physiological state confirms the data of Doreau, Martin-Rosset and Barlet (1981b). Acetate was found to be related to total forage intake as previously shown (Doreau et al, 1981a). Acetate was found to be related to total forage intake as previously shown (Doreau et al, 1981a).…”

Section: Blood Measurementssupporting

confidence: 67%

Effect of parity and physiological state on intake, milk production and blood parameters in lactating mares differing in body size

Doreau¹,

Boulot²,

Martin‐Rosset³

1991

Anim. Sci.

Self Cite

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“…The ketogenic response is exacerbated if endogenous glucose demands are increased, e.g. during pregnancy and lactation (Felig 1973;Doreau et al 1981;Jeanblain and Durix 1985;Mitchell et al 1995;Dalrymple 2004;Ayala et al 2006). Domestic ruminants, which rely on gluconeogenesis rather than dietary carbohydrate to meet their glucose needs, appear particularly susceptible to pathological hyperketonemia under conditions of elevated glucose demand (Heitmann et al 1987).…”

Section: Ketone Bodies: Glucose Substitutesmentioning

confidence: 99%

Hypercarnivory and the brain: protein requirements of cats reconsidered

Eisert

2010

J Comp Physiol B

103

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The domestic hypercarnivores cat and mink have a higher protein requirement than other domestic mammals. This has been attributed to adaptation to a hypercarnivorous diet and subsequent loss of the ability to downregulate amino acid catabolism. A quantitative analysis of brain glucose requirements reveals that in cats on their natural diet, a significant proportion of protein must be diverted into gluconeogenesis to supply the brain. According to the model presented here, the high protein requirement of the domestic cat is the result of routing of amino acids into gluconeogenesis to supply the needs of the brain and other glucose-requiring tissues, resulting in oxidation of amino acid in excess of the rate predicted for a non-hypercarnivorous mammal of the same size. Thus, cats and other small hypercarnivores do not have a high protein requirement per se, but a high endogenous glucose demand that is met by obligatory amino acid-based gluconeogenesis. It is predicted that for hypercarnivorous mammals with the same degree of encephalisation, endogenous nitrogen losses increase with decreasing metabolic mass as a result of the allometric relationships of brain mass and brain metabolic rate with body mass, possibly imposing a lower limit for body mass in hypercarnivorous mammals.

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Cephalic Phase of Digestion: The Effect of Meal Frequency

Houpt

1986

Interaction of the Chemical Senses With Nutrition

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Variations au cours de la journée des teneurs en certains constituants plasmatiques chez la jument poulinière

Cited by 7 publications

References 8 publications

Effect of parity and physiological state on intake, milk production and blood parameters in lactating mares differing in body size

Effect of parity and physiological state on intake, milk production and blood parameters in lactating mares differing in body size

Hypercarnivory and the brain: protein requirements of cats reconsidered

Cephalic Phase of Digestion: The Effect of Meal Frequency

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