Relation entre l'espace de diffusion de l'eau lourde mesurée in vivo et le volume hydrique corporel des bovins en croissance

Robelin, J.; Barboiron, Christiane; JAILLER, Roland

doi:10.1051/rnd:19820105

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…Nagy and Costa (1980) discussed some sources of errors in using isotopes to measure water fluxes in animals that are pertinent to measuring total body water. In the 30 steers used in the present experiment, overestimation of total body water was 6.9%, whereas 3.2% overestimation was observed by Robelin (1982) and 7.6% by Pfau and Salem (1972). The degree of overestimation was higher when a single blood sample was used to calculate total body water (12%, Bird et al, 1982;15%, Carnegie and Tulloh, 1968;16%, Meisner et al, 1980;20%, Little and McLean, 1981).…”

Section: Discussionmentioning

confidence: 45%

Evaluation of the Use of Deuterium Oxide Dilution Techniques for Determination of Body Composition of Beef Steers

Arnold

Hentges

Trenkle

1985

Journal of Animal Science

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Body composition as estimated by a one- or two-compartment deuterium oxide dilution technique was compared with directly measured body composition of 15 large- and 15 small-frame steers. Body composition of the steers was measured at 219, 412 and 603 kg live weight. Empty body protein was overestimated (P less than .05) 3.6% from a one-compartment model (1 CM, using the slope, intercept method), while empty body protein was underestimated (P less than .05) 5.4% from a two-compartment kinetic model (2CM). Empty body ether extract estimated by 1 CM was not significantly different from the direct method, although 4.7% larger. Empty body ether extract was overestimated (P less than .001) 32.2% by the 2CM. Empty body water was accurately estimated from the 1CM when a 3.2% correction factor was used for the overestimation of total body water by the 1CM, but water in gastrointestinal tract contents was overestimated (P less than .001) 13.4% by the 1CM. Empty body water was underestimated (P less than .001) 7.8% by the 2CM, and water in gastrointestinal tract contents was overestimated (P less than .001) 41.8% by the 2CM due to its dependence on regression equations that differ between groups of cattle. The 2CM offered no advantage over the 1CM. A three-compartment model was not better than the 2CM in estimating body water compartments. Assuming the amount of empty body water associated with either empty body protein or ash to be constant seemed to be valid. Suggested values calculated from data presented in the literature for growing cattle with an empty body weight greater than 175 kg are .302 and .0668, respectively, for the ratios of protein and ash to water. The relationship between empty body fat and water was, percentage empty body fat = 94.27--(1.267)(percentage empty body water), which had a 1.25 residual standard deviation and a .98 coefficient of determination.

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Section: Discussionmentioning

confidence: 45%

Evaluation of the Use of Deuterium Oxide Dilution Techniques for Determination of Body Composition of Beef Steers

Arnold

Hentges

Trenkle

1985

Journal of Animal Science

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“…Preliminary studies on a few animals (Doreau, Martin-Rosset and Dubroeucq, 1982) have shown a weak relationship between milk intake and foal growth. This relationship is stronger in other species such as cattle (Le Neindre, 1974) Doreau and Dussap (1980) (Robelin, 1982) (Meyer and Ahlswede, 1976) and at 4 months (Schryver et al, 1974), taking into consideration the differences in maturity between heavy and light breeds for a same body weight. It was assumed that the body water/fat-free mass ratio was the same for the two types at the same maturity, Protein weight was estimated as 79 % of fat-free dry matter from bibliographical data on 4-month old foals.…”

mentioning

confidence: 99%

Relationship between nutrient intake, growth and body composition of the nursing foal

Doreau¹,

Boulot²,

Martin‐Rosset³

et al. 1986

Reprod. Nutr. Dévelop.

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“…Water in gut contents and empty body water were estimated by using the 1CMR (Loy, 1983), with the exception that a 6% overestimation of total body water was assumed instead of 3.2%. A 6% overestimation was the average amount of overestimation in experiments reported by Pfau and Salem (1972), Robelin (1982) and Arnold et al (1985). A two-compartment model (2CM) and a threecompartment model (3CM), based upon the kinetics of the models (Shipley and Clark, 1972) were solved for compartment volumes.…”

Section: Methodsmentioning

confidence: 99%

Equilibration and Passage of Water in the Gastrointestinal Tract of Cattle in Relation to Estimating Body Water by Compartmental Kinetic Models2

Arnold

Trenkle

1986

Journal of Animal Science

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The volume of water in the rumen of four steers was increased (P less than .01) 47% when the level of ground cobs in the diet fed to the steers was changed from 10% to 50%. The difference in gut water content due to diet was not accurately (P greater than .10) estimated by deuterium oxide dilution using either one-, two- or three-compartmental models. Gut water was overestimated and empty body water underestimated when calculated by two-compartment models. The proportions of total body water within each compartment of a three-compartment model were quite variable among steers. When the two-compartment model was solved on the basis of measurements taken from either compartment, different compartment volumes were obtained. This indicated that the two-compartment model did not accurately describe the water equilibration process. Water in the contents of the proximal duodenum and terminal ileum equilibrated with blood in 30 min (range, 10 to 75 min), fecal water equilibrated in 4.3 h (range, 1.7 to 6.7 h) and water in rumen contents equilibrated in 8.3 h (range, 3.8 to 12.5 h). Diet did not affect (P greater than .10) equilibration time or the mean retention time of water in the gastrointestinal tract. Mean retention time was much longer than equilibration time; thus, the equilibration of water in the gastrointestinal tract contents was primarily dependent upon movement of water across the gut mucosa and not upon the flow of water through the gut. One-third of the water in the contents of the gastrointestinal tract was located outside the rumen. Compartmental modeling based only upon D2O disappearance from blood did not enable either gut water or rumen water to be accurately estimated.

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Relation entre l'espace de diffusion de l'eau lourde mesurée in vivo et le volume hydrique corporel des bovins en croissance

Cited by 11 publications

References 4 publications

Evaluation of the Use of Deuterium Oxide Dilution Techniques for Determination of Body Composition of Beef Steers

Evaluation of the Use of Deuterium Oxide Dilution Techniques for Determination of Body Composition of Beef Steers

Relationship between nutrient intake, growth and body composition of the nursing foal

Equilibration and Passage of Water in the Gastrointestinal Tract of Cattle in Relation to Estimating Body Water by Compartmental Kinetic Models2

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