A Study of Water and Electrolyte Metabolism in Sheep

English, P. B.

doi:10.1016/s0034-5288(18)34676-9

Cited by 37 publications

(2 citation statements)

References 35 publications

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“…The data on faecal sodium excretion have wider implications. The fact that it can exceed urinary sodium excretion in healthy animals might seem surprising but a similar pattern has emerged from other studies of herbivores, including sheep (Dewhurst, Harrison & Keynes, 1968;English, 1966), horses and cows (Tasker, 1967;Alexander, 1977;Aitken, 1976), and faecal sodium excretion is also substantial in rabbits (Grace, Munday & Noble, 1979). Whether this reflects differences in the gut of herbivores, or whether it reflects the fact that unlike man or laboratory rats (Michell, 1978(Michell, , 1980 they do not routinely consume sodium in exorbitant excess of their nutritional requirement, is an important question.…”

Section: Fasting Natriuresis and Other Aspectssupporting

confidence: 60%

Fluid and Electrolyte Excretion in Sheep: Comparison of the Effect of Reduced Food and Water Intake With Oestrus

Michell

1981

Exp Physiol

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SUMMARYFood and water intake were restricted by 29% for 48 h in ovariectomized ewes, to see whether such changes could cause a pattern of water and electrolyte excretion similar to that observed during the oestrous cycle. The closest resemblance appeared in the effect on water balance and there was also a rise in sodium excretion, as at oestrus. Restriction of intake failed to duplicate the marked sodium retention or, more particularly, the persistent potassium retention which follow natural oestrus. Restriction of food alone produced changes less similar to those seen at oestrus, mainly because this treatment caused a large increase in urine output. The similarity between the effects of restriction and 'fasting natriuresis' is discussed, with particular reference to the mildness of the stimulus in these experiments. Indications that the gut may be as important as the kidney in the regulation of salt and water balance are discussed in relation to other herbivores and to man.

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Section: Fasting Natriuresis and Other Aspectssupporting

confidence: 60%

Fluid and Electrolyte Excretion in Sheep: Comparison of the Effect of Reduced Food and Water Intake With Oestrus

Michell

1981

Exp Physiol

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“…The DMI was lower with T 2 (50% feed restriction) compared with T 3 (50% water restriction). English (1966) restricted the water intake of sheep to about 50% of adlibitum consumption and observed a decrease in DMI amounting to about 30% less than the drop in total water intake. Utley et al (1970) reported that the feed intake is significantly correlated with water intake.…”

Section: Effects Of Feed and Water Restrictions On Dmi Water Intake F...mentioning

confidence: 99%

Digestibility Coefficients, Some Blood and Rumen Metabolites and Physiological Responses in Sudan Nubian Goats Subjected to Varying Levels of Feed and Water Restrictions

Lutfi¹,

Ahmed²

2023

uofkjas

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Three yearling uncastrated males of Sudan Nubian goatsranging in weight between 14 and 20 kg were used in a 3x3 latin squaredesign experiment with the objective of studying the effects of feed andwater restriction on dry matter intake (DMI), water intake, digestibility ofnutrients, rumen components, blood urea-N (BUN), rectal temperatureand respiration rate. The experiment consisted of three treatments:Adlibitum feed and water, feed restricted to 50% of adlibitum level withadlibitum water, water restricted to 50% of adlibitum level with adlibitumfeed. The results revealed no significant treatment effects on water intake,urine volume, rectal temperature and respiration rate. However, DMIdiffered significantly between treatments. The adlibitum provision ofwater resulted in insignificant higher water intake compared with theother two treatments. Rectal temperature was higher in water restrictedgoats than in feed restricted goats, whereas respiration rate decreasedinsignificantly with both feed and water restrictions. Feed and waterrestrictions had no effect on the digestibility coefficients of the variousnutrients. Water restricted goats showed, however, different trends exceptfor ether extract digestibility which tended to decrease. Treatment had nosignificant effect on the total digestible nutrients (TDN) values. The TDNtended to be higher with water restriction. There was no significanttreatment effect on rumen pH, ammonia-N (NH3 -N) and BUN. Feed andwater shortage did not significantly affect digestibility of the proximatecomponents but tended to slightly affect rumen metabolites, BUN,respiration rate and rectal temperature.

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Distribution and Dynamics of Body Fluids in Sheep

Macfarlane¹

1975

The Blood of Sheep

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A Study of Water and Electrolyte Metabolism in Sheep

Cited by 37 publications

References 35 publications

Fluid and Electrolyte Excretion in Sheep: Comparison of the Effect of Reduced Food and Water Intake With Oestrus

Fluid and Electrolyte Excretion in Sheep: Comparison of the Effect of Reduced Food and Water Intake With Oestrus

Digestibility Coefficients, Some Blood and Rumen Metabolites and Physiological Responses in Sudan Nubian Goats Subjected to Varying Levels of Feed and Water Restrictions

Distribution and Dynamics of Body Fluids in Sheep

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