Dietary Factors Influencing Calcium Assimilation

Hart, E. B.; Steenbock, H.; Kline, O. L.; Humphrey, Gregory

doi:10.3168/jds.s0022-0302(31)93475-9

Cited by 16 publications

(3 citation statements)

References 8 publications

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“…The solubility of Ca in the gastro-intestinal tract is related to the pH of the digesta (12), and Ca absorption is favoured by a low pH (2,66,87). Dietary supplementation with NH 4 C1 tends to increase Ca absorption (24,96,208) and it has been suggested that this increase may be a result of metabolism of the NH 4 C1 in the rumen to HC1 with a subsequent decrease in the intestinal pH (28).…”

Section: Dietary Factors Affecting the Availability Of Calcium And Phmentioning

confidence: 99%

“…Although lactose increases Ca absorption in calves (178) it is ineffective in mature sheep even when infused directly into the abomasum to avoid degradation in the rumen (28), and glucose, sucrose, xylose and sorbitol are similarly ineffective (28,87).…”

Section: Dietary Factors Affecting the Availability Of Calcium And Phmentioning

confidence: 99%

“…This excretion then plays an important role in Ca homoeostasis. Urinary excretion of Ca in ruminants is substantially increased in P deficiency (147,221) or after the ingestion of acidic substances (24,87,96,208) and is therefore an important route of excretion in times of stress.…”

Section: Dietary Factors Affecting the Availability Of Calcium And Phmentioning

confidence: 99%

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Calcium and phosphorus metabolism in ruminants with special reference to parturient paresis

Braithwaite¹

1976

Journal of Dairy Research

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CONTENTS Introduction 501 Absorption 502 Sites of absorption 502 Relationship betweon absorption, dietary 502 intake and requirements Mechanism of absorption 502 Control of calcium absorption 503 Dietary factors affecting the availability 504 of calcium and phosphorus Excretion 505 Additional losses in pregnancy and lactation 506 Skeletal metabolism 507 Endocrine regulation of metabolism 508 Role of parathyroid hormone, calcitonin 508 and vitamin D Role of growth hormone and oestrogen 509 Parturient paresis (milk fever) 509 Factors implicated in the development of 509 parturient paresis PAGE Failure of the endocrine control system 509 Calcium content of the diet 510 Decreased intestinal motility at par-510 turition Plasma oestrogen and progesterone con-511 centrations at parturition Stress of parturition 511 Age 511 A working hypothesis of the cause of 512 parturient paresis Prevention of parturient paresis by 512 dietary manipulation The calcium and phosphorus content 512 of the diet Low calcium diets prepartum 512 Acidic diets prepartum 513 Large oral doses of calcium at parturi-514 tion Prepartum administration of vitamin D 614 or its metabolites Feeding and Requirements 515 References 515

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Section: Dietary Factors Affecting the Availability Of Calcium And Phmentioning

confidence: 99%

Section: Dietary Factors Affecting the Availability Of Calcium And Phmentioning

confidence: 99%

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Calcium and phosphorus metabolism in ruminants with special reference to parturient paresis

Braithwaite¹

1976

Journal of Dairy Research

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Parturient hypocalcaemia in dairy cows: effects of dietary acidity on plasma minerals and calciotrophic hormones

Phillippo¹,

Reid²,

Nevison

1994

Research in Veterinary Science

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Effects of dietary acidity on calcium balance and mobilisation, bone morphology and 1,25 dihydroxyvitamin D in prepartal dairy cows

Damir¹,

Phillippo²,

Thorp

et al. 1994

Research in Veterinary Science

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Dietary Factors Influencing Calcium Assimilation

Cited by 16 publications

References 8 publications

Calcium and phosphorus metabolism in ruminants with special reference to parturient paresis

Calcium and phosphorus metabolism in ruminants with special reference to parturient paresis

Parturient hypocalcaemia in dairy cows: effects of dietary acidity on plasma minerals and calciotrophic hormones

Effects of dietary acidity on calcium balance and mobilisation, bone morphology and 1,25 dihydroxyvitamin D in prepartal dairy cows

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