Sheep Hematology from Birth to Maturity III. Serum Calcium, Phosphorus, Magnesium, Sodium and Potassium

Long, Cheryl; Ullrey, D. E.; Miller, E. R.; Vincent, Bernard; Zutaut, C. L.

doi:10.2527/jas1965.241145x

Cited by 19 publications

(7 citation statements)

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“…However, particularly for Cu, P and Ca, these 'age' differences were large in relation to the average differences among the breeds. For concentrations of P in blood, Becker & Smith (1950) and Long et al (1965) reported lower levels of P for lambs than for adults, in agreement with the present results. For Mg concentration the adults studied by Long et al exceeded lambs while the opposite was noted here.…”

Section: Age Differencessupporting

confidence: 92%

“…This supports evidence of significant breed differences in the concentrations of these minerals in another grassland flock comprising the Scottish Blackface, Cheviot and Welsh Mountain breeds and their crosses . For housed sheep fed on dry-lot until weaning, Long et al (1965) found no consistent significant difference among the Hampshire, Suffolk and Shropshire breeds in the concentrations of serum Ca, P, Mg, Na and K. Becker & Smith (1950) with Corriedale, Dorset and Hampshire breeds (also housed for part of the year) also reported an absence of significant breed differences for plasma Ca and P, but only 18 sheep were involved. Eagleton, Hall & Russell (1970) have reported that K concentrations in plasma were influenced by Ka genotype and breed.…”

Section: Genetic Considerationsmentioning

confidence: 95%

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The concentration of minerals in the blood of genetically diverse groups of sheep:V. Concentrations of copper, calcium, phosphorus, magnesium, potassium, and sodium in the blood of lambs and ewes

Wiener¹,

Field

1971

J. Agric. Sci.

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SUMMARYConcentrations of Cu, Ca, P, Mg, K and Na were examined in the blood plasma (whole blood for P) of 149 adult ewes and their 244, 15-week-old lambs in a grassland flock of sheep. The ewes were 3 or 4 years old and of five crossbred types produced by mating Scottish Blackface females to Border Leicester, dun Forest, Dorset Horn, Finnish Landrace and Tasmanian Merino rams. The lambs in turn were the offspring of these crossbred ewes, and two rams of each of the Oxford Down, Southdown, Soay breeds and one Cheviot ram.Breed of sire (but not sire within breed) was a significant source of variation in the concentration of all the minerals, except Na, in the blood of both ewes and lambs. Other factors considered were age of ewe and sex, birth type, type of rearing, and date of birth of lamb. None of these appeared to be significant sources of variation except that twins and triplets, if reared as such, had higher concentrations of Ca in their blood than lambs born and reared as singles; however the ewes with singles were on different pasture from those rearing 2–3 lambs. For the mineral levels in the blood of the lambs there was no significant interaction of breed of ram with cross-breed of ewe. The lambs had substantially higher concentrations of Cu and P in their blood than their mothers and also significantly higher concentrations of Ca, Mg and possibly K. This may not be attributable to age alone because the lambs and their mothers also differed in genotype.Heritability estimates based on parent-offspring regression were 0·4 ±0·14 for Cu and less than 0·2 for the other minerals.

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Section: Age Differencessupporting

confidence: 92%

Section: Genetic Considerationsmentioning

confidence: 95%

The concentration of minerals in the blood of genetically diverse groups of sheep:V. Concentrations of copper, calcium, phosphorus, magnesium, potassium, and sodium in the blood of lambs and ewes

Wiener¹,

Field

1971

J. Agric. Sci.

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“…The decline in Mg concentration with age observed here is supported by evidence of Vrzgula & Gdovin (1966) and Hemingway, Inglis & Ritchie (1960), but is contrary to some later observations of Hemingway et al (1963). Long et al (1965) claimed an increase in Mg concentration during growth and with gestation.…”

Section: Discussionsupporting

confidence: 76%

“…Becker & Smith (1950), Beeson, Terrill & Bolin (1944) and Vrzgula & Gdovin (1966) all found a decline in plasma inorganic P concentration with age, in contrast to our observation of a slight but steady increase in total P in whole blood. Long et al (1965) observed an increase from birth to 5 days of age followed by a decline to about 2 years.…”

Section: Discussionmentioning

confidence: 93%

The concentration of minerals in the blood of genetically diverse groups of sheep: II. Calcium, phosphorus, magnesium, potassium, sodium and chlorine concentrations for three hill-breeds and their crosses at pasture

Field

Wiener²,

Wood³

1969

J. Agric. Sci.

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Three-hundred and thirty-four female sheep of the Blackface, Cheviot and Welsh Mountain breeds and the crosses among these breeds kept as one flock at pasture were bled in September 1966. Concentrations of Ca, Mg, K, Na and Cl were determined on plasma and P on whole blood. Mean concentrations (mg/100 ml) were: Ca 9-65; P 5-54; Mg 2-02; K 23-2; Na 345; Cl 365; and coefficients of variation (%) 11-1, 18-1, 29-0, 10-5 6-7 and 2-3 respectively.Breed was a highly significant (P < 0-01) source of variation for Ca, P, Mg and Cl, but except for Mg, the contribution to the total variance was small (< 10 %). Average values for cross-bred ewes deviated significantly (P < 0-05) from those of pure-bred for Ca and P concentration. Live-weight, within class, had a small but significant effect on Ca and Mg concentration.The concentration of Ca and Mg declined very significantly with age of ewe, there was a similar trend for K, while ~P showed a slight but steady tendency to increase with age, and Cl showed a more erratic increase.For Ca, barren ewes had a lower concentration ( -0-44 mg/100 ml) than ewes with lambs whilst ewes with single lambs at birth had lower concentrations ( -0-35) than ewes with twins. Other factors with effects too large to be ignored (P < 0-1) were the interaction of breed x no. of lambs (K and Cl) and swayback history (Cl).inbreeding from 0 to 50 %. The animals were born and bred on the farm and managed as one flock The present paper deals with the concentrations since 1955. Five age classes were represented among of a number of minerals in the blood plasma (whole the ewes. Twenty ewes remained in the flock from blood for phosphorus) of sheep in a grassland flock among those which had produced swayback lambs comprising the Scottish

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“…However, Na and K in sheep serum expressed in mg/L as within the ranges 3000-4000 and 220-240, respectively, controlled by hormones from the adrenals, kidney glomerular complex and tubular mechanisms. (Michell-1974;Long et al, 1965).…”

Section: Introductionmentioning

confidence: 99%

Serum and Tissue Sodium (Na) and Potassium (k) Concentrations in Newborn, Growing and Adult Sheep

2016

ARC Journal of Animal and Veterinary Sciences

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Little is known of the physiological Na and K tissue changes from birth to adulthood in sheep and other livestock. The purpose of this study was to compare the changes in the sodium and potassium contents of liver, kidney and brain tissues in newborn lambs with those of growing and adult sheep tissues. Serum, Liver, kidney and brain tissue samples were taken from 32 newborn lambs, 20 growing lambs (mostly about 6 months), and 25 adult (2-6 years) from various farm locations of Central Trinidad. All mineral determinations were carried out on a Pye Unicam SP2900 Atomic Absorption Spectrophotometer. Serum N and K levels were not significantly different (P> 0.05) in new born lambs compared with levels in growing lambs and adult sheep. Higher Na levels but lower K levels were found in liver, (P<0.001) and brain (P<0.001) tissues of new born lambs compared with levels in growing lambs and adult sheep. Only a few animals had concentrations within the expected ranges for liver Na (35-39 m.Eq/w.wt) and liver (78-86 m.Eq/w.wt). K: Na ratios in liver tissues were about the value expected for ruminants of 2:1 which contrasted with ratio of unity found in newborn lambs. Preliminary indications from this study implied that not only was there a reversal of Na and K levels in liver but also in brain tissues of newborn compared with growing and adult sheep.

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Sheep Hematology from Birth to Maturity III. Serum Calcium, Phosphorus, Magnesium, Sodium and Potassium

Cited by 19 publications

References 0 publications

The concentration of minerals in the blood of genetically diverse groups of sheep:V. Concentrations of copper, calcium, phosphorus, magnesium, potassium, and sodium in the blood of lambs and ewes

The concentration of minerals in the blood of genetically diverse groups of sheep:V. Concentrations of copper, calcium, phosphorus, magnesium, potassium, and sodium in the blood of lambs and ewes

The concentration of minerals in the blood of genetically diverse groups of sheep: II. Calcium, phosphorus, magnesium, potassium, sodium and chlorine concentrations for three hill-breeds and their crosses at pasture

Serum and Tissue Sodium (Na) and Potassium (k) Concentrations in Newborn, Growing and Adult Sheep

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