Phosphorus nutrition of beef cattle. 3. Effect of supplementation on the phosphorus content of blood and on the phosphorus and calcium contents of hair and bone of grazing steers

1973 ◽  
Vol 13 (65) ◽  
pp. 625
Author(s):  
RDH Cohen
Keyword(s):  
Beef Cattle ◽  
Phosphorus Content ◽  
Phosphorus Deficiency ◽  
Calcium Content ◽  
Inorganic Phosphorus ◽  
Phosphorus Concentration ◽  
Beef Steers ◽  
Dietary Phosphorus ◽  
Calcium Status ◽  
Phosphorus Levels

The effect of phosphorus supplements of 35 and 70 g per head per week on the calcium and phosphorus contents of bone and hair and on plasma inorganic phosphorus levels of steers was compared with those of unsupplemented steers which grazed carpet grass (Axonopus affinis) pasture of low phosphorus content at Grafton, New South Wales. The supplements had no effect on plasma inorganic phosphorus concentration. Hair phosphorus content was not affected by either dietary phosphorus or season. Hair calcium was not influenced by pasture calcium but was related to season, with highest levels in summer and lowest in winter. Supplementation increased the amount of phosphorus in dry fat-free rib-bone (P < 0.05) but this effect was not apparent in the first three months of supplementation. The amount of calcium in bone (Y) was influenced by pasture calcium content (X1) and bone phosphorus content (X2). This relationship was described by the equation: Y = 51.0 + 140.81X1 - 3.33X2(R2 = 0.71; P < 0.001) It is suggested that bone phosphorus levels below 14.3, 13.5, and 12.7 per cent of dry fat-free bone may represent a phosphorus deficiency state in 15-27-month-old steers when pasture calcium levels are 0.18, 0.15, and 0.12 per cent respectively. Further, when estimates of the calcium status of beef steers are made from measurements of bone calcium content, corrections should be applied for bone phosphorus content. It is concluded that measurement of bone phosphorus and calcium provides the most sensitive indication of the phosphorus and calcium status of beef cattle and that when phosphorus supplementation has no effect on liveweight of beef steers its effect on mineralization of bone tissue may justify its use, particularly in areas where poor bone development and lameness occur.

Correction - Phosphorus nutrition of beef cattle. 3. Effect of supplementation on the phosphorus content of blood and on the phosphorus and calcium contents of hair and bone of grazing steers

1973 ◽  
Vol 13 (65) ◽  
pp. 625
Author(s):  
RDH Cohen
Keyword(s):  
Beef Cattle ◽  
Phosphorus Content ◽  
Phosphorus Deficiency ◽  
Calcium Content ◽  
Inorganic Phosphorus ◽  
Phosphorus Concentration ◽  
Beef Steers ◽  
Dietary Phosphorus ◽  
Calcium Status ◽  
Phosphorus Levels

The effect of phosphorus supplements of 35 and 70 g per head per week on the calcium and phosphorus contents of bone and hair and on plasma inorganic phosphorus levels of steers was compared with those of unsupplemented steers which grazed carpet grass (Axonopus affinis) pasture of low phosphorus content at Grafton, New South Wales. The supplements had no effect on plasma inorganic phosphorus concentration. Hair phosphorus content was not affected by either dietary phosphorus or season. Hair calcium was not influenced by pasture calcium but was related to season, with highest levels in summer and lowest in winter. Supplementation increased the amount of phosphorus in dry fat-free rib-bone (P < 0.05) but this effect was not apparent in the first three months of supplementation. The amount of calcium in bone (Y) was influenced by pasture calcium content (X1) and bone phosphorus content (X2). This relationship was described by the equation: Y = 51.0 + 140.81X2 - 3.33X2(R2 = 0.71; P < 0.001) It is suggested that bone phosphorus levels below 14.3, 13.5, and 12.7 per cent of dry fat-free bone may represent a phosphorus deficiency state in 15-27-month-old steers when pasture calcium levels are 0.18, 0.15, and 0.12 per cent respectively. Further, when estimates of the calcium status of beef steers are made from measurements of bone calcium content, corrections should be applied for bone phosphorus content. It is concluded that measurement of bone phosphorus and calcium provides the most sensitive indication of the phosphorus and calcium status of beef cattle and that when phosphorus supplementation has no effect on liveweight of beef steers its effect on mineralization of bone tissue may justify its use, particularly in areas where poor bone development and lameness occur.

Phosphorus nutrition of beef cattle. 2. Relation of pasture phosphorus to phosphorus content of blood, hair and bone grazing steers

1973 ◽  
Vol 13 (60) ◽  
pp. 5 ◽  
Author(s):  
RDH Cohen
Keyword(s):  
Phosphorus Content ◽  
Correlation Coefficients ◽  
Inorganic Phosphorus ◽  
Beef Steers ◽  
Grazing Cattle ◽  
Low Phosphorus ◽  
Phosphorus Status ◽  
The Relationship ◽  
Phosphorus Levels ◽  
Do So

The phosphorus content was measured every three months in pasture and in blood, hair and bone of beef steers that had grazed pastures of low phosphorus content for 12 months. This was done to determine the effect that changes in pasture phosphorus levels had on the phosphorus content of animal tissue. The correlation coefficients between pasture phosphorus content and either the phosphorus content of hair or the concentration of inorganic phosphorus in plasma were not significant. The relationship between the phosphorus content of pasture (x) and dry fat-free rib-bone (y) was given by the equation y = 9.5 + 33.3x (r = 0.97; P < 0.05). It was concluded that bone phosphorus content could provide the best estimate of the phosphorus status of grazing cattle because it significantly reflected variation in the phosphorus content of pasture whereas blood and hair failed to do so.

Effects of drought, aging and phosphorus status on leaf acid phosphatase activity in wheat

1984 ◽  
Vol 35 (6) ◽  
pp. 777 ◽  
Author(s):  
KD McLachlan
Keyword(s):  
Acid Phosphatase ◽  
Phosphatase Activity ◽  
Total Phosphorus ◽  
Acid Phosphatase Activity ◽  
Phosphorus Deficiency ◽  
Moisture Stress ◽  
Inorganic Phosphorus ◽  
Plant Age ◽  
Phosphorus Concentration ◽  
Total Phosphorus Concentration

Wheat plants grown at two levels of phosphorus supply were subjected to drought or given adequate water. Acid phosphatase activities in the youngest fully expanded leaves, and inorganic and total phosphorus concentrations in the plant tops were determined at four stages of crop development. Phosphatase activity increased with plant age, with phosphorus deficiency and with drought. Inorganic phosphorus concentration decreased with plant age and phosphorus deficiency. Drought markedly decreased the inorganic phosphorus concentration in phosphorus sufficient plants but had little effect on the concentration in deficient plants. Total phosphorus concentration increased as the plants aged and was greatest where the plants were phosphorus sufficient and adequately watered. Drought markedly reduced the total phosphorus concentration in phosphorus sufficient plants, but had little effect on the total phosphorus concentration in deficient plants. Leaf acid phosphatase activity was related inversely to the inorganic phosphorus concentration in the plant tops. Changes in activity with aging, phosphorus supply and moisture stress were associated with changes in the inorganic phosphorus concentration. An argument is developed which indicates that a single 'critical value' separating sufficient from deficient plants, either for phosphatase activity, inorganic or total phosphorus concentration, is not practicable. Different values will be required for different stages of maturity. Complications introduced by drought and aging, through their effect on phosphorus concentration and enzyme activity, were overcome by developing phosphatase zymograms. Two bands were specifically associated with phosphorus deficient plants irrespective of plant age or moisture stress. The technique offers further opportunity for studies in phosphorus metabolism and shou!d provide a useful means of diagnosing phosphorus deficiency in field groRn plants.

Phosphorus turnover in sheep

1967 ◽  
Vol 18 (4) ◽  
pp. 635 ◽  
Author(s):  
FM Tomas ◽  
RJ Moir ◽  
M Somers
Keyword(s):  
Rumen Fluid ◽  
Inorganic Phosphorus ◽  
Dietary Phosphorus ◽  
The Mean ◽  
Four Levels ◽  
Dietary Phosphorus Intake ◽  
Phosphorus Turnover ◽  
Very High ◽  
Phosphorus Intake ◽  
Phosphorus Levels

Rumen fluid, serum, and parotid salivary inorganic phosphorus concentrations in sheep given four levels of dietary phosphorus (0.42–4.02 g/day) were directly related to phosphorus intake. There was a very high correlation (r = +0.91; P < 0.001) between inorganic phosphorus concentrations in centrifuged rumen fluid and in parotid saliva. Serum inorganic phosphorus concentrations were positively correlated with those of saliva (r = +0.64; P< 0.05) and also with those in centrifuged rumen fluid (r = +0.75; P<0.01). The range in the mean daily saliva volumes collected from one parotid gland in each sheep was 3.2 to 4.2 l/day. The calculated minimum total salivary phosphorus secretion ranged from 3.0 g/day on the lowest dietary phosphorus intake to 5.3 g/day on the highest, the corresponding ratios of salivary to dietary phosphorus being from 7.24 to 1 .32 g/g. It appeared that salivary phosphorus was the major source of phosphorus to the rumen, and was also the principal determinant of rumen fluid inorganic phosphorus levels.

A study of serum mineral changes in lactating Welsh mountain ewes under different grazing conditions with special reference to hypomagnesaemia

1964 ◽  
Vol 62 (3) ◽  
pp. 341-351 ◽  
Author(s):  
J. L. L'Estrange ◽  
R. F. E. Axford
Keyword(s):  
Phosphorus Content ◽  
Marked Decrease ◽  
Serum Magnesium ◽  
Inorganic Phosphorus ◽  
Fertilizer Treatment ◽  
Early Lactation ◽  
High Nitrogen ◽  
Short Term ◽  
Phosphorus Levels ◽  
Mineral Changes

Short-term grazing trials with daily blood sampling were carried out on Welsh mountain ewes in early lactation.1. A small decrease in serum magnesium levels and a very marked decrease in serum inorganic phosphorus levels, were observed in two groups of four ewes, when one group was transferred from an old pasture to a fertilized (high nitrogen and potash) fresh spring ley, and the others to a similar fresh ley but untreated. There was little effect from the fertilizer treatment on the magnesium, calcium, potassium, sodium or phosphorus content of the herbage.

scholarly journals RELATIONSHIP BETWEEN INORGANIC PHOSPHORUS AND INORGANIC CALCIUM IN CHICKEN BLOOD PLASMA

1969 ◽  
Vol 49 (2) ◽  
pp. 193-195 ◽  
Author(s):  
E. E. Gardiner
Keyword(s):  
Blood Plasma ◽  
Inorganic Phosphorus ◽  
Regression Equations ◽  
Plasma Samples ◽  
Phosphorus Level ◽  
Dietary Phosphorus ◽  
Low Levels ◽  
Chicken Blood ◽  
Phosphorus Levels

Male crossbred broiler-type chickens were fed graded levels of dietary phosphorus from hatching to 4 weeks of age. Plasma inorganic phosphorus and plasma inorganic calcium were determined on aliquots of blood plasma samples taken when the chickens were 4 weeks of age. The level of plasma inorganic phosphorus decreased when the chickens were fed low levels of dietary phosphorus. The level of plasma inorganic calcium was inversely related to the plasma inorganic phosphorus level. Regression equations were different for each of the four dietary phosphorus levels fed. The sum of plasma inorganic phosphorus and plasma inorganic calcium was very similar for the four treatments.

scholarly journals Evaluasi Kadar Kalsium dan Fospor pada Telur Itik Asin dengan Penambahan Ekstrak Daun Pandan dengan Konsentrasi yang Berbeda

bionature ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Amiruddin Ahmad ◽  
Muh. Jurhadi Kadir
Keyword(s):  
Leaf Extract ◽  
Phosphorus Content ◽  
Calcium Content ◽  
Leaf Extracts ◽  
A Value ◽  
Calcium Phosphorus ◽  
Phosphorous Content ◽  
Calcium And Phosphorus ◽  
Salted Duck Eggs ◽  
Phosphorus Levels

Abstract. This study aims to determine the use of pandan leaf extracts to evaluate the levels of calcium and phosphorus of salted duck eggs. The results showed that the effect of the addition of leaf extracts on the evaluation of calcium levels and phosphorus levels in salted duck eggs with different concentrations, did not have a significant effect or had no significant effect (P> 0.05) on calcium content, T0 treatment was not significantly different from T1, T2 and T3 and vice versa. even so but it still has an increase in calcium levels. Treatment of calcium levels from lowest to highest are T1 (0.15%), T0 (0.16%), T3 (0.17%) and T2 (0.17%). Phosphorus levels in salted duck eggs given pandan leaf extract with different concentrations have a very significant effect (P <0.05) on the phosphorus content, T0 treatment is significantly different from T1, T2, and T3, T1 is significantly different from T0 and T3 but not significantly different from T2, T2 is significantly different from T0 but not significantly different from T1 and T3, T3 is significantly different from T0 and T1 but not significantly different from T2. even so but it still has an increase in calcium levels. Calcium levels from lowest to highest are T0 (0.19%), T3 (0.23%), T2 (0.23%) and T1 (0.26%). The conclusion is that the treatment of the addition of fragrant pandan leaf extract can not affect calcium levels but affect the levels of phosphorus salted duck eggs. The best treatment is T3 treatment (30% pandanus fragrant leaf extract) with a value of 0.16 calcium levels and a value of phosphorous content 0.22. Keywords: Salted eggs, pandan leaves, calcium, phosphorus.

Sign in / Sign up

Export Citation Format

Share Document