Phosphorus Requirement of the Baby Pig

Miller, E. R.; Ullrey, D. E.; Zutaut, C. L.; Baltzer, B. V.; Schmidt, D. A.; Hoefer, J. A.; Luecke, R. W.

doi:10.1093/jn/82.1.34

Cited by 28 publications

(17 citation statements)

References 15 publications

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“…When pooled across bone and sex, the data indicate that the feeding of higher levels of Ca,P resulted in an increase in the mechanical properties (bending moment, ultimate stress, yield stress and modulus of elasticity), geometrical measurements (moment of inertia and wall thickness) and percentage of ash of bones (table 3). Other researchers have also reported an increase in bone strength due to an increase in the level of Ca and P fed (Miller et al, 1962(Miller et al, , 1964Libal et al, 1969;Cromwell et al, 1972;Tanksley et al, 1976;Nimmo et al, 1980). Interactions did occur which indicated that the response of each bone to Ca,P level was not the same across the age periods evaluated in this study.…”

Section: Resultsmentioning

confidence: 50%

Influence of Age, Sex and Calcium and Phosphorus Levels on the Mechanical Properties of Various Bones in Swine

Crenshaw

Peo

Lewis

et al. 1981

Journal of Animal Science

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Section: Resultsmentioning

confidence: 50%

Influence of Age, Sex and Calcium and Phosphorus Levels on the Mechanical Properties of Various Bones in Swine

Crenshaw

Peo

Lewis

et al. 1981

Journal of Animal Science

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“…The reducing effect of zeolite on the amount of supernatant P after HCl addition in the present study may explain the drop in plasma iP seen in previous studies on zeolite supplementation in pregnant dry cows (Thilsing‐Hansen et al., 2002, 2003), in chickens (Scheideler, 1989; Watkins and Southern, 1992) and in swine (Ward et al., 1991). Long‐term phosphorus deprivation may lead to unwanted side‐effects such as anorexia (Gartner et al., 1982; Call et al., 1986; Wan Zahari et al., 1990), haemolytic anaemia (Kaneko et al., 1997), rachitic lesions (Miller et al., 1964) and decreased milk yield (Muschen et al., 1988). The zeolite‐induced hypophosphataemia must, therefore, be considered in relation to depth and duration when implementing zeolite supplementation in pregnant dry cows for milk fever prevention.…”

Section: Discussionmentioning

confidence: 99%

In Vitro Binding Capacity of Zeolite A to Calcium, Phosphorus and Magnesium in Rumen Fluid as Influenced by Changes in pH

Thilsing

Jørgensen

Poulsen³

2006

Journal of Veterinary Medicine Series A

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An in vitro experiment was designed to mimic the transport of ingested zeolite A in the forestomachs and proximal part of the small intestine so as to evaluate the binding capacity of zeolite A to Ca, P and Mg as influenced by changes in pH. This was done by incubation of rumen fluid solutions with and without zeolite, as well as varying the content of Ca and/or P. The pH was lowered by addition of HCl so as to mimic abomasal conditions, followed by subsequent HCO3- addition to mimic small intestinal pH. Rumen fluid samples were taken at strategic time points in the experiment. All samples were centrifuged and the supernatant analysed for Ca, P and Mg as indicators of the amount of unbound mineral. The addition of zeolite to rumen fluid solutions reduced the amount of supernatant Ca and Mg at rumen pH, whereas the level of P was not reduced. After adding HCl, a large proportion of the zeolite-bound Ca and Mg was released, increasing supernatant Ca and Mg levels; whereas, HCl addition led to a profound drop in supernatant P in zeolite samples, indicating binding of P. A low level of supernatant P was maintained after HCO3- addition. Neutralization by HCO3- led to a zeolite-induced drop in supernatant Ca and Mg. The reduction in supernatant Ca observed in the present study concurs well with the theoretical rationale of prepartum zeolite supplementation in milk fever prevention. Furthermore, the apparent binding of P by the zeolite may also contribute because of the connection between the calcium and phosphorus homeostasis. The zeolite-induced reduction in supernatant Mg indicates that zeolite supplementation should probably be avoided in Mg-deficient herds unless Mg supplementation is initiated.

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“…The Ca:P ratio was 1.25:1 in those trials. Although an inverse relationship between serum P and serum Ca and Mg concentrations has been reported (Miller et al, 1964-;Cromwell et al, 1970;Doige et al, 1975;Kornegay and Thomas, 1981), no relationship was observed in these trials.…”

Section: Serum Mineralsmentioning

confidence: 73%

Phosphorus in Swine. IV. Influence of Dietary Calcium and Phosphorus and Protein Levels on Feedlot Performance, Serum Minerals, Bone Development and Soundness Scores in Boars

Kornegay

Thomas

Baker

1981

Journal of Animal Science

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The effects of three dietary Ca and P levels and two protein levels on feedlot performance, serum minerals, bone development and soundness scores were evaluated in two trials with 192 crossbred boars. The following factorial arrangement of treatments was used in each trial: (1) 16-14% protein sequence -100% of NRC-recommended Ca and P levels for market barrows and gilts; (2) 16-14% protein -125% Ca and P; (3) 16-14% protein -150% Ca and P; (4) 18-16% protein sequence -100% Ca and P; (5) 18-16% protein -125% Ca and P, and (6) 18-16% protein -150% Ca and P. There were no overall differences in dai'.s g, in, daily feed intake and feed per unit of gain between boars fed diets containing 100, 125 and 150% Ca and P. During the growing phase, daily gain was higher (P<.10) and feed/gain lower (P<.01) for pigs fed 125% Ca and P. Although daily gain favored (P<.01) pigs fed the higher protein sequence during the growing phase, there was no overall difference. Feed/gain was lower (P<.05) during the growing phase for pigs fed the higher protein sequence, but there was no difference during the finishing phase. Dietary Ca and P • protein interactions were not significant. Serum P decreased (P<.01) as dietary Ca and P increased, with no difference in serum Ca and Mg, and there was no effect of tAppreciation is expressed to Charlie Babb and Carl Eure for feeding and caring for the pigs; to Helen protein sequence. Values for metacarpal parameters increased as dietary Ca and P level increased, although the magnitude of the increase was small. Except for length and ash values which were lower for pigs fed the high protein sequence, the values for metacarpal parameters were not influenced by protein sequence. Pad, soundness and foot scores and toe lesions and measurements were not generally influenced by dietary Ca and P or protein level. These results provide limited evidence that feedlot performance and bone development of boars were improved when 125% NRC Ca and P levels were fed, but that overall soundness and foot scores and toe lesions and measurements were unaffected. There was little support for the feeding of higher Ca and P levels. With the exception of feed efficiency during the growing phase, no parameter was improved by the feeding of the higher protein sequence. There appears to be no interaction between dietary Ca and P and protein levels. (

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Phosphorus Requirement of the Baby Pig

Cited by 28 publications

References 15 publications

Influence of Age, Sex and Calcium and Phosphorus Levels on the Mechanical Properties of Various Bones in Swine

Influence of Age, Sex and Calcium and Phosphorus Levels on the Mechanical Properties of Various Bones in Swine

In Vitro Binding Capacity of Zeolite A to Calcium, Phosphorus and Magnesium in Rumen Fluid as Influenced by Changes in pH

Phosphorus in Swine. IV. Influence of Dietary Calcium and Phosphorus and Protein Levels on Feedlot Performance, Serum Minerals, Bone Development and Soundness Scores in Boars

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