The Availability of Phosphorus from Different Sources for Poults Fed Purified Diets

Wilcox, R. A.; Carlson, C. W.; Kohlmeyer, W.; Gastler, G. F.

doi:10.3382/ps.0331010

Cited by 30 publications

(7 citation statements)

References 7 publications

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“…Relative availabilities of 92% or less have been reported by Edwards (1968), Gillis et al (1957), and Dilworth and Day (1964). Whereas variable results have been obtained by Nelson and Walker (1964) (81-105%) using tricalcium phosphate as a standard, Wilcox et al (1954) (75-101%) using dibasic calcium phosphate as a standard and Motzok et al (1956) also using tricalcium phosphate as standard. More recently, Twining and Twining (1972) reported that DFP was equal to dicalcium phosphate dihydrate when fed at optimum calcium and phosphorus levels (.45% Avg.…”

Section: Introductionmentioning

confidence: 98%

Phosphorus Availability

1978

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Four experiments were conducted with 0 to 3-and 4 to 7-week-old broiler chicks to study the effects of age and vitamin D form on the phosphorus availability in several samples of defluorinated phosphate (DFP). All birds were housed in raised, wire floored cages. A corn-soybean meal ration was used as the basal diet throughout the experiment. Monobasic sodium phosphate was used as the standard (assumed to be 100% available) and the calcium/phosphorus ratio was maintained at 1.25 to 1. The youngest age group (0 to 3 weeks) appeared to utilize the phosphorus from DFP virtually 100%, but the older birds could utilize only 82-90% of this phosphorus. Approximate calculations indicate that 25-OH-D 3 and 1 a-OH-D, are 2 to 2.5 and 4.5 times as active as pure D 3 (cholecalciferol) on a weight basis, respectively. The values obtained for phosphorus availability were relatively consistent whether the assessment was based on growth, toe ash, or biological index, although toe ash was generally the most reproducible parameter used. Phosphorus availability from most current commercial sources of DFP is quite high even though feed grade sources for poultry vary considerably in particle size.

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Section: Introductionmentioning

confidence: 98%

Phosphorus Availability

1978

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“…An early report, Wilcox et al (1954), evaluated the availability of phosphorus in supplements for turkey poults using a purified basal assay diet and dibasic calcium phosphate (U.S.P.) as the reference phosphorus source.…”

Section: Introductionmentioning

confidence: 99%

“…as the reference phosphorus source. Wilcox et al (1955) conducted a similar study using a practical basal diet and determined that monobasic calcium phosphate, steamed bone meal, two dicalcium phosphates, and one defluorinated phosphate showed excellent availabilities; two dicalcium phosphates and three defluorinated phosphates were intermediate in availability; one dicalcium phosphate and one defluorinated phosphate were of low availability; and two colloidal phosphates were of poor availability. 13,474,Minnesota Agricultural Experiment Station. imported rock phosphates and three colloidal phosphates were poorly available sources of phosphorus.…”

Section: Introductionmentioning

confidence: 99%

Bioavailability of Phosphorus in Commercial Phosphate Supplements for Turkeys

et al. 1984

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Forty-seven commercial phosphorus supplements were obtained from feed manufacturers and subjected to biological phosphorus availability assay using the turkey poult. Bone ash was the response criterion. Compared to a reference source of commercial mono/ dicalcium phosphate (assigned 100), 7 other mono/ dicalcium phosphates averaged 97.1 (range 88.6 to 110.0), 20 dicalcium phosphate sources averaged 90.6 (76.3 to 104.8), and 20 defluorinated phosphate sources averaged 78.4% (68.6 to 89.6) availabilities. Combining equal parts of all sources of each type of phosphorus supplement and using purified grade calcium phosphate monobasic monohydrate as a defined standard, the commercial mono/ dicalcium phosphates, dicalcium phosphates, and defluorinated phosphates averaged (with 95% confidence limits) 93.6 +/- 7.6, 88.3 +/- 8.2, and 70.2 +/- 7.2% phosphorus availability in a slope ratio bioassay. Calculating the requirement intercepts utilizing the blended phosphorus supplements indicated apparent requirements using mono/ dicalcium phosphate, dicalcium phosphate, and defluorinated phosphate of .74, .76, and .83% total phosphorus in the diet, respectively. Considering 1) the variability in availability of the sources, 2) variation in feed mixing, 3) the National Research Council requirement of .80%, and 4) that newly hatched poults are completely dependent on one batch of prestarter feed during 0 to 10 days of life, it is suggested that in certain instances field rickets could result from deficiency of dietary phosphorus.

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“…2. However, Wilcox et al (1954) reported that the P in TCP was poorly utilized by the turkey poults. The use of TCP for young broilers decreased the P retention.…”

Section: Discussionmentioning

confidence: 99%

Comparison of how different feed phosphates affect performance, bone mineralization and phosphorus retention in broilers

Hamdi

Solà-Oriol

Franco-Rosselló

et al. 2017

Span. j. agric. res.

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The objective of this work was to evaluate the comparative P bio-avalability of different sources of phosphate based on their effects on animal performance, bones mineralization and mineral retention in broilers. To achieve this goal, two experiments were conducted. In Experiment 1, twenty diets were prepared including five different phosphorus sources, either mono-calcium phosphate (MCP) or 4 different batches of di-calcium phosphate, to supplement non phytic P (NPP) levels at 3.0, 3.5, 4.0 and 4.5 g/kg in the diets. In Experiment 2, three treatments were used: the low MCP diet was deficient in NPP (3.1 g/kg for the starter phase and 2.8 g/kg for the grower phase); the high MCP diet and the high TCP (tri-calcium phosphate) diet included adequate levels of NPP (4.4-4.7 g/kg for the starter phase and 4.2-4.3 g/kg for the grower phase). Phytase was not added to experimental diets. Results of Exp. 1 indicated that an increase of NPP in the diet from 3.0 to 4.0 g/ kg increased weight gain and feed intake between d 1 and d 21 (Trial 1). Alternatively, tibia weight and ash percentage at d 21 responded up to the level of 4.5 g/kg and showed significant difference with birds of the 4.0 g/kg NPP group. In Trial 2, chickens fed with the high MCP and TCP had improved growth performances and bone mineralization. No differences were observed on the P availability among different mineral P sources. A level of 4.5 g/kg, NPP is recommended when phytase is not included to maximize both performance and bone mineralization in broiler chickens up to d 21.Additional keywords: mineralization; digestibility; calcium; phosphorus sources. Abbreviation used: BW (body weight); CP (crude protein); DCP (di-calcium phosphate); DM (dry matter); FI (feed intake); G: F (gain feed ratio); MCP (mono-calcium phosphate); ME (metabolic energy); NPP (non phytic phosphorus); TCP (tri-calcium phosphate); WG (weight gain).

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The Availability of Phosphorus from Different Sources for Poults Fed Purified Diets

Cited by 30 publications

References 7 publications

Phosphorus Availability

Phosphorus Availability

Bioavailability of Phosphorus in Commercial Phosphate Supplements for Turkeys

Comparison of how different feed phosphates affect performance, bone mineralization and phosphorus retention in broilers

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