Phosphate Supplements of Different Fluorine Content as Sources of Phosphorous for Chickens ,

Gerry, R. W.; Carrick, C. W.; Roberts, Roy E.; Hauge, S. M.

doi:10.3382/ps.0260323

Cited by 23 publications

(9 citation statements)

References 8 publications

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“…These results are somewhat in variance with those reported by Gerry et al (1947), whose work indicated that birds fed rock phosphate and colloidal phosphate had a higher percentage of bone ash than birds fed bone meal, even though growth was depressed. The Curacao Island phosphate is shown to be as available as the phosphate from bone meal, defluorinated phosphate, or dicalcium phosphate.…”

Section: Resultssupporting

confidence: 71%

Availability of Phosphorus from Various Phosphate Materials for Chicks

Miller

Joukovsky

1953

Poultry Science

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Section: Resultssupporting

confidence: 71%

Availability of Phosphorus from Various Phosphate Materials for Chicks

Miller

Joukovsky

1953

Poultry Science

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“…Steenbock and Bunkfeldt (1951) arrived at a similar conclusion in work with rats. This is also borne out in chicks by the observation of Gerry et al (1947), Miller and Joukovsky (1953), Grau and Zweigart (1953) and others, that certain phosphorus supplements may improve bone ash without benefiting growth. Experiment 2.…”

mentioning

confidence: 84%

Effect of Aureomycin on the Calcium and Phosphorus Requirements of Chicks and Poults

Lindblad¹,

Slinger²,

Motzok³

1954

Poultry Science

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“…The reduced performance of broilers due to F toxicity was significant only during the starter period (up to 21 d of age) but the toxicity affect was nullified by feeding the F up to 42 d of age . There was a tendency for chicken's to overcome the detrimental effects of F as they grew older (Gerry et al, 1947). Though food intake and body weight gain were significantly reduced in HFRP fed broilers, the depression in weight gain was not in proportion to the decreased food intake.…”

Section: Broiler Experimentsmentioning

confidence: 97%

“…These alternative P sources also contain fluorine (F) at varied concentrations depending on the geographic source (Lall and Prasad, 1989). The raw rock phosphate is also used in different proportions in CMM preparations, and so the CMM also contain considerable concentrations of F. Since the utilisation of P from these sources also depends on the concentration of F (Gerry et al, 1947;Chang et al, 1977), these P sources were tested for their utilisation in relation to F content both in broiler and layer diets.…”

Section: Introductionmentioning

confidence: 99%

Utilisation of different phosphorus sources in relation to their fluorine content for broilers and layers

Rao¹,

Reddy²

2001

British Poultry Science

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1. The relative utilisation of different phosphorus sources in relation to their fluorine (F) content was studied in commercial broilers (5 to 40 d) and White Leghorn layers (252 to 364 d). The phosphorus (P) sources tested were bonemeal (BM), low fluorine (LFRP) and high fluorine (HFRP) rock phosphates and a commercial mineral mixture (CMM). The P sources were incorporated in broiler and layer diets by replacing dicalcium phosphate (DCP) on a P basis. 2. The F contents of diets based on BM, LFRP, CMM and HFRP were 53, 365, 622 and 1383 mg/kg in the broiler experiment and 34, 242, 437 and 967 mg/kg in the layer experiment, respectively. F was not detected in DCP based diets. 3. In broilers, body weight gain, food intake, gain: food, P retention and serum inorganic P content on P sources (BM and LFRP) containing F up to 365 mg/kg diet were similar to those on DCP. Body weight gain, food intake, serum calcium and inorganic P contents and retention of P were depressed in groups fed on CMM and HFRP, which may have been due to the toxic effects of F (622 and 1383 mg/kg) present in diets based on these P sources. 4. Bone ash and its P content were not affected by feeding diets containing F up to 1383 mg/kg from various P sources. The amount of F deposited in tibia increased significantly with increases in dietary F concentration. 5. In layers, egg production and food intake were not affected by F up to 437 mg/kg in diets containing BM, LFRP or CMM as the sole source of supplemental P. Egg production and food intake were depressed significantly in layers given the diet containing 967 mg F/kg from HFRP. 6. Egg mass: food, egg weight, shell quality (shell thickness and shell weight) and serum calcium and inorganic P levels were not affected by F up to 967 mg/kg in diets containing different P sources. 7. It may be concluded that the performance of broilers and layers was not affected by feeding various P supplements with dietary levels of F up to 365 and 437 mg/kg, respectively. The reduced performance in broilers and layers observed with some of the P sources may have been due to poor availability of P and/or toxic effects of F (622 and 967 mg/kg, respectively).

show abstract

Phosphate Supplements of Different Fluorine Content as Sources of Phosphorous for Chickens ,

Cited by 23 publications

References 8 publications

Availability of Phosphorus from Various Phosphate Materials for Chicks

Availability of Phosphorus from Various Phosphate Materials for Chicks

Effect of Aureomycin on the Calcium and Phosphorus Requirements of Chicks and Poults

Utilisation of different phosphorus sources in relation to their fluorine content for broilers and layers

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