Soft Phosphate in Chick Rations

Gardiner, E. E.; Parker, H. E.; Carrick, C. W.

doi:10.3382/ps.0380721

Cited by 11 publications

(3 citation statements)

References 10 publications

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“…The depression in growth and food intake observed in CMM and HFRP groups may be attributable to toxic effects of high F content (622 and 1383 mg/kg, respectively) in these diets (Suttie, 1968). The F levels in CMM and HFRP diets (622 and 1383 mg/kg, respectively) were much higher than the tolerance level (500 mg/kg diet) for broilers (Gardiner et al, 1959;Camps, 1985). The reduced food efficiency and poor retention of P in broilers given CMM or HFRP (Table 4) may have been responsible for the growth depression in these groups.…”

Section: Broiler Experimentsmentioning

confidence: 89%

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).

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Section: Broiler Experimentsmentioning

confidence: 89%

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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“…On the other hand, the average weight of the colloidal phosphate group was not significantly less than that of the group fed bone meal. Gardiner et al (1959) reported that the lower growth rate in chicks fed soft phosphate was not due to the fluorine or clay in the product. The authors concluded that only a portion of phosphorus in soft phosphate was utilized by the chick.…”

mentioning

confidence: 96%

Utilization of Phosphorus from Defluorinated and Colloidal Phosphate by Chicks and Laying Hens

et al. 1960

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“…For this reason, differences in the biological availability of calcium and phosphorus in various dietary supplements have led researchers to inves-1 A portion of a dissertation presented by Herbert J. Eoff in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Poultry tigate their use as broad-spectrum antibiotic potentiators in poultry nutrition. The phosphorus in colloidal phosphate has been shown to have limited biological availability for poultry (Baruah et al, 1960;Gardiner et al, 1959;and Motzok et al, 1957). Evidence is available to indicate the efficacy of dietary colloidal phosphate as an antibiotic potentiator.…”

mentioning

confidence: 99%

Effect of Source of Calcium and Phosphorus on Antibiotic Potentiation and Egg Production of Caged Layers

et al. 1962

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Soft Phosphate in Chick Rations

Cited by 11 publications

References 10 publications

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

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

Utilization of Phosphorus from Defluorinated and Colloidal Phosphate by Chicks and Laying Hens

Effect of Source of Calcium and Phosphorus on Antibiotic Potentiation and Egg Production of Caged Layers

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