The Relationship of Calcium-Phosphorus Ratios to the Utilization of Plant and Inorganic Phosphorus by the Chick

Vandepopuliere, J. M.; Ammerman, C. B.; Harms, R. H.

doi:10.3382/ps.0400951

Cited by 46 publications

(17 citation statements)

References 12 publications

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“…The data reported herein suggest conclusions regarding the calcium requirement that are in substantial agreement with the earlier reports of Bethke et al (1929b) and Hart et al (1930), the conclusions reached in the reviews of Mitchell and McClure (1937) and Branion (1938) and the calcium requirement indicated by Vanderpopuliere et al (1961).…”

Section: Resultssupporting

confidence: 91%

“…In view of the conflicting reports on the utilization of phytin phosphorus (Gillis, et al, 1957;Ashton et al, 1960;Harms, 1960;Vanderpopuliere et al, 1961) the data relative to phosphorus requirement have been reported in terms of total phosphorus. The level of 0.60% total phosphorus which is indicated as adequate from 0 to 4 weeks, and the level of 0.50% total phosphorus which is indicated as adequate for the periods 6 to 8, and 0 to 8 weeks, represent a level of 0.19% and 0.09% added inorganic phosphorus, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…A review of the more pertinent literature by Lillie et al (1964) indicates that the range of discordant values is being narrowed to some extent and that the calcium level recommended by the National Research Council is higher than that which many investigators found to be adequate for optimum growth. The majority of the recent investigations (Formica et al, 1961(Formica et al, , 1962Vanderpopuliere, 1961;Waldroup et al 1962a, b;Simco and Stephenson, 1961;Lillie et al, 1964) have been aimed at refinement of the requirement of the growing chick in the light of current nutritional knowledge. Such was the motive for the experiment reported herein.…”

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confidence: 99%

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Calcium and Phosphorus Requirements of Broiler Chickens

Twining¹,

Lillie²,

Robel³

et al. 1965

Poultry Science

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A FTER more than 35 years of investi->• gation, there is considerable disagreement in the literature as to the levels of calcium and phosphorus required for optimum performance of growing chickens. A review of the more pertinent literature by Lillie et al. (1964) indicates that the range of discordant values is being narrowed to some extent and that the calcium level recommended by the National Research Council is higher than that which many investigators found to be adequate for optimum growth. The majority of the recent investigations (Formica et al., 1961(Formica et al., , 1962Vanderpopuliere, 1961; Waldroup et al. 1962a, b;Simco and Stephenson, 1961;Lillie et al., 1964) have been aimed at refinement of the requirement of the growing chick in the light of current nutritional knowledge. Such was the motive for the experiment reported herein. EXPERIMENTAL A 5X4X2 factorial arrangement was employed in the design of the experiment. The three-factor design included five levels of total phosphorus (0.50, 0.55,0.60, 0.65, 0.70%), four levels of calcium (0,50, 0.60, 0.70, 0.80%) and two sexes (males and females reared separately). Sixty-four hundred sexed day-old VantressX Arbor Acres chicks were randomly distributed within sex into 20 groups of males and 20 groups of females. The 40 groups of 160 birds each were placed in individual floor

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Calcium and Phosphorus Requirements of Broiler Chickens

Twining¹,

Lillie²,

Robel³

et al. 1965

Poultry Science

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“…A high level of calcium or Ca: P ratio of 2:1 in diet impairs the digestion of phytate because of formation of an insoluble penta-calcium phytate complex in intestine, which is resistant to phytase action (Nelson, 1967). Vandepepopuliere et al (1961) found that chicks fed a diet with a Ca: P ratio of 1:1 performed better than those fed a diet with the ratio of 2:1. Therefore, dietary calcium concentration supplied at a particular calcium: phosphorus ratio can be an important determinant of the phytase efficacy.…”

Section: Dietary Calcium and Phosphorus Levelmentioning

confidence: 98%

Significance of phytic acid and supplemental phytase in chicken nutrition: a review

Singh¹

2008

World's Poultry Science Journal

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Phytic acid is an anti-nutritional constituent of plant derived feeds. As a reactive anion, it forms a wide variety of insoluble salts with minerals including phosphorus, calcium, zinc, magnesium and copper. Phytic acid is also known to form complexes with protein and proteolytic enzymes (pepsin and trypsin). Because of the lack of endogenous phytase enzymes that hydrolyze phytic acid; phosphorus, calcium, protein and other phytic acid bound nutrients are less available to poultry. Commercially-available microbial phytase has great nutritional significance and ecological importance. Poultry diets supplemented with microbial phytase result in improved growth performance and increased digestibility and availability of phytate bound phosphorous, calcium, zinc and copper. Microbial phytase supplementation has also been shown to increase ileal digestibility of crude protein and amino acids. The efficacy of supplemental microbial phytase depends on its rate of inclusion, dietary calcium and phosphorus ratio, vitamin D 3 , nature of diet, age and genotype of birds. Thus, microbial phytase can be used to exploit the inherent nutritional potential of feedstuffs for more economic and environmentallyfriendly poultry production.

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“…In certain assays constant calcium: phosphorus ratios were employed (Creech et al, 19S6;Nelson and Peeler, 1961), while in others, constant calcium levels of 1 percent (Ammerman et al, 1960) or 1.2 percent (Gardiner et al, 1959) were used. Vandepopuliere et al (1961) found that it was essential to consider both phosphorus level and Ca:P ratio when determining phosphorus availability. Nelson and Peeler (1964) enumerated problems involved in the development of a biological assay for feed phosphates.…”

mentioning

confidence: 98%