Studies on the Phosphorus Requirement of Turkey Breeder Hens with Evidence for Unknown Factors Needed for Embryonic Development and Normal Egg Production

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

doi:10.3382/ps.0401540

Cited by 10 publications

(4 citation statements)

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“…Gutowska and Parkhurst (1942) reported that an excess of calcium (3.95 percent) in the ration of breeder chicken hens lowered the biological value of the ration but did not adversely affect shell-breaking strength, average egg weight, fertility or hatchability, if the diet also contained an adequate level of phosphorus (0.83 to 0.95 percent). Wilcox et al (1961) studied the phosphorus requirement of turkey breeder hens and reported that 0.4 percent phosphorus appeared adequate for egg production but that hatchability was adversely affected. Jensen et al (1963) found that hatchability of turkey eggs was depressed when high calcium levels were fed.…”

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confidence: 98%

The Calcium Requirement of Breeder Turkeys

et al. 1967

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The Calcium Requirement of Breeder Turkeys

et al. 1967

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“…Hatch of fertile eggs was also significantly improved by the addition of inorganic phosphorus to the diet. Wilcox et al (1961) fed a practical-type diet containing 0.34% phosphorus to B.S.W., B.B.B. and B.W.…”

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confidence: 99%

The Effect of Supplemental Phosphorus on the Reproductive Performance of Turkey Hens and the Subsequent Effect Upon the Poults

et al. 1972

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Studies were made on the reproductive performance of Beltsville Small White turkey hens fed a diet containing phosphorus from plant sources only (0.35% P) or supplemented with inorganic phosphorus to provide 1.01% total P, and the effect of such diets on subsequent poult development. Egg production and hatchability of fertile eggs was statistically greater in groups fed the diet containing supplemental P. No significant differences were noted in the hens in regard to fertility, hemoglobin, hematocrit, heart rate, femur bone ash or weight loss as a result of dietary treatments.Poults from both dietary treatments, when fed additional phosphorus (1.01%), grew normally. Poults from both treatments, when fed diets containing phosphorus from plant sources only (0.45% P), were lighter in weight, had greater mortality and developed severe leg troubles, regardless of maternal diet. Tibiotarsus bone ash and the Ca and P of the bone ash of the non-supplemented groups was approximately one-half that found in supplemental groups. There was no apparent carry-over effect of phosphorus from the maternal diet to the poult. PROCEDUREBeltsville Small White (B.S.W.) turkey hens were divided into four groups of fifteen birds each, weighed, placed in individual laying cages and provided with lights to give a 14-hour day. Groups 1 and 3 were fed a diet containing phosphorus from plant sources only and Groups 2 and 4 were fed the same diet with supplemen-792 at

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“…Atkinson et al (1964) reported that the phosphorus requirement of the turkey hen was between 0.6 and 0.8 percent of the diet. However, Wilcox et al (1961) were unable to demonstrate a need for supplemental phosphate in practical breeder diets in studies conducted over a six-year period. The current (1971) National Research Council suggested requirement for turkey breeder hens is 2.25 percent calcium and 0.75 percent phosphorus.…”

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Studies on the Calcium and Phosphorus Requirements of Caged Turkey Breeder Hens

1974

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Studies were conducted to determine the calcium and phosphorus needs of caged turkey breeder hens. Simplified all-vegetable diets were supplemented with ground limestone and a commercial dicalcium phosphate supplement to provide a factorial arrangement of two calcium levels (2.25 and 3.50 percent) and four levels of inorganic phosphorus (0.10, 0.20, 0.30, and 0.40 percent). Results of this trial would indicate that 2.25 percent calcium and 0.30 percent inorganic phosphorus are sufficient to maintain egg production, fertility, hatchability, and egg shell thickness of caged turkey breeder hens.JUNE 16-21.

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Studies on the Phosphorus Requirement of Turkey Breeder Hens with Evidence for Unknown Factors Needed for Embryonic Development and Normal Egg Production

Cited by 10 publications

References 1 publication

The Calcium Requirement of Breeder Turkeys

The Calcium Requirement of Breeder Turkeys

The Effect of Supplemental Phosphorus on the Reproductive Performance of Turkey Hens and the Subsequent Effect Upon the Poults

Studies on the Calcium and Phosphorus Requirements of Caged Turkey Breeder Hens

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