Lack of Effect of Sodium Bicarbonate on Shell Characteristics

Cox, Allan C.; Balloun, S. L.

doi:10.3382/ps.0471370

Cited by 22 publications

(8 citation statements)

References 3 publications

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“…Several investigators reported greater shell thickness or shell strength if part of the dietary Na was provided as NaHC0 3 rather than as NaCl (Frank and Burger, 1965;Howes, 1966;and Vogt, 1974). Other workers were unable to demonstrate these beneficial effects (Pepper et al, 1968;Cox and Balloun, 1968;Ernsts al., 1975;Odiba et al, 1981). Mongin (1980) reported that significant improvements in shell quality were detected in most cases where the additions of NaHC0 3 increased the dietary Na + K-Cl values from 160 to 180 to 200 or more meq per kilogram of diet.…”

Section: Resultsmentioning

confidence: 92%

Eggshell Quality as Influenced by Sodium Bicarbonate, Calcium Source, and Photoperiod

Makled

Charles

1987

Poultry Science

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The effects of Ca source (limestone or a mixture of one-third limestone and two-thirds oyster shell), NaHCO3 (0 or .5%) and feeding photoperiod (16 or 24 hr) were studied in a 16-week experiment involving 240 Hy-Line W-36 Leghorn hens, 25 weeks of age. Neither egg production (percent hen-day and egg mass, kg egg/bird per 16 weeks) nor feed conversion ratio (kg feed per kg egg) were significantly (P greater than .05) affected by dietary treatment or photoperiod. However, extending the photoperiod to 24 hr significantly (P less than .05) increased feed consumption with a consequent increase in egg weight (P less than .01). Feeding oyster shell in combination with limestone significantly (P less than .05) improved specific gravity of eggs, whereas dietary NaHCO3 significantly (P less than .01) improved elasticity of the egg shell as measured by deformation. Eggshell quality was improved by increasing the photoperiod to 24 hr and was most pronounced when hens were fed diets supplemented with .5% NaHCO3 and limestone as the only source of Ca.

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Section: Resultsmentioning

confidence: 92%

Eggshell Quality as Influenced by Sodium Bicarbonate, Calcium Source, and Photoperiod

Makled

Charles

1987

Poultry Science

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“…Many researchers have agreed that feeding sodium bicarbonate improves egg shell quality (El-Boushy, 1966;Frank and Burger, 1965;Mongin, 1970), although some other investigators were not able to obtain similar results (Pepper et al, 1968;Cox and Balloun, 1968;Ferguson et al, 1974). Hall and Helbacka (1959) suggested that deposition of calcium carbonate in the egg shell was dependent upon blood pH and was depressed when blood pH was lowered ether by respiratory acidosis or by feeding ammonium chloride.…”

Section: Introductionmentioning

confidence: 90%

Dietary Interaction of Phosphorus with Sodium from Either Chloride or Bicarbonate Affects Laying Hen Performance

Choi

Han

1983

Poultry Science

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Experimental diets consisting of two levels of total phosphorus (.30 and .75%) and three different treatments of supplemental sodium (.35% NaCl, 1.40% NaCl, and .35% NaCl plus 1.50% NaHCO3) were fed in a 2 X 3 factorial arrangement to laying hens for 16 weeks. The latter two treatments of sodium were designed to supply the same level of sodium (.55%) from different chemical forms. Hens fed .30% phosphorus laid significantly (P less than .01) less eggs than those fed .75% phosphorus. A highly significant (P less than .01) interaction was found between phosphorus and sodium treatments. The high level of sodium from either chloride or bicarbonate decreased egg production at the lower level of phosphorus and increased it when the higher level of phosphorus was fed. Sodium bicarbonate affected egg production more strongly than sodium chloride did. There were no significant treatment effects on egg weight and egg shell weight. Addition of sodium bicarbonate to the low phosphorus diet significantly (P less than .05) decreased feed consumption of the hen. Supplemental sodium bicarbonate with either level of dietary phosphorus significantly (P less than .05) increased percent nitrogen retention of the hen, but excessive sodium chloride did not.

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“…Attempts to increase shell thickness through feeding of sodium bicarbonate have had variable results (77)(78)(79), although metabolic alkalosis should promote shell formation by increasing the intracellular concentration of hydroxyl and bicarbonate ions (12). The variable results have been attributed to differences in dietary chloride (80), but further investigation is needed.…”

Section: Alterations Of Acid-base Balancementioning

confidence: 97%