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      Egg Shell Quality III: Calcium and phosphorus requirements of commercial Leghorns

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      World's Poultry Science Journal
      CABI Publishing

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          Is Open Access

          The Calcium Requirements of Laying Hens and Effects of Dietary Oyster Shell Upon Egg Shell Quality

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            Osteoporosis in aging rats induced by high phosphorus diets.

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              Influence of dietary calcium and phosphorus on metabolism and production in laying hens.

              1. The effects of different dietary concentrations of calcium (24 to 56-9 g/kg) and phosphorus (4-5 to 14-2 g/kg) on production and some aspects of metabolism were studied in laying hens. 2. Treatments did not affect egg numbers, food consumption, conversion efficiency of food to egg, bodyweight gain or mortality. 3. Increasing dietary calcium (Ca) significantly increased plasma Ca and inorganic phosphorus (P), breaking strength at the radius and egg specific gravity and significantly decreased plasma alkaline phosphatase and egg weight. 4. Increasing dietary phosphorus increased plasma P and decreased egg specific gravity significantly. 5. Plasma Ca, P and alkaline phosphatase and radius breaking strength were suitable indices of the Ca status of the hens.
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                Author and article information

                Journal
                World's Poultry Science Journal
                World's Poultry Science Journal
                CABI Publishing
                0043-9339
                1743-4777
                June 01 1986
                September 23 2019
                June 01 1986
                : 42
                : 2
                : 154-165
                Affiliations
                [1 ] Poultry Science Department, Alabama Agricultural Experiment Station, Auburn University, AL 36849
                Article
                10.1079/WPS19860012
                bddada8f-84fa-4c04-bb24-0ee6352f836b
                © 1986

                https://www.cambridge.org/core/terms

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