Factors Affecting Manganese Utilization in the Chicken

Wilgus, H. S.; Patton, A. R.

doi:10.1093/jn/18.1.35

Cited by 54 publications

(10 citation statements)

References 27 publications

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“…The increasing proportion of birds with leg disorders in the present study as dietary Fe increased supports the results of Wilgus and Patton (1939). They reported adverse effects of high Fe on the skeletal structure of the chicken.…”

Section: Discussionsupporting

confidence: 89%

Dietary iron and broiler performance

Vahl

Klooster

1987

British Poultry Science

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1. An experiment was conducted with female broilers from 1 to 39 d of age in which the effects of increasing amounts of extra dietary ferrous sulphate on growth performance, some haematological measurements and Fe, Zn and Cu status were studied. A conventional maize-soyabean diet (107 mg Fe/kg) was supplemented with 0, 20, 60, 180, 540 and 1620 mg Fe to provide 6 treatments. 2. Weight gain responses rose to a plateau between 20 and 60 mg added Fe/kg diet, but further additions of Fe increasingly depressed growth. 3. In this study the apparent Fe requirement was 100 mg/kg diet (80 mg from dietary components and 20 mg Fe from supplement). 4. The efficiency of food utilisation decreased linearly, while the proportion of chicks affected by leg weakness increased. 5. In blood, the haemoglobin concentration increased slightly with extra dietary Fe. 6. The iron content of the liver increased with higher dietary Fe supplementation. Furthermore, increased liver Fe content was associated with a higher Zn content in the liver. 7. This study indicated that a maize-soyabean diet containing about 30% more Fe than has generally been accepted to be adequate for healthy broilers was still marginal in Fe concentration.

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Section: Discussionsupporting

confidence: 89%

Dietary iron and broiler performance

Vahl

Klooster

1987

British Poultry Science

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“…Neither of these studies, however, found significant correlations between Ca and perosis. Other investigators, however, have found that perosis can be aggravated by a high Ca diet (Hunter et al, 1931;Payne et al, 1932;Wilgus et al, 1937;Wilgus and Patton, 1939). The present study indicated that feeding a 1% excess of Ca as limestone had no adverse effects on Mn utilization, whereas oyster shell caused only a small reduction of 15%.…”

Section: Discussioncontrasting

confidence: 48%

“…These observations along with the correlation studies of Milby (1933) and Hammond (1936), have placed the responsibility for this Mn antagonism on P. However, other evidence has indicated that the causative effect may not be due to P alone. Hunter et al (1931), Payne et al (1932), Wilgus et al (1937), and Wilgus and Patton (1939) found that perosis can also be aggravated by a high-Ca diet.…”

Section: Introductionmentioning

confidence: 99%

Manganese Utilization in Chicks as Affected by Excess Calcium and Phosphorus Ingestion

Wedekind

Baker

1990

Poultry Science

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Three experiments were conducted to assess Mn utilization in the presence or absence of excess Ca and P from various sources. Supplements were added to a corn-soybean meal diet containing 1% Ca, .7% (.5% available) P and 37 mg of Mn per kg. Three percentages of supplemental Mn from MnSO4.H2O (0, 500, and 1,000 mg of Mn per kg) were used to construct a standard curve of tibia Mn regressed on the 14-day supplemental Mn intake (r averaged .96 for the three experiments). From this, the tibia Mn values obtained from chicks fed diets containing 1,000 mg of supplemental Mn per kg of diet plus 1% added Ca from various sources, were used to calculate bioavailable Mn via standard-curve methodology. In Experiment 1, analytical-grade (AG) CaCO3, feed-grade (FG) oyster shell and FG dicalcium phosphate decreased Mn utilization by 20, 15 and 53%, respectively, but FG limestone was without effect. Experiments 2 and 3 were conducted to determine how different combinations of Ca and P, as well as different cationic forms of P, affected Mn utilization. The results from these experiments indicated that feeding .88% of excess inorganic P, regardless of source and whether fed alone or in combination with excess Ca, reduced Mn utilization by 50 to 65%. Among the Ca sources, only oyster shell caused a reduction in Mn utilization. It is evident that excess dietary P is more antagonistic to Mn than is excess Ca.

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“…The availability value for SBM is higher than 61.2% reported by Guenter and Sell (1974) Gallup and Norris (1939 a,b) and Wilgus and Patton (1939) reported that birds have a high requirement for manganese due to poor absorption of the mineral in the diet. Availability of magnesium in SBM, CSM, RSM and PKM was 77.4, 74.5, •61.1 and 56.4%, respectively.…”

Section: Calcium Results Indicate That Calcium Ismentioning

confidence: 58%

A Method for Estimating the Mineral Availability in Feedstuffs

1976

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Chicks were utilized in a study to estimate mineral (Ca, P, Mg, Mn, Zn and Cu) availability of palm kernel meal, soybean meal, cottonseed meal and rapeseed meal. The method used was previously utilized for amino acid availability studies and was modified for the purpose of evaluating the utilization of minerals from feedstuffs. This procedure is rapid, less expensive than other biological procedures and has the potential of being utilized simultaneously for determining available amino acids and minerals.Results of this study indicate that calcium is well utilized from PKM (68.8%), SBM (85.6%), CSM (64.6%) and RSM (71.1%). The average availability of phosphorus (78%) was high for the feedstuffs tested. Magnesium was well utilized in four ingredients with an average of 67.5%. Manganese, zinc, and copper showed greater variation among feedstuffs tested. The range in availability was 45.7% to 76.3% for manganese, 13.9% to 66.5% for zinc and 42.2% to 62.2% for copper.

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Factors Affecting Manganese Utilization in the Chicken

Cited by 54 publications

References 27 publications

Dietary iron and broiler performance

Dietary iron and broiler performance

Manganese Utilization in Chicks as Affected by Excess Calcium and Phosphorus Ingestion

A Method for Estimating the Mineral Availability in Feedstuffs

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