Interaction between dietary protein and magnesium level in tilapia (Oreochromis niloticus)

Dabrowska, Henryka; Meyer-Burgdorff, K.-H.; Günther, Katharina

doi:10.1016/0044-8486(89)90081-1

Cited by 47 publications

(41 citation statements)

References 16 publications

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“…The bone magnesium response to increasing dietary Mg levels, observed in the present experiment, has been also found in other fish (Gatlin et al 1982). Carp accumulated more magnesium in their carcass than did tilapia (in groups fed 0.6g Mg kg the deposition rate of magnesium was about 60°'0 lower, Dabrowska et al 1989) in the similar experimental conditions.…”

Section: Discussionsupporting

confidence: 85%

“…In the present trial on carp, the sign of hypercalcinosis was observed when considering the whole body calcium level of Mg-deficient fish (Table 4). This finding corroborate to sign of calcinosis of the soft tissues of rainbow trout and tilapia fed Mg-deficient diets (Knox et al 1981;Dabrowska et al 1989). The lack o1" such interaction among these minerals is observed m bone level, where Mg-deficiency did not lead to the accumulation of excess of calcium c, Table 5; see also Gatlin et al 1982).…”

Section: Discussionsupporting

confidence: 67%

“…The weight gain of tilapia fed diet supplemented up to 3 g Mg kg-I was severely diminished in case of low-protein level and only slightly decreased in fish offered diet high in protein content (Dabrowska et aL 1989). The present results showed that, under the similar experimental conditions, growth of carp on this "high" Mg level (diets 4 and 8) was not restricted but, contrary, increased in comparison to fish fed> diets supplemented with 0.6-1.1 g Mg kg I (Table 3; Fig.…”

Section: Discussionmentioning

confidence: 94%

“…1982). The possible interaction among minerals, Ca:P:Mg, can be observed due to their dietary levels, and in fish which can absorb calcium and magnesium from water (Perry and Flik 1988;Dabrowska et al 1989;Frenzel and Pfeffer 1982) these interactions become far more complex. In the present trial on carp, the sign of hypercalcinosis was observed when considering the whole body calcium level of Mg-deficient fish (Table 4).…”

Section: Discussionmentioning

confidence: 99%

“…Eight semi-purified casein-based diets were prepared as described previously (Dabrowska et al 1989). The diets were formulated to contain two levels of protein, 25 and 44%.…”

Section: Experimental Design and Fish Maintenancementioning

confidence: 99%

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Magnesium status in freshwater fish, common carp (Cyprinus carpio, L.) and the dietary protein-magnesium interaction

Dabrowska

Meyer-Burgdorff

Günther

1991

Fish Physiol Biochem

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Common carp juveniles were fed for 9 weeks one of the eight semipurified diets containing graded levels of magnesium, 0.08, 0.6, 1.1, 3, 2 g Mg kg(-1) and 25 or 44% protein.Fish growth and feed utilization were significantly affected by both Mg and protein levels in the diets. Significant interaction between these two studied variables existed in relation to the fish performance as well as to mean deposition rate of several minerals in common carp body. The fish fed diets containing 0.08 g Mg kg(-1) had reduced growth and developed deficiency signs such as muscle flaccidity and skin hemorrhages.Results indicated that a minimum Mg level of 0.6 g Mg kg(-1) was required to elevate plasma and bone magnesium content and to reduce the whole body Ca concentration (hypercalcinosis symptom). Further increase of dietary Mg up to 3.2 g Mg kg(-1) improved growth rate of fish insignificantly, but the deposition rate of dietary Mg fell to as low as 7.4 and 10.7 percent in low- and high-protein diet fed fish, respectively. In Mg-deficient fish, considerable amount of magnesium was absorbed via extra-oral routes, however, this way of the covering magnesium need becomes insufficient in fast growing fish.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

“…Eight semi-purified casein-based diets were prepared as described previously (Dabrowska et al 1989). The diets were formulated to contain two levels of protein, 25 and 44%.…”

Section: Experimental Design and Fish Maintenancementioning

confidence: 99%

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