Effekt einer Zulage an mikrobieller Phytase zu einer Mais‐Soja‐Diät auf die scheinbare Absorption von Mg, Fe, Cu, Mn und Zn sowie auf Parameter des Zinkstatus beim Ferkel

Pallauf, J.; Höhler, D.; Rimbach, Gerald

doi:10.1111/j.1439-0396.1992.tb00612.x

Cited by 59 publications

(14 citation statements)

References 12 publications

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“…However, as an effect of phytase the incorporation of zinc into the Phalanx prima IV increased significantly by about 30%. As reported earlier with pigs (Pallauf et al, 1992(Pallauf et al, , 1994Lei et al, 1993;Adeola et al, 1995;Walz and Pallauf, 2002) zinc appears to be the trace element whose bioavailability and incorporation into bones is most enhanced by microbial phytase. Thus, from an economic and environmental standpoint, in the case of phytase supplementation, over-fortification of practical diets with inorganic zinc can be reduced.…”

Section: Discussionmentioning

confidence: 56%

“…Thus, an adequate addition of phytase to a diet high in phytate but low in available P guarantees mineral deposition in the bones similar to that of pigs fed diets with sufficient phosphorus supplementation. Concerning the trace elements, iron may not be effectively released from the phytate complex by phytase (Pallauf et al, 1992;Pippig, 1996). However, as an effect of phytase the incorporation of zinc into the Phalanx prima IV increased significantly by about 30%.…”

Section: Discussionmentioning

confidence: 98%

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the effect of the combination of microbial phytase and amino acid supplementation of diets for finishing pigs on p and n excretion and carcass quality

Walz¹,

Pallauf²

2003

Archives of Animal Nutrition

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The objective of this study was to evaluate the effect of a combined low-protein, low-phosphorus diet supplemented with limiting amino acids and microbial phytase on performance, nutrient utilization and carcass characteristics of late-finishing barrows. 4 x 8 crossbreed barrows were continuously housed in metabolism cages from 70-110 kg BW and were fed diets, either conventional (A) or protein reduced (B) or protein and phosphorus reduced diets (C) based on barley, maize and soybean meal. Diet A (positive control) contained in air dry matter 13% and 10% CP as well as 0.49% and 0.42% P at growth phases I (70-100 kg BW) or 11 (100-110 kg BW), respectively. Diet B was low in CP (11.3%, 8.4%), diet C low in CP and low in P (CP: as B, P: 0.36%, 0.30%). To diet B the limiting amino acids lysine, methionine, threonine and trypthophan were added to meet the levels in diet A. To diet C the limiting amino acids and 800 FTU/kg Aspergillus-phytase were supplemented. At the end of the balance periods the barrows were slaughtered, the carcasses scored and loin chops, ham and Phalanx prima IV were analysed for nutrients and minerals. The CP or P reduction in diets B and C did not generally negatively affect growth, feed efficiency, absolute nitrogen retention or overall carcass performances of the pigs. With the low CP diets B and C, N excretion per unit BWG was decreased by about 23%. The addition of microbial phytase (diet C) increased apparent total tract digestibility of P by about 20%. In spite of 30% reduction of P intake (diet C), the absolute P retention related to 1 kg BW did not differ between treatments. Thus, phytase supplementation in diet C reduced P excretion per unit BWG by about 33%. Phytase raised apparent digestibility of Zn by about 20% but not Ca digestibility. Generally the carcass traits and meat characteristics were not affected by any of the diet strategies. Mineralization of the Phalanx prima IV was also similar in all treatment groups. However, phytase supplementation led to significantly increased zinc concentration in bones (25%). In contrast, Fe incorporation into the Phalanx prima IV was not affected. In general, the feeding regimen introduced in this experiment offers substantial benefits in maintaining a sustainable environmental-friendly pork production even at the stage of late-finishing barrows.

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Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 98%

the effect of the combination of microbial phytase and amino acid supplementation of diets for finishing pigs on p and n excretion and carcass quality

Walz¹,

Pallauf²

2003

Archives of Animal Nutrition

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“…The addition of phytase not only cleaves inorganic orthophosphate from phytate but also releases chelated cations, such as Cu and Zn, making them more available (Lawrence et al, 1995). Pallauf et al (1992) reported that Cu absorption tended to be improved in pigs when microbial phytase was added to a corn-soybean meal diet. He et al (2006) indicated competitive interactions between phosphate and phytate with a specific metal ion and the conversion (or hydrolysis) of metal phytate to metal phosphate under various conditions.…”

Section: Coppermentioning

confidence: 99%

Factors Affecting Arsenic and Copper Runoff from Fields Fertilized with Poultry Litter

DeLaune¹,

Moore

2014

J. Environ. Qual.

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Arsenic (As) and copper (Cu) runoff from fields fertilized with poultry litter has received increasing attention in recent years, although it is not known if heavy metal runoff from poultry litter poses a significant threat to the environment. The objective of this study was to determine the main factors affecting As and Cu concentrations in runoff water from pastures receiving poultry litter applications. Rainfall simulation studies were conducted to determine the effects of the following treatments on metal runoff: (i) aluminum sulfate (alum) additions, (ii) diet modification using phytase or high available phosphorus corn, (iii) fertilizer type, (iv) poultry litter application rate, and (v) time until the first runoff event occurs after poultry litter application. Results showed that alum additions to poultry litter significantly decreased As and Cu concentrations in runoff water. Copper concentrations were highest in runoff from poultry litter from birds fed phytase diets compared with other diets; however, this effect may have been a result of wet storage conditions rather than diet. Triple superphosphate applications resulted in the lowest heavy metal concentrations in runoff water among all fertilizer treatments, while normal poultry litter resulted in the highest concentrations. Arsenic and Cu concentrations increased in runoff water as poultry litter application rates increased and decreased with increasing time until the first runoff event. These data indicate that adding alum to poultry litter, a cost-effective best management practice, which also results in lower P runoff and ammonia emissions, may also be an effective tool in reducing metal runoff.

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“…These results have been validated by Simons et al (1990) and Perney et al (1993) for poultry and by Jongbloed et al (1992), Cromwell et al (1993), Lei et al (1993a,b,c), and Mroz et al (1994) for pigs. Phytase also has been shown to increase the availability and retention of Ca (Nasi, 1990;Simons et al, 1990;Young et al, 1993) and improve the absorption of Mg, Cu, Fe, and Zn (Nasi, 1990;Pallauf et al, 1992;Lei et al, 1993a). The objective of this experiment was to determine the influence of dietary phytase on the utilization of Ca, P, Zn, Mn, Mg, and Cu in diets supplemented with 0 or 100 mg of Zn per kilogram.…”

Section: Introductionmentioning

confidence: 99%

Phytase-induced changes in mineral utilization in zinc-supplemented diets for pigs3

Adeola

Lawrence

Sutton

et al. 1995

Journal of Animal Science

146

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Forty-eight pigs (barrows:gilts, 1:1) with an average initial weight of 9.4 kg were used in a 2 x 2 factorial experiment to determine the influence of dietary phytase (0 or 1,500 phytase units/kg) and zinc (0 or 100 mg/kg) supplementation of a corn-soybean meal diet on the utilization of P, Ca, Cu, Mg, Mn, and Zn. After a 21-d growth experiment, feed was withheld for 24 h and blood was collected from the anterior vena cava of all pigs for plasma mineral analyses. Twenty-four barrows from the growth experiment were then placed in metabolism cages and used in an 8-d mineral balance study. All pigs were maintained on their previous diet. Growth rate was fastest (P < .05) and feed efficiency was highest (P < .05) for pigs fed phytase-supplemented diets. Feed intake was unaffected (P > .05) by dietary treatment. Plasma P (P < .01) and Mg (P < .05) concentrations increased with phytase addition. Plasma Zn concentration increased (P < .05) when phytase was added to the diet containing no supplemental Zn, but plasma Zn concentration was not affected (P > .05) by phytase when the diet was supplemented with 100 mg of Zn/kg. Apparent Ca, P, and Cu balance were improved (P < .05) with phytase addition; however, Cu balance was reduced (P < .05) by Zn supplementation. Zinc balance was increased (P < .05) with supplemental zinc and phytase in the diet. These results indicate that the growth-promoting effect of phytase may be due to an overall increase in the availability of minerals.

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Effekt einer Zulage an mikrobieller Phytase zu einer Mais‐Soja‐Diät auf die scheinbare Absorption von Mg, Fe, Cu, Mn und Zn sowie auf Parameter des Zinkstatus beim Ferkel

Cited by 59 publications

References 12 publications

the effect of the combination of microbial phytase and amino acid supplementation of diets for finishing pigs on p and n excretion and carcass quality

the effect of the combination of microbial phytase and amino acid supplementation of diets for finishing pigs on p and n excretion and carcass quality

Factors Affecting Arsenic and Copper Runoff from Fields Fertilized with Poultry Litter

Phytase-induced changes in mineral utilization in zinc-supplemented diets for pigs3

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