Konzentration und Retention von Aminosäuren bei Ferkeln

Walz, O. P.; Pallauf, J.

doi:10.1111/j.1439-0396.1993.tb00331.x

Cited by 2 publications

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References 12 publications

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“…In Ubereinstimmung mit dem Befund nach Phosphatzulage im vorliegenden Versuch, setzen gut mit P versorgte Ferkel taglich 2 bis 3 g P, je kg Korpermassezunahme 4 bis 5g P an (Liidke u.a., 1990;Ketaren u.a., 1993;Walz und Pallauf, 1993 …”

Section: Materials Und Methodenunclassified

Evaluation of aspergillus niger phytase and phosphate with weaned piglets

Schöne

Lüdke

Kirchheim

1995

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A high phytic acid diet (barley, wheat, soya bean meal, 4 g P/kg diet, of that 2/3 phytate P) without added phytase, with phytase supplement (1000 U/kg diet) or with supplementary phosphate (2.2 g P/kg diet) was examined with 3 x 12 weaned piglets. The three diets contained 8 g Ca/kg. At the end of experiment 6 pigs/group were slaughtered. In animal body (as empty body) the content and gain of ash, P, Ca, protein and fat were detected. P supplementation and supplementary phytase had no effect on dry matter, protein and fat content of animal body. The enzyme but more the supplementary phosphate increased mineralization of skeleton and made the animal body higher in ash, P and Ca content. Piglets without supplementary phytase and P gained 1.1 g P daily. Phytase increased daily P gain by 0.5 g (P < 0.05), the phosphate by 1.4 g (P < 0.001). The daily Ca gain was 1.7; 2.8 and 5.1 g in the different groups. A piglet (body weight 20 kg) with sufficient P and Ca in the diet gains 5 g P and 10 g Ca per kg body weight gain (empty body).

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Section: Materials Und Methodenunclassified

Evaluation of aspergillus niger phytase and phosphate with weaned piglets

Schöne

Lüdke

Kirchheim

1995

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Retention and utilization of amino acids in piglets fed ad libitum or restrictively diets supplemented with organic acids

Walz

Pallauf²

1997

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In a metabolic trial 4 groups of 8 piglets of 5 kg weight each were kept individually for 45 days (final weight 23 kg) and fed a practical diet. At the beginning of the experiment the body amino acid contents of an additional group of 8 piglets were determined by carcass analysis, and at the end of the experiment the body amino acid contents of the 4 test group piglets (A = control fed ad libitum, B and C = supplement of 1.5% fumaric acid fed ad libitum or restrictively, D = supplement of 1.5% citric acid fed ad libitum) were also analysed. The amino acid retention during the experimental period was determined by difference. The supplements of fumaric or citric acid did not influence the amount of the amino acid retention. The quotient of amino acid retention to amino acid consumed or the "productive amino acid value" was calculated and the maintenance requirements of essential amino acids for piglets were used to estimate the productive amino acid value for both retention and maintenance. The mean amino acid retention amounted to about 56 g/d, i.e. 3.49 g/kg W0.75.d of essential amino acids. The essential amino acid requirements for maintenance was 2.0 g, i.e. 0.29 g/kg W0.75.d, showing a variation of 4% (Leu) to 20% (Met+Cys) when related to the amount of the corresponding amino acid retention. With regard to the amino acid pattern for retention of the nutritionally most important amino acids, the following ratios were found: Lys, 100 (6.27 g/16 g N): Met+Cys, 48 (3.03 g): Thr, 56 (3.49 g): Trp, 13 (0.80 g). The productive amino acid values ranged from 40% (Trp), 55% (Thr), 66% (Met) to 80% (Lys). Under the conditions investigated, neither the supplements of organic acids nor the feed restriction influenced the amino acid utilization.

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Konzentration und Retention von Aminosäuren bei Ferkeln

Cited by 2 publications

References 12 publications

Evaluation of aspergillus niger phytase and phosphate with weaned piglets

Evaluation of aspergillus niger phytase and phosphate with weaned piglets

Retention and utilization of amino acids in piglets fed ad libitum or restrictively diets supplemented with organic acids

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