Influence of protein sources on performance and plasma amino acid patterns of ruminants

Theurer, Clark Brent

doi:10.31274/rtd-180817-4188

Cited by 2 publications

(7 citation statements)

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“…This was probably due to the degra dation of SBM and resynthesis of new amino adds prior to intestinal digestion. It has been suggested (Theurer, 1962) that the similarity of essential amino acids in SBK and microbial protdn may be the reason for this lack of a consistent effect on PFAA, but abooasal amino acid patterns observed in the present study did not reflect the presence of any undigested SBM.…”

Section: Similar the Results Given Incontrasting

confidence: 46%

“…The high rumen dry matter associated with the urea treatment may go with the data showing a reduced diges tion, The reduced, digestion in the lambs fed urea may result from the lack of adequate nitrogen several hours after feeding because nitrogen which is highly available following consunçtion would have been dis sipated by this time, Vlhereas the somewhat reduced ruminai digestion of the CGM ration might result from the lack of available or soluble nitrogen. In digestion trials, both little (I960) and Theurer (1962) observed reduced digestion of the CGM ration dry matter in comparison to the SBM ration» Most of the reduced digestion was accounted for in the less available carbohydrate, cellulose. The results of Iheurer indicated that a small amount of available nitrogen as urea stimulated cellulose digestion.…”

Section: Similar the Results Given Inmentioning

confidence: 99%

“…The digestion trial studies of Little (I960) and Theurer (1962) showed that lambs receiving the same basic semipurified rations digested ap proximately 70 per cent of the ingested nitrogen as shown by fecal nitrogen studies. These authors observed similar nitrogen digestibility coefficients irrespective of the nitrogen source.…”

Section: Similar the Results Given Inmentioning

confidence: 99%

“…Ae plasma Aree basic amino acids and ammonia were determined and originally discussed by Theurer (1962). Hie basic amino acids previously reported include ornithins» lysine* histidine and arginine.…”

Section: Resultsmentioning

confidence: 99%

“…The influence of nitrogen sources on plasma amino acid patterns has not been studied in the ruminant animal, except for the studies of Theurer (1962). In these investigations, lambs fed rations containing com gluten meal had lower plasma lysine levels than lambs fed either urea or soybean meal as the major source of nitrogen.…”

Section: Hogan (1961) Presented Evidence Showing That the Absorptim Omentioning

confidence: 97%

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Influence of dietary nitrogen sources on amino acids in plasma and abomasal ingesta from sheep

Poley

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Section: Similar the Results Given Incontrasting

confidence: 46%

Section: Similar the Results Given Inmentioning

confidence: 99%

Section: Similar the Results Given Inmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Hogan (1961) Presented Evidence Showing That the Absorptim Omentioning

confidence: 97%

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Influence of dietary nitrogen sources on amino acids in plasma and abomasal ingesta from sheep

Poley

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Potassium, protein and basic amino acid interrelationships in the baby pig

Leibholz

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Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy. Table The plasma protein levels were found to be higher at six weeks of age than at four weeks of age as can be seen in Table 8. The result of increasing the dietary protein level seemed to be an increase in the plasma 47 . (1959)). This difference was not seen at two weeks, thus one assumption which can be made is that such differences do take time to develop, and in kwashiorkor studies the patients were exposed to extremely low protein intakes. The potassium supplementation of the rations caused a reduction of the plasma protein levels but it is doubtful that this is a cat ionic effect. As the reduc tion was small it may be an artifact. TABLE OF CONTENTS INTRODUCTIONThe alpha amino nitrogen content of the plasma is much higher after four weeks of feeding the experimental rations than after two weeks. These results are in agreement with the work of Puchal (1962) who reportedthat the free plasma amino acids increased with increasing age. The supplementation with potassium was again found to decrease the alpha amino nitrogen levels after two weeks of feeding the experimental rations.The sodium content of the plasma was quite variable and generally rather higher than the values previously reported for the baby pig (Hannan (1959)). In this work the sodium values did not appear to be altered by the protein content of the ration or the amino acid supplementation.The free plasma basic amino acids are summarized in Table 11. The values quoted for total basic amino acids is the sum of the arginine, histidine, lysine and ornithine, all of which can act as cations at physiological pH values. In general it will be noticed that increasing the level of protein in the ration increased the amino acid values. This effect was more pronounced after two weeks of the experiment than after four 49 Tables 3, 4 and 5, and the calculated analysis in Table 6. Each ration was also supplemented with 2 per cent potassium acetate.Blood samples were again collected after 14 and 28 days of feeding the experimental rations. Plasma free amino acids, protein, sodium and potassium content were measured in these samples. Results and discussionIn contrast to the results of Experiment 1127, it was found in this experiment that the growth ratw was increased by the addition of potassium at all protein levels. These results are shown in (7.4) (8.3) (6.9) (7.6) (7.2) (7.7) of these data are shown in Table 18 Another observation to be made from the analysis in Table 18 1 152 120 120 144 160 126 2 174 126 160 166 144 139 3 166 190 166 190 216 183 4 144 150 150 150 150 150 5 150 155 155 150 150 150 Ave. (157) (148) (150) (160) (164) (148)Increasing the dietary protein levels also increased the level of plasma proteins (Table 19) The summary of the free plasma amino acids can be found in Table 20.In general the free amino acids were increased with increasing age from four to six weeks. Potassium t...

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Influence of protein sources on performance and plasma amino acid patterns of ruminants

Cited by 2 publications

References 43 publications

Influence of dietary nitrogen sources on amino acids in plasma and abomasal ingesta from sheep

Influence of dietary nitrogen sources on amino acids in plasma and abomasal ingesta from sheep

Potassium, protein and basic amino acid interrelationships in the baby pig

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