Copper and Zinc Interrelationships in the Pig

Ritchie, H. D.; Luecke, R. W.; Baltzer, B. V.; Miller, E. R.; Ullrey, D. E.; Hoefer, J. A.

doi:10.1093/jn/79.2.117

Cited by 76 publications

(29 citation statements)

References 9 publications

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“…Clqone of the d~fferences were dgnificanu well-documented Zn-Cu biological interaction (Ritchie et al, 1963). None of the other changes in serum Zn, serum Cu or albumin were different among treatments.…”

Section: Resultsmentioning

confidence: 70%

Zinc-Amino Acid Complexes for Swine

Hill

Peo²,

Lewis

et al. 1986

Journal of Animal Science

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Two experiments were conducted to determine the effect of sources of dietary zinc on gain, feed conversion and blood and bone traits of swine. In the first experiment 96 pigs were used in a 28-d study. The pigs were fed diets with no supplemental Zn or with either 9 or 12 ppm supplemental Zn from zinc sulfate (ZnSO 4), zinc methionine (ZnMet) or zinc methionine with picolinic acid (ZnMet w/PAL each with or without 5% added corn oil. There were differences (P<.05) in average daily gain (ADG) and average daily feed intake (ADFI) between the pigs fed the two organic Zn sources, with those fed ZnMet w/PA showing the better gains and feed conversion.However, neither organic Zn source resulted in pig performance that was different from either the diet with no supplemental Zn or the diets supplemented with Zn from ZnSO 4. In the second experiment the same dietary Zn sources and treatments were fed as in Exp. 1 except that corn oil was deleted as a variable. No differences in ADG, ADFI, feed/gain (F/G) or in changes in serum Zn or Cu were observed among treatmerlts during either the 21-d nursery or the 56-d growing periods. During the subsequent 56-d finishing period ADG and ADFI were greater (P<.01) for pigs fed the Zn-supplemented diets than for those fed the diets without supplemental Zn. There were no differences among treatments in F/G during the finishing period. Zn content of bone ash was lower (P<.01) in the non-Zn-supplemented pigs. These data suggest that the Zn sources used are of similar biological value and do not support the theory that picolinic acid aids Zn absorption.

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Section: Resultsmentioning

confidence: 70%

Zinc-Amino Acid Complexes for Swine

Hill

Peo²,

Lewis

et al. 1986

Journal of Animal Science

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“…Ritchie et al (1963) specified that a high dietary protein level may decrease Cu toxicity. Without changing the inclusion amounts of these minerals, in the current study the authors monitored the excreta of minerals under conditions of feeding stress.…”

Section: Resultsmentioning

confidence: 99%

Changes in Certain Serum and Faeces Parameters in Weaned Piglets as a Response to Nutritional Stress

et al. 2015

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Weaning is associated with several stress factors and their effects on the piglet's body are fairly well known. Thus, changes were estimated in certain serum and faecal parameters after weaning owing to dietary protein level, though essential amino acid (AA) levels were maintained or reduced. Eighteen Topigs piglets were assigned randomly to three homogenous groups. The dietary protein level was reduced by 10% in diets 1 and 2 compared with diet C. Diet 1 had similar levels of essential AA to diet C, while the levels of essential AA in diet 2 were reduced by 10%. Blood samples were collected by jugular venipuncture in the farrowing unit on four occasions: before and after separation from the sow; the day after transfer to the nursery; and seven days after weaning. Faecal excreta were collected daily. No major health problems arose, and total pathogen germs were not different among treatments. Cortisol concentration reached similar values to those from the farrowing unit seven days after weaning. Whatever the diet, vitamin E in plasma decreased significantly in the first seven days post weaning. The reduction of dietary protein, as well as essential AAs, adversely affected the concentration of Cu (by 17.3%) in plasma. Selenium concentration in plasma increased slightly, irrespective of diet. The authors conclude that providing dietary protein at a particular level (diet 1), while maintaining AAs at normal level, limits faecal nitrogenous content without significantly modifying stress indicators (except vitamin E) or faecal composition.

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“…For example, rats maintained on marginally adequate amounts of copper develop copper deficiency when given high (Campbell and Mills, 1974) or even physiological (Murthy et al, 1974) intakes of zinc. Conversely, pigs ted high copper rations become zinc deficient (Ritchie et al, 1963). This syndrome is reversed if the intake of the less abundant mineral is increased; zinc supplementation, for example, increases the tolerance of pigs to high copper intakes (Suttle and Mills, 1966).…”

Section: Trace Metal Interactionsmentioning

confidence: 99%

Some nutritional aspects of trace metals

Aggett¹,

Davies²

1983

J of Inher Metab Disea

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A brief outline of the known biochemical roles of manganese and chromium is given before the problems of determining human trace metal status are discussed. The factors predisposing to trace metal deficiency are reviewed but particular emphasis is placed upon those which alter the bioavailability of essential trace metals from natural and synthetic diets. This is illustrated by practical examples which show the importance of investigating the bioavailability of the trace metal content of artificial diets used in paediatric care. The results of such studies highlight the need to assess similarly the adequacy of the trace element composition of the many meat substitutes and extenders available currently. Finally, some aspects of trace metal supplementation of intravenous feeding regimens are described.

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Copper and Zinc Interrelationships in the Pig

Cited by 76 publications

References 9 publications

Zinc-Amino Acid Complexes for Swine

Zinc-Amino Acid Complexes for Swine

Changes in Certain Serum and Faeces Parameters in Weaned Piglets as a Response to Nutritional Stress

Some nutritional aspects of trace metals

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