The Effect of Dietary Protein on the Course of Various Infections in the Chick

Boyd, Frank M.; Edwards, H. M.

doi:10.1093/infdis/112.1.53

Cited by 26 publications

(9 citation statements)

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“…During the 3 weeks of that experiment, the E. coli inoculation depressed body weight gain and feed consumption 10 and 12% when poults were fed the 28% protein diet and 17 and 16%, respectively, when fed the 22% protein diet. These data are compatible with previous reports that higher protein reduced mortality due to E. coli infection (Boyd and Edwards, 1963) and prevented decreased body weight gain during coccidial infection (Sharma et al, 1973).…”

Section: Discussionsupporting

confidence: 93%

Dietary Protein and Yolk Sac Inoculation with Escherichia coli in Young Turkeys

1985

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An experiment was conducted to examine the effect of pathogenic Escherichia coli inoculated into the yolk sac of day-old turkeys. Escherichia coli was isolated from the yolk sac of stunted poults and inoculated directly into the yolk sac of day-old birds. Poults were administered either .1 ml of uninoculated sterile Todd-Hewitt broth or .1 ml of a 10(-3) or 10(-2) dilution of a 24-hr E. coli culture containing 3.4 X 10(8) viable bacteria/ml. In addition, poults were fed either 28 or 22% protein diets from 0 to 21 days of age to form a 3 X 2 factorial arrangement. Body weight gain and feed consumption were measured weekly, and dry matter and protein retention and nitrogen-corrected metabolizable energy were measured from 7 to 10 and 17 to 20 days postinoculation. Intestinal mucosal dipeptidase and maltase activities were determined at 21 days of age. Average mortality by 7 days of age was increased from 1 to 36% from the E. coli inoculation of the yolk sac. Escherichia coli significantly depressed body weight gain and feed consumption 27 and 30, 13 and 16, and 6 and 8%, respectively, during the first, second, and third weeks of the experiment but failed to affect feed efficiency. Feeding a 28% protein diet alleviated the depression in feed consumption and body weight gain to some extent compared with a substantial depression at 22% protein. Nitrogen content and gross energy of the excreta were increased by both dilutions of E. coli for the 7 to 10-day period; this was indicative of a malabsorption of nutrients.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Discussionsupporting

confidence: 93%

Dietary Protein and Yolk Sac Inoculation with Escherichia coli in Young Turkeys

1985

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“…The commonplace observation that inadequate diets either predispose to, or exacerbate infectious disease has been verified in many experimental model systems (1)(2)(3)(4)(5). Several host defensive mechanisms are affected .…”

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confidence: 99%

Influence of dietary protein restriction on immune competence. I. Effect on the capacity of cells from various lymphoid organs to induce graft-vs.-host reactions.

Bell¹,

Hazell²

1975

The Journal of Experimental Medicine

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The effect of dietary protein restriction in mice on the capacity of their lymphoid cells to induce graft-vs.-host responses (GVHR) was studied. Mice were fed diets containing 4% or 20% protein ad libitum. The GVHR capacity of cells from all lymphoid organs of deprived mice was increased on a cell-for-cell basis over that of their normally fed counterparts. The slope of the dose-response curves did not change for spleen and mesenteric lymph node cells although their reactivity was increased by fourfold, and 50% respectively. The slope of the curves for thymus and Peyer's patches was changed indicating fundamental changes in the reactive cellular populations of these organs. Changes in GVH reactivity of cell populations from deprived mice were not mediated by increased corticosteroid production as adrenalectomy did not reduce their GVH responses. An explanation for the results was sought in a general decrease in production of short-lived cells with a rapid turnover such as most B cells. Long-lived T cells appear to persist and retain their reactivity for quite long periods in the face of nutritional insults.

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“…3. Comparison of maximum titers of hemolysin and titers 10 days after immunization in Experiments III a and IVa with those observed in Experiments IHb and IVb 74 9. Mean titers of hemagglutinin in the serum after injection into rats of sheep erythrocytes on the 1st or 3th day of repletion with various proteins, after injection into stock controls and after injection into animals fed low nitrogen diet continuously 77…”

Section: Values Of "T" For Comparisons Of Values For Serum Nitrogenmentioning

confidence: 94%

“…through 28th days of protein depletion, daily food intake during the first 3 weeks and during the 4th week, and weight loss during the 4th week of depletion of rats which were grouped according to the change in mean weekly fodd intake between the average for the first 3 weeks and the value for the 4th week of depletion 41 8. Weight change, food intake, and estimate of efficiency of utilization of nitrogen for body weight gain during repletion of rats in Experiments HI ànd IV, and size of abdominal fat deposits at autopsy of rats in Experiments III, IV, and V 43 9. Nitrogen and fat content of the liver and relationship of hepatic nitrogen to body weight in animals repleted for 2 or 3 weeks with various proteins, and in stock controls and in animals depleted for 3» 6, or 10 weeks 48 10.…”

Section: Urinary Nitrogen Excretion In Experiments Ilia During the 24thmentioning

confidence: 99%

Formation of immunoproteins during protein repletion

Kenney

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The Effect of Dietary Protein on the Course of Various Infections in the Chick

Cited by 26 publications

References 0 publications

Dietary Protein and Yolk Sac Inoculation with Escherichia coli in Young Turkeys

Dietary Protein and Yolk Sac Inoculation with Escherichia coli in Young Turkeys

Influence of dietary protein restriction on immune competence. I. Effect on the capacity of cells from various lymphoid organs to induce graft-vs.-host reactions.

Formation of immunoproteins during protein repletion

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