Effect of Reovirus Infection and Dietary Levels of Selected Vitamins on Immunocompetence of Chickens

Me, Cook; Wt, Springer

doi:10.2307/1590163

Cited by 13 publications

(5 citation statements)

References 26 publications

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“…These results are congruent with reports of depressed immune function in rats maintained on diets deficient in choline and methionine (Williams etal., 1979;Nauss etal., 1982). The lack of change in antibody response of chicks receiving choline supplements is in accord with results of Cook and Springer (1983), who observed no changes in antibody titer after SRBC administration or in wattle swelling after administration of PHA-P to chicks fed 20, 100, and 200% of the National Research Council (1977) choline requirement. The results of our study do not agree with those of Bhargava etal.…”

Section: Resultssupporting

confidence: 85%

“…It was not possible in these studies to distinguish between the effects of methionine and choline. Cook and Springer (1983), however, found that choline deficiency did not affect immune responses of chickens. In the present study, the specific effects of methionine and choline on immune responses were studied in broilers under conditions of equal amounts of dietary Na + and CI -.…”

Section: Introductionmentioning

confidence: 90%

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Enhanced Immune Responses in Broiler Chicks Fed Methionine-Supplemented Diets

et al. 1987

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Effects of feeding supplementary methionine and choline on broiler growth and immunity were examined by supplementing a corn-soybean diet that contained 21% crude protein, 3,255 kcal metabolizable energy/kg diet, .35% methionine, .37% cystine, and .13% choline. Methionine (.063, .125, .25%) and choline (.125, .25%) were dietary variables. Sulfate (.055%) was added either alone or along with methionine (.125 or .25%) and choline (.125%). In one study, the .25% methionine diet was supplemented with .121% betaine. Sodium and chloride levels were constant in all the diets. Feed and distilled water were supplied ad libitum. Total antibodies, immunoglobulin (Ig) G (2-mercaptoethanol-resistant antibodies) and IgM (2-mercaptoethanol-sensitive antibodies) were determined in 3-wk-old chicks inoculated intraperitoneally with sheep red blood cells. The thymus-derived (T)-cell-dependent in vivo mitogen response to phytohemagglutinin-P (PHA-P) was assessed via wing web swelling. The methionine requirement for growth (0 to 3 wk of age) was approximately .413% of the diet (.35% in the basal diet plus .063% added). Supplementation of the basal diet with .125% choline stimulated growth to the same extent as did the extra .063% of methionine. Addition of .055% sulfate with .125% choline did not improve the ability of the latter to spare methionine. Supplemental methionine resulted in significant (P less than .05) dose-related increases in total antibody, IgG, and response to the mitogen PHA-P, but not in IgM. There were no effects of choline on the immune variables studied. These results suggest that methionine is required for select components of the antibody response, which effect might be related to T-cell help.

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 90%

Enhanced Immune Responses in Broiler Chicks Fed Methionine-Supplemented Diets

et al. 1987

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“…A preliminary trial revealed peak response to PHA-P mitogen between 13 and 18 h (figure 1). Because 17 h has been used (Cook and Springer, 1983) in chicks as a stan- Figure 1. Change in skinfold thickness in response to injection with a mitogen (PHA-P).…”

Section: Methodsmentioning

confidence: 99%

“…Corrections also were made for any response due to injection of PBS. Skinfold thickness was calculated as follows: (Cook and Springer, 1983) Sfmm = (Sf17-Sf0 of PHA-P injected flank) -(SflT-Sf0 of PBS injected flank).…”

Section: Methodsmentioning

confidence: 99%

Effect of Nutritional Status, Age at Weaning and Room Temperature on Growth and Systemic Immune Response of Weanling Pigs

Crenshaw

Cook

Odle

et al. 1986

Journal of Animal Science

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Two experiments were conducted to determine the effect of nutritional status, age at weaning and room temperature on growth and immune response of pigs. In the first experiment, 72 pigs were weaned at either 2 or 3 wk and fed either a complex, simple-adequate or simple-inadequate diet for a 24-d period. Total antibody (TAb) titers in response to injections of human red blood cells (RBC) on either 0, 4, or 16 d postweaning were not affected by age at weaning or dietary treatments even though the nutritional status was compromised to such an extent that pigs fed the simple-adequate diet gained at one-half the rate (.172 vs .349 kg/d) of pigs fed the complex or simple-adequate diets (P less than .01). In Exp. 2, the immunological response of 144 pigs weaned at 3 wk were evaluated at 4 and 8 d postweaning. Pigs were weaned into rooms that averaged either 25 or 18 C, and were fed either a complex or simplex-adequate diet at either ad libitum (AL) or restricted (Res) levels for a 24-d period. Restriction of either the complex or simple diet for the first 16 d of the trial drastically reduced (P less than .01) the growth rates of Res pigs compared with AL pigs (.042 vs .236 kg/d). There were no differences in skinfold thickness (Sf) or TAb, 2-mercaptoethanol sensitive (MEs) and resistant (MEr) antibody titers when pigs were inoculated with phytohemagglutinin-P (PHA-P) or RBC at 4 d postweaning regardless of room temperature, diet source or feeding level.(ABSTRACT TRUNCATED AT 250 WORDS)

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“…Frequent clinical indications encompass limping, paralysis, toes curling inward, and elevated culling rates [17]. As riboflavin insufficiency reverberates through metabolic pathways, its consequences extend even to immunity [18,19].…”

Section: Introductionmentioning

confidence: 99%

From Metabolism to Vitality: Uncovering Riboflavin’s Importance in Poultry Nutrition

Shastak,

Pelletier

2023

Animals

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Riboflavin, or vitamin B2, is indispensable for poultry, profoundly impacting their metabolic equilibrium, growth, and overall health. In a climate of increasing demand for poultry products and heightened production intensity, grasping the multifaceted roles of riboflavin in domestic fowl nutrition becomes paramount. This essential vitamin serves as a precursor to two vital coenzymes, flavin mononucleotide and flavin adenine dinucleotide, integral players in pivotal redox reactions and energy metabolism. Inadequate riboflavin levels translate into stunted growth, skeletal deformities, and compromised feed conversion efficiency, thereby adversely affecting poultry performance and bottom-line profitability. Riboflavin goes beyond its fundamental role, ameliorating nutrient utilization, facilitating protein synthesis, and augmenting enzyme activity, rightfully earning its epithet as the “growth-promoting vitamin”. Poultry’s reproductive success intricately hinges on riboflavin levels, dictating egg production and hatchability. It is imperative to note that riboflavin requirements exhibit variations among poultry species and distinct production phases, emphasizing the importance of judicious and balanced supplementation strategies. Aligning dietary recommendations with genetic advancements holds the promise of fostering sustainable growth within the poultry sector. Exploring the multifaceted aspects of riboflavin empowers researchers, nutritionists, and producers to elevate poultry nutrition and overall well-being, harmonizing with the industry’s evolving demands.

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Effect of Reovirus Infection and Dietary Levels of Selected Vitamins on Immunocompetence of Chickens

Cited by 13 publications

References 26 publications

Enhanced Immune Responses in Broiler Chicks Fed Methionine-Supplemented Diets

Enhanced Immune Responses in Broiler Chicks Fed Methionine-Supplemented Diets

Effect of Nutritional Status, Age at Weaning and Room Temperature on Growth and Systemic Immune Response of Weanling Pigs

From Metabolism to Vitality: Uncovering Riboflavin’s Importance in Poultry Nutrition

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