Long-term feeding effects of dietary protein levels on egg production, immunocompetence and plasma amino acids of laying hens in subtropical condition

Poosuwan, Kanokan; Bunchasak, Chaiyapoom; Kaewtapee, C.

doi:10.1111/j.1439-0396.2008.00898.x

Cited by 23 publications

(20 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar change in plasma glycoalbumin concentration was observed in chickens fed the CP 0% diet, whereas plasma albumin concentration was decreased by protein-deprivation (Table 3). It is well-known that plasma levels of chicken albumin are easily affected by changes in dietary CP levels (Takahashi et al, 1995;Poosuwan et al, 2010), which is in agreement with the results derived in the present study. In addition, as there was no change in plasma glucose concentrations from feeding a protein-free diet, the increase in the ratio of glycoalbumin to albumin might be due to both an increase in plasma glycoalbumin and a decrease in plasma albumin by feeding the CP 0% diet.…”

Section: Discussionsupporting

confidence: 83%

Influence of Varying Dietary Protein Levels on Glycation of Albumin, Tryptophan and Valine in the Plasma of Chickens

et al. 2017

View full text Add to dashboard Cite

Glycation is a chemical reaction in which reducing sugars bind non-enzymatically to compounds containing amino groups. Avian species like chickens are hyperglycemic animals and have high body temperature compared to mammalian species, which enables avian species to accelerate the glycation of proteins and amino acids with glucose. Although varying dietary crude protein (CP) levels alter plasma concentrations of proteins and amino acids, the influence of varying CP levels on the glycation of plasma proteins and amino acids has not been studied so far. In the present study, therefore, glycation of albumin, tryptophan and valine in the plasma of chickens fed diets with varying CP levels (0, 10, 20, 40 and 60%) was examined. At the end of the experimental period, blood samples were collected and plasma concentrations of glycoalbumin, glycated tryptophan (tryptophan-Amadori product and (1R, 3S) -1 -(D -gluco -1, 2, 3, 4, 5 -pentahydroxypentyl) -1, 2, 3, 4 -tetrahydro -β -carboline -3 -carboxylic acid (PHP-THβC)), and valine-Amadori product were measured. Although plasma albumin concentration was reduced along with the decrease in dietary CP levels from 20% to 0%, glycoalbumin in the plasma was increased under such dietary conditions. Similar increase in the ratios of tryptophan-Amadori product to tryptophan and valine-Amadori product to valine in the plasma of chickens fed a protein-free diet was observed. These results suggest that dietary protein deficiency might enhance the non-enzymatic glycation of plasma proteins and amino acids in chickens.

show abstract

Section: Discussionsupporting

confidence: 83%

Influence of Varying Dietary Protein Levels on Glycation of Albumin, Tryptophan and Valine in the Plasma of Chickens

et al. 2017

View full text Add to dashboard Cite

show abstract

“…A relatively short time of feeding laying hens (12 weeks) and a small difference in protein contents (14, 16 and 18%) have been shown to cause a significant difference in ND titres between those fed diets containing 14 or 16% protein (2.2 and 2.5 antibody titres, respectively) and those fed a diet containing 18% protein (4.2) [ 26 ]. A similar result was also found at 27 weeks in laying hens fed a 14% CP diet (2.0) compared with those fed an 18% CP diet (3.3) [ 29 ]. It is not possible to identify the specific cause of the reduced antibody titres in the pigeons on the 6 and 10% CP diets, but a reduction in the ability of B-lymphocytes to synthesize antibodies due to reduced availability of amino acids or an imbalance in amino acids [ 52 ] could have contributed; it is also possible that receptors on cell surfaces of other types of lymphocyte involved in antigen recognition or production of cytokines were reduced [ 21 , 52 ].…”

Section: Discussionsupporting

confidence: 72%

Functions of innate and acquired immune system are reduced in domestic pigeons (Columba livia domestica) given a low protein diet

Mabuchi¹,

Frankel²

2016

R. Soc. open sci.

View full text Add to dashboard Cite

Racing pigeons are exposed to and act as carriers of diseases. Dietary protein requirement for their maintenance has not been determined experimentally despite their being domesticated for over 7000 years. A maintenance nitrogen (protein) requirement (MNR) for pigeons was determined in a balance study using diets containing 6, 10 and 14% crude protein (CP). Then, the effects of feeding the diets were investigated to determine whether they were adequate to sustain innate and acquired immune functions. Nitrogen intake from the 6% CP diet was sufficient to maintain nitrogen balance and body weight in pigeons. However, the immune functions of phagocytosis, oxidative burst and lymphocyte proliferation in pigeons fed this diet were reduced compared with those fed 10 and 14% CP diets. Pigeons given the 6 and 10% CP diets had lower antibody titres following inoculation against Newcastle disease (ND) than those on the 14% CP diet. A confounding factor found on autopsy was the presence of intestinal parasites in some of the pigeons given the 6 and 10% CP diets; however, none of the pigeons used to measure MNR or acquired immunity to ND were infested with parasites. In conclusion, neither the 6 nor 10% CP diets adequately sustained acquired immune function of pigeons.

show abstract

“…[30] In addition, sufficient methionine levels in the diet have been demonstrated to be necessary for sustaining normal immunocompetence and achieving maximum egg production in laying hens in subtropical conditions. [31] Bunchasak and Silapasorn [32] reported that laying hens under tropical conditions fed a low-protein diet (14% crude protein) supplemented with 0.44% methionine improved egg production and egg weight. In the same study bird mortality was reduced, and egg shell thickness was improved when these hens were supported with methionine in feed.…”

Section: Resultsmentioning

confidence: 99%

Characterization of isolated yeast growth response to methionine analogs

Saengkerdsub

Lingbeck

Wilkinson

et al. 2013

Journal of Environmental Science and Health, Part B

View full text Add to dashboard Cite

Methionine is one of the first limiting amino acids in poultry nutrition. The use of methionine-rich natural feed ingredients, such as soybean meal or rapeseed meal may lead to negative environmental consequences. Amino acid supplementation leads to reduced use of protein-rich ingredients. The objectives of this study were isolation of potentially high content methionine-containing yeasts, quantification of methionine content in yeasts and their respective growth response to methionine analogs. Minimal medium was used as the selection medium and the isolation medium of methionine-producing yeasts from yeast collection and environmental samples, respectively. Two yeasts previously collected along with six additional strains isolated from Caucasian kefir grains, air-trapped, cantaloupe, and three soil samples could grow on minimal medium. Only two of the newly isolated strains, K1 and C1, grew in minimal medium supplied with either methionine analogs ethionine or norleucine at 0.5% (w/v). Based on large subunit rRNA sequences, these isolated strains were identified as Pichia udriavzevii/Issatchenkia orientalis. P. kudriavzevii/I. orentalis is a generally recognized as a safe organism. In addition, methionine produced by K1 and C1 yeast hydrolysate yielded 1.3 ± 0.01 and 1.1 ± 0.01 mg g(-1) dry cell. Yeast strain K1 may be suitable as a potential source of methionine for dietary supplements in organic poultry feed but may require growth conditions to further increase their methionine content.

show abstract

Long-term feeding effects of dietary protein levels on egg production, immunocompetence and plasma amino acids of laying hens in subtropical condition

Cited by 23 publications

References 57 publications

Influence of Varying Dietary Protein Levels on Glycation of Albumin, Tryptophan and Valine in the Plasma of Chickens

Influence of Varying Dietary Protein Levels on Glycation of Albumin, Tryptophan and Valine in the Plasma of Chickens

Functions of innate and acquired immune system are reduced in domestic pigeons (Columba livia domestica) given a low protein diet

Characterization of isolated yeast growth response to methionine analogs

Contact Info

Product

Resources

About