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1.

001-es BibID:BIBFORM134831
Első szerző:Achenef, Gashew Mequanint (animal science)
Cím:Arginine shapes growth and mTOR pathway gene expression in Japanese quails (Coturnix japonica) / Mequanint Gashew, Gebrehaweria K. Reda, Fadella Nur Almira, Eman Moustafa Abdelbary, Doha Mohamad Khalifeh, Sawadi F. Ndunguru, Gabriella Gulyás, Renáta Knop, Brigitta Csernus, Csaba Szabó, Ádám Z. Lendvai, Levente Czeglédi
Dátum:2025
ISSN:2045-2322
Megjegyzések:Arginine is a crucial amino acid that regulates growth, metabolism, and cellular homeostasis through nutrient-sensing pathways such as the mechanistic target of rapamycin (mTOR). However, the mechanisms by which dietary arginine modulates mTOR signalling and associated gene networks during early development remain poorly understood in birds. Here, we tested the effects of dietary arginine levels (low, control, and high) on body mass, gene expression, and gene network connectivity in Japanese quail chicks (Coturnix japonica). Using 153 birds over a 14-day experiment, we show that post-hatch arginine restriction significantly impairs growth in both sexes, while gene expression and gene network connectivity responses to arginine availability are strongly sex-specific. Arginine supplementation in females led to coordinated upregulation of growth-related genes (IGF1, GHR), translation regulators (EIF4EBP1), lipid metabolism genes (FASN, FABP1), and oxidative defence (SOD2). In contrast, males showed more limited changes, primarily involving MTOR and autophagy-related gene ATG5. Gene network analysis revealed enhanced connectivity and centrality in females under arginine supplementation, suggesting a more extensive gene interaction response, while males showed sparser networks under restriction, with MTOR and IGF1 emerging as key regulatory hubs. These findings provide novel insights into the sensitivity of developing birds to early nutritional conditions and suggest that the mechanisms underlying growth, gene expression, and gene networking can differ between the sexes, even without sex differences in phenotypic traits. Our results highlight the importance of considering sex-specific gene regulatory architectures when evaluating nutritional effects on vertebrate development.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Amino acid
gene expression
growth
poultry
mechanistic target of rapamycin
Megjelenés:Scientific Reports. - [Epub ahead of print] (2025), p. 1-25. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Almira, Fadella Nur (1994-) (animal scientist) AbdElbary, Eman (1991-) (animal science) Khalifeh, Doha Mohamad (1998-) (animal science) Ndunguru, Sawadi Fransisco (1980-) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
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2.

001-es BibID:BIBFORM134829
Első szerző:Achenef, Gashew Mequanint (animal science)
Cím:Dietary arginine modulates egg production and mTOR signalling pathway gene expression in adult Japanese quail (Coturnix japonica) / Mequanint Gashew, Gebrehaweria K. Reda, Fadella Nur Almira, Eman Moustafa Abdelbary, Gabriella Gulyás, Renáta Knop, Brigitta Csernus, Csaba Szabó, Ádám Z. Lendvai, Levente Czeglédi
Dátum:2026
ISSN:2451-943X
Megjegyzések:Arginine, an essential amino acid in birds, plays a central role in growth and reproduction. Regulation of the mechanistic target of rapamycin (mTOR) signalling pathway is among its key functions. This study examined how dietary arginine affects reproductive performance, body mass, and hepatic gene expression in adult female Japanese quail (Coturnix japonica). A total of 81 quails were randomly assigned to one of the three dietary treatments for 14 days: a diet containing 1.26% arginine (control), 0.945% arginine (restricted), and 1.575% arginine (supplemented). Body mass, hen-day egg production (HDEP), and egg mass were recorded, and liver samples were analysed using qPCR for mTOR signalling pathway-related genes. Arginine supplementation significantly increased HDEP, whereas neither restriction nor supplementation altered body mass or egg mass. Arginine restriction downregulated the expression of MTOR, IGF1, GHR, FASN, ATG5, ATG9A, SOD1, and SOD2 genes. In contrast, supplementation upregulated ATG5 but downregulated SOD2. Network analysis revealed treatment-dependent shifts: under restriction, SOD2 functioned as a key bridge despite reduced expression, whereas under supplementation, centrality shifted to GHR and FASN, indicating enhanced growth and lipogenic activity. Overall, dietary arginine reshaped the molecular structure of the mTOR pathway without affecting somatic maintenance, instead favouring reproductive output. These findings suggest that dietary arginine regulates egg production and gene expression in the mTOR signalling pathway in adult Japanese quail.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Japanese quail
Arginine
mTOR
Gene expression
Megjelenés:Veterinary and Animal Science. - 31 (2026), p. 1-10. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Almira, Fadella Nur (1994-) (animal scientist) AbdElbary, Eman (1991-) (animal science) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
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3.

001-es BibID:BIBFORM134241
Első szerző:Achenef, Gashew Mequanint (animal science)
Cím:Differential regulation of genes by arginine in Japanese quail / Mequanint Gashew, Fadella A. Nur, Eman AbdElbary, Sawadi F. Ndunguru, Gebrehaweria K. Reda, Gabriella Gulyás, Renáta Knop, Brigitta Csernus, Csaba Szabó, Ádám Z. Lendvai, Levente Czeglédi
Dátum:2025
ISBN:978-80-552-2916-4
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
arginine
gene expression
Japanese quail
Megjelenés:Animal Science Days 2025: Book of Abstracts: 33rd International Symposium, September 23-26, 2025 Nitra, Slovakia/ ed. Radovan Kasarda, Nina Moravčíková, Ľubica Jamborová. - p. 57. -
További szerzők:Almira, Fadella N. AbdElbary, Eman (1991-) (animal science) Ndunguru, Sawadi Fransisco (1980-) Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
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4.

001-es BibID:BIBFORM127175
Első szerző:Almira, Fadella N.
Cím:Sex-specific effects of feed restriction on adiponectin and its receptors in Japanese quail / Fadella N. Almira, Gebrehaweria K. Reda, Brigitta Csernus, Sawadi F. Ndunguru, Renáta Knop, Csaba Szabó, Ádam Z. Lendvai, Levente Czégledi
Dátum:2024
Megjegyzések:Excess energy is stored as fat in the liver and adipose tissue. The hepatic lipogenesis is highly responsive to dietary modifications. While it is widely recognized that reducing feed intake can prevent excessive fat deposition in poultry, the mechanism by which dietary availability regulates lipid metabolism through expression of certain genes in the nutrient sensing pathway is understudied. The purpose of this study is to determine the effect of dietary restriction on hepatic adiponectin (AdipoQ) gene expression (mRNA) and its receptors (Adipor1 and Adipor2) in Japanese quail (Coturnix japonica). We selected 32 birds aged eight weeks of both sexes with similar body weight and randomly assigned to two experimental groups, the ad libitum and 40% dietary restriction (DR). The experiment was conducted for 14 days, then all birds were sacrificed, and a liver sample was aseptically excised. Results showed that 40% DR significantly upregulate AdipoQ and Adipor1 expression in the liver of male quails, suggesting enhanced fat breakdown. However, no changes were observed in females. These findings highlight a potential sex-specific response to dietary restriction and emphasize the role of adiponectin in liver metabolism. Further research is needed to elucidate the complete regulatory mechanisms involved.
ISBN:978-3900397-15-9
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
feed restriction
gene expression
Japanese quails
lipid metabolism
Megjelenés:32nd International Symposium Animal Science Days : Book of Abstracts / szerk. Birgit Fürst-Waltl, Sarah-Joe Burn, Johann Sölkner, Werner Zollitsch. - p. 26. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Ndunguru, Sawadi Fransisco (1980-) Knop Renáta (1983-) (állatorvos) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
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5.

001-es BibID:BIBFORM109257
035-os BibID:(Scopus)85149477136 (WoS)000942239000001
Első szerző:Csernus Brigitta (élelmiszerbiztonsági és -minőségi mérnök)
Cím:Capsanthin supplementation modulates the immune response in broiler chickens under Escherichia coli lipopolysaccharide challenge / Brigitta Csernus, Csaba Szabó, Renáta Knop, Reda Gebrehaweria Kidane, Sawadi Fransisco Ndunguru, Gabriella Gulyás, Xénia Erika Ozsváth, Levente Czeglédi
Dátum:2023
ISSN:2363-9822
Megjegyzések:Due to the legislation of antibiotic usage, natural substances are required for application in the poultry industry. Because of their potential anti-inflammatory and immunomodulatory effects, carotenoids are great sources. Capsanthin, a major carotenoid giving the red color of pepper, is a promising feed additive, as it can reduce chronic inflammation. This study was conducted to determine the effects of capsanthin supplementation at 80 mg kg?1 in feed on the immune response of broiler chickens under Escherichia coli O55:B5 lipopolysaccharide (LPS) challenge. Ross 308 male broilers were divided into treatments: control (basal diet) and feedsupplemented groups. At 42 d of age, chickens were weighed and then challenged with 1 mg LPS per kilogram of body weight intraperitoneally. Four hours after injection, birds were euthanized, and then spleen and blood samples were collected. Capsanthin supplement at 80 mg kg?1 did not change the growth parameters and the relative spleen weight. LPS immunization resulted in higher splenic interleukin-1? (IL-1?), interleukin-6 (IL-6), and interferon-? (IFN-? ) mRNA expressions. Capsanthin addition reached lower gene expression levels of IL-6 and IFN-? compared to the LPS-injected birds. At plasma level, dietary capsanthin resulted in lower IL-1? and IL-6 levels. These results may indicate the potential anti-inflammatory effect of capsanthin supplementation in broiler chickens.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
capsanthin
broiler chicken
gene expression
immunology
Megjelenés:Archives Animal Breeding. - 66 : 1 (2023), p. 103-111. -
További szerzők:Szabó Csaba (1968-) (agrármérnök) Knop Renáta (1983-) (állatorvos) Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Ndunguru, Sawadi Fransisco (1980-) Gulyás Gabriella (1985-) (agrár) Ozsváth Xénia Erika Czeglédi Levente (1977-) (agrármérnök)
Pályázati támogatás:TKP2020-NKA-04
Egyéb
ÚNKP20-4-I-DE-101
Egyéb
K139021
OTKA
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6.

001-es BibID:BIBFORM118530
035-os BibID:(WoS)001175647600001 (Scopus)85184758825
Első szerző:Lugata, James Kachungwa (Ph.D hallgató)
Cím:Methionine sources and genotype affect embryonic intestinal development, antioxidants, tight junctions, and growth-related gene expression in chickens / James K. Lugata, Sawadi F. Ndunguru, Gebrehaweria K. Reda, Xenia E. Ozsváth, Eszter Angyal, Levente Czegledi, Gabriella Gulyas, Renata Knop, Janos Oláh, Zoltan Mészár, Rita Varga, Brigitta Csernus, Csaba Szabo
Dátum:2024
ISSN:2405-6545
Megjegyzések:Methionine (Met) is an essential and first limiting amino acid in the poultry diet that plays a significant role in chicken embryonic development and growth. The present study examined the effect of in ovo injection of DL-Met and L-Met sources and genotypes on chicken embryonic-intestinal development and health. Fertilized eggs of the two genotypes, TETRA -SL layer hybrid (TSL) d commercial layer hybrid and Hungarian Partridge colored hen breed (HPC) d a native genotype, were randomly distributed into four treatments for each genotype. The treatment groups include the following: 1) control non-injected eggs (NoIn); 2) saline-injected (SaIn); 3) DL-Met injected (DLM); and 4) L-Met injected (LM). The in ovo injection was carried out on 17.5 d of embryonic development; after hatching, eight chicks per group were sacrificed, and the jejunum was extracted for analysis. The results showed that both DLM and LM groups had enhanced intestinal development as evidenced by increased villus width, villus height, and villus area (P < 0.05) compared to the control. The DLM group had significantly reduced crypt depth, glutathione content (GSH), glutathione S-transferase 3 alpha (GST3), occludin (OCLN) gene expression and increased villus height to crypt depth ratio in the TSL genotype than the LM group (P < 0.05). The HPC genotype has overexpressed insulin -like growth factor 1 (IGF1) gene, tricellulin (MD2), occludin (OCLN), superoxide dismutase 1 (SOD1), and GST3 genes than the TSL genotype (P < 0.05). In conclusion, these findings showed that in ovo injection of Met enhanced intestinal development, and function, with genotypes responding differently under normal conditions. Genotypes also influenced the expression of intestinal antioxidants, tight junction, and growth-related genes.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
DL-Methionine
L-Methionine
In ovo injection
Intestinal development
Poultry
Megjelenés:Animal Nutrition. - 16 (2024), p. 218-230. -
További szerzők:Ndunguru, Sawadi Fransisco (1980-) Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Ozsváth Xénia Erika Angyal Eszter (1994-) (állatorvos doktor) Czeglédi Levente (1977-) (agrármérnök) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Oláh János (1976-) (állattenyésztés) Mészár Zoltán Mihály (1977-) (agrármérnök, biotechnológus) Varga Rita Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Szabó Csaba (1968-) (agrármérnök)
Pályázati támogatás:K 139021
Egyéb
Stipendium Hungaricum Scholarship
Egyéb
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7.

001-es BibID:BIBFORM131480
Első szerző:Ndunguru, Sawadi Fransisco (1980-)
Cím:Amino acid supplementation supports growth and reproductive development under dietary restriction / Ndunguru, Sawadi F.; Reda, Gebrehaweria K.; Csernus, Brigitta; Gulyás, Gabriella; Knop, Renáta; Szabó, Csaba; Lendvai, Ádám Z.; Czeglédi, Levente
Dátum:2025
ISSN:2673-6225
Megjegyzések:Introduction: Nutritional status influences developmental processes, including sexual maturation. While the effects of macronutrients on reproductive development are well studied, the role of specific amino acid composition in ovarian and follicular development in birds remains less explored. Here, we investigated the impact of dietary restriction and amino acid supplementation on growth and reproductive development of Japanese quail (Coturnix japonica). Methods: Birds were assigned to five dietary treatments: control (ad libitum), 20% dietary restriction (DR20), and DR20 supplemented with methionine (DR20 +Met), leucine (DR20+Leu) or both (DR20+Leu+Met) at levels 20% above the recommended nutrient content. Results and discussion: Dietary restriction reduced body mass, ovary mass, ovary index, and total antioxidant capacity without affecting hierarchical follicle counts or size. However, supplementation with either amino acid improved these parameters from dietary restriction to the control levels. Furthermore, methionine supplementation alone or combination of methionine and leucine significantly increased follicle numbers, whereas leucine alone had no effect on hierarchical follicle numbers. Our findings underscore the importance of amino acids in mitigating the adverse effects of dietary restriction on growth, reproduction, and oxidative balance in birds at the onset of reproductive maturation.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
amino acids
dietary restriction
Japanese quail
ovary follicles
total antioxidant capacity
Megjelenés:Frontiers in Animal Science. - 6 (2025), p. 1-13. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
Pályázati támogatás:K139021
OTKA
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8.

001-es BibID:BIBFORM123835
035-os BibID:(WoS)001311042300001 (Scopus)85203628397
Első szerző:Ndunguru, Sawadi Fransisco (1980-)
Cím:Embryonic Leucine Promotes Early Postnatal Growth via mTOR Signalling in Japanese Quails / Sawadi F. Ndunguru, Gebrehaweria K. Reda, Brigitta Csernus, Renáta Knop, James K. Lugata, Csaba Szabó, Ádám Z. Lendvai, Levente Czeglédi
Dátum:2024
ISSN:2076-2615
Megjegyzések:However, the specific mechanisms by which nutrients influence avian growth remain largely unknown. Amino acids can directly interact with the nutrient-sensing pathways, such as the insulin-like growth factor 1 (IGF-1)/mechanistic target of rapamycin (mTOR) pathways, which are known to regulate growth. We examined the effects of embryonic leucine on gene expression and phenotypic growth in Japanese quails by injecting 2.5 mg leucine or saline (control) into Japanese quail eggs on the tenth day of incubation and incubating them under standard conditions. The treatment groups had similar hatching success and size at hatching. However, between 3 and 7 days post-hatching, quails treated with embryonic leucine showed increased growth in body mass and wing, tarsus, head, and intestinal lengths, lasting up to 21 days. The hepatic expression of IGF1, IGF1R, mTOR, and RPS6K1 was upregulated in leucine-treated quails, while the expression of FOXO1 remained unaffected. In conclusion, a subtle increase in embryonic leucine may induce developmental programming effects in Japanese quail by interacting with the IGF-1/mTOR nutrient-sensing pathway to promote growth. This study highlights the role of embryonic amino acids as crucial nutrients for enhancing growth. It provides valuable insight into nutrient intervention strategies during embryonic development to potentially improve poultry growth performance.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
birds
physiology
nutrition
amino acid
mechanistic target of rapamycin
Megjelenés:Animals. - 14 : 17 (2024), p. 1-16. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Knop Renáta (1983-) (állatorvos) Lugata, James Kachungwa (1992-) (Ph.D hallgató) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
Pályázati támogatás:K139021
OTKA
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9.

001-es BibID:BIBFORM119806
035-os BibID:(Scopus)85188419101 (WoS)001190325200001
Első szerző:Ndunguru, Sawadi Fransisco (1980-)
Cím:Embryonic methionine triggers post-natal developmental programming in Japanese quail / Ndunguru, Sawadi F.; Reda, Gebrehaweria K.; Csernus, Brigitta; Knop, Renáta; Gulyás, Gabriella; Szabó, Csaba; Czeglédi, Levente; Lendvai, Ádám Z.
Dátum:2024
ISSN:0174-1578
Megjegyzések:Embryonic development is one of the most sensitive and critical stages when maternal effects may influence the offspring's phenotype. In birds and other oviparous species, embryonic development is confined to the eggs, therefore females must deposit resources into the eggs to prepare the offspring for the prevailing post-natal conditions. However, the mechanisms of such phenotypic adjustments remain poorly understood. We simulated a maternal nutritional transfer by injecting 1 mg of l-methionine solution into Japanese quail eggs before the onset of incubation. The increase in early methionine concentration in eggs activated the insulin/insulin-like signalling and mechanistic target of rapamycin (IIS/mTOR) signalling pathways and affected post-natal developmental trajectories. Chicks from methionine-supplemented eggs had higher expression of liver IGF1 and mTOR genes at hatching but were similar in size, and the phenotypic effects of increased growth became apparent only a week later and remained up to three weeks. Circulating levels of insulin-like growth factor-1 (IGF-1) and expression of ribosomal protein serine 6 kinase 1 (RPS6K1), the mTOR downstream effector, were elevated only three weeks after hatching. These results show that specific nutritional cues may have phenotypic programming effects by sequentially activating specific nutrient-sensing pathways and achieving transgenerational phenotypic plasticity.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
L-methionine
IGF1
mTOR
Growth
Amino acid
Megjelenés:Journal Of Comparative Physiology B-Biochemical Systemic And Environmental Physiology. - 194 (2024), p. 179-189. -
További szerzők:Reda, Gebrehaweria Kidane (1986-) (Animal Sceince) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Knop Renáta (1983-) (állatorvos) Gulyás Gabriella (1985-) (agrár) Szabó Csaba (1968-) (agrármérnök) Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:K139021
OTKA
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10.

001-es BibID:BIBFORM132693
Első szerző:Reda, Gebrehaweria Kidane (Animal Sceince)
Cím:Unpredictability and adaptive responses to dietary variability in Japanese quail / Gebrehaweria K. Reda, Sawadi F. Ndunguru, Brigitta Csernus, Renáta Knop, Csaba Szabó, Levente Czeglédi, Ádám Z. Lendvai
Dátum:2025
Tárgyszavak:idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Philosophical Transactions of the Royal Society B: Biological Sciences. - [Accepted by publischer] (2025). -
További szerzők:Ndunguru, Sawadi Fransisco (1980-) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Knop Renáta (1983-) (állatorvos) Szabó Csaba (1968-) (agrármérnök) Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:OTKA K139021
OTKA
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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11.

001-es BibID:BIBFORM131388
035-os BibID:(Scopus)105010883664
Első szerző:Reda, Gebrehaweria Kidane (Animal Sceince)
Cím:Reproductive resilience and trade-offs : egg component allocation under nutritional constraints in Japanese Quails / Gebrehaweria K. Reda, Sawadi F. Ndunguru, Renáta Knop, James K. Lugata, Brigitta Csernus, Gabriella Gulyás, Csaba Szabó, Ádám Z. Lendvai, Levente Czeglédi
Dátum:2025
Megjegyzések:Under natural conditions, organisms regularly experience seasonal or unpredictable fluctuations in their diet that may shape the quantity and quality of their reproduction. While these dietary shifts are known to influence overall reproductive output, their specific effects on the proportional composition of egg components remain unexplored. To partially simulate the natural conditions, we conducted two trials using adult Japanese Quails (Coturnix japonica) to examine how dietary restriction and unpredictable feeding influence the proportional composition of egg components. In the first trial, quails were assigned to one of four treatments: full-fed (control) or restricted feeding at 20% (DR20), 30% (DR30), and 40% (DR40) below daily intake. In the second trial, quails were assigned to one of three treatments: full feeding (control), constant 40% restriction (DR40), or unpredictable feeding schedule (UNPR). Each trial lasted for 14 days, and birds were housed individually. Severe dietary restrictions (DR30, DR40) reduced albumen and shell mass, shell thickness, and egg volume. However, yolk mass, yolk color, egg shape index, and shell density remained unaffected across all dietary levels. Severe restrictions also increased the yolk ratio while reducing the albumen ratio, suggesting that birds may evolutionarily prioritize yolk deposition to sustain reproductive functions. However, reduced albumen content due to maternal nutritional stress may also limit essential nutrients, and disrupt the embryo's osmoregulation, which ultimately affects offspring quality. Reduced shell contents at the severe restriction levels can affect the egg's ability to provide physical protection, regulate gas exchange and control water loss, thereby influencing embryonic development. In contrast, moderate restriction (DR20) and unpredictable feeding (UNPR) had no effect on any of the egg traits. These findings suggest that quails strategically allocate resources among egg components under dietary constraints, indicating potential trade-offs in reproductive investment. The resilience observed under moderate restriction and unpredictability underscores the species' adaptive capacity in fluctuating environments.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Dietary restriction
Egg components
Japanese Quail
Resource allocation
Unpredictable feeding
Megjelenés:Avian Research. - 16 : 3 (2025), p. 1-12. -
További szerzők:Ndunguru, Sawadi Fransisco (1980-) Knop Renáta (1983-) (állatorvos) Lugata, James Kachungwa (1992-) (Ph.D hallgató) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Gulyás Gabriella (1985-) (agrár) Szabó Csaba (1968-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök)
Pályázati támogatás:K139021
OTKA
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

12.

001-es BibID:BIBFORM122386
035-os BibID:(WoS)001239529900108 (Scopus)85195180757
Első szerző:Reda, Gebrehaweria Kidane (Animal Sceince)
Cím:Author Correction : Dietary restriction reveals sex-specific expression of the mTOR pathway genes in Japanese quails / Gebrehaweria K. Reda, Sawadi F. Ndunguru, Brigitta Csernus, Renáta Knop , James K. Lugata , Csaba Szabó, Levente Czeglédi, Ádám Z. Lendvai
Dátum:2024
ISSN:2045-2322
Megjegyzések:Correction to: Scientific Reports https://doi.org/10.1038/s41598-024-58487-9, published online 09 April 2024 The original version of this Article contained an error in the Data Availability section where, "All data generated or analysed during this study are included in this published article [and its Supplementary Information files]. Upon acceptance of the manuscript, the datasets will be uploaded into a public repository." now reads: "All data analysed during this study are included in this published article on its Supplementary Information files.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok hozzászólás
folyóiratcikk
mammalian target of rapamycin
Megjelenés:Scientific Reports. - 14 : 1 (2024), p. 1. -
További szerzők:Ndunguru, Sawadi Fransisco (1980-) (Author Correction) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Knop Renáta (1983-) (állatorvos) Lugata, James Kachungwa (1992-) (Ph.D hallgató) Szabó Csaba (1968-) (agrármérnök) Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
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