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1.

001-es BibID:	BIBFORM126178
Első szerző:	Achenef, Gashew Mequanint (Phd student)
Cím:	Effect of arginine on Japanese quail performance: Preliminary findings / Mequanint Gashew Achenef, Ádám Lendvai, Levente Czeglédi, Renáta Knop, Csaba Szabó, Gebrehaweria K. Reda, Sawadi F. Ndunguru, Fadella N. Almira
Dátum:	2024
Megjegyzések:	This study investigates the effects of three different feeding regimes (25% arginine supplementation, 25% arginine restriction, and standard National Research Council-recommended feed) and sex on the performance of grower Japanese quail for fourteen days trial. The total number of quail was 151, with 81 females and 70 males. A two-way analysis of variance was performed to evaluate the interaction between feed type and sex on live weight. The results show a significant (p < 0.001) effect of feed treatment on final live weight and body weight gain, while sex did not significantly (p > 0.05) affect final live weight or weight gain. The findings revealed that quail fed with 25% arginine-restricted diet had significantly (p < 0.001) lower live weights (126.99 ? 2.41) compared to those subjected to 25% arginine supplementation (144.05 ? 1.60) and control feed regime (140.6 ? 1.88). Furthermore, no significant (p = 0.74) interaction between feed type and sex on live weight was observed. The results also indicated a significant (p = 0.02) effect of feed type on feed intake. These findings suggest that dietary arginine levels critically influence live weight changes in grower Japanese quail, while sex does not exert a significant impact. The insignificant interaction between feed type and sex indicates that arginine levels affect live weight in a similar way for both males and females. This study provides valuable insights for optimizing dietary arginine levels to enhance live weight, body weight gains and feed intake performance in grower Japanese quail.
ISBN:	978-963-623-106-4
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok előadáskivonat könyvrészlet arginine Japanese quail performance
Megjelenés:	IX. Gödöllői Állattenyésztési Tudományos Nap: Előadások és poszterek összefoglaló kötete = 9th Scientific Day of Animal Breeding in Gödöllő : Book of Abstracts of Presentations and Posters /szerk. Bényi Erzsébet, Bodnár Ákos, Pajor Ferenc, Póti Péter. - p. 54. -
További szerzők:	Lendvai Ádám Zoltán (1977-) (biológus) Czeglédi Levente (1977-) (agrármérnök) Knop Renáta (1983-) (állatorvos) Szabó Csaba (1968-) (agrármérnök) Reda, Gebrehaweria Kidane (1986-) (Phd hallgató) Ndunguru, Sawadi Fransisco (1980-) Almira, Fadella N.
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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2.

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-) (Phd hallgató) 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
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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3.

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-) (Phd hallgató) 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
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:	BIBFORM122386
035-os BibID:	(WoS)001239529900108 (Scopus)85195180757
Első szerző:	Reda, Gebrehaweria Kidane (Phd hallgató)
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-) 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
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5.

001-es BibID:	BIBFORM121717
035-os BibID:	(Scopus)85193923533 (WoS)001229921200001
Első szerző:	Reda, Gebrehaweria Kidane (Phd hallgató)
Cím:	Sex-specific effects of dietary restriction on physiological variables in Japanese quails / Gebrehaweria K. Reda, Sawadi F. Ndunguru, Brigitta Csernus, James K. Lugata, Renáta Knop, Csaba Szabó, Levente Czeglédi, Ádám Z. Lendvai
Dátum:	2024
ISSN:	2045-7758
Megjegyzések:	Nutritional limitation is a common phenomenon in nature that leads to trade-offsamong processes competing for limited resources. These trade-offs are mediatedby changes in physiological traits such as growth factors and circulating lipids.However, studies addressing the sex-specific effect of nutritional deficiency onthese physiological variables are limited in birds. We used dietary restriction tomimic the depletion of resources to various degrees and investigated sex-specificeffects on circulating levels of insulin-like growth factor 1 (IGF-1) and triglyceridesin Japanese quails (Coturnix japonica) subjected to ad libitum, 20%, 30% or 40%restriction of their daily requirement, for 2 weeks. We also explored the associa-tion of both physiological variables with body mass and egg production. While di-etary restriction showed no effects on circulating IGF-1, this hormone exhibiteda marked sexual difference, with females having 64.7% higher IGF-1 levels thanmales. Dietary restriction significantly reduced plasma triglyceride levels in bothsexes. Females showed more than six-fold higher triglyceride levels than males.Triglyceride levels were positively associated with body mass in females whileshowed not association in males. Overall, our findings revealed sex-specific expres-sion of physiological variables under dietary restriction conditions, which coincidewith body size
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk body mass Coturnix japonica IGF-1 nutritional limitation sex difference triglycerides
Megjelenés:	Ecology and Evolution. - 14 : 5 (2024), p. 1-28. -
További szerzők:	Ndunguru, Sawadi Fransisco (1980-) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Lugata, James Kachungwa (1992-) (Ph.D hallgató) Knop Renáta (1983-) (állatorvos) Szabó Csaba (1968-) (agrármérnök) Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:	K139021 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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6.

001-es BibID:	BIBFORM120370
035-os BibID:	(WoS)001199822700036 (Scopus)85189879690
Első szerző:	Reda, Gebrehaweria Kidane (Phd hallgató)
Cím:	Dietary restriction reveals sex-specifc 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:	Limited resources affect an organism's physiology through the conserved metabolic pathway, the mechanistic target of rapamycin (mTOR). Males and females often react differently to nutritional limitation, but whether it leads to differential mTOR pathway expression remains unknown. Recently, we found that dietary restriction (DR) induced significant changes in the expression of mTOR pathway genes in female Japanese quails (Coturnix japonica). We simultaneously exposed 32 male and female Japanese quails to either 20%, 30%, 40% restriction or ad libitum feeding for 14 days and determined the expression of six key genes of the mTOR pathway in the liver to investigate sex differences in the expression patterns. We found that DR significantly reduced body mass, albeit the effect was milder in males compared to females. We observed sex-specific liver gene expression. DR downregulated mTOR expression more in females than in males. Under moderate DR, ATG9A and RPS6K1 expressions were increased more in males than in females. Like females, body mass in males was correlated positively with mTOR and IGF1, but negatively with ATG9A and RS6K1 expressions. Our findings highlight that sexes may cope with nutritional deficits differently and emphasise the importance of considering sexual differences in studies of dietary restriction.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Scientific Reports. - 14 : 1 (2024), p. 1-14. -
További szerzők:	Ndunguru, Sawadi Fransisco (1980-) 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)
Pályázati támogatás:	K139021 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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7.

001-es BibID:	BIBFORM120372
035-os BibID:	(Scopus)85188475659 (WoS)001222859800002
Első szerző:	Reda, Gebrehaweria Kidane (Phd hallgató)
Cím:	Dietary restriction and life-history trade-offs : insights into mTOR pathway regulation and reproductive investment in Japanese quails / Gebrehaweria K. Reda, Sawadi F. Ndunguru, Brigitta Csernus, Gabriella Gulyás, Renáta Knop,Csaba Szabó, Levente Czeglédi, Ádám Z. Lendvai
Dátum:	2024
ISSN:	0022-0949
Megjegyzések:	Resources are needed for growth, reproduction and survival, and organisms must trade-off limited resources among competing processes. Nutritional availability in organisms is sensed and monitored by nutrient-sensing pathways that can trigger physiological changes or alter gene expression. Previous studies have proposed that one such signalling pathway, the mechanistic target of rapamycin (mTOR), underpins a form of adaptive plasticity when individuals encounter constraints in their energy budget. Despite the fundamental importance of this process in evolutionary biology, how nutritional limitation is regulated through the expression of genes governing this pathway and its consequential effects on fitness remains understudied, particularly in birds. We used dietary restriction to simulate resource depletion and examined its effects on body mass, reproduction and gene expression in Japanese quails (Coturnix japonica). Quails were subjected to feeding 20%, 30%, 40% restriction levels or ad libitum for two weeks. All restricted groups exhibited reduced body mass, whereas reductions in the number and mass of eggs were observed only under more severe restrictions. Additionally, dietary restriction led to decreased expression of mTOR and insulin-like growth factor 1 (IGF1), whereas the ribosomal protein S6 kinase 1 (RPS6K1) and autophagy-related genes (ATG9A and ATG5) were upregulated. The pattern in which mTOR respond to restriction was similar to what has been seen in body mass. Regardless of the treatment, proportionally higher reproductive investment was associated with individual variation in mTOR expression. These findings reveal the connection between dietary intake and the expression of mTOR and related genes in this pathway.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal Of Experimental Biology. - 227 : 8 (2024), p. 1-11. -
További szerzők:	Ndunguru, Sawadi Fransisco (1980-) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Gulyás Gabriella (1985-) (agrár) Knop Renáta (1983-) (állatorvos) Szabó Csaba Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:	K139021 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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