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1.

001-es BibID:BIBFORM125933
Első szerző:Astuti, Putri Kusuma (állattenyésztési genetikus)
Cím:Investigating the genetics of tropical climate adaptation in Asian and African indigenous sheep / Putri Kusuma, Astuti; Pradita Iustitia, Sitaresmi; Alek, Ibrahim; Shairah, Abdul Razak; Nelly, Kichamu; Szilvia, Kusza
Dátum:2024
Megjegyzések:Indigenous breeds of livestock have received less attention during the past decade owing to their lower output relative to commercial breeds. Consequently, this population is marginalised and vulnerable to a decline in population size, reduced within-breed genetic diversity, and inbreeding. Nevertheless, considering the persistent challenge of global climate change, it is important to reconsider Indigenous breeds that exhibit superior adaptability as a potential solution. The genomic SNP array has emerged as a powerful tool for studies in animal population genetics. A recent study on genomic variation identified a global pattern of genetic admixture in several livestock species. This advanced methodology facilitates the genomic localisation of genes associated with unique adaptations to specific environmental circumstances. This work aims to provide our research concept, utilising 50K SNP genotypes from Indigenous sheep in Asia and Africa to understand better the fine-scale characterization of its genetic makeup related to adaptability in tropical climates. The findings of this study could be helpful in the development of strategic sheep breeding programs that respond to the requirements of future climate change mitigation initiatives.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:Biotechnológia a Debreceni Egyetemen 2024 Szimpózium : Absztraktfüzet. - p. 49.
További szerzők:Pradita Iustitia, Sitaresmi Alek, Ibrahim Shairah, Abdul Razak Kichamu, Nelly (1978-) (Animal scientist) Kusza Szilvia (1979-) (agrármérnök)
Pályázati támogatás:EKÖP-24-4
Egyéb
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2.

001-es BibID:BIBFORM117361
Első szerző:Astuti, Putri Kusuma (állattenyésztési genetikus)
Cím:Genetics of coat colors and its role in climate change resiliency in sheep / Astuti Kusuma Putri, Sárkány Péter, Wanjala George, Kichamu Nelly, Kusza Szilvia
Dátum:2023
ISSN:2566-431x
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
coat color
genetic and genomics tools
Ovis aries
thermal resistant
Megjelenés:Genetics and Applications: An Aspiring Interdisciplinary Journal of Genetic Research, Speciasl edition, Book of abstracts. - p. 40. -
További szerzők:Sárkány Péter Wanjala, George (1984-) (Animal scientist) Kichamu, Nelly (1978-) (Animal scientist) Kusza Szilvia (1979-) (agrármérnök)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM113832
Első szerző:Astuti, Putri Kusuma (állattenyésztési genetikus)
Cím:Heat Stress: Can Animals be Stressed but still be Healthy? / Putri Kusuma Astuti, Roland Fajardo, George Wanjala, Nelly Kichamu, Husein Ohran, Bouabid Badaoui, Zoltán Bagi, Szilvia Kusza
Dátum:2023
ISSN:1841-9364 2344-4576
Megjegyzések:In this era of rapid climate change, heat stress has emerged as a major problem for sheep farming. The quantity and quality of sheep production, as well as the welfare, are all shown to be negatively impacted by heat stress. Reduced cellular immune function in sheep exposed to high temperatures increases susceptibility to various diseases,although the underlying mechanisms are unclear. The imbalance between oxidants and antioxidants, known as oxidative stress, negatively impacts animal health due to heat stress-induced impairments in immune responses, increased production of reactive oxygen species, and/or a lack of antioxidants. Heat stress in livestock has negative effects on both the cell-mediated and humoral immune responses. However, the negative effects of heat stress on immune response in sheep can vary by breed. This review discusses how heat stress affects sheep's immunity. An overview of some molecular markers related to immunity, such as interleukin (ILs), Toll-like receptors (TLRs), and also the heat stress protein (HSPs) in sheep, is also discussed. Finally, recent researchon the effects of antioxidant supplementation and other promising nutritional strategies for reducing heat stress and improving animal health is presented.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok konferenciacikk
folyóiratcikk
animal health
antioxidant
heat stress
immunity
sheep
Megjelenés:Scientific Papers: Animal Science and Biotechnologies. - 56 : 1 (2023), p. 194-202. -
További szerzők:Fajardo, Roland Wanjala, George (1984-) (Animal scientist) Kichamu, Nelly (1978-) (Animal scientist) Ohran, Husein Badaoui, Bouabid (1979-) (animal genetics engineer) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Kusza Szilvia (1979-) (agrármérnök)
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4.

001-es BibID:BIBFORM129898
Első szerző:Kichamu, Nelly (Animal scientist)
Cím:The Role of Insect-Based Feed in Mitigating Climate Change: Sustainable Solutions for Ruminant Farming / Nelly Kichamu, Putri Kusuma Astuti, Szilvia Kusza
Dátum:2025
ISSN:2075-4450
Megjegyzések:There has been an unprecedented demand for livestock production due to factors such as the ever-increasing population, limited resources (land, water, feed, etc.), and changing human lifestyles. Moreover, due to the interconnected nature of the world`s biodiversity crisis, pollution, and climate change, environmental sustainability is going to play a pivotal role in addressing these pressing issues. Because of their high nutritional value and environmental benefits compared to conventional livestock feeds, insects as animal feed have demonstrated great potential for long-term sustainability. The current state of the IBF application on ruminants is presented in this review, together with its challenges, future direction, and strength-weakness-opportunity-threat analysis. The results from many studies on ruminants have demonstrated that insect nutrients-primarily amino acids, protein, and fat-are highly digestible, safe, and beneficial to ruminant health and productivity. Additionally, they do not harm the ruminant fermentation and microbiota, even having the benefit of possibly lowering ruminant farms` well-known methane emissions. Nevertheless, concerns continue to arise because this method is still relatively new and there is a lot of unexplored knowledge; as a result, regulation is not yet well established globally, which is a barrier to its implementation.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Insects. - 16 : 5 (2025), p. 1-17. -
További szerzők:Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Kusza Szilvia (1979-) (agrármérnök)
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5.

001-es BibID:BIBFORM122766
035-os BibID:(Scopus)85198652941
Első szerző:Kichamu, Nelly (Animal scientist)
Cím:Assessing the population structure and genetic variability of Kenyan native goats under extensive production system / Nelly Kichamu, George Wanjala, Ludovic Toma Cziszter, Péter Strausz, Putri Kusuma Astuti, Zoltán Bagi, Szilvia Kusza
Dátum:2024
ISSN:2045-2322
Megjegyzések:Indigenous goats are important to many livelihoods. Despite this, they are subjected to indiscriminate crossbreeding. This afects their genetic variability which is needed to survive in current regime of climate change. The study assessed population structure and genetic diversity of Galla and Small East African goats (SEA) using pedigree information. A total of 7384 animals, 5222 of the Galla and 2162 of the SEA breeds, born between the years 1983 and 2022, were utilized. Individuals with known parents were defned as reference population. From the results, the maximum generation traced for Galla and SEA populations was 14.6 and 14.5, respectively. However, only 6 and 5 generations for Galla and SEA were complete. Pedigree completeness increased with the increasing number of generations. The average generation interval (GI) for Galla and SEA was 3.84 ± 0.04 and 4.4 ± 0.13 years. The average increase in the rate of inbreeding per generation for Galla and SEA was 0.04 and 0.05, with the efective ancestors and founders (fa/fe) ratio being same (1.00) for both breeds. Fifty percent (50%) of the genetic variability in the populations was contributed by 3 and 1 ancestor for Galla SEA, respectively. The efective population size (Ne) was 5.19 and 4.77 for Galla and SEA. Therefore, the current breeding programs should be changed to avoid future genetic bottlenecks in this population. These fndings ofer an opportunity to enhance the current genetic status and management of Kenyan native goats and other regions with similar production systems.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Scientific Reports. - 14 : 1(2024), p. 1-11. -
További szerzők:Wanjala, George (1984-) (Animal scientist) Cziszter, Ludovic Toma Strausz Péter Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Kusza Szilvia (1979-) (agrármérnök)
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6.

001-es BibID:BIBFORM121782
035-os BibID:(WoS)001254501200001 (Scopus)85197851601
Első szerző:Kichamu, Nelly (Animal scientist)
Cím:A Review on Indigenous Goats of East Africa : A Case for Conservation and Management / Nelly Kichamu, Putri Kusuma Astuti, George Wanjala, Péter Strausz, Zoltán Bagi, Szilvia Kusza
Dátum:2024
ISSN:2079-7737
Megjegyzések:Indigenous goats are important in the livelihoods of rural households in East African countries. This is due to their ability to produce and reproduce in different environments and climatic conditions. Even though these indigenous goats are important, there is little available information on the genetic characterization of these breeds in Africa and at the international level. This paper reviews the status of indigenous goats, highlighting their production systems, phenotypic and genetic characteristics, and genetic diversity, and proposes potential ways for sustainable improvement and conservation in East African countries. Most households use traditional production systems with various uncharacterized goat breeds and ecotypes, which are hence named after the tribe or locality in which they are found. Most of these goats are classified as small East African breeds, with significant variability in morphological features. Some of the challenges to goat production in this region are indiscriminate crossbreeding, lack of pedigree records, parasites and disease incidences, low-quality pastures, and low levels of management. There is a need for a collaborative approach amongst the actors in goat breeding value chains as well as integrating modern genomic tools into breeding programs to enhance selection. This will ensure the resilience and sustainability of these unique indigenous goat populations in East Africa.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
East African goats
genetic characterization
indigenous goats
phenotypic characterization
production systems
population structure
Megjelenés:Biology. - 13 : 6 (2024), p. 1-16. -
További szerzők:Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Wanjala, George (1984-) (Animal scientist) Strausz Péter (1977-) (történész) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Kusza Szilvia (1979-) (agrármérnök)
Pályázati támogatás:Stipendium Hungaricum Program
Tempus
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7.

001-es BibID:BIBFORM120634
Első szerző:Kichamu, Nelly (Animal scientist)
Cím:Inbreeding and inbreeding dilemma in indigenous goats under extensive production systems: a review / Nelly Kichamu, George Wanjala, Putri Kusuma Astuti, Zoltán Bagi, Andrew Mbithi, Szilvia Kusza
Dátum:2024
ISBN:978-963-306-980-6
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:21st Wellmann International Scientific Conference Book of abstracts / felelős kiadó Edit Mikó, szerk. Ingrid Melinda Gyalai, Szilárd Czóbel. - p. 19. -
További szerzők:Wanjala, George (1984-) (Animal scientist) Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Mbithi, Andrew (1989-) (veterinarian) Kusza Szilvia (1979-) (agrármérnök)
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8.

001-es BibID:BIBFORM129638
035-os BibID:(Scopus)105003158632 (WoS)001473869700019
Első szerző:Wanjala, George (Animal scientist)
Cím:Genetic diversity and adaptability of native sheep breeds from different climatic zones / George Wanjala, Zoltán Bagi, Dinu Gavojdian, Bouabid Badaoui, Putri Kusuma Astuti, Alexandru Mizeranschi, Elena Ilisiu, Husein Ohran, Eva Pasic Juhas, Dimitrios Loukovitis, Aldona Kawȩcka, Rūta Šveistienẻ, Zsolt Becskei, Péter Strausz, Nelly Kichamu, Szilvia Kusza
Dátum:2025
ISSN:2045-2322
Megjegyzések:To better understand the genetic architecture and adaptability of native sheep, 22 breeds were genotyped using ovine50K SNP chips. Eleven additional populations from open-source repositories were included. Cross population Extended Haplotype Homozygosity (XP-EHH) and Relative Scaled Haplotype Homozygosity (Rsb) haplotype-based approaches were used to identify genetic variations influencing the adaptation of local sheep breeds to different climatic zones. The results indicate that all breeds exhibited high but declining genetic diversity levels, with a larger proportion of genetic variation explained by development history and refined by geographical origin, as shown by principal component analysis and Neighbor Net graphs. Admixture analysis revealed high admixture levels in European and North African breeds. Using XP-EHH and Rsb methods, 371 genes were putatively under selection, with only nine common among all population pairs, highlighting unique adaptability. Most identified genes, including Interleukin (IL) and cluster differentiation (CD) gene families underlie immune responses, emphasizing their role in resilience to climate change effects. These findings support that indigenous sheep breeds have retained significant genetic diversity, but improper genetic management may threaten it. Additionally, the research emphasizes that indigenous sheep breeds' unique adaptability to specific climatic zones makes them valuable genetic assets for developing climate-resilient breeds.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Scientific Reports. - 15 : 14143 (2025), p. 1-13. -
További szerzők:Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Gavojdian, Dinu Badaoui, Bouabid (1979-) (animal genetics engineer) Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Mizeranschi, Alexandru Eugeniu Ilisiu, Elena Ohran, Husein Pasic Juhas, Eva Loukovitis, Dimitrios Kawęcka, Aldona Šveistienẻ, Rūta Becskei Zsolt Strausz Péter Kichamu, Nelly (1978-) (Animal scientist) Kusza Szilvia (1979-) (agrármérnök)
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9.

001-es BibID:BIBFORM118325
Első szerző:Wanjala, George (Animal scientist)
Cím:Eco-regional influence on genetic diversity, population structure, and signatures of selection of indigenous sheep in Kenya / George Wanjala, Putri Astuti Kusuma, Nelly Kichamu, Kusza Szilvia
Dátum:2021
ISBN:978-963-490-351-2
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:Biotechnológia a Debreceni Egyetemen. Fókuszban az agrár- és élelmiszerbiotechnológia : Tudományos Szimpózium elődás összefoglalók. - p. 46-47. -
További szerzők:Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Kichamu, Nelly (1978-) (Animal scientist) Kusza Szilvia (1979-) (agrármérnök)
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10.

001-es BibID:BIBFORM118266
Első szerző:Wanjala, George (Animal scientist)
Cím:Assessing Genomic Inbreeding and Homozygosity Patterns in Hungarian Merino Sheep and its Relatives / George Wanjala, Putri Kusuma Astuti, Nelly Kichamu, Zoltán Bagi, Szilvia Kusza
Dátum:2023
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Genetic diversity
Hungary
Inbreeding coefficient
Merino
Sheep
SNP Markers
Megjelenés:Scientific Papers: Animal Science and Biotechnologies. - 56 : 1 (2023), p. 47-52. -
További szerzők:Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Kichamu, Nelly (1978-) (Animal scientist) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Kusza Szilvia (1979-) (agrármérnök)
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11.

001-es BibID:BIBFORM109206
035-os BibID:(WoS)000954097600001 (Scopus)85152367636
Első szerző:Wanjala, George (Animal scientist)
Cím:Assessing the genomics structure of Dorper and White Dorper Variants, and Dorper Populations in South Africa and Hungary / George Wanjala, Putri Kusuma Astuti, Zoltán Bagi, Nelly Kichamu, Péter Strausz, Szilvia Kusza
Dátum:2023
ISSN:2079-7737
Megjegyzések:Simple Summary: The Dorper sheep breed was created to thrive in harsh environments in South Africa. Two breed variants were developed in the selection process. The breed gained popularity and was exported to several regions of the world where it is reported to be doing better than the purported locally adapted sheep breeds. To enhance the performance of other native sheep breeds, Dorper is widely utilized in crossbreeding with native breeds. There has not been any research done to examine the genomic status of Dorper in South Africa and Dorper in other places outside of South Africa. The genomic architecture of white Dorper and Dorper from South Africa and Hungary are compared in this study. White Dorper, Dorper, and Dorpers from South Africa and Hungary all have significantly distinct genomes. Different environmental factors and variations in coat color could be the cause of the genetic variations. Abstract: Dorper sheep was developed for meat production in arid and semi-arid regions under extensive production systems in South Africa. Two variants with distinct head and neck colors were bred during their development process. White Dorper have a white coat while Dorper have a black head and neck. Both variants have grown in popularity around the world. Therefore, understanding the genomic architecture between South African Dorpers and Dorper populations adapted to other climatic regions, as well as genomic differences between Dorper and White Dorper variants is vital for their molecular management. Using the ovine 50K SNP chip, this study compared the genetic architecture of Dorper variants between populations from South Africa and Hungary. The Dorper populations in both countries had high genetic diversity levels, although Dorper in Hungary showed high levels of inbreeding. White Dorpers from both countries were genetically closely related, while Dorpers were distantly related according to principal component analysis and neighbor-joining tree. Additionally, whereas all groups displayed unique selection signatures for local adaptation, Dorpers from Hungary had a similar linkage disequilibrium decay. Environmental differences and color may have influenced the genetic differentiation between the Dorpers. For their molecular management and prospective genomic selection, it is crucial to understand the Dorper sheep`s genomic architecture, and the results of this study can be interpreted as a step in this direction.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
adaptation
dorper
genetic diversity
linkage disequilibrium
management best practices
population structure
Megjelenés:Biology. - 12 : 3 (2023), p. 1-11. -
További szerzők:Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Bagi Zoltán (1987-) (természetvédelmi mérnök, állatgenetika) Kichamu, Nelly (1978-) (Animal scientist) Strausz Péter Kusza Szilvia (1979-) (agrármérnök)
Internet cím:DOI
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12.

001-es BibID:BIBFORM107113
035-os BibID:(Scopus)85147874170 (WoS)000935726900001
Első szerző:Wanjala, George (Animal scientist)
Cím:On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds / George Wanjala, Nelly Kichamu, Péter Strausz, Putri Kusuma Astuti, Szilvia Kusza
Dátum:2023
ISSN:1751-7311 1751-732X
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Animal. - 17 : 3 (2023), p. 1-6. -
További szerzők:Kichamu, Nelly (1978-) (Animal scientist) Strausz Péter Astuti, Putri Kusuma (1994-) (állattenyésztési genetikus) Kusza Szilvia (1979-) (agrármérnök)
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