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Articles 1 - 30 of 5314
Full-Text Articles in Animal Sciences
Molecular Characterization Of Pasteurella Multocida Capsular Type A Strains Isolated From Different Regions Of Anatolia, Türkiye, Adam Bashir Tawor, Osman Ergani̇ş, Asli Balevi̇, Suliman Mohamed Yousof Sadam
Molecular Characterization Of Pasteurella Multocida Capsular Type A Strains Isolated From Different Regions Of Anatolia, Türkiye, Adam Bashir Tawor, Osman Ergani̇ş, Asli Balevi̇, Suliman Mohamed Yousof Sadam
Turkish Journal of Veterinary & Animal Sciences
Pasteurella multocida serotype A is an important pathogen that causes respiratory illness in both farm animals and poultry, leading to severe economic losses worldwide. This study aimed to isolate P. multocida capsular type A (capA) as well as investigate the virulence-associated genes (VAGs) within the isolates. Samples (n = 250) were collected in the Anatolia region from cattle (n = 130), sheep (n = 70), goats (n = 45), and pet birds (n = 5) with clinical respiratory signs. Polymerase chain reaction (PCR) assays were conducted using kmt1 and capA primers for P. multocida species identification and capsular serogroup A …
Trace Elements In Complete Feeds Used In Intensive Rearing Of Cattle, Poultry, And Pigs: Occurrence And Predicted Transferred Concentrations In Animal-Derived Food, Elizabeta Dimitrieska Stojkovikj, Vangelica Enimiteva, Aleksandra Angjeleska, Risto Uzunov
Trace Elements In Complete Feeds Used In Intensive Rearing Of Cattle, Poultry, And Pigs: Occurrence And Predicted Transferred Concentrations In Animal-Derived Food, Elizabeta Dimitrieska Stojkovikj, Vangelica Enimiteva, Aleksandra Angjeleska, Risto Uzunov
Turkish Journal of Veterinary & Animal Sciences
This study investigated the concentrations of essential (Zn, Cu, Mn, Co, and Mo) and toxic (Pb, Cd, As, and Hg) trace elements in complete feeds used for the intensive rearing of cattle, poultry, and pigs in North Macedonia and predicted their transfer into animal-derived foods. A total of 107 feed samples were collected from 40 farms between May 2023 and April 2024 and analyzed using inductively coupled plasma mass spectrometry. The results revealed that while most essential elements were within the regulatory limits, Co exceeded the maximum level in two cattle feed samples. Zn, Cu, and Mn levels were generally …
Effect Of Rangeland Quality On Rumen Development Of Angora (Mohair) Goat Kids And Bucks, Betül Zehra Sariçi̇çek
Effect Of Rangeland Quality On Rumen Development Of Angora (Mohair) Goat Kids And Bucks, Betül Zehra Sariçi̇çek
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to determine the effect of rangeland quality on the rumen development of Angora goat kids and bucks. Twenty male singleton Angora goat kids with similar birth dates and birth weights were selected from each farm in an area with three different rangeland quality levels (good, medium, or poor) in Ankara Province. The kids were weaned at 60 days of age and then grazed completely on rangeland until slaughter. Rumen volumetric and papillary development of animals slaughtered at 4 and 7 months of age were determined. Empty rumen length, width, and weight were affected by rangeland quality …
Arterial Architecture Of The Goat Spleen (Capra Hircus) Revealed By Corrosion Casting And Scanning Electron Microscopy, Baran Erdem, Sevi̇nç Ateş, Meryem Karan
Arterial Architecture Of The Goat Spleen (Capra Hircus) Revealed By Corrosion Casting And Scanning Electron Microscopy, Baran Erdem, Sevi̇nç Ateş, Meryem Karan
Turkish Journal of Veterinary & Animal Sciences
The spleen is an essential organ involved in hematopoietic and immune functions. A comprehensive understanding of its anatomy, including vascular topography and segmentation, is essential for the accurate diagnosis and treatment of splenic diseases, and the minimization of complications during surgical procedures. Detailed knowledge of the vascular architecture also supports the accurate prediction and management of hemorrhage severity in cases of splenic rupture. The spleen’s microvascular system has a unique and complex organization that is distinct from other organs, and its elucidation is critical for understanding splenic function. In the present study, the spleens of 20 hair goats were examined. …
Hard Palate Morphology In The Anatolian Water Buffalo (Bubalus Bubalis), Mehmet Can, Şükrü Hakan Atalgin, Mehmet Faruk Aydin, Soner Bekmezci̇
Hard Palate Morphology In The Anatolian Water Buffalo (Bubalus Bubalis), Mehmet Can, Şükrü Hakan Atalgin, Mehmet Faruk Aydin, Soner Bekmezci̇
Turkish Journal of Veterinary & Animal Sciences
This study aimed to examine the morphological and histological features of the hard palate in the Anatolian water buffalo through light and scanning electron microscopy, complemented by gross and morphometric evaluations. Eight hard palates were used in the study. A total of eight Anatolian water buffalo heads from healthy adult female water buffaloes were collected immediately after slaughter from various slaughterhouses in Balıkesir, Türkiye. After analyzing and identifying the obtained hard palate samples, measurements were taken and documented through photography. The papilla incisiva, located in the middle of the caudal concave edge on the ventral surface of the pulvinus dentalis, …
Nonmarine Ostracods Of Northern Cyprus: Diversity, Ecology, And Global Island Comparisons, Ahmet Özdi̇lek, Okan Külköylüoğlu
Nonmarine Ostracods Of Northern Cyprus: Diversity, Ecology, And Global Island Comparisons, Ahmet Özdi̇lek, Okan Külköylüoğlu
Turkish Journal of Zoology
There is a notable paucity of detailed information regarding the distribution and ecological characteristics of nonmarine Ostracoda in Northern Cyprus. Furthermore, a comprehensive assessment of their distribution across islands in the Northern and Southern Hemispheres is incomplete. To advance our understanding of ostracod diversity, distribution, and ecological preferences, a total of 79 aquatic sites in Northern Cyprus were randomly sampled between 18 May and 12 August 2022. A total of 64 ostracod taxa were identified, comprising 28 living species and 36 subfossils, with 18 species representing new records for the island. Additionally, five ostracod species were reported for the first …
Dietary Stability Of The Eurasian Beaver Revealed By Hair Stable Isotopes, Linas Balčiauskas, Rasa Vaitkevičiūtė Koklevičienė, Andrius Garbaras, Inga Garbarienė, Laima Balčiauskienė
Dietary Stability Of The Eurasian Beaver Revealed By Hair Stable Isotopes, Linas Balčiauskas, Rasa Vaitkevičiūtė Koklevičienė, Andrius Garbaras, Inga Garbarienė, Laima Balčiauskienė
Turkish Journal of Zoology
The Eurasian beaver (Castor fiber) is a keystone ecosystem engineer whose expanding populations increasingly occupy agricultural landscapes. Hair stable isotope analysis was applied to reconstruct assimilated diet in 56 legally hunted beavers in Lithuania in 2024–2025. Stable carbon isotope values were tightly clustered (–25.53 ± 0.10‰ SE), while those for nitrogen showed greater variability (5.38 ± 0.20‰ SE), indicating limited interindividual dietary differentiation. Generalized linear models revealed no significant effects of sex, year, or month, and age-related differences were limited to the youngest individuals. Comparison with published Polish data showed no significant differences in mean isotope values. Overall, the results …
From Introduction To Biomass Dominance: The Invasive Fish Striped Piggy (Pomadasys Stridens) Reshaping Demersal Assemblages In The Eastern Mediterranean, Mehmet Cengi̇z Deval
From Introduction To Biomass Dominance: The Invasive Fish Striped Piggy (Pomadasys Stridens) Reshaping Demersal Assemblages In The Eastern Mediterranean, Mehmet Cengi̇z Deval
Turkish Journal of Zoology
Rapid increases in the abundance and biomass of nonindigenous species have the potential to profoundly reshape demersal fish assemblages in the Eastern Mediterranean Sea, yet quantitative evidence from long-term standardized surveys remains scarce. In the present study, temporal changes in biomass dynamics and community structure were assessed using fishery-independent trawl surveys conducted on the continental shelf of Antalya Bay (GSA 24) during two periods a decade apart (2009–2010 and 2020–2021), with particular focus on the Lessepsian striped piggy Pomadasys stridens. Based on the second survey, in which both daytime and nocturnal sampling were conducted, the biomass index (BI) differed significantly …
Comparative Cytogenetics Of Four Phelsuma Species: Insights Into Chromosome Evolution In Malagasy Gekkonidae, Marcello Mezzasalma, Gaetano Odierna, Fabio Maria Guarino, Elvira Brunelli
Comparative Cytogenetics Of Four Phelsuma Species: Insights Into Chromosome Evolution In Malagasy Gekkonidae, Marcello Mezzasalma, Gaetano Odierna, Fabio Maria Guarino, Elvira Brunelli
Turkish Journal of Zoology
Karyotype diversification and chromosome mutations (or macromutations) such as inversions, fusions, and fissions represent understudied factors of biological evolution. We present in this study one of the first experimental cytogenetic analyses on the Malagasy day geckos of the genus Phelsuma. A molecular analysis was performed using a trait of the mitochondrial 12S and a comparative chromosome study with traditional Giemsa coloration, Ag-NOR staining and sequential C-banding (C-banding + Giemsa + fluorochromes) on nine individuals of Phelsuma from different localities. The molecular analysis allowed unambiguous identification of three species (P. lineata, P. laticauda, and P. standingi), while two additional samples likely …
Comparative Efficacy Of Controlled Internal Drug Release And Medroxyprogesterone Acetate Sponges On Ovulatory Follicle Growth In The Ovsynch Protocol During The Breeding Season In Cyclic Nili Ravi Buffaloes, Muhammad Binyameen, Ali Husnain, Saba Anwar, Muhammad Waseem, Muhammad Saleem
Comparative Efficacy Of Controlled Internal Drug Release And Medroxyprogesterone Acetate Sponges On Ovulatory Follicle Growth In The Ovsynch Protocol During The Breeding Season In Cyclic Nili Ravi Buffaloes, Muhammad Binyameen, Ali Husnain, Saba Anwar, Muhammad Waseem, Muhammad Saleem
Turkish Journal of Veterinary & Animal Sciences
The objective of the experiment was to compare the dominant follicle size, growth rate of the dominant follicle, estrus response, plasma progesterone concentration, and pregnancy in Nili Ravi buffaloes synchronized by controlled internal drug release (CIDR; 1.38 g) and medroxyprogesterone acetate sponge (MPAS; 250 mg) in the ovulation synchronization (OvSynch) protocol. The experiment had a randomized complete block design. Buffaloes (n = 42) were blocked by parity, body weight, body condition score, and ovarian status, and, within the block, they were randomized to receive either CIDR or MPAS and that day was considered day 0 of the experiment. On days …
Origins Of Mitochondrial Diversity In Turkish Sheep Breeds: Anatolia As A Contact Zone Or Refugial Center?, Nezi̇h Ata, İbrahi̇m Cemal
Origins Of Mitochondrial Diversity In Turkish Sheep Breeds: Anatolia As A Contact Zone Or Refugial Center?, Nezi̇h Ata, İbrahi̇m Cemal
Turkish Journal of Veterinary & Animal Sciences
Advances in molecular genetics, especially the integration of mitochondrial DNA (mtDNA) analyses, have significantly transformed our understanding of the origins, geographical centers, and dispersal dynamics of domestication, a field traditionally based on archaeological and morphological evidence. In this study, the mtDNA control-region sequences of 296 individuals from 15 native Turkish sheep breeds were analyzed to clarify their maternal genetic diversity and evolutionary origins. Sequencing of a 531-bp D-loop fragment revealed 53 polymorphic sites and 78 distinct haplotypes, indicating substantial haplotypic diversity (Hd = 0.918) and nucleotide diversity (π = 0.01391) within these populations. All five major ovine mitochondrial haplogroups (A, …
The In Vitro Feeding Of Hyalomma Marginatum (Koch, 1844), Nesli̇han Ölmez, Bariş Sari, Zati̇ Vatansever
The In Vitro Feeding Of Hyalomma Marginatum (Koch, 1844), Nesli̇han Ölmez, Bariş Sari, Zati̇ Vatansever
Turkish Journal of Veterinary & Animal Sciences
Ticks are obligate hematophagous ectoparasites that play a major role in the transmission of pathogens affecting both animals and humans. Investigations into tick biology, pathogen transmission, and the development of effective control strategies have traditionally depended on the extensive use of laboratory animals. Consequently, the development of reliable in vitro feeding systems is a valuable alternative approach with the potential to reduce animal use in tick research. In the present study, a previously described silicone membrane artificial feeding system was modified and applied for the in vitro feeding of Hyalomma marginatum (Koch, 1844). Feeding units were prepared using bovine blood …
Immunohistochemical Expression Of Lgr5 In The Bovine Ovary, Oviduct, And Uterus, Aytül Kürüm, Yasi̇n Özkabadayi, Hakan Kocamiş, Mustafa Türk, Si̇yami̇ Karahan
Immunohistochemical Expression Of Lgr5 In The Bovine Ovary, Oviduct, And Uterus, Aytül Kürüm, Yasi̇n Özkabadayi, Hakan Kocamiş, Mustafa Türk, Si̇yami̇ Karahan
Turkish Journal of Veterinary & Animal Sciences
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) has recently been considered as a stem cell marker seen especially in mitotically active tissues. The aim of the present study was to investigate the immunohistochemical expression of LGR5 in the bovine reproductive tract, which is regularly renewed in response to hormonal changes throughout the estrous cycle. The oviduct (ampulla, isthmus, and fimbria), uterus, and ovary tissue samples were collected from 12 cows at a local slaughterhouse. The samples were further identified as follicular (n = 6) or luteal (n = 6), subjected to routine histological procedures, and processed for immunohistochemical expression of …
Determination Of Hematobiochemical Parameters And Egg Quality Traits Of Turkish Sultan Chickens, Mehmet Naci̇ Oktay, Ruhi̇ Kabakçi, Ali̇ Karapinar, Gökhan Şen, Taha Altuğ, Yasi̇n Şenel
Determination Of Hematobiochemical Parameters And Egg Quality Traits Of Turkish Sultan Chickens, Mehmet Naci̇ Oktay, Ruhi̇ Kabakçi, Ali̇ Karapinar, Gökhan Şen, Taha Altuğ, Yasi̇n Şenel
Turkish Journal of Veterinary & Animal Sciences
The present study aimed to investigate the hematological and biochemical blood parameters, along with selected egg quality traits, of Turkish Sultan chickens. A total of 90 blood samples collected from 60-week-old hens and roosters and 129 eggs collected from 50 hens were analyzed. The findings showed that hematological parameters such as red blood cells (RBC), hemoglobin (HGB), packed cell volume (PCV), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and heterophil-to-lymphocyte (H/L) ratio, as well as biochemical markers such as aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and uric acid levels, were significantly higher in roosters. The average egg weight, shape …
Comparison Of Bacteriological Culture And A Multiplex Real-Time Pcr Kit For The Detection Of Mastitis Pathogens In Small Ruminants, Ebru Karakaya Bi̇len, Serpi̇l Kahya Demi̇rbi̇lek, Bariş Güner, Öznur Yilmaz Koç, Ali̇ Ünver, Merve Yildiz, İrem Çakmak, Abdulkadi̇r Keski̇n
Comparison Of Bacteriological Culture And A Multiplex Real-Time Pcr Kit For The Detection Of Mastitis Pathogens In Small Ruminants, Ebru Karakaya Bi̇len, Serpi̇l Kahya Demi̇rbi̇lek, Bariş Güner, Öznur Yilmaz Koç, Ali̇ Ünver, Merve Yildiz, İrem Çakmak, Abdulkadi̇r Keski̇n
Turkish Journal of Veterinary & Animal Sciences
This study aimed to evaluate the applicability of a multiplex real-time PCR (rPCR) kit, originally developed for bovine mastitis, for detecting mastitis pathogens in small ruminants and reducing bacterial identification time compared with conventional bacteriological culture (BC). Milk samples were obtained from 175 sheep and 124 goats and included cases of clinical mastitis (n = 57) and subclinical mastitis (n = 242). With BC, bacterial growth was detected in 125 of 299 milk samples (41.8%), yielding a total of 169 bacterial isolates. The pathogens most frequently isolated by BC were coagulase-negative staphylococci (58.0%), followed by Streptococcus spp. (9.4%), Staphylococcus aureus …
Patterns And Drivers Of Cladocera Community Structure In The Black Sea, Elena Bisinicu, Luminita Lazar
Patterns And Drivers Of Cladocera Community Structure In The Black Sea, Elena Bisinicu, Luminita Lazar
Turkish Journal of Zoology
Cladoceran community dynamics were examined in the Romanian sector of the Black Sea during the warm seasons of 2013– 2020, using Marine Reporting Units (MRUs) to evaluate spatial heterogeneity across transitional, coastal, and marine waters. Analyses of density, biomass, mean individual biomass (MIB), and species composition revealed interannual fluctuations superimposed on strong nearshore–offshore gradients, with higher values in transitional and coastal MRUs. The assemblage was consistently dominated by Pleopis polyphemoides and Penilia avirostris, which together accounted for most of the total abundance and biomass. Multivariate analysis identified significant differences in taxonomic composition across MRUs and years, while correlation analyses highlighted …
Endemism Patterns Of Leaf Beetles (Coleoptera: Chrysomelidae) In Türkiye, İsmai̇l Şen, Ali̇ Gök
Endemism Patterns Of Leaf Beetles (Coleoptera: Chrysomelidae) In Türkiye, İsmai̇l Şen, Ali̇ Gök
Turkish Journal of Zoology
In this study, the distribution of endemic leaf beetles in Türkiye was analyzed holistically at the provincial scale using species richness (ENR), corrected weighted endemism (CWE), and range-restricted endemism (RRE) indices. A total of 95 endemic taxa were found in Türkiye and these taxa exhibited significant spatial heterogeneity in terms of richness and extent of distribution. The Western and Central Taurus Mountains and the Eastern Black Sea Region were found to be the main centers of endemism, with high densities of narrowly distributed and geographically restricted species. These patterns clearly demonstrate that key biogeographic factors, such as steep elevation gradients, …
Dynamics Of Ant Activity Under Extreme Climatic Changes In 2024: Effects Of Temperature And Humidity On Formica Rufa And Lasius Fuliginosus Behavior, Stanislav Stukalyuk, Mykola Kozyr, Vira Balabukh
Dynamics Of Ant Activity Under Extreme Climatic Changes In 2024: Effects Of Temperature And Humidity On Formica Rufa And Lasius Fuliginosus Behavior, Stanislav Stukalyuk, Mykola Kozyr, Vira Balabukh
Turkish Journal of Zoology
Global warming and extreme heatwaves, which can alter species distribution and ecosystem dynamics, have profound effects on forest ants. This study investigated the impact of summer and autumn 2024 heatwaves on the activity, prey transport, and nest-building of Formica rufa Linnaeus, 1761 and Lasius fuliginosus (Latreille, 1798) in deciduous forests of Kyiv, Ukraine. Fieldwork was conducted from June to September 2024 in Holosiyivo Forest and the Feofaniya tract. Ant colonies were assigned to experimental plots, where logs were placed along foraging trails, or to control plots with unmanipulated ground-floor trails. The study included 10 F. rufa anthills for activity monitoring …
The Effect Of Spatial Scale Of Habitat On Abundance Of Roe Deer (Capreolus Pygargus) And Water Deer (Hydropotes Inermis Argyropus) During Summer In South Korea, Naeyoung Kim, Hyejin Kim, Hyoun-Gi Cha, Hyun-Su Hwang
The Effect Of Spatial Scale Of Habitat On Abundance Of Roe Deer (Capreolus Pygargus) And Water Deer (Hydropotes Inermis Argyropus) During Summer In South Korea, Naeyoung Kim, Hyejin Kim, Hyoun-Gi Cha, Hyun-Su Hwang
Turkish Journal of Zoology
Understanding species-specific habitat preferences provides essential ecological information about interactions among habitat components. In South Korea, roe deer (Capreolus pygargus) and water deer (Hydropotes inermis argyropus) are the dominant large herbivorous mammals of the family Cervidae. The increasing populations of these species have led to ecological and economic challenges. Therefore, we investigated the effects of spatial scale characteristics on the habitat preferences of roe deer and water deer. From June to August each year between 2021 and 2023, we calculated the relative abundance index (RAI) using camera-trap data and analyzed patch characteristics in the study area using remote sensing techniques, …
The Ecotoxicological Impact Of Polystyrene On Lissachatina Fulica: A Study Of Growth, Pedal Mucus Histological Changes, And Protein Mucus Analysis, Atin Supiyani, Wasmen Manalu, Lina Noviyanti Sutardi, Mawar Subangkit, Andriyanto Andriyanto
The Ecotoxicological Impact Of Polystyrene On Lissachatina Fulica: A Study Of Growth, Pedal Mucus Histological Changes, And Protein Mucus Analysis, Atin Supiyani, Wasmen Manalu, Lina Noviyanti Sutardi, Mawar Subangkit, Andriyanto Andriyanto
Turkish Journal of Zoology
Lissachatina fulica mucin can be used as a nutraceutical agent depending on the quality of their feed. Polystyrene (PS) waste harms soil and plants consumed by snails, potentially affecting the quality of mucin production. This study investigated the impact of PS on growth and mucus-producing cell characteristics as well as the network pharmacology of mucin protein components. Fifty 5–6 cm L. fulica snails (20–24 g) were fed organic waste (OW) and organic waste with PS (OWPS). After 28 days of ad libitum access to food, the snails’ mucus, meat, and shells were collected and weighed. Tissue samples from the anterior …
Effects Of Gnrh And Hcg Administration On Conception Rate And The Subsequent Estrous Cycle On Day 12 Following Artificial Insemination In Holstein Cows, Mustafa Hi̇lmi̇ Yaranoğlu, Hüseyi̇n Erdem
Effects Of Gnrh And Hcg Administration On Conception Rate And The Subsequent Estrous Cycle On Day 12 Following Artificial Insemination In Holstein Cows, Mustafa Hi̇lmi̇ Yaranoğlu, Hüseyi̇n Erdem
Turkish Journal of Veterinary & Animal Sciences
The present study investigates the effects of gonadotropin-releasing hormone (GnRH) and human chorionic gonadotropin administration on the conception rate of cows 12 days after artificial insemination (AI). Included in the study were 150 high milkyielding Holstein cows housed under the same husbandry and feeding conditions. All had calved at least once between the ages of 2.5 and 6 years, and were between 90 and 220 days in milk. In accordance with the farm’s reproductive management approach, a controlled internal drug release (CIDR) device was inserted into the vagina concurrent with a GnRH injection (day 0), and the device was removed …
Effects Of Preslaughter Fasting On Ph And Bacterial Contamination In Akkaraman And Anatolian Merino Sheep, Sai̇m Boztepe, Özcan Şahi̇n, Talha Demi̇rci̇, Gi̇zem Coşkun, İbrahi̇m Ayteki̇n, İsmai̇l Keski̇n
Effects Of Preslaughter Fasting On Ph And Bacterial Contamination In Akkaraman And Anatolian Merino Sheep, Sai̇m Boztepe, Özcan Şahi̇n, Talha Demi̇rci̇, Gi̇zem Coşkun, İbrahi̇m Ayteki̇n, İsmai̇l Keski̇n
Turkish Journal of Veterinary & Animal Sciences
The present study investigates the effects of the preslaughter fasting on pH and bacterial contamination in Akkaraman and Anatolian Merino sheep. Included in the study were 10 Akkaraman and 10 Anatolian Merino sheep (n = 20) that were fasted for 24 h prior to slaughter, and a further 10 Akkaraman and 10 Anatolian Merino sheep (n = 20) that continued to be fed until slaughter as a control group. The total mesophilic aerobic bacteria (TMAB) measured at 0 and 24 h in the fasting Akkaraman and Anatolian Merino sheep were 4.87/4.79 and 4.75/5.57 log CFU/g, respectively, and the corresponding Enterobacteriaceae …
The Effects Of Sodium Perborate Tetrahydrate On Digestibility And Nutrient Transporters In Rats, Büşra Özmen, Emre Şahi̇n, Muhammed Tokmak, Veysi̇ Kayri̇, Ramazan Özmen, Kazi̇m Şahi̇n
The Effects Of Sodium Perborate Tetrahydrate On Digestibility And Nutrient Transporters In Rats, Büşra Özmen, Emre Şahi̇n, Muhammed Tokmak, Veysi̇ Kayri̇, Ramazan Özmen, Kazi̇m Şahi̇n
Turkish Journal of Veterinary & Animal Sciences
Boron (B) is an essential micronutrient involved in hormone activity, energy metabolism, antioxidant defense, bone development, wound healing, and immune function. The present study explores the effects of sodium perborate tetrahydrate (SPT) on nutrient digestibility and the modulation of specific nutrient transporters in the jejunum and ileum of rats. A total of 40 rats were divided into four equal groups: 1) control, 2) SPT 0.5 (0.5 mg B/kg body weight [BW]), 3) SPT 1 (1 mg B/kg BW), and 4) SPT 2 (2 mg B/kg BW), and were fed the respective diets for a period of 4 weeks. The digestibility …
Morphology And Histology Of The Developing Ovary In Malaysian Village Chicken (Gallus Gallus Domesticus) Chicks, Nur Athirah Lope Abdul Rashid, Mazlina Mazlan, Intan Shameha Abdul Razak, Rozaini Mohd Zohdi, Awang Hazmi Awang Junaidi
Morphology And Histology Of The Developing Ovary In Malaysian Village Chicken (Gallus Gallus Domesticus) Chicks, Nur Athirah Lope Abdul Rashid, Mazlina Mazlan, Intan Shameha Abdul Razak, Rozaini Mohd Zohdi, Awang Hazmi Awang Junaidi
Turkish Journal of Veterinary & Animal Sciences
The Malaysian village chicken (MVC; Gallus gallus domesticus) is an indigenous breed derived from the red junglefowl (Gallus gallus), exhibiting slower growth and reproductive rates. The MVC plays an important ecological role in local farming systems and represents a valuable genetic resource. However, detailed information on ovarian development in this breed remains limited. This study provides the first comprehensive morphological and histological characterization of the developing ovary in MVC chicks. A total of 20 chicks aged 1, 2, 4, and 8 weeks (n = 5 per age group) were examined. These MVC chicks possessed a single functional left ovary positioned …
Age-Related Estimates Of Genetic Parameters For Growth And Ultrasonic M. Longissimus Thoracis Et Lumborum Muscle Traits In Eşme Lambs, İbrahi̇m Cemal, Orhan Karaca, Onur Yilmaz, Nezi̇h Ata
Age-Related Estimates Of Genetic Parameters For Growth And Ultrasonic M. Longissimus Thoracis Et Lumborum Muscle Traits In Eşme Lambs, İbrahi̇m Cemal, Orhan Karaca, Onur Yilmaz, Nezi̇h Ata
Turkish Journal of Veterinary & Animal Sciences
The growth performance and ultrasonic M. longissimus thoracis et lumborum (LTL) muscle traits of 2397 Eşme lambs raised in the Eşme district of Uşak province, an important lamb production area in Western Anatolia, were evaluated at 3 months (n = 1690) and 5 months (n = 707) of age. The average age of the lambs at the time of the first measurement (at weaning) was 100.15 days, and 152.37 days at the second. At 3 months of age, the average live weight (LW) was 29.34 kg and the average daily gain (ADG) was 248.35 g/day. By month 5, the LW …
Housing System And Gender Effect On Carcass And Meat Quality Characteristics In Turkish Pekin Ducks, Hasan Önder, Uğur Şen, Mi̇ne Yilmaz, Si̇bel Bozkurt, Eli̇f Ci̇lavdaroğlu, Di̇lek Gökçek, Ahmet Uçar, Kadi̇r Erensoy, Burcu Kurnaz
Housing System And Gender Effect On Carcass And Meat Quality Characteristics In Turkish Pekin Ducks, Hasan Önder, Uğur Şen, Mi̇ne Yilmaz, Si̇bel Bozkurt, Eli̇f Ci̇lavdaroğlu, Di̇lek Gökçek, Ahmet Uçar, Kadi̇r Erensoy, Burcu Kurnaz
Turkish Journal of Veterinary & Animal Sciences
Improving meat quality is one of the most important aims for scientists and breeders. This study aimed to evaluate the effects of housing system (indoor vs. free-range) and gender on carcass and meat quality traits in Pekin ducks. The animal material consisted of 20 male and 20 female birds in each housing system. Our results show cold carcass weights of 3174.10 ± 80.65 g and 2672.60 ± 59.63 g for male and female birds in the indoor housing system and 2821.10 ± 50.53 g and 2306.90 ± 43.32 g for male and female birds in the free-range housing system. The …
Nonnative Crayfish In Türkiye: Presence Records, Invasion Pathways, And Ecological Risks, Muzaffer Mustafa Harlioğlu
Nonnative Crayfish In Türkiye: Presence Records, Invasion Pathways, And Ecological Risks, Muzaffer Mustafa Harlioğlu
Turkish Journal of Zoology
The globalization of trade, aquaculture, and the ornamental pet industry has accelerated the transboundary movement of nonnative crayfish species, with significant ecological consequences. Türkiye, a biodiversity-rich country bridging Europe and Asia, has increasingly become a point of concern due to the rising presence of alien crayfish taxa introduced primarily via the aquarium trade and scientific research. This study investigates the presence records of nonnative crayfish species in Türkiye, identifies their likely introduction pathways, and outlines potential future outspread routes across the major freshwater basins of the country. Species such as Procambarus clarkii, Cherax quadricarinatus, C. albertisii, and Cambarellus patzcuarensis have …
Stage-Specific Growth Characteristics Of The Calanoid Copepod Invader Sinodiaptomus Sarsi, Leonid Svetlichny, Kami̇l Mert Eryalçin, Melek İşi̇ni̇bi̇li̇r Okyar
Stage-Specific Growth Characteristics Of The Calanoid Copepod Invader Sinodiaptomus Sarsi, Leonid Svetlichny, Kami̇l Mert Eryalçin, Melek İşi̇ni̇bi̇li̇r Okyar
Turkish Journal of Zoology
The population dynamics of the Asian invasive copepod Sinodiaptomus sarsi were studied for four years after its introduction into an artificial pond in Kyiv (Ukraine) in 2020. The growth and development parameters of this species were measured under laboratory conditions. From its first appearance in spring 2020, the abundance of copepodite stages and adults increased from 3.5–5.2 individuals (ind.) m–3 to 1057.8 ind. m–3 in June 2024, suggesting the successful establishment of S. sarsi populations in this region. A characteristic feature of S. sarsi development in ponds is a male-biased sex ratio in the later copepodite stages. The sex ratio …
Morphometric And Reproductive Divergence Of Deep-Water Shrimps Plesionika Martia (A. Milne-Edwards, 1883) And P. Heterocarpus (A. Costa, 1871) Along A Depth Gradient In The Eastern Aegean Sea, Murat Özbek, Cengi̇z Koçak, Zafer Tosunoğlu
Morphometric And Reproductive Divergence Of Deep-Water Shrimps Plesionika Martia (A. Milne-Edwards, 1883) And P. Heterocarpus (A. Costa, 1871) Along A Depth Gradient In The Eastern Aegean Sea, Murat Özbek, Cengi̇z Koçak, Zafer Tosunoğlu
Turkish Journal of Zoology
This study provides a comparative analysis of two deep-water pandalid shrimp species, Plesionika martia and P. heterocarpus, based on monthly samples collected over one year in the Eastern Aegean Sea. Specimens were obtained from species-specific depth zones (550 m for P. martia and 350 m for P. heterocarpus) to examine morphometric traits, sexual dimorphism, and reproductive patterns. A total of 4419 individuals were analyzed. Females were significantly larger and more abundant than males (K–S test, p < 0.05), indicating pronounced sexual dimorphism. Length–weight relationships revealed negative allometric growth in both species, confirmed by t-tests (p < 0.05). Reproductive activity differed markedly: P. martia showed a short and distinct spawning period peaking in late autumn, whereas P. heterocarpus displayed a prolonged, bimodal cycle with peaks in spring and summer. The gonadosomatic index (GSI) and the proportion of ovigerous females varied significantly by season and species. A strong positive correlation between carapace length and gonad weight was found, with a more linear relationship in P. martia and greater variability in P. heterocarpus. Size at first maturity (L₅₀) was estimated at 22.3 mm CL for P. heterocarpus but could not be reliably determined for P. martia due to limited small size data, likely reflecting ontogenetic depth segregation. The consistent bathymetric separation between these species—also reported in the Western Mediterranean—suggests ecological niche differentiation. Species-specific management measures, including depth-based fishing restrictions and temporal closures during reproductive peaks, are recommended to support the sustainable exploitation of deep sea shrimp stocks in the region.