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The Effect Of The Metabolic Syndrome On The Histological Structure Of The Testes Tissue And The Sperm Morphology In The Rats, Ayşe Alkandurur, Şadi̇ye Kum

Turkish Journal of Veterinary & Animal Sciences

In this study, we aimed to investigate the effect of metabolic syndrome on spermatozoon morphology and histological, histochemical, histomorphometric changes in the testes. Twenty-four male Sprague Dawley rats (60 day-olds) were used for this purpose. The rats in the control group were fed only water and rat food, while the rats in the experimental group were fed with water containing 20% D-fructose and rats food for 16 weeks with ad libitum. At the end of the experimental period, the testes and epididymis of the rats were removed. The testes were embedded in paraffin by performing the necessary histological procedure. In …

Effects Of Wastewater Effluent On Fish Fin Morphology Of Larval Fathead Minnows (Pimephales Promelas) And Swimming Performance Of Smallmouth Buffalo (Ictiobus Bubalus), Seth Michael Bogue

Masters Theses

The Sangamon River flows across central Illinois and is mostly free flowing except in the city of Decatur where it is impounded to form Lake Decatur. The Sanitary District of Decatur (SDD) is located approximately three miles downstream of the Lake Decatur dam. For a significant portion of the year, the stretch of the Sangamon River downstream of SDD is dominated by effluent due to limited discharge from the Lake Decatur dam. This has resulted in heavy nutrient loading, most notably phosphorus, and elevated levels of nickel and other compounds in the downstream section of the river. Smallmouth buffalo ( …

Influence Of Preharvest Management Strategies In Beef Cattle On Growth Performance, Carcass Characteristics, And Meat Quality, Erin Gubbels

Electronic Theses and Dissertations

The overall goal of this thesis project was to better understand the influence of preharvest management strategies at critical growth and development periods on beef performance and meat quality. This was accomplished through two primary objectives: 1) to investigate the effects of maternal prepartum dietary energy source during mid- and late-gestation on growth performance, carcass composition, and meat quality of offspring and 2) to compare the influence of two low stress weaning methods with conventional weaning on post-weaning performance and carcass characteristics of steers. For objective 1, Angus-based cows from two sources (n = 129 from South Dakota State University, …

Characterization Of The Rumen Bacterial Communities Of Bison Heifers Fed A Grass-Based Diet Vs A Grain-Based Free-Choice Diet, Anlly Miley Fresno Rueda

Electronic Theses and Dissertations

A century ago, the North American grasslands and prairie ecosystems were dominated by bison. At least 30 million bison roamed the Great Plains when the first explorers arrived. By 1900, there were little over a thousand bison remained in the United States and Canada. Recovery efforts has been made since the 20th century to reestablish the herds and increase the bison population. Today, over 500,000 bison are distributed across North America, with more than 90% of the existing bison population under commercial production. Modern conservation strategies are made via the collaborative efforts of conservationist, producers, and researchers, resulting in increased …

Effects Of Predator Management And Parasitism On Over-Water Nesting Diving Duck Production In Southwestern Manitoba, Trenton E. Rohrer

Electronic Theses and Dissertations

Nest survival of upland nesting waterfowl (e.g., mallard [Anas platyrhynchos], blue-winged teal [Anas discors]) has been studied extensively in the Prairie Pothole Region (PPR) of North America. Conversely, over-water nesting diving ducks’ nest survival is poorly understood, likely because over-water nests are more challenging to find, may be less concentrated, and searching for these nests is physically demanding. Nest depredation is considered a leading cause of duck nest failure and is considered a limiting factor on upland nesting waterfowl production in the PPR. Similar factors limiting upland nesting duck production may limit over-water nesting duck productivity, but studies of this …

Investigating The Development Of Fecal Bacterial Communities In Growing Dairy Calves, Emily Fowler

Electronic Theses and Dissertations

The gut development of young calves is crucial for the producer and the calf's future. Many factors can affect the development of a young calf's gastrointestinal system, and there has been little research into the fecal microbiome development of calves from 0 to 12 weeks of age. To gain further insight into this process, development of the fecal microbiome in 12 dairy calves was investigated. Fecal bacterial composition was determined at four time points (weeks 0, 4, 8 and 12) using the 16S rRNA gene through PCR-amplification of the V1-V3 regions from fecal microbial genomic DNA, followed by Illumina MiSeq …

The Impact Of Chilling On Selected Attributes Of The Blowfly, Calliphora Vicina(Robineau-Desvoidy, 1830) (Diptera: Calliphoridae), Under Laboratory Conditions, Meltem Kökdener, Nevran Eylem Akman Gündüz, Ünal Zeybekoğlu

Turkish Journal of Zoology

The purpose of this study was to evaluate the effects of four different chilling periods, varying from 24 to 120 h, on the mean survival rate, larval and pupal development durations and the pupal and adult weight of Calliphora vicina (Robineau-Desvoidy) (Diptera: Calliphoridae) under laboratory conditions at 4 ºC in 2018 at Ondokuz Mayıs University. Chilling reduced the survival rate of the pupae of all developmental stages. The adult eclosion rate of first instar larvae and pupae was lower, especially after 72 and 120 h chilling periods, but it increased for the second instar, third instar and postfeeding larvae with …

First Report On Mild Insecticide Resistance In Newly Established Aegean Aedes Albopictus Populations Of Turkey, Sare İlknur Yavaşoğlu

Turkish Journal of Zoology

The invasive nature of Aedes albopictus, a competent vector of dengue, zika, yellow fever, and chikungunya viruses, has spread to many parts of the world. To date, there have been no report regarding the insecticide resistance status of Aedes albopictus populations along the Aegean coasts of Turkey. This study aims to confirm the occurrence of Aedes albopictus populations in the Aegean region of Turkey and test their susceptibility against different insecticide classes. Bioassay for susceptibility to Dikloro difenil trikloroetan (DDT) (4%), propoxur (0.1%), fenitrothion (1%), bendiocarb (0.1%), permethrin (0.75%), and deltamethrin (0.05%) of each population was assessed through the World …

A Standardised Analytical Framework For Sampling Fish Communities: Relevance Toturkish Riverine Ecosystems, Lorenzo Vilizzi, Ali̇ Serhan Tarkan, Baran Yoğurtçuoğlu

Turkish Journal of Zoology

Fish communities are important indicators of the health of riverine ecosystems. Fish monitoring for The Living Murray (TLM) initiative, one of Australia's most ambitious restoration undertakings for the degraded river-floodplain biota of the River Murray system (south-eastern Australia), was carried out annually from 2005 to 2011 across six 'Icon Sites', including the habitats and reaches therein. These spatial and temporal components of variation in fish community abundance and composition must be taken explicitly into account for consistent assessment of riverine ecosystem health. To address this requirement, a standardised analytical framework, consisting of a sampling design and appropriate statistical methods, is …

Morphology And Phylogeny Of A New Soil Ciliate, Colpodidium Zelihayildizi N. Sp. (Ciliophora, Nassophorea, Colpodidiidae), From Van, Turkey, İsmai̇l Yildiz

Turkish Journal of Zoology

new ciliate species Colpodidium zelihayildizae n. sp., which was discovered in a dry irrigation channel in Van (Turkey), was investigated morphologically using standard live and silver impregnation methods, and its SSU rRNA gene phylogeny was provided. This new species was characterized as follows: body size about 40-60 × 15-20 ?m in vivo, elongated ellipsoidal with flat or slightly concave ventral surface; the buccal cavity slightly below equatorial plane; macronucleus spherical or slightly elliptical, usually located in the last third of the cell; cortex distinctly furrowed in the anterior half; 19-22 somatic kineties, 4 postoral kineties; paroral membrane has 20 dikinetids; …

Genetic Variation In The Bovine Myogenic Determination Factor 1 (G.782g>Apolymorphism) And Its Influence On Carcass Traits In Turkish Grey Steppe Cattle, Sena Ardiçli, Özden Çobanoğlu

Turkish Journal of Veterinary & Animal Sciences

MyoD1 gene is a member of the myogenic differentiation gene family, which plays a crucial role in growth and development. There is a lack of information about the MyoD1variants and their phenotypic influences in Turkish Grey Steppe cattle. Therefore the present study aimed to determine the genetic variability of MyoD1 g.782G>A polymorphism and to evaluate its effects on carcass characteristics in Turkish Grey Steppe cattle. Analyses were conducted on a total of 142 Turkish Grey Steppe bulls. The PCR-RFLP technique was used for genotyping of the g.782G>A polymorphism in exon 1 of the MyoD1 gene. The population genetic …

Effect Of Neem (Azadirachta Indica) And Tulsi (Ocimum Sanctum) Leaves Powder Ongrowth Performance, Hemato-Biochemical Profile And Carcass Traits Of Japanese Quail (Coturnix Japonica), Luqman Arshad, Syed Zeeshan Haider Naqvi, Jibran Hussain, Hala Naeem, Saima Shahzad, Amna Aslam, Abd Ur Rehman, Abdul Ghayas

Turkish Journal of Veterinary & Animal Sciences

The current research investigated the growth performance, hematology, serum biochemistry of Japanese quails fed Neem (Azadirachta indica) and Tulsi (Ocimum sanctum) leaves powder with basic diet. A total number of 300 one-week old Japanese quail chicks were divided randomly into four dietary treatments with five replicates each (15 birds per replicate). Dietary treatments were: T0 or control or basal diet, T1 (Neem 0.5%), T2 (Tulsi 1%) and T3 (Neem 0.25% + Tulsi 0.5%) in basal diet. Growth performance parameters (feed intake, body weight, weight gain and feed conversion rate) were determined weekly. Hematology, serum biochemistry, carcass traits were evaluated on …

Impact Of Dietary Phytase On Tilapia Performance And Biofloc Water Quality, Bartholomew W. Green, Steven D. Rawles, Kevin K. Schrader, Matthew E. Mcentire, Jason Abernathy, Candis L. Ray, T. Gibson Gaylord, Miles D. Lange, Carl D. Webster

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

We tested the hypothesis that the fate of dietary phosphorus will not differ among a dicalcium phosphate-free practical diet treated with 6-phytase (3000 FTU/kg; Quantum Blue™; P-F + Phy), and positive (C) and negative (P-F) control practical diets when fed to hybrid tilapia (Oreochromis aureus x O. niloticus; 29.8 g initial weight) stocked at 29 fish/m³ and grown for 5 months to market size (454 g/fish) in outdoor biofloc production system tanks (16.6 m³). The ideal protein diets were formulated to contain 27.7% digestible protein and 4% lipid from practical ingredients and were extruded …

Arabinoxylan Structural Profiling Of Cool-Season Pasture Grasses Via High-Performance Anion-Exchange Chromatography With Pulsed Amperometric Detection (Hpaec-Pad) Analysis Of Endoxylanase Digests, Glenna Erin Joyce

Theses and Dissertations--Animal and Food Sciences

Arabinoxylan (AX) is a major structural polysaccharide found in the cell walls of monocots such as cereal grains and pasture grasses. The variety of AX structural components and substitution patterns contribute to AX structural diversity between different monocot species as well as plant tissues.

The rumen is the first digestion site of masticated food material in cattle and provides 70% of energy to host through fermentation of forage. There are many species of pasture grasses that act as a forage source. Differences in AX structure found in these pasture grasses may impact rumen microbial fermentation. Understanding the AX structure of …

Impact Of Mineral Supplementation On Intake Behavior And Blood Flow In Growing Beef Cattle Exposed To Fescue-Derived Alkaloids, Hannah Marie Herzing

Theses and Dissertations--Animal and Food Sciences

Consumption of endophyte-infected tall fescue by cattle has repeatedly been shown to negatively impact dry matter intake (DMI), growth rate, and circulating prolactin concentrations. The objective of the current study was to determine if a mineral supplementation would mitigate the negative effects of fescue-derived alkaloid consumption on feed intake, circulating prolactin, and the vascular system. Twelve Angus crossbred steers were used in a triplicated Latin square design consisting of three 28 d experimental periods. Treatments consisted of three top-dressed mineral supplements (142 g/head/d): a non-medicated control (CON), commercially available Fescue EMT® Mineral Defense (EMT), and a test prototype (EMT 2). …

Monocyte Abundance And White Blood Cell Expression Of Prolactin And Nf-Kb Pathway Genes In Beef Steers Are Altered By Grazing Toxic Endophyte-Infected Tall Fescue And Lipopolysaccharide Challenge, Cecilia Winfrey

Theses and Dissertations--Animal and Food Sciences

Experiment 1 tested the hypothesis that ad libitum consumption of a 1:1 blend (MIX) of sodium selenite (ISe) and SELPLEX vs solely ISe as selenium (Se) supplements (27 ppm) in a vitamin-mineral mix (V-M) by steers subjected to summer-long grazing of toxic endophyte-infected tall fescue (TE) would ameliorate the negative effects of TE by positively affecting the expression pattern of prolactin (PRL) and NF-kB pathway genes by circulating leukocytes (WBC). Experiment 2 tested the hypothesis that the MIX form of supplemental Se also would ameliorate the negative effects of in vitro blood lipopolysaccharide challenge (LPS) on WBC gene expression. The …

Impact Of Feeding Foods Containing Industrial Hemp-Derived Cannabidiol On Canine Health And Well-Being, Elizabeth M. Morris

Theses and Dissertations--Animal and Food Sciences

Anecdotal evidence of beneficial behavioral and health effects of cannabidiol (CBD) use in companion animals has amplified the need to elucidate safety and potential impacts of CBD use. The purpose of this investigation was to determine the impact of industrial hemp-derived CBD administration on canine health and well-being. We hypothesized that CBD would produce beneficial effects on canine behavior without negatively impacting animal health. Dog treats were formulated to include CBD and shown to be palatable across a range of CBD inclusion levels. Dogs were supplemented with CBD treats and subjected to a noise-induced fear response test to assess potential …

Effects Of Season And Nutrition On Insulinemic Responses In Insulin Dysregulated Horses, Erica Lyn Macon

Theses and Dissertations--Veterinary Science

Insulin dysregulation (ID) is the main risk factor for the development of hyperinsulinemia-associated laminitis (HAL). ID in the equid has been extensively researched; however, recommendations for diagnosing and managing ID horses have originated from work completed in other models, such as the ID pony and healthy horse. Therefore, our overall objective was to improve current diagnostic tools and nutritional management strategies by investigating the effect of season, the fed and fasted state on the oral sugar test (OST) and dietary nutrient content on insulinemic responses in the ID horse. To address this, four main objectives with three specific aims were …

Red Drum And Spotted Seatrout Live-Release Tournament Mortality And Dispersal, T. Reid Nelson, Crystal Hightower, Sean P. Powers

University Faculty and Staff Publications

Although catch-and-release fishing tournaments undoubtedly reduce mortality of target species, postrelease mortality and fish stockpiling at release sites remain common concerns related to these tournaments. The impacts of liverelease tournaments on freshwater species have been widely studied. However, research on estuarine sport fishes is lacking even though catch-and-release tournaments targeting these species are prevalent and popular recreational fisheries exist. Therefore, we estimated the post-weigh-in mortality and dispersal of Red Drum Sciaenops ocellatus and Spotted Seatrout Cynoscion nebulosus released from the 2016–2018 Alabama Deep Sea Fishing Rodeo live-weigh-in categories using acoustic telemetry. To concurrently estimate overall post-weigh-in mortality and dispersal, we …

Documentation Of Atlantic Tarpon (Megalops Atlanticus) Space Use And Move Persistence In The Northern Gulf Of Mexico Facilitated By Angler Advocates, J. Marcus Drymon, Matthew B. Jargowsky, Michael A. Dance, Mitchell Lovell, Crystal L. Hightower, Amanda E. Jefferson, Andrea M. Kroetz, Sean P. Powers

University Faculty and Staff Publications

Atlantic tarpon (Megalops atlanticus, hereafter tarpon) are facing a multitude of stressors and are considered Vulnerable by the IUCN; however, significant gaps remain in our understanding of tarpon space use and movement. From 2018 to 2019, citizen scientists facilitated tagging of 23 tarpon with SPOT tags to examine space use and movement across the northern Gulf of Mexico. Movement-based kernel densities were used to estimate simplified biased random bridge-based utilization distributions and a joint move persistence model was used to estimate a behavioral index for each fish. Tarpon showed consistent east–west movement from the Alabama/Florida border to Louisiana, and utilization …

A Comprehensive Review On Genetic Diversity And Phylogenetic Relationships Amongnative Turkish Cattle Breeds Based On Microsatellite Markers, Eymen Demi̇r, Taki̇ Karsli, Murat Soner Balcioğlu

Turkish Journal of Veterinary & Animal Sciences

Many local breeds belonging to different livestock species such as cattle are in danger of extinction, since farmers prefer high-yielding breeds as well as intensive selection pressure. This fact leads to conduct suitable breeding and conservation programs in worldwide. Revealing genetic diversity is the first step for applying breeding and conservation programs. In this respect, this is the first comprehensive study aimed to review current genetic diversity and phylogenetic relationships among native Turkish cattle breeds based on previous microsatellite marker studies. Compared to other local cattle breeds reared in different regions of the world, native Turkish cattle breeds hold a …

Pelvic Limb Thermography In Dogs Submitted To Different Thermotherapy Modalities, Samyla Paiva De Albuquerque, Orimacelio Da Costa Martins, Ariel De Aguiar, Lorena Oliveira Silva, Acácio Duarte Pacheco, Lourdes Marina Bezerra Pessoa, Luís Eduardo Maggi, Soraia Figueiredo De Souza

Turkish Journal of Veterinary & Animal Sciences

Veterinary physiatry is an area in need of further studies and a discipline in which the protocols used in the veterinary clinical routine are often extrapolated from studies in medicine. This study aimed to evaluate the effectiveness of different types of thermotherapy and massage, through thermography, in promoting heating or cooling in the pelvic limb of healthy dogs. Five healthy adult dogs (male and female) of different breeds were subjected to 5 treatments: G1: massage without oil; G2: oil massage; G3: heating with a thermal bag at 43 ± 1 °C; G4: cryotherapy with ice pack; and G5: therapeutic ultrasound. …

Effect Of Eggshell Temperatures On Hatching Performance, Egg Production, And Bonemorphology Of Laying Hens, Serdar Kamanli, Zi̇şan Servet Yalçin, Ahmet Nuri̇ Taşdemi̇r, Bülent Tarim, Engi̇n Tülek, Hüseyi̇n Aygören, Öğünç Meral, Bi̇rkan Karsli, Tansel Ansal Balci, Mehmet Bozkurt

Turkish Journal of Veterinary & Animal Sciences

The present study aims to evaluate the effect of lower or higher eggshell temperatures from days 7 to 21 on hatching performance, bone and blood parameters, and egg production along with the age of laying chickens. A total of 3150 eggs obtained from a white egg-type breeder were divided randomly into 3 groups of 1050 eggs. From 7 to 21 days, eggs were incubated at one of three eggshell temperatures: Control (IC) 37.5 °C, low (IL) 36.9 °C, and high (IH) 38.5 °C. At hatch, chicks were weighed, and blood was collected to measure total Ca, inorganic P, and ALP …

The Curative Effects Of Dietary Yeast Beta-1,3/1,6-Glucan On Oxidative Stress And Apoptosis In Laying Quails (Coturnix Coturnix Japonica) Exposed To Lead, İsmai̇l Seven, Pinar Tatli Seven, Seda İflazoğlu Mutlu, Gözde Arkali, Nurgül Bi̇rben, Aslihan Sur Arslan, Mesut Aksakal

Turkish Journal of Veterinary & Animal Sciences

The objective of this study was to investigate the effects of supplementation of beta-glucan to the basal diet of laying quails exposed to lead (Pb) toxicity. A total of 112 birds were randomly divided into 4 groups. The first group was fed a corn-soybean based basal diet without any supplementation (control). The second (Pb) and third (beta-glucan) groups were supplemented with 100 mg/kg of Pb (as Pb acetate) and 100 mg/kg of beta-glucan, respectively. The fourth group (Pb + beta-glucan) was fed a basal diet supplemented with 100 mg/kg of Pb and 100 mg/kg of beta-glucan. It was determined that …

Oviductal Cells Adhesion Test For Bull Semen Quality Assessment And Fertility Prediction Ofendangered Breeds: Proposal Of A Simplified Method, Calogero Stelletta, Koray Teki̇n, Beste Çi̇l, Juri Vencato, Giulia Gollin, Giancarlo Bertoli, Lucillo Cestaro, Stefano Romagnoli, Ali̇ Daşkin

Turkish Journal of Veterinary & Animal Sciences

Classical procedures for semen evaluation in breeding soundness examination require time and are costly. The evaluation techniques with CASA are limited due to the lack of standardization among laboratories and data analysis methods. Recent studies have contradictory conclusions on the actual predictive ability of this method alone regarding fertility. Finding a simple and objective test that can give the maximum correlation between in vitro and in vivo results has been the main focus of novel research. In this study, we aimed to develop a repeatable protocol of sperm adhesion test using oviductal explant (AOC) and the results were compared with …

The Prevalence Of Seven Crucial Honeybee Viruses Using Multiplex Rt-Pcr And Theirphylogenetic Analysis, Abdurrahman Anil Çağirgan, Zafer Yazici

Turkish Journal of Veterinary & Animal Sciences

Honey bee viruses may be of severe adverse effect on bee colonies. Till now, more than twenty honey bee viruses have been identified. The aim of this study was to investigate the prevalence of seven honey bee viruses, namely Israeli acute paralysis virus (IAPV), deformed wing virus (DWV), sacbrood virus (SBV), acute bee paralysis virus (ABPV), black queen cell virus (BQCV), Kashmir bee virus (KBV), and chronic bee paralysis virus (CBPV) using a multiplex reverse transcription polymerase chain reaction (mRT-PCR). A total of 111 apiaries were randomly selected and adult bees and larvae samples were obtained from seemingly healthy colonies …

The Effect Of Ellagic Acid On Performance, Digestibility, Egg Quality, Cecal Bacterial Flora,Antioxidant Activity, And Some Blood Parameters In Laying Quails Reared At Differenttemperatures, Seda İflazoğlu Mutlu, Talat Güler

Turkish Journal of Veterinary & Animal Sciences

In this study, the effect of ellagic acid on the performance, egg quality, digestibility, cecal microflora, serum malondialdehyde (MDA) level, and biochemical parameters in quails reared under normal conditions and at high environmental temperatures was investigated. The animals (n = 240; 5-weeks old) reared at 2 environmental temperatures [thermoneutral (TN) and heat stress (HS)] and in 4 diet groups containing different ellagic acid doses (0, 100, 200, and 400 mg/kg) were randomly assigned to 8 groups according to the 2 × 4 factorial design. Feed intake, egg weight, and egg production were higher (P < 0.001) and feed conversion (P < 0.01) was better in the TN groups compared to the HS groups. Egg (P < 0.01) and shell weights (P < 0.001) were higher in the TN groups compared to the HS groups. The effect of ellagic acid supplementation on shell weight was statistically significant in the TN and HS groups (P < 0.05). The effects of environmental temperature and the supplementation of ellagic acid on digestibility of dry matter (P < 0.05), ether extract (P < 0.01), and crude protein (P < 0.01) were statistically significant in the TN and HS groups. Supplementation of ellagic acid reduced the total coliform bacteria count (P < 0.01) and increased the total lactic acid bacteria count (P < 0.001) in the cecum. Serum MDA levels increased with heat stress (P < 0.001) and decreased with the supplementation of ellagic acid (P < 0.001). The effect of environmental temperature on serum glucose (P < 0.001), cholesterol (P < 0.05), total protein (P < 0.05), alanine aminotransferase (ALT) (P < 0.001), sodium (P < 0.05), and magnesium was significant. In conclusion, the supplementation of ellagic acid decreased oxidative stress and total coliform bacteria count and improved the feed conversion and egg quality in quails under heat stress. Moreover, ellagic acid increased the digestibility of nutrients and had a positive effect on lactic acid bacteria. It was observed in this study that these beneficial effects of ellagic acid increased with an increasing dose, and 400 mg/kg was the most effective dose.

Mortality In Some Domesticated Pigeons (Columba Livia) From Jammu, India, Syed Mehmood, Nawab Nashiruddullah, Jafrin Ara Ahmed

Turkish Journal of Veterinary & Animal Sciences

Although pigeons are reared for recreational purposes in Jammu region, disease occurrence is sparsely documented. Based on clinical signs, lesions and laboratory investigation, approximately 600 out of 4000 (15%) domestic pigeons were found to be disease affected. Necropsy of 60 birds was conducted to determine the cause of death. Haemoproteus columbae demonstrated within erythrocytes and various development stages in tissue and endothelial schizogony caused majority deaths due to pneumonia and hepatitis (45%) accompanied by severe vascular and tissue reaction. Newcastle disease (20%) confirmed by positive serum haemagglutination inhibition manifested in a severe neurological form with characteristic cerebral malacia and demyelination. …

Effect Of Light Sources On Productivity, Welfare Aspects, And Economic Evaluation Ofcommercial Layers, Fazal Raziq, Jibran Hussain, Athar Mahmud, Khalid Javed

Turkish Journal of Veterinary & Animal Sciences

The present study was aimed to evaluate the influence of incandescent, fluorescent, and light emitting diode (LED) lights on the productive efficiency and economic aspects of laying hens. For this, 216 laying hens were distributed into three groups of light sources with six replicates each. Each replicate consisted of 12 birds. The data were analyzed in SAS 9.1 (SAS InstituteInc., Cary, NC, USA) by applying one-way ANOVA technique, and significant means were compared through least significant difference test. In the present study, LED light significantly improved the body weight, body weight gain, percentage of egg production, FCR per dozen and …

Investigation Of G1 (C.260g>A) Polymorphism In Exon 1 Of Gdf9 Gene In Turkish Sheepbreed Karayaka, Koray Kirikçi, Mehmet Aki̇f Çam, Levent Mercan

Turkish Journal of Veterinary & Animal Sciences

GDF9 is an essential gene for normal follicular development and prolificacy in sheep. The aim of this study was to determine the genetic polymorphism and G1 mutation of GDF9 gene exon 1 in 100 Karayaka ewes, belonging to four subpopulations in the Black Sea Region provinces of Turkey. Based on DNA sequence results, two alleles (A and G) and two genotypes (GG and GA) were determined with the restriction fragment length polymorphism analysis of PCR-amplified fragments (PCR-RFLP) method. The frequencies of mutant (A) and wild-type (G) alleles were detected as 0.10 and 0.90. The frequencies of GG and GA genotypes …