Animal Sciences Commons^™

The Influence Of Oblique Angle Forced Exercise In Surgically Destabilized Stifle Joints Is Synergistic With Bone, But Antagonistic With Cartilage In An Ovine Model Of Osteoarthritis, Rachel J. Hill, Holly M. Mason, Gavin Yeip, Samer S. Merchant, Aaron L. Olsen, Rusty D. Stott, Arnaud J. Van Wettere, Eadric Bressel, Jeffrey B. Mason

Animal, Dairy, and Veterinary Science Faculty Publications

Large animal models of osteoarthritis are a necessary testing ground for FDA approval of human medicine applications. Sheep models have advantages over other available large animals, but development and progression of osteoarthritis in sheep is exceedingly slow, which handicaps progress in development of potential treatments. We combined oblique angle forced exercise to increase stress on the stifle, with surgical destabilization to hasten the development of osteoarthritis in ewes. Methods for early detection of clinical signs included radiography, urine, and serum biomarker assays and gait analysis and ex vivo we used microcomputed tomography and macroscopic joint analysis. Our model was able …

The Effects Of Camelina Sativa Meal On Haemonchus Contortus In Breeding Age Ewes, Nicole Julia Nichols

Student Theses and Dissertations

Gastrointestinal parasites (GIP) are one of the greatest threats to sheep production in the United States. Increased resistance to traditional anthelmintics has created the need for alternative methods to control GIP. The objective of this study was to determine if Camelina sativa (CS) meal could be fed as part of a daily ration to reduce infection rates of the GIP Haemonchus contortus during two 28-day trials. Forty-eight ewes were sorted and fed a 14% crude protein (CP) supplement with or without 10% CS as part of their daily ration. All ewes grazed a mixture of Bermuda (Cynodon dactylon) and tall …

Co-Existence Of Bovine Viral Diarrhea And Border Disease Viruses In A Sheep Flock Suffering From Abortus And Diarrhea, Peli̇n Tuncer Göktuna, Gi̇zem Alpay, Eda Baldan Öner, Kadi̇r Yeşi̇lbağ

Turkish Journal of Veterinary & Animal Sciences

Pestivirus infections have a huge economic impact on livestock production. In 2014, an aborted fetus from a sheep flock suffering from abortus and diarrhea was submitted for virological diagnosis. Due to the positive result of the sample for pestivirus and continuing clinical symptoms in the flock, all of the animals were sampled individually. Blood samples for serum and peripheral blood mononuclear cells were collected from 93 animals (5 rams, 26 lambs, and 62 sheep). During sampling 1 ocular and 4 rectal swab samples were obtained from lambs that had a clinical eye problem and diarrhea, respectively. Additionally 5 aborted fetuses …

Comparative Evaluations Of Tear Secretion In Healthy And Infectious Keratoconjunctivitis Romanov Sheep With Schirmer Tear Test And Phenol Red Thread Tear Test, Mustafa Bariş Akgül, Ni̇hat Şindak, Ali̇ Gülaydin, Doğukan Özen, Serpi̇l Kahya Demi̇rbi̇lek, Kadi̇r Sulu

Turkish Journal of Veterinary & Animal Sciences

The aim of this study is to determine the amount of tear secretion in sheep with infectious keratoconjunctivitis and healthy ones in the Siirt region by Schirmer tear test and phenol red thread tear test. A total of 47 Romanov sheep, consisting of sheep with infectious keratoconjunctivitis (n = 6) and healthy sheep (n = 41), constituted the study material. Phenol red thread tear test followed by Schirmer tear test was performed on both eyes of the animals, properly taken at a control visit on their feet. The Schirmer tear test and phenol red thread tear test values were measured …

Molecular Identification Of Tick-Borne Pathogens In Tickhaemaphysalis Longicornis From Sheep In Henan, China, Yongshuai Peng, Meng Qi, Fuchun Jian, Jinhong Wang, Yali Lv, Jiujian Wei, Rongjun Wang, Longxian Zhang, Changshen Ning

Turkish Journal of Veterinary & Animal Sciences

Tick-borne diseases are one of the most important classes of disease in animal husbandry and cause severe economic losses. In this study, 660 adult female ticks were collected from sheep in nine localities in Henan Province, China. All were identified as Haemaphysalis longicornis, confirmed with light microscopy and PCR amplification. The pathogens identified in these ticks included bacteria of the genus Anaplasma (Anaplasma ovis, A. bovis, A. phagocytophilum) and piroplasmal protozoans (Theileria luwenshuni, Babesia motasi). Our results show the high prevalence of A. bovis (20.4%, 135/660) and T. luwenshuni (14.4%, 95/660) in the ticks from sheep, whereas A. ovis, A. …

The Effect Of Combining Vitamin E And C On The Viability Improvement Of Transfected Ovine Spermatogonial Stem Cells After Cryopreservation And Thawing, Hosein Shabani, Mohammad Zandi, Hamideh Ofogi, Mohammad Reza Sanjabi, Khosro Hoseini Pajooh

Turkish Journal of Veterinary & Animal Sciences

The present study aimed to identify whether vitamin E and C and their combination in basal freezing medium improved the viability of postthaw transfected spermatogonial stem cells (SSCs). For this purpose, SSCs were harvested by enzymatic digestion twice. After enrichment and culture on Sertoli cell feeder layer, SSCs were characterized by using alkaline phosphatase staining and expression of oct-4 and c-kit genes as specific stem cell markers. As to the transfection of SSCs, different concentrations of DNA (0.2, 0.4, and 0.8 μg) and turbofect (0.4 and 0.8 μL) in 100 μL of medium were studied. The results showed that cryopreservation …

A Pilot Study Of Sheep Disease Surveillance In Western Australia, Roy Butler

Conference papers and presentations

A pilot study of sheep disease surveillance was conducted in 2014-2015 on four farms in the eastern wheatbelt of Western Australia. The participants observed their sheep, sufficiently closely to notice disease, at least every second day. Most of the disease syndrome reports related to fewer than five sheep, demonstrating that farmers noticed problems in individual sheep, and not only in groups of sheep. Of a total of 66 disease syndrome observations reported over 12 months, the three most frequently occurring syndromes were found dead + sudden death (combined), skin lesions, and lameness.

Sheep Updates 2016, Mick Keogh, David Cornish, Michael Chilvers, Gerry Hinkley, Danielle England, Rosemary Bartle, Brad Wooldridge, Norm Santich, John Young, Ashley Herbert, Jamie Heinrich, Graeme Howie, Bruce Mullan

Sheep Updates

This session covers eleven papers from different authors:

1. Forward, Dr Bruce Mullan, Director Sheep Industry Development, Department of Agriculture and Food Western Australia

2. The Australian sheep industry in 2025, Mick Keogh, Australian Farm Institute

3. Decision making in a risky environment, David Cornish, Cornish Consulting

4. Business Transitioning, Michael Chilvers, Nile Tasmania

5. Advisory Boards in WA Agriculture - making life 'easier' for everyone, Gerry Hinkley, Producer, Tincurrin and Danielle England, Aginnovate

6. Principles of Successful Family Business Succession Strategies, Rosemary Bartle, Succession Planning Facilitator, Rabobank

7. Diversifying the Feedbase...is the …

Western Australian Wild Dog Action Plan 2016 - 2021, Wa Wild Dog Action Group, Department Of Agriculture And Food, Western Australia

Biosecurity published reports

The Wild Dog Action Plan 2016 – 2021 is an industry led and driven plan that considers the economic, environmental and social impacts of wild dogs and identifies the key issues for managing them across Western Australia. The plan is designed to protect the livestock and tourism industries and public safety, and recognises the ecological and cultural values of the dingo.

Comparison Of Pcr Tests For The Detection Of Mycoplasma Agalactiae In Sheep And Goats, Hüban Göçmen, Ruben Sebastian Rosales, Roger David Ayling, Mi̇hri̇ban Ülgen

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to compare PCR tests for the detection of Mycoplasma agalactiae in sheep and goats. Samples obtained from sheep and goats in Turkey were tested to determine the presence of M. agalactiae. Mycoplasma culture and two direct PCR methods based on the uvrC gene and polC gene were compared with PCR of the 16S rRNA gene followed by denaturing gradient gel electrophoresis (PCR/DGGE) on DNA extracted from clinical samples (following culture enrichment). A total of 234 samples were examined: 9.4% and 13.2% were positive for M. agalactiae based on the uvrC gene and polC gene …

Ovine Coccidiosis: Prevalence And Associated Risk Factors Inand Around Addis-Zemen, Northwest Ethiopia, Abinet Lakew, Zewdu Seyoum

Turkish Journal of Veterinary & Animal Sciences

This cross-sectional study was conducted in and around Addis-Zemen from November 2014 to April 2015 to determine the prevalence of ovine coccidiosis and to identify associated risk factors. Faecal samples were collected directly from the rectum of 384 randomly selected animals. A centrifugal faecal flotation technique using saturated salt solution was used to detect Eimeria oocysts. Out of 384 samples, only 88 were found to contain Eimeria oocysts. Eimeria infection was recorded in all age and sex groups of the study animals. A strong significant association was observed (P < 0.05) between Eimeria infection and the faecal consistency, production system, hygienic status, age, and body condition of the sampled animals. However, an insignificant (P > 0.05) association was recorded between Eimeria infection and the origins and …

Integrated Methods For Controlling Gastrointestinal Nematode Infections In Ewes And Lambs, Sarah Tammy Nicole Keeton

LSU Doctoral Dissertations

Gastrointestinal nematode (GIN) parasites cause extensive damage to small ruminants, and Haemonchus contortus is a major concern to production worldwide. With the development of GIN resistance to anthelmintics, alternative strategies for control are needed. The major component of this study compared two strategies for effect on animal health and changes in GIN population. One flock of ewes and lambs (Strategy 1, S1) employed targeted selective treatment (TST) with an anthelmintic based on FAMACHA score, and one flock (Strategy 2, S2) employed sericea lespedeza (SL) supplement feeding and TST with copper oxide wire particles (COWP) based on FAMACHA score. S1 ewes/lambs …

Evaluation Of Tear And Serum Trace Elements (Copper, Selenium, And Cobalt) In Sheep, Duygu Tarhan, Si̇nem Ülgen, Fatma Ateş Alkan, Di̇lek Olgun Erdi̇kmen, Çağla Parkan Yaramiş, Mehmet Erman Or, Ümi̇t Bora Barutçu

Turkish Journal of Veterinary & Animal Sciences

Metabolic diseases such as enzootic ataxia, white muscle disease, and white liver disease are among the most important problems of livestock for sheep. The aim of this study was to analyze whether tears can be used as an alternative diagnostic method in determination of diseases that result from lack or excess of copper, selenium, and cobalt. Samples of serum and tears taken from 45 healthy sheep of the Kivircik breed aged between 2 and 4 years were analyzed. The concentrations of copper, selenium, and cobalt were measured in serum and tears as 118.0 ± 36.0, 58.0 ± 15.0, and 0.5 …

Presence Of Carbohydrate-Digesting Enzymes Throughout The Digestive Tract Of Sheep, Renata Miltko, Grzegorz Belzecki, Barbara Kowalik, Jacek Skomial

Turkish Journal of Veterinary & Animal Sciences

The activity of enzymes that digest carbohydrates at various points in the gastrointestinal tract of sheep was examined. In addition, weight and contents of digestive tract segments were examined. The experiment was performed on six adult ewes fed an 85% hay diet. The morphometric measurements revealed that the alimentary tract constituted 32% of the sheep's body mass and wet rumen contents constituted 70% of wet mass of the total digestive tract content. The protozoal population in the rumen varied from 37.2 × 104 to 54.0 × 104/mL rumen fluid. In the examined samples, ciliates were identified as belonging to the …

Polymorphism Of Exon 2 Of Dio2 Gene And Its Association Withseasonal Reproduction In Sheep, Jianning He, Dongwei Huang, Ran Di, Jinxin Wang, Mingxing Chu, Qiuyue Liu, Wenping Hu, Xiangyu Wang, Zhangyuan Pan

Turkish Journal of Veterinary & Animal Sciences

DIO2 was studied as a candidate gene for reproduction in sheep. Three pairs of primers were designed to detect single nucleotide polymorphisms (SNPs) of exon 2 of DIO2 in nonseasonal and seasonal reproduction breeds. The polymorphisms were detected using SeqMan II and analyzed by PCR-RFLP. The sheep DIO2 gene was cloned and its mutations were detected in five sheep breeds whose reproductive seasonality and litter sizes were different. Association analyses were performed to reveal the relationships between SNPs and reproductive seasonality as well as litter size in sheep. The results showed that a 1041-bp DNA fragment of the sheep DIO2 …

Cast/Mspi Gene Polymorphism And Its Impact On Growth Traits Of Soviet Merinoand Salsk Sheep Breeds In The South European Part Of Russia, Ivan Fedorovich Gorlov, Nadezhda Vasilevna Shirokova, Alexander Vasilevich Randelin, Valeriya Nikolaevna Voronkova, Natalya Ivanovna Mosolova, Elena Yurevna Zlobina, Yury Anatolevich Kolosov, Nekruz Farkhodovich Bakoev, Mariya Anatolevna Leonova, Sirozhdin Yusufovich Bakoev, Anatoly Yurevich Kolosov, Lubov Vladimirovna Getmantseva

Turkish Journal of Veterinary & Animal Sciences

The purpose of this work was to study MspI polymorphism in the CAST gene in Soviet Merino and Salsk sheep breeds in the South European part of Russia and to find its relation with growth traits. Soviet Merino sheep have been found to have the M and N alleles with a frequency of 0.88 and 0.12 and the MM, MN, and NN genotypes with a frequency of 0.82, 0.12, and 0.06, respectively. Salsk sheep have been established to have the M and N alleles with a frequency of 0.89 and 0.11 and two genotypes, MM and MN, with a frequency …

Comparison Of The Efficiency Of Concentrated Soluble Recombinant Phospholipase D And Natural Phospholipase D Enzymes, Asli Sakmanoğlu, Osman Ergani̇ş

Turkish Journal of Veterinary & Animal Sciences

Phospholipase D (PLD) is a major virulence determinant of Corynebacterium pseudotuberculosis. Various studies have focused on the expression of recombinant PLD (rPLD) enzyme in different Escherichia coli strains, but generally a high yield of insoluble protein was reported. The aims of this study were to express soluble rPLD by different methods in E. coli. The rPLD and natural PLD (dPLD) enzymes were concentrated using an ultramembrane cassette system after the efficiencies of these concentrated enzymes were compared. The rPLD enzyme was expressed in One Shot®BL21(DE3) E. coli when induced by IPTG in TY medium. Soluble dPLD and rPLD enzyme hemolytic …

Seroprevalence Of Caseous Lymphadenitis In Kangal Akkaraman Sheep, Öznur Aslan, Kadi̇r Semi̇h Gümüşsoy, İlknur Karaca Bekdi̇k, Aytaç Akçay, Ömer Orkun Demi̇ral

Turkish Journal of Veterinary & Animal Sciences

In this study, the seroprevalence of Corynebacterium pseudotuberculosis, the causative agent of caseous lymphadenitis (CLA) infection, in Kangal Akkaraman sheep flocks was examined. For this purpose, blood samples were collected from 25 different sheep flocks (n = 379). According to the ELISA results, the numbers of CLA-positive and CLA-negative samples were 138 (36.4%) and 241 (63.6%), respectively. CLA positivity was observed in 35.7% of the females (n = 241), 37.7% of the males (n = 138), 40.2% of the sheep with clinical symptoms (n = 184), and 32.8% of the sheep with no clinical symptoms (n = 195) (P > 0.05). …

The Effect Of Alternative Fertilization And Application Time On Voluntary Intake Of Forages, Jessica Clark

Graduate Theses and Dissertations

Dairy slurry and poultry litter have increased in popularity as fertilizers in the agriculture industry. However, residual effects of these manures on voluntary intake of forages from subsequent harvests are not well known. The objectives of this two part study were to determine if moisture level of alfalfa silage and the use of dairy slurry as a fertilizer have an effect on intake and digestibility by sheep, and if forage species and the use of poultry litter as a fertilizer have an effect on intake by horses. Eighteen ewes (47.6 ± 5.34 kg) were used in experiment 1 and were …

Investigations Into The Cross-Infectivity Of Nematode Parasites Of Cattle And Sheep, Eva Marie Wray

Graduate Theses and Dissertations

The existence of anthelmintic resistance is not singular in parasite species, host species or geographic region. It has become a problem of worldly stature, especially when considering sheep nematodes. Recommendations have been modified from chemical-based control to multipart, managerial intervention. Compared with nematodes of cattle, the worldwide resistance of sheep nematodes to anthelmintic remedies is much more pronounced and urgent. As the resistance to essentially all anthelmintic classes approaches a cautionary level, the implementation of non-chemical controls has grown increasingly essential. Six-6 to 8 month old Holstein steer calves, six-5 month old Katahdin ram lambs and eight-5 month old Suffolk …

Western Australian Sheep Producer Survey 2014, Anne Jones, Mandy Curnow

Animal production and livestock published reports

This report documents the results of the 2014 Western Australian producer survey that was part of a larger national survey conducted for the Sheep Cooperative Research Centre (CRC). It is essentially a repeat of a survey conducted in 2011 (Western Australian Farmer Survey 2011, Department of Agriculture and Food, Western Australia). Where it is useful, data from these other surveys has been included for comparison.

Sheep Updates 2015 - Moora, Bruce Mullen, Kate Pritchett, Kimbal Curtis, Daniel Real, Jaq Pearson, Lynne Bradshaw, Geoff Lindon, Katherine Davies, Kevin Hepworth, Stephen Lee, Dawson Bradford, Lucy Anderton, Jackie Jarvis, Ben Patrick

Sheep Updates

This session covers thirteen papers from different authors:

1. The Sheep Industry Business Innovation project, Bruce Mullan, Sheep Industry Development Director, Department of Agriculture and Food, Western Australia

2. Western Australian sheep stocktake, Kate Pritchett and Kimbal Curtis, Research Officers, Department of Agriculture and Food, Western Australia

3. Tedera - a perenial forage legume to reduce your supplementary feeding in summer and autumn, Dr. Daniel Real, Senior Plant Breeder, Department of Agriculture and Food, Western Australia

4. National Livestock Identification System (NLIS) for sheep and goats - what is the NLIS database? Jac Pearson, Biosecurity Officer, Department of Agriculture and …

Sheep Updates 2015 - Katanning, Bruce Mullan, Kate Pritchett, Kimbal Curtis, Chris Wilcox, Mike Hyder, Leigh Sonnerman, Lynne Bradshaw, Geoff Lindon, Katherine Davies, Joe Young, Stephen Lee, Ian Robertson, Lucy Anderton, Hayley Norman, Ed Barrett-Lennard, Jackie Jarvis, Ben Patrick

Sheep Updates

This session covers fourteen papers from different authors:

1. The Sheep Industry Business Innovation project, Bruce Mullan, Sheep Industry Development Director, Department of Agriculture and Food, Western Australia

2. Western Australian sheep stocktake, Kate Pritchett and Kimbal Curtis, Research Officers, Department of Agriculture and Food, Western Australia

3. Wool demand and supply - short term volatility, long term opportunities, Chris Wilcox, Principal of Poimena Analysis

4. Lifetime management for maternal ewes, Mike Hyder, Research Officer, Department of Agriculture and Food, Western Australia

5. National Livestock Identification System (NLIS) for sheep and goats - what is the NLIS database? Leigh Sonnermann, …

Sheep Updates 2015 - Ravensthorpe, Bruce Mullan, Kate Pritchett, Kimbal Curtis, Chris Wilcox, Mike Hyder, Leigh Sonnerman, Lynne Bradshaw, Geoff Lindon, Katherine Davies, Joe Young, Stephen Lee, Ian Robertson, Lucy Anderton, Hayley Norman, Ed Barrett-Lenard, Jackie Jarvis, Ben Patrick

Sheep Updates

This session covers fourteen papers from different authors:

1. The Sheep Industry Business Innovation project, Bruce Mullan, Sheep Industry Development Director, Department of Agriculture and Food, Western Australia

2. Western Australian sheep stocktake, Kate Pritchett and Kimbal Curtis, Research Officers, Department of Agriculture and Food, Western Australia

3. Wool demand and supply - short term volatility, long term opportunities, Chris Wilcox, Principal of Poimena Analysis

4. Lifetime management for maternal ewes, Mike Hyder, Research Officer, Department of Agriculture and Food, Western Australia

5. National Livestock Identification System (NLIS) for sheep and goats - what is the NLIS database? Leigh Sonnermann, …

Sheep Updates 2015 - Merredin, Bruce Mullan, Kate Pritchett, Kimbal Curtis, Chris Wilcox, Lynne Bradshaw, Geoff Lindon, Katherine Davies, Joe Young, Stephen Lee, Dawson Bradford, Khama Kelman, Lucy Anderton, Jaq Pearson, Jackie Jarvis, Ben Patrick

Sheep Updates

This session covers fourteen papers from different authors:

1. The Sheep Industry Business Innovation project, Bruce Mullan, Sheep Industry Development Director, Department of Agriculture and Food, Western Australia

2. Western Australian sheep stocktake, Kate Pritchett and Kimbal Curtis, Research Officers, Department of Agriculture and Food, Western Australia

3. Wool demand and supply - short term volatility, long term opportunities, Chris Wilcox, Principal of Poimena Analysis

4. Myths, Facts and the role of animal welfare in farming, Lynne Bradshaw, president, RSPCA WA

5. Latest research and development on breech strike prevention, Geoff Lindon, Manager Productivity and Animal Welfare, AWI

6. …

The Genetic Diversity Of Both Fecb Gene And Microsatellite Gc101is Associated With Reproduction Selection In Sheep, Zhangyuan Pan, Baoyun Zhang, Wenping Hu, Ran Di, Qiuyue Liu, Xiangyu Wang, Dehua Yin, Pingqing Wang, Mingxing Chu

Turkish Journal of Veterinary & Animal Sciences

The aims of study were to reveal the changes in genetic diversity in reproduction selection of sheep. Genetic polymorphisms of microsatellite GC101 locus and its linkage with the FecB gene were detected in Chinese local sheep (Small Tail Han and Hu sheep) and western sheep (Texel and Dorset) breeds. There was the same FecB mutation (A746G) in both Small Tail Han and Hu sheep as that in Booroola Merino ewes, but not in Texel and Dorset sheep. Seven alleles, from 192 bp to 210 bp, and 20 genotypes were detected at the GC101 locus in 447 individuals totally. The preponderant …

Impact Of B. Melitensis Rev-1 Vaccination On Brucellosis Prevalence, Adosinda Maria Coelho, Maria De Lurdes Pinto, Juan Garcia Diez, Ana Claudia Coelho

Turkish Journal of Veterinary & Animal Sciences

Trás-os-Montes e Alto Douro, in the northeastern region of Portugal, previously exhibited the highest brucellosis prevalence in the entire small ruminant population of Portugal. Consequently, a vaccination program of the whole population with Brucella melitensis Rev-1 was carried out from 2001 to 2004, and further compulsory Rev-1 vaccination of 3- to 6-month-old lambs and kids was carried out between 2005 and 2007. The prevalence of brucellosis decreased by 71.42% in 2004, with a 2-fold decrease occurring from 2005 to 2007. The reduction of brucellosis prevalence was statistically significant (P < 0.001) according to flock size. By species, brucellosis prevalence decreased 14.5-fold in sheep and 5.5-fold in goats in 2004. Regarding flock constitution, it decreased by 77% for pure flocks and 73% in mixed flocks in 2004. Regarding the animals involved in production, brucellosis prevalence decreased during the 7-year period. It was concluded that Rev-1 vaccination of the whole population was effective in decreasing brucellosis prevalence. These results contribute to the scarce information available regarding the effect of Rev-1 vaccination on different characteristics of flocks. They may be used to improve the efficiency of brucellosis eradication programs within livestock management.

Histomorphometric And Fractal Analysis Of Femoral, Tibial, And Metatarsal Compact Bone Samples In Sheep (Ovis Aries), Goat (Capra Hircus), And Roe Deer (Capreolus Capreolus), Alexandru Gudea, Andrei Stefan

Turkish Journal of Veterinary & Animal Sciences

Histological sections of femur, tibia, and metatarsals originating from sheep (Ovis aries), goat (Capra hircus), and roe deer (Capreolus capreolus) were examined in this study. Our research focused mainly on the quantitative characteristics of the microstructure of these bones. The areas, perimeters, minimum and maximum diameters of the secondary Haversian units, as well as structures of the primary osteonal units were assessed using comparative statistical methods. In addition to these parameters, the present paper investigated the usefulness of fractal analysis (fractal dimension and lacunarity), a new approach that quantifies the complexity and the emptiness pattern of biological structures. Moreover, our …

Polymorphisms Of Ovine Prion Protein (Prp) Gene In Pramenka Sheepbreed Population In Bosnia And Herzegovina, Ervin Zecevic, Admir Dokso, Amra Kazic, Muhamed Brka

Turkish Journal of Veterinary & Animal Sciences

Transmissible spongiform encephalopathies (TSEs) are a group of diseases that affect the nervous system and lead to death. The putative infectious agent is the host-encoded prion protein (PrP) and it appears that the development of scrapie in sheep is closely related to polymorphisms in the host PrP gene. The aim of this study was to investigate three well-known polymorphisms in exon 3 of the PrP gene (at codons 136, 154, and 171) that have a clear and significant effect on scrapie in sheep. Four other polymorphisms (at codons 145, 185, 231, and 237) that are yet undefined were also investigated. …

Genetic Relationships Among Four Turkish Sheep Breeds Using Microsatellites, Onur Yilmaz, Tamer Sezenler, Semi̇h Sevi̇m, İbrahi̇m Cemal, Orhan Karaca, Yalçin Yaman, Orhan Karadağ

Turkish Journal of Veterinary & Animal Sciences

The genetic structure of 4 Turkish breeds of sheep, Gökçeada, Kıvırcık, Karacabey Merino, and Sakız (SZ), was analyzed by genotyping with 17 microsatellite markers in 250 individuals. The microsatellites showed high levels of polymorphism, with means for total and effective number of alleles per locus of 20.71 and 7.04, respectively. The average observed and expected heterozygosity values were 0.66 and 0.87, respectively. It was found that a higher level of breed admixture existed in the 4 breeds, which was an important finding. It was also found that 7.9% of genetic variation resulted from difference between the populations, whereas 92.1% resulted …