2018 Cilt 37 Sayı 1

Permanent URI for this collectionhttps://hdl.handle.net/11452/14439

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Browsing by Subject "Cattle"

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    Analysis of IGf1 C472t and TG C422t polymorphisms in Turkish grey steppe and holstein crossbred bulls
    (Uludağ Üniversitesi, 2018-03-01) Ardıçlı, Sena
    The aim of the study was to determine genotypic distribution of bovine insulin-like growth factor 1 and thyroglobulin genes in Turkish Grey Steppe (Boz) and Holstein crossbred bulls. In the study, unrelated 30 Turkish Grey and 26 Holstein crossbred cattle were used. Genomic DNA was isolated from whole blood using standart phenol-chloroform extraction method. The polymerase chain reaction-restriction fragment length polymorphism technique was used for genotyping of C472T and C422T polymorphisms in insulin-like growth factor 1 and thyroglobulin genes, respectively. Hardy-Weinberg equilibrium was calculated by using PopGene software program. In addition the population indexes including heterozygosity, number of effective alleles and polymorphism information content were determined on the basis of allelic distribution. For insulin-like growth factor 1 gene, A allele frequency was higher and BB genotype was not present in both breed groups. For thyroglobulin gene, TT genotype was not present and moreover C allele was almost fixed in both Turkish Grey and Holstein crossbred bulls. In addition, extremely low minor allele frequencies in resulted in low genetic variabilities of population indexes. The present results may be useful for future studies conducted on bovine genome with respect to insulin-like growth factor 1 and thyroglobulin genes.
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    Distribution of hoof lesions and hoof health strategies on a robotic milking farm
    (Uludağ Üniversitesi, 2018-03-12) Çeçen, Göksen; İlhan, Gürkan; Orman, Abdülkadir; Uludağ Üniversitesi/Veteriner Fakültesi.
    In Turkey, the use of robotic milking technology is still very new. The scientific data showing the effects on animal health are important as well as the studies related to the economic performance of milking robots. The aim of this study was to evaluate the hoof diseases encountered on dairy cattle farms working with robotic milking system and to determine the causes and to provide the necessary precautions to prevent and control hoof health problems. In the study, 93 Holstein dairy cattle aged between 35-54 months were evaluated in a dairy farm with two robotic milking system (system capacity of 120 cows/day). The locomotion scores were recorded and the cows’ feet were examined in hoof trimming chute and claws of all cows were trimmed according to biomechanical characteristics of foot. The treatment method was determined according to the condition of the lesion in cases of hoof disease and the results of recovery were followed. In the herd, cases of claw deformation (6.4%; n=6), sole ulcer (4.3%; n=4), white line disease (3.2%; n=3), digital dermatitis (8.6%; n=8), heel lesion (6.4%; n=6), foot rot (1.0%; n=1), limax (2.1%; n=2), hoof crack (2.1%; n=2) and coroner inflammation (1.0%; n=1) were recorded. Evaluated etiologically, it has been found that mistakes in the application of bath solutions used in the single footbath at the exit of the robotic milking unit in the formation of infectious foot diseases, feeding mistakes made without regard to cow traffic in the case of non infectious foot diseases and exposure of the foot to traumas due to not paying attention to comfort in the feeding areas are effective. As a result, to prevent management malfunctions causing metabolic problems, stress and traumas in animal, the use of senseless technology should be avoided in order to ensure sustainable hoof health on robotic milking farms.
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    Genetik ve postmortem mekanizmaların sığır eti renk özellikleri üzerine etkisi
    (Uludağ Üniversitesi, 2018-03-16) Ardıçlı, Sena; Uludağ Üniversitesi/Veteriner Fakültesi.
    Bu makale genetik ve çevresel faktörlerin sığır eti renk özelliklerine etkileri hakkındaki güncel bilgilerin bir derlemesidir. Sığır eti üretim işletmelerinde, renk özellikleri bakımından tercih edilen et ürünlerinin üretilebilmesi için çevresel ve genetik faktörlerden oluşan mekanizmaların anlaşılabilmesi gerekmektedir. Bu bağlamda genotipik ve çevresel etkiler arasındaki interaksiyonların bu özelliği nasıl etkilediği hakkında genel bir bakış açısı sunulmuştur. Et rengi, tüketicilerin seçimini ve dolayısıyla ürünlerin ekonomik değerlerini belirlemektedir. Et renginin belirlenmesinde kullanılan güncel yöntemler, postmortem süreç ile çevresel ve LEP, CAPN, CAST, AKR1B1, GHR, MYOD, DNAH2, USP43, ANK1 aday genlerinden oluşan faktörlerin et rengi üzerine etkileri sunulmuştur. Bununla birlikte sığır yetiştiriciliğinde çevresel ve genetik faktörler arasındaki interaksiyonlara ait spesifik örnekler özetlenmiştir. Sonuç olarak, optimum et renginin elde edilebilmesi sadece kesim öncesi ve sonrası sürece ait nitelikler değil aynı zamanda moleküler mekanizmalara da bağlıdır.