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Polymorphism in some ovine genes associated with growth / Lamis Magdy Ahmed Ghoneim ; Supervised Said Z. Mostafa , Hanan A. Mohamed , Abdelbary M. Prince

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Lamis Magdy Ahmed Ghoneim , 2021Description: 75 P. : charts , facimiles ; 25cmOther title:
  • الانماط المختلفة لبعض الجينات ذات الصلة بالنمو فى الاغنام [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Veterinary Medicine - Department of Biochemistry and Chemistry Nutrition Summary: Myostatin is an inhibitor of skeletal muscle growth and a mutation in the gene coding region leads to increased muscling. Calpains play a major role in post mortem tenderization and calpastatin is the endogenous inhibitor of calpain proteases and regulates the rate and extent of post mortem tenderization. Therefore, they are considered as candidate genes for meat and growth traits. Blood samples were collected from Rahmani (N=28), Ossimi (N=45) and Barki (N=50) sheep and DNA were extracted using DNA extraction kit. Genotypes were determined by PCR amplification followed by single-strand conformation polymorphism (SSCP) method for calpain gene and restriction fragment length polymorphism (RFLP) method for calpastatin and myostatin genes. Based on results, all studied genes were found to be polymorphic in all breeds. Genotype frequencies were found to vary with variant genes in different breeds. In these populations, the three loci showed Hardy-Weinberg equilibrium (P<0.05). In MSTN locus, genotype mm was the highest frequency of both Rahmani and Ossimi breeds while the genotype Mm was the most frequent in Barki sheep. In CAPN locus, BB genotype was the most frequent in Rahmani breed while AA genotype was the most frequent in Ossimi and Barki breeds. In CAST locus, NN genotype was prevalent in Rahmani breed while MN was prevalent in Ossimi and Barki breeds. Preliminary data was obtained about relative correlation of these genotypes to average growth rate/year. However, further study may be conducted to ascertain the association of these polymorphisms with other growth traits
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.10.04.M.Sc.2021.La.P (Browse shelf(Opens below)) Not for loan 01010110083286000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.10.04.M.Sc.2021.La.P (Browse shelf(Opens below)) 83286.CD Not for loan 01020110083286000

Thesis (M.Sc.) - Cairo University - Faculty of Veterinary Medicine - Department of Biochemistry and Chemistry Nutrition

Myostatin is an inhibitor of skeletal muscle growth and a mutation in the gene coding region leads to increased muscling. Calpains play a major role in post mortem tenderization and calpastatin is the endogenous inhibitor of calpain proteases and regulates the rate and extent of post mortem tenderization. Therefore, they are considered as candidate genes for meat and growth traits. Blood samples were collected from Rahmani (N=28), Ossimi (N=45) and Barki (N=50) sheep and DNA were extracted using DNA extraction kit. Genotypes were determined by PCR amplification followed by single-strand conformation polymorphism (SSCP) method for calpain gene and restriction fragment length polymorphism (RFLP) method for calpastatin and myostatin genes. Based on results, all studied genes were found to be polymorphic in all breeds. Genotype frequencies were found to vary with variant genes in different breeds. In these populations, the three loci showed Hardy-Weinberg equilibrium (P<0.05). In MSTN locus, genotype mm was the highest frequency of both Rahmani and Ossimi breeds while the genotype Mm was the most frequent in Barki sheep. In CAPN locus, BB genotype was the most frequent in Rahmani breed while AA genotype was the most frequent in Ossimi and Barki breeds. In CAST locus, NN genotype was prevalent in Rahmani breed while MN was prevalent in Ossimi and Barki breeds. Preliminary data was obtained about relative correlation of these genotypes to average growth rate/year. However, further study may be conducted to ascertain the association of these polymorphisms with other growth traits

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