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Articles by M.K.A. Ahmed
Total Records ( 2 ) for M.K.A. Ahmed
  K.M. Elamin , I.A. Yousif , M.K.A. Ahmed , S.A. Mohammed and A.A. Tameem Eldar
  This experiment aimed at the estimation of the genetic parameters for morphometric traits of the Sudanese Local rabbits. Traits studied were: Body Weight (BWT), Ear Length (EL), Fore Limb (FL), Hind Limb (HL), Body Length (BL), height at wither (HTW), Nose to Shoulder (NS), Thigh Girth (TG), Tail Length (TL), abdominal circumference (ABC) and Heart Girth (HG). Data on 74 full pedigreed rabbits at 3 and 5 month of age were used to estimate the heritabilities, genetic, phenotypic and environmental correlation coefficients for these morphometric traits. Heritabilities and various correlation coefficients at 3 month were inestimable for EL. Heritabilties were estimated from sire component of variances. Heritabilities for other traits at this age were moderate to high (0.211-0.570) except for HG (0.130). The genetic correlations among traits studied were generally positive and high. On the other hand, heritability estimates at 5 month of age for all the traits studied were moderate to high (0.223-0.521). The genetic correlation coefficients at 5 month of age of heart girth with all traits studied except ear length (non estimable) and body length (moderate) were high. Whereas, the estimations of the genetic correlation coefficients for body weight with ear length, height at wither, nose to shoulder and tail length was low and negative. It is concluded that linear trait can be used, as alternative guide for body weight, in selection programs aiming at local rabbit improvement.
  S.M. Abu Sara , A. Said Ahmed , M.K.A. Ahmed , M. Reissmann , G.A. Brockmann and S.A. Rahmatalla
  The aim of the study was the characterization of DGAT1 variants in Sudanese dairy cattle breeds. In this study, we examined 94 Kenana and 91 Butana dairy cattle from two regions of Sudan. We genotyped the DGAT1 sequence variant AJ318490.1:g.10433/10434 AA>GC that leads to the Lysine-Alanine substitution at position 232 (K232A) in the protein and the VNTR polymorphism in the promoter region. Genotyping was performed by allele specific PCR and PCR fragment lengths determination, respectively. In both breeds, the DGAT1 Lysine variant (232K) that is associated with high fat and protein content as well as high fat yield in other breeds is the high frequent allele. The frequencies of the 232K allele were 96.3 and 84.6% in Kenana and Butana breeds, respectively. At the DGAT1 promoter VNTR locus, four alleles containing four to seven repeats of the 18 bp motif were found in both breeds. The highest frequent allele was the VNTR allele 3 containing five repeats with 60.4 and 57.5% in Kenana and Butana breeds, respectively. In conclusion, the two examined Sudanese dairy cattle breeds do not differ in allele frequencies at the DGAT1 locus.
 
 
 
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