Blood Biochemical Polymorphisms in Rabbits Presently Bred in Spain: Genetic Variation and Distances amongst Populations

Abstract

A total of 816 rabbits, belonging to breeds presently bred in Spain (Spanish Common, Spanish Giant, Butterfly, Lyone de Bourgogne, New Zealand White, Californian and a hybrid line obtained from crosses between selected individuals of the latter two), were tested using nine blood electrophoretic markers: Hb, Ak, Co, Tf, Es-l, Es-2, Es-3, Ada and Pgd. The latter five proteins were found polymorphic, each being controlled by one locus and showing autosomal co-dominant Mendelian inheritance. Three of these loci (Es-1, Es-2 and Pgd) have two alleles, and the remaining two (Es-3 and Ada) have three alleles. These polymorphic loci were used to study the population structure and breed similarities genetically.Gene frequencies for Es-1, Es-3 and Ada clearly differed amongst populations. Intra-breed variation was found for Es-3 in the Spanish Common breed. Lack of Hardy-Weinberg equilibrium was only found for Es-2 in most populations. Average inbreeding coefficients were not significantly different from zero, except in Spanish Giants (f = O· 09) and New Zealand Whites (f = -0·04). To estimate the genetic variability the average degree of heterozygosity was calculated and gave values of 0·40-0·56 for Es-1, Ada or Es-3, 0,82-0,84 for Es-2, due to an excess of heterozygotes, and 0,08-0,10

Status and origin of Egyptian local rabbits in comparison with Spanish common rabbits using mitochondrial DNA sequence analysis

“…We observed that the diversity limitation in Egyptian domestic breeds (EBR and EBB) which agreed with Grimal et al (2012). By the same token, in SCR which agreed with Zaragoza et al (1987). They found high inbreeding levels in previous breeds by using microsatellites and blood protein electrophoresis, respectively.…”

Haemoglobin genetic types and its association with qualitative traits in West African Dwarf sheep

“…The haemoglobin genotypes, two homozygotes AA and BB and one heterozygote AB, detected in this study agree with the general observation that alleles A and B at the same locus are capable of producing three different genotypes AA, AB and BB, in different species of animals (Zaragoza et al, 1987;Tunon et al, 1989). The finding also agrees with Rodero et al (1996) in Lebrijan Churro breed of Andalusia sheep but not in Merino sheep and Akinyemi and Salako (2010) in WAD sheep.…”