Pedigree-based analysis of genetic variability in the registered Normande cattle breed in Colombia

Sarmiento, Derly Rodríguez; Tullo, Emanuela; Rizzi, Rita

doi:10.1071/an15057

Cited by 5 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even if the dams showed generally lower level of pedigree completeness, taking into account only first 5 generations in both groups more than 80 % of the ancestors were known. In agreement with previous studies the completeness of pedigrees had decreasing tendency with increasing number of known generations (Bernardes et al, 2016;Sarmiento et al, 2016;Utrera et al, 2018).…”

Section: Methodssupporting

confidence: 92%

Genomic and Pedigree-Based Inbreeding in Slovak Spotted Cattle

Kasarda¹,

Kadlečík²,

Trakovická³

et al. 2019

AGR

View full text Add to dashboard Cite

The objective of this study was to evaluate the level of inbreeding in population ofSlovak Spotted cattle and to compare its genomic and pedigree-based estimates.The genomic data have been obtained from in total of 37 AI sires and 50 sire damsgenotyped by using Illumina BovineSNP50v2 BeadChip and ICBF InternationalDairy and Beef v3, respectively. The genealogical information have been obtainedfrom the database of Breeding Services of the Slovak Republic, s. e. The pedigreefile consisted of 109,686 individuals (105,229 dams and 4,457 sires), while thereference population included only living animals, AI sires (129) and dams(36,949). The genomic inbreeding (FROH) was computed as the length of thegenome present in runs of homozygosity (ROH) divided by the total length of theautosomal genome covered by SNPs on the chip and the pedigree-based inbreeding(FPED) was calculated based on assumption that inbreeding of an individual reflectsthe probability that both alleles in one locus are derived from the same ancestor orare identical by descent. The ROH segments greater than 4 Mb (FROH > 4Mb) coveredin average 2.09 % of the genome, while the ROH segments greater than 16 Mb(FROH > 16Mb) achieved 0.43 % which indicated in analysed population recentinbreeding. Similarly, the increase of inbreeding across generation signalized theaverage ΔFPED computed from pedigree information (0.094%). However, thepedigree-based and genomic estimates of inbreeding differ from each other (inaverage FROH>4=0.02; FPED=0.004). In recent generation, the obtained values ofFROH indicated considerably higher degree of inbreeding.

show abstract

Section: Methodssupporting

confidence: 92%

Genomic and Pedigree-Based Inbreeding in Slovak Spotted Cattle

Kasarda¹,

Kadlečík²,

Trakovická³

et al. 2019

AGR

View full text Add to dashboard Cite

show abstract

“…For example, for the reference populations of the Danish breeds Danish Holstein, Danish Jersey, and Danish Red, the following CGE values of 7.20, 7.36, 6.77 were observed and PCI values of 0.94, 0.9 and 0.93, respectively [ 63 ]. Not so high CGE was found in the breed Brown Swiss in Germany—6.24 [ 64 ], in Lidia cattle breed – 5.5 [ 65 ] or Normand cattle in Colombia– 5.21 [ 66 ].…”

Section: Discussionmentioning

confidence: 99%

Genealogical analysis of European bison population revealed a growing up population despite very low genetic diversity

et al. 2022

View full text Add to dashboard Cite

In 1919, the European bison population became extinct in the wild. The rescue of the lowland subspecies and the whole species was achieved mainly thanks to individuals from the Białowieża Forest (Polish-Belarusian border). There are currently two breeding lines—the lowland (purebred B. b. Bonasus) founded by 7 individuals and the lowland-Caucasian (hybrids of B. b. Bonasus and B. b. caucasicus) founded by 12 individuals. This genealogical study was conducted on 15,071 individuals recorded in the pedigree book between 1881 and 2020. Its objective was to determine the level of genetic variability and inbreeding almost 100 years after the rescue measures were initiated. The completeness of the pedigree of the reference population was 77% in the fifth generation backwards. A maximum of 23 generations can be traced back in the pedigree. The average inbreeding coefficient and the mean average relatedness of the reference population were very high, about 17% and 16% respectively. No significant amount of new inbreeding was discovered. The reference population has lost 9.11% of the total genetic diversity compared to the population of founders. A male of the Caucasian subspecies Kaukasus was discovered among the ancestors of the lowland lineage reference population. The effective population size calculated based on the increase in inbreeding was 23.93 individuals, based on complete generations equivalent it was 16.1 individuals. Wright’s F-statistics showed very small differences in genotypic frequencies between individuals within the two lineages in the reference population (FIS = 0.10), between individuals and the total population (FIT = 0.04) and low differentiation between lineages (FST = 0.06). The population of the European bison from the Białowieża Forest is generally very uniform but still shows good fitness.

show abstract

Impact of inbreeding on milk fatty acids of a Brazilian Holstein cattle

et al. 2020

View full text Add to dashboard Cite

Context Reproductive technologies may either contribute to the increase of genetic gains or inbreeding levels in dairy cattle breeding programs and herds. In general, studies have evaluated the impacts of inbreeding on traditional traits, such as production and reproduction. However, studies on novel traits, such as milk fatty acids profile, are scarce in the literature. Aim We aimed to evaluate the impact of inbreeding levels on milk fatty acids profile measured in a Brazilian Holstein cattle population. Methods Monthly records of the percentages (%) of palmitic, stearic, oleic, total saturated, unsaturated, monounsaturated and polyunsaturated fatty acids in milk were collected from 2047 Holstein cows between May and December 2012. The pedigree file contained 7963 animals over seven generations. The inbreeding trend was evaluated by linear regression of inbreeding coefficients on generations. The inbreeding impacts on breeding and phenotypic values were evaluated by linear regression of breeding values and phenotypic values on generations respectively. Breeding values were obtained by a Bayesian approach based on an animal model that included the systematic effect of contemporary group, cubic effect of days in milk as a covariate, and the random direct additive genetic and animal permanent environmental effects. Key results The average inbreeding coefficient was 0.28% for all animals, and 1.39% for inbred animals. Inbreeding tended to increase 0.24% per generation (P-value <0.0001). The regression coefficients of phenotypic values on inbreeding were not significant for saturated, unsaturated, monounsaturated, palmitic, stearic and oleic fatty acids (P-values >0.18, 0.10, 0.16, 0.26, 0.51 and 0.09 respectively); whereas for polyunsaturated fatty acids, they were significant (P-value <0.04), with an increase of –0.000978% on phenotypic values for each 1% increase in inbreeding. The regression coefficients of breeding values on inbreeding were not significant for unsaturated, monounsaturated, polyunsaturated, stearic and oleic fatty acids (P-values >0.33, 0.78, 0.48, 0.32 and 0.07 respectively). However, they were significant for saturated and palmitic fatty acids (P-values <0.03 and 0.0001 respectively), presenting an increase of 0.000689% and 0.000283% respectively on breeding values for each 1% increase in inbreeding. Conclusions There was a significant increase in inbreeding coefficients over the studied generations; however, the impacts on both breeding and phenotypic values were small, when significant. Implications Our study may contribute to the understanding of how inbreeding levels may affect the fatty acids profile in a Brazilian Holstein cattle population, as well as encourage future research on this subject.

show abstract

Pedigree-based analysis of genetic variability in the registered Normande cattle breed in Colombia

Cited by 5 publications

References 30 publications

Genomic and Pedigree-Based Inbreeding in Slovak Spotted Cattle

Genomic and Pedigree-Based Inbreeding in Slovak Spotted Cattle

Genealogical analysis of European bison population revealed a growing up population despite very low genetic diversity

Impact of inbreeding on milk fatty acids of a Brazilian Holstein cattle

Contact Info

Product

Resources

About