Journal of Animal Breeding and Genetics This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Genome ‐wide association study for milk somatic cell score in holstein cattle using copy number variation as markers
Summary Mastitis, the most common and expensive disease in dairy cows, implies significant losses in the dairy industry worldwide. Many efforts have been made to improve genetic mastitis resistance in dairy populations, but low heritability of this trait made this process not as effective as desired. The purpose of this study was to identify genomic regions explaining genetic variation of somatic cell count using copy number variations (CNVs) as markers in the Holstein population, genotyped with the Illumina BovineHD BeadChip. We found 24 and 47 copy number variation regions significantly associated with estimated breeding...
Source: Journal of Animal Breeding and Genetics - July 31, 2016 Category: Genetics & Stem Cells Authors: M. Dur án Aguilar, S.I. Román Ponce, F.J. Ruiz López, E. González Padilla, C.G. Vásquez Peláez, A. Bagnato, M.G. Strillacci Tags: Original Article Source Type: research

Sensitivity of breeding values for carcass traits of meat ‐type quail to changes in dietary (methionine + cystine):lysine ratio using reaction norm models
Summary Our objective was to evaluate changes in breeding values for carcass traits of two meat‐type quail (Coturnix coturnix) strains (LF1 and LF2) to changes in the dietary (methionine + cystine):lysine ([Met + Cys]:Lys) ratio due to genotype by environment (G × E) interaction via reaction norm. A total of 7000 records of carcass weight and yield were used for analyses. During the initial phase (from hatching to day 21), five diets with increasing (Met + Cys):Lys ratios (0.61, 0.66, 0.71, 0.76 and 0.81), containing 26.1% crude protein and 2900 kcal ME/kg, were evaluated. Analyses were performed using random ...
Source: Journal of Animal Breeding and Genetics - July 31, 2016 Category: Genetics & Stem Cells Authors: J.A. Miranda, A.V. Pires, L.R.A. Abreu, L.F.M. Mota, M.A. Silva, C.M. Bonaf é, H.J.D. Lima, P.G.M.A. Martins Tags: Original Article Source Type: research

Genetic analyses of herding traits in the Border Collie using sheepdog trial data
Summary The aim of this study was to evaluate the quality of the data provided from sheepdog trials in Norway, estimate heritabilities, repeatabilities and genetic correlations for the traits included in the trial and make recommendations on how sheepdog trials best can be utilized in the breeding of Border Collies in Norway. The analyses were based on test results from sheepdog trials carried out in Norway from 1993 to 2012. A total of 45 732 records from 3841 Border Collies were available, but after quality assurance only a third was left. The results demonstrated little information in the data. Heritabilities varied be...
Source: Journal of Animal Breeding and Genetics - July 31, 2016 Category: Genetics & Stem Cells Authors: S. Storteig Horn, G. Steinheim, H. Fjerdingby Olsen, H.F. Gjerjordet, G. Klemetsdal Tags: Original Article Source Type: research

Conservation priorities for the different lines of Dutch Red and White Friesian cattle change when relationships with other breeds are taken into account
This study investigated the genetic diversity in the Dutch Red and White Friesian (DFR) cattle breed and its contribution to the total genetic diversity in the pool of the Dutch dairy breeds. All Dutch cattle breeds are clearly distinct, except for Dutch Friesian breed (DF) and DFR and have their own specific genetic identity. DFR has a small but unique contribution to the total genetic diversity of Dutch cattle breeds and is closely related to the Dutch Friesian breed. Seven different lines are distinguished within the DFR breed and all contribute to the diversity of the DFR breed. Two lines show the largest contributions...
Source: Journal of Animal Breeding and Genetics - July 27, 2016 Category: Genetics & Stem Cells Authors: B. Hulsegge, M.P.L. Calus, J.K. Oldenbroek, J.J. Windig Tags: Original Article Source Type: research

Risk aversion affects economic values of blue fox breeding scheme
Summary The profit and production of an average Finnish blue fox farm was simulated using a deterministic bio‐economic farm model. Risk was included using Arrow‐Prat absolute risk aversion coefficient and profit variance. Risk‐rated economic values were calculated for pregnancy rate, litter loss, litter size, pelt size, pelt quality, pelt colour clarity, feed efficiency and eye infection. With high absolute risk aversion, economic values were lower than with low absolute risk aversion. Economic values were highest for litter loss (18.16 and 26.42 EUR), litter size (13.27 and 19.40 EUR), pregnancy (11.99 and 18.39 EUR...
Source: Journal of Animal Breeding and Genetics - July 19, 2016 Category: Genetics & Stem Cells Authors: J. Peura, R. Kempe, I. Strandén, L. Rydhmer Tags: Original Article Source Type: research

Kalle Maijala 1927 –2016
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - July 13, 2016 Category: Genetics & Stem Cells Authors: Asko M äki‐Tanila Tags: Obituary Source Type: research

Double ‐decker ark of animal breeds
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - July 13, 2016 Category: Genetics & Stem Cells Authors: D. Martin ‐Collado Tags: Book Review Source Type: research

Kalle Maijala 1927–2016
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - July 13, 2016 Category: Genetics & Stem Cells Authors: Asko Mäki‐Tanila Tags: Obituary Source Type: research

Double‐decker ark of animal breeds
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - July 13, 2016 Category: Genetics & Stem Cells Authors: D. Martin‐Collado Tags: Book Review Source Type: research

ICQG 5 on Madison's Isthmus links genomics and statistics of complex traits
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - July 13, 2016 Category: Genetics & Stem Cells Authors: Henner Simianer, Peter Sørensen Tags: Editorial Source Type: research

Use of high ‐density SNP data to identify patterns of diversity and signatures of selection in broiler chickens
Summary The development of broiler chickens over the last 70 years has been accompanied by large phenotypic changes, so that the resulting genomic signatures of selection should be detectable by current statistical techniques with sufficiently dense genetic markers. Using two approaches, this study analysed high‐density SNP data from a broiler chicken line to detect low‐diversity genomic regions characteristic of past selection. Seven regions with zero diversity were identified across the genome. Most of these were very small and did not contain many genes. In addition, fifteen regions were identified with diversity i...
Source: Journal of Animal Breeding and Genetics - June 27, 2016 Category: Genetics & Stem Cells Authors: J.J. Stainton, B. Charlesworth, C.S. Haley, A. Kranis, K. Watson, P. Wiener Tags: Original Article Source Type: research

An evaluation of alternative selection indexes for a non ‐linear profit trait approaching its economic optimum
This study used simulation to evaluate the performance of alternative selection index configurations in the context of a breeding programme where a trait with a non‐linear economic value is approaching an economic optimum. The simulation used a simple population structure that approximately mimics selection in dual purpose sheep flocks in New Zealand (NZ). In the NZ dual purpose sheep population, number of lambs born is a genetic trait that is approaching an economic optimum, while genetically correlated growth traits have linear economic values and are not approaching any optimum. The predominant view among theoretical ...
Source: Journal of Animal Breeding and Genetics - May 31, 2016 Category: Genetics & Stem Cells Authors: D. Martin ‐Collado, T.J. Byrne, B. Visser, P.R. Amer Tags: Original Article Source Type: research

Impact of fitting dominance and additive effects on accuracy of genomic prediction of breeding values in layers
In conclusion, fitting dominance effects did not impact accuracy of genomic prediction of breeding values in this population. (Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - May 31, 2016 Category: Genetics & Stem Cells Authors: M. Heidaritabar, A. Wolc, J. Arango, J. Zeng, P. Settar, J.E. Fulton, N.P. O'Sullivan, J.W.M. Bastiaansen, R.L. Fernando, D.J. Garrick, J.C.M. Dekkers Tags: Original Article Source Type: research

Use of high‐density SNP data to identify patterns of diversity and signatures of selection in broiler chickens
Summary The development of broiler chickens over the last 70 years has been accompanied by large phenotypic changes, so that the resulting genomic signatures of selection should be detectable by current statistical techniques with sufficiently dense genetic markers. Using two approaches, this study analysed high‐density SNP data from a broiler chicken line to detect low‐diversity genomic regions characteristic of past selection. Seven regions with zero diversity were identified across the genome. Most of these were very small and did not contain many genes. In addition, fifteen regions were identified with diversity i...
Source: Journal of Animal Breeding and Genetics - May 31, 2016 Category: Genetics & Stem Cells Authors: J.J. Stainton, B. Charlesworth, C.S. Haley, A. Kranis, K. Watson, P. Wiener Tags: Original Article Source Type: research

Microsatellite diversity of the Nordic type of goats in relation to breed conservation: how relevant is pure ancestry?
Summary In the last decades, several endangered breeds of livestock species have been re‐established effectively. However, the successful revival of the Dutch and Danish Landrace goats involved crossing with exotic breeds and the ancestry of the current populations is therefore not clear. We have generated genotypes for 27 FAO‐recommended microsatellites of these landraces and three phenotypically similar Nordic‐type landraces and compared these breeds with central European, Mediterranean and south‐west Asian goats. We found decreasing levels of genetic diversity with increasing distance from the south‐west Asian...
Source: Journal of Animal Breeding and Genetics - May 31, 2016 Category: Genetics & Stem Cells Authors: J.A. Lenstra, J. Tigchelaar, I. Biebach, , J.H. Hallsson, J. Kantanen, V.H. Nielsen, F. Pompanon, S. Naderi, H.‐R. Rezaei, N. Sæther, O. Ertugrul, C. Grossen, G. Camenisch, M. Vos‐Loohuis, M. Straten, E.A. Poel, J. Windig, K. Oldenbroek Tags: Original Article Source Type: research