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You searched for: Journal name Livestock science Remove constraint Journal name: Livestock science Publication Year 2009 Remove constraint Publication Year: 2009 Subject animal genetics Remove constraint Subject: animal genetics
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1. Analysis of mortality pattern among indigenous and upgraded pigs under subtropical hill agro climatic conditions in eastern Himalayas

Author:
Basumatary, R.; Naskar, S.; Kumaresan, A.; Khargharia, G.; Kadirvel, G.; Bardoloi, R.K.
Source:
Livestock science 2009 v.123 no.2-3 pp. 169-174
ISSN:
1871-1413
Subject:
mortality; swine breeds; swine; subtropics; hills; mountains; genetic correlation; animal performance; breed differences; seasons; animal genetics; India
Abstract:
... Mortality records of indigenous and upgraded pigs, reared under subtropical hill agro climatic conditions, were collected for the period of 11 years (1993-2003), analyzed and the mortality pattern was correlated with genetic group, age of pigs, climatic factors and causes of death. Results revealed that there was significant (p <0.05) difference in mortality between the indigenous (6.05%) and upgr ...
DOI:
10.1016/j.livsci.2008.11.010

2. Breeding programme for Piétrain pigs in Bavaria with an estimation of genetic trends and effective population size

Author:
Habier, D.; Götz, K.-U.; Dempfle, L.
Source:
Livestock science 2009 v.123 no.2-3 pp. 187-192
ISSN:
1871-1413
Subject:
estimation; sire evaluation; animal performance; Pietrain; population size; artificial insemination; selection criteria; animal genetics; swine; Germany
Abstract:
... Population structure, performance testing and breeding scheme of the sire breed Piétrain in Bavaria were analyzed as a basis for further optimization studies of the breeding programme. To evaluate the current breeding programme, genetic trends and effective population size were estimated. Four data sets were used which contained breeding animals born between 1981 and 2005, estimated breeding value ...
DOI:
10.1016/j.livsci.2008.11.007

3. Estimation of genetic parameters of racing performance in Iranian Thoroughbred horses

Author:
Bakhtiari, J.; Kashan, N.E.J.
Source:
Livestock science 2009 v.120 no.1-2 pp. 151-157
ISSN:
1871-1413
Subject:
estimation; animal genetics; racing performance; Thoroughbred; racehorses; long term effects; animal age; mathematical models; heritability; Iran
Abstract:
... The aim of this study was to estimate the genetic parameters of racing performance and investigate the fixed effects that influence the performance of Thoroughbred race horses. The data included the performance of two, three and four year old horses raced in flat races and consisted of 10,800 time records and 10,912 ranking value. Two criteria were used in order to analyze the performance: racing ...
DOI:
10.1016/j.livsci.2008.05.007

4. Genetic analysis of six production traits in Peruvian alpacas

Author:
Gutiérrez, J.P.; Goyache, F.; Burgos, A.; Cervantes, I.
Source:
Livestock science 2009 v.123 no.2-3 pp. 193-197
ISSN:
1871-1413
Subject:
fleece; diameter; genetic correlation; natural fibers; fiber quality; alpacas; heritability; animal performance; animal genetics; Peru
Abstract:
... In this study a total of 6499 records were obtained for fibre diameter (FD) and coefficient of variation of FD (CV), 3283 records for greasy fleece weight (GFW), staple length (SL) and shearing interval (SI) and 1802 records of textile value index (TV) obtained from an experimental herd of alpacas exploited in the Peruvian Altiplano. The estimated heritabilities were: 0.412±0.015 (FD), 0.321±0.013 ...
DOI:
10.1016/j.livsci.2008.11.006

5. Genetic and phenotypic parameter estimates for reproduction traits in the Boer dam

Author:
Zhang, Chun-Yan; Chen, Shi-Lin; Li, Xiang; Xu, De-Qing; Zhang, Ying; Yang, Li-Guo
Source:
Livestock science 2009 v.125 no.1 pp. 60-65
ISSN:
1871-1413
Subject:
parity (reproduction); breed differences; phenotype; animal morphology; genetic correlation; dams (mothers); reproductive traits; animal genetics
Abstract:
... Variance components and further phenotypic and genetic parameters for reproduction traits including litter size at birth (LSB) and at weaning (LSW), gestation period (GP) and litter weight at birth (LWB) were estimated by use of the MTGSAM procedure fitting two-trait animal model (y = X b + Z a a + Z P P + e ) in Boer dams. The calculations were based on 1205 parities of 435 Boer dams at Boer Goat ...
DOI:
10.1016/j.livsci.2009.03.002

6. Genetic connectedness between seven European countries for performance in jumping competitions of warmblood riding horses

Author:
Ruhlmann, C.; Bruns, E.; Fraehr, E.; Philipsson, J.; Janssens, S.; Quinn, K.; Hellsten, E. Thorén; Ricard, A.
Source:
Livestock science 2009 v.120 no.1-2 pp. 75-86
ISSN:
1871-1413
Subject:
contest judging; mathematical models; estimation; genetic correlation; stallions; pedigree; animal genetics; horse breeds; Europe
Abstract:
... The aim of this study was to evaluate the genetic connectedness between seven European populations of show jumping horses. Data on stallions bred for jumping and their pedigree up to three generations were provided by seven countries, including 6317 stallions and 22324 different horses. Four different methods were used to estimate the genetic connectedness. Common stallions between countries varie ...
DOI:
10.1016/j.livsci.2008.04.016

7. Geographical isolation of native sheep breeds in the UK--Evidence of endemism as a risk factor to genetic resources

Author:
Carson, Amanda; Elliott, Matt; Groom, Julian; Winter, Agnes; Bowles, Dianna
Source:
Livestock science 2009 v.123 no.2-3 pp. 288-299
ISSN:
1871-1413
Subject:
breed differences; geographical variation; population characteristics; risk factors; genetic variation; sheep breeds; animal genetics; United Kingdom
Abstract:
... This study addresses the potential risk to the genetic resources of UK sheep breeds from endemism. Twelve native breeds are analysed that exist in significant numbers and continue to be commercially farmed livestock. The breeds were selected to represent regions of the British Isles: North of England hill breeds (Herdwick, Rough Fell, Lonk, Dalesbred), South of England breeds (Southdown, Romney, D ...
DOI:
10.1016/j.livsci.2008.11.026

8. Estimation of genetic parameters of conformation traits in Iranian Thoroughbred horses

Author:
Bakhtiari, J.; Heshmat, G.
Source:
Livestock science 2009 v.123 no.2-3 pp. 116-120
ISSN:
1871-1413
Subject:
estimation; females; body conformation; body regions; males; gender differences; phenotypic correlation; Thoroughbred; heritability; selection criteria; horses; animal genetics; breeding value; Iran
Abstract:
... The aim of this study was to estimate the genetic parameters of conformation traits in Iranian Thoroughbred race horses. The data set included the conformation records of 607 Thoroughbred horses. In this study, 10 conformation traits were recorded. The effect of sex was significant for length of back line (P <0.05), withers height (P <0.05), circumference of front cannon (P <0.001), and circumfere ...
DOI:
10.1016/j.livsci.2008.10.014

9. Mitochondrial D-loop nucleotide sequences of Egyptian river buffalo: Variation and phylogeny studies

Author:
Hassan, A.A.; El Nahas, S.M.; Kumar, S.; Godithala, P.S.; Roushdy, Kh.
Source:
Livestock science 2009 v.125 no.1 pp. 37-42
ISSN:
1871-1413
Subject:
mitochondrial DNA; nucleotide sequences; buffaloes; phylogeny; animal genetics; maternal lineage; genetic variation; Egypt
Abstract:
... The complete mitochondrial D-loop region of 48 Egyptian buffalo representing the two main subpopulations from Northern-Egypt and Southern-Egypt was sequenced and analyzed. To the best of our knowledge this is the first published data on the complete mitochondrial D-loop sequences of Egyptian river buffalo. Analysis of D-loop sequences revealed 28 different haplotypes resulting from 77 polymorphic ...
DOI:
10.1016/j.livsci.2009.03.001

10. Research opportunities in the field of animal genetic resources

Author:
Cardellino, Ricardo A.; Boyazoglu, Jean
Source:
Livestock science 2009 v.120 no.3 pp. 166-173
ISSN:
1871-1413
Subject:
research; animal genetic resources; animal genetics; animal breeding
Abstract:
... Animal genetic resources are those animal species that are used, or may be used, for the production of food and agriculture, and the populations within each of them. The working unit of a database for farm animal genetic resources is the breed, a term taken in its widest possible sense to mean a population within the species, possessing a number of particular traits that permit the grouping of the ...
DOI:
10.1016/j.livsci.2008.07.002

11. Simultaneous identification and combined genotype effects analysis of pre-implantation protein 3 (prei3) and estrogen receptor (ESR) gene in pigs

Author:
Ye, L.Z.; Niu, B.Y.; Luo, L.F.; Shao, G.C.; Mei, S.Q.; Deng, C.Y.; Jiang, S.W.; Xiong, Y.Z.; Li, F.E.
Source:
Livestock science 2009 v.125 no.1 pp. 80-83
ISSN:
1871-1413
Subject:
gilts; loci; animal proteins; oviducts; hormone receptors; estrogens; genotype; genes; genetic techniques and protocols; reproductive traits; progeny testing; animal genetics
Abstract:
... A method allowing simultaneous genotyping of two loci: pre-implantation protein 3 (prei3) and estrogen receptor (ESR) was presented. In multiplex PCR amplification, two amplicons were simultaneously produced a 294bp fragment of prei3 gene and a 121bp fragment of ESR gene and were then subjected to ''one-tube'' restriction enzyme digestion with MspI and PvuII. A total of 92 sows from the 4th dam li ...
DOI:
10.1016/j.livsci.2009.02.017

12. A reliable method for characterization of the goat CSN1S1 E allele

Author:
Dettori, M.L.; Vacca, G.M.; Carcangiu, V.; Pazzola, M.; Mura, M.C.; Rocchigiani, A.M.
Source:
Livestock science 2009 v.125 no.1 pp. 105-108
ISSN:
1871-1413
Subject:
alleles; goats; polymerase chain reaction; reliability; nucleotide sequences; animal genetics
Abstract:
... Goat αs₁-casein, coded by the CSN1S1 gene, is a highly polymorphic protein. The E allele is characterized by the insertion of a long interspersed nuclear element (LINE) in the 19th exon of the gene. This insertion is probably responsible for the reduced levels of αs₁-casein found in milk from animals expressing the E allele. The present study aimed to develop a robust method for the detection of t ...
DOI:
10.1016/j.livsci.2009.03.007