scholarly journals Simultaneous estimation of genetic parameters for production and litter size traits in Czech Large White and Czech Landrace pigs

2013 ◽  
Vol 58 (No. 9) ◽  
pp. 429-436 ◽  
Author(s):  
E. Krupa ◽  
J. Wolf
Keyword(s):  
Litter Size ◽  
Genetic Parameters ◽  
Genetic Evaluation ◽  
Simultaneous Estimation ◽  
Large White ◽  
Lean Meat ◽  
Absolute Value ◽  
Meat Content ◽  
Reproduction Traits ◽  
Daily Gain

Genetic parameters for total number of piglets born per litter, number of piglets weaned per litter, lean meat content, and average daily gain from birth till the end of the field test were estimated for Czech Large White (445 589 records) and Czech Landrace (149 057 records) pigs using a four-trait animal model. The following heritabilities were estimated (first number: Large White, second number: Landrace): 0.10 ± 0.004 and 0.09 ± 0.007 for total number born; 0.09 ± 0.005 and 0.07 ± 0.008 for number weaned; 0.39 ± 0.004 and 0.36 ± 0.009 for lean meat content; 0.21 ± 0.004 and 0.18 ± 0.006 for daily gain. The highest genetic correlation (approximately 0.85 in both breeds) was estimated between both litter size traits. In Czech Landrace, all remaining genetic correlations were < 0.20 in their absolute value. Negative correlations of approximately ‑0.25 were estimated in Czech Large White between daily gain and both reproduction traits. All remaining correlations in Czech Large White were also < 0.20 in their absolute value. The estimated non-zero correlations between production and reproduction traits are, besides of other arguments, one reason to recommend a joint genetic evaluation of production and reproduction traits. If more than one litter trait is included in the genetic evaluation, repeatability models should be used instead of separate treating the first and the second and subsequent litters; this is because of the high correlations among litter size traits which are expected to cause numerical problems if multi-parity models are used.  

scholarly journals Genetic parameters for a joint genetic evaluation of production and reproduction traits in pigs

2011 ◽  
Vol 50 (No. 3) ◽  
pp. 96-103 ◽  
Author(s):  
J. Wolf ◽  
E. Žáková ◽  
E. Groeneveld
Keyword(s):  
Genetic Parameters ◽  
Performance Test ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Covariance Structure ◽  
Live Weight ◽  
Genetic Evaluation ◽  
Large White ◽  
Reproduction Traits ◽  
Daily Gain

The covariance structure was estimated by REML for a joint genetic evaluation of production and reproduction traits for Czech Landrace (58 258 records) and Czech Large White (167 161 records) pigs using four-trait animal models. The following traits were analysed: lean mean percentage at the end of the performance test in the field, estimated from ultrasonic measurements unadjusted for live weight (LM), average daily gain in field test (in g/day) calculated as weight at the end of the test divided by age at the end of the test (ADG), number of piglets born alive in parity 1 (NBA1) and number of piglets born alive in parity 2 and subsequent parities (NBA2+). The heritabilities were in the range from 0.30 to 0.37 for LM, from 0.13 to 0.18 for ADG, from 0.09 to 0.13 for NBA1 and from 0.10 to 0.14 for NBA2+, depending on the breed and on the model (herd-year-season random or fixed). Genetic correlations between production and reproduction traits were estimated to be non-zero. Correlations between traits caused by the herd-year-season effect were mostly positive. As a general conclusion, the joint genetic evaluation of production and reproduction traits is recommended. The herd-year-season effect should be preferably considered as random.  

scholarly journals The visfatin (NAMPT; PBEF1) gene polymorphisms and associations with meat performance traits in three pig breeds kept in the Czech Republic

2009 ◽  
Vol 54 (No. 10) ◽  
pp. 443-447 ◽  
Author(s):  
J. Zrůstová ◽  
A. Knoll ◽  
T. Urban ◽  
S. Čepica
Keyword(s):  
Average Daily Gain ◽  
Backfat Thickness ◽  
Large White ◽  
Nicotinamide Phosphoribosyltransferase ◽  
The Czech Republic ◽  
Lean Meat ◽  
Meat Content ◽  
The Difference ◽  
Daily Gain

Visfatin encoded by the <I>NAMPT</I> gene <I>(nicotinamide phosphoribosyltransferase,</I> formerly also known as <I>PBEF – pre-B cell colony-enhancing factor</I>) is suggested to play a role in lipid metabolism and pathophysiology of diabetes mellitus type 2. A new microsatellite <I>SCZ004</I> was detected within intron 9 of the <I>NAMPT</I> gene. In Czech Large White (<I>n</I> = 95) frequencies of alleles <I>282, 286, 287, 299</I>, and <I>304</I> were 0.02, 0.39, 0.07, 0.04, and 0.48, respectively. Allele <I>286</I> was predominant also in Landrace (<I>n</I> = 11) and Black Pied Prestice (<I>n</I> = 11) breeds. Association analysis was carried out between previously reported SNP AM999341:g.669T>C in intron 9 of the <I>NAMPT</I> gene and backfat thickness, average daily gain and lean meat content in Czech Large White (<I>n</I> = 215), Black Pied Prestice (<I>n</I> = 96) and Landrace (<I>n</I> = 105). The <I>CC</I> genotype was associated with higher backfat thickness (<I ≤ 0.01) in Black Pied Prestice, however in Czech Large White <I>CC</I> was associated with lower backfat thickness when compared to <I>TT</I> and <I>CT</I> genotypes (<I ≤ 0.05). In Czech Large White, <I>CC</I> genotype was associated with higher lean meat content when compared to <I>CT</I> (not significant) and <I>TT</I> genotype (<I ≤ 0.05) while in Landrace <I>CC</I> had the lowest lean meat content when compared to <I>CT</I> and <I>TT</I> genotypes but only the difference between <I>CC</I> and <I>CT</I>T was statistically significant (<I ≤ 0.05). In Black Pied Prestice no association with lean meat content was found. Average daily gain was not associated with the SNP in any breed.

scholarly journals Effect of estrogen receptor, follicle stimulating hormone and myogenin genes on the performance of Large White sows

2008 ◽  
Vol 52 (No. 10) ◽  
pp. 334-340 ◽  
Author(s):  
P. Humpolíček ◽  
T. Urban ◽  
V. Matoušek ◽  
Z. Tvrdoň
Keyword(s):  
Estrogen Receptor ◽  
Litter Size ◽  
Growth Traits ◽  
Receptor Gene ◽  
Follicle Stimulating Hormone ◽  
Average Daily Gain ◽  
Large White ◽  
Meat Content ◽  
Reproduction Traits ◽  
Stimulating Hormone

The study was designed to determine the associations between the Estrogen Receptor Gene (<i>ESR - PvuII</i>), Follicle Stimulating Hormone Gene (<i>FSHB - HaeIII</i>) and Myogenin Gene (<i>MYOG - MspI</i>) with traits characterizing the sow efficiency comprehensively. Concretely, the age of the first conception (AFC), service period (SP), insemination interval (InI), total number of piglets born (TNB), number of piglets born alive (NBA), number of piglets weaned (NW), lean meat content (LMC), backfat thickness (BFT) and average daily gain (ADG) were included in the study. Significant effects of <i>ESR</i> and <i>FSHB</i> genes on litter size (particularly in the second parity) and on reproduction traits were found in the investigated population. The influence of <i>MYOG</i> gene on reproduction traits was observed but there was no effect of this gene on litter size. None of the included genes had an effect on growth traits. The results outline the possible application of the above-mentioned genes in selection of Large White sows.

scholarly journals Association analysis of seven candidate genes with performance traits in Czech Large White pigs

2011 ◽  
Vol 56 (No. 8) ◽  
pp. 337-344 ◽  
Author(s):  
F. Weisz ◽  
T. Urban ◽  
P. Chalupová ◽  
A. Knoll
Keyword(s):  
Average Daily Gain ◽  
Large White ◽  
Association Analyses ◽  
Lean Meat ◽  
Meat Content ◽  
Pcr Rflp ◽  
Performance Traits ◽  
Estimated Breeding Values ◽  
Study Association ◽  
Daily Gain

&nbsp;In this study association analyses were performed between genes tagged SNP (IGF2, NAMPT, DGAT1, MYF4, MC3R, MC4R and MYOD1), performance traits (backfat thickness, lean meat content, average daily gain from birth to the end of the test, average daily gain in test) and estimated breeding values (EBVs) in a population of Czech Large White sows (n = 101). Genotyping of all SNPs was performed by SNapShot with the exception of SNP within NAMPT gene for which HpaII PCR-RFLP assay was used. The following significant associations between genes tagged SNPs and traits or EBVs were found out: DGAT1 &ndash; lean meat content (AG &gt; AA, P &le; 0.05), MC4R &ndash; EBV for lean meat content (GG &gt; AA, P &le; 0.05; GG &gt; AG, P &le; 0.05), IGF2 &ndash; EBV for reproduction (piglets born alive in the second and subsequent parity) (AG &gt; AA, P &le; 0.05) and total EBV (AG &gt; AA, P &le; 0.01) and MC3R &ndash; EBV for average daily gain (CT &gt; TT, P &le; 0.05).

scholarly journals Association analysis of interleukin-18 gene with performance traits in Czech Large White pigs

2012 ◽  
Vol 60 (5) ◽  
pp. 97-102 ◽  
Author(s):  
Pavla Chalupová ◽  
T. Urban ◽  
A. Knoll
Keyword(s):  
Average Daily Gain ◽  
Backfat Thickness ◽  
Breeding Value ◽  
Interleukin 18 ◽  
Large White ◽  
Lean Meat ◽  
Meat Content ◽  
Pcr Rflp ◽  
Performance Traits ◽  
Daily Gain

This research focused on recently described MspI and VspI SNPs in interleukin-18 gene and their association with selected performance traits (backfat thickness; lean meat content, average daily gain from birth, average daily gain in test, breeding value for average daily gain, for lean meat content, for reproduction and total breeding value) in a population of 344 Czech Large White sows. Both SNPs were genotyped by PCR-RFLP. In this work, these polymorphisms were associated with backfat thickness and lean meat content. Animals with genotype AA (MspI SNP) had significantly (P < 0.05) lower backfat thickness and higher lean meat content (0.77 ± 0.02 and 62.16 ± 0.23, resp.) compared to GA (0.83 ± 0.02 and 61.40 ± 0.18, resp.). Animals with genotype AA (VspI SNP) had significantly (P < 0.05) lower lean meat content and higher backfat thickness (61.10 ± 0.36 and 0.85 ± 0.03, resp.) compared to GA (62.02 ± 0.16 and 0.77 ± 0.02, resp.). No association between IL-18 polymorphisms and other performance traits was found. Our study revealed that IL-18 could be candidate gene for backfat thickness and lean meat content in pigs.

scholarly journals Genetic parameters of production and reproduetive traits in on a farm tested Danish Large White and Landrace swine in Greece

2000 ◽  
Vol 43 (3) ◽  
pp. 287-298
Author(s):  
J. Bizelis ◽  
A. Kominakis ◽  
E. Rogdakis ◽  
F. Georgadopoulou
Keyword(s):  
Maximum Likelihood ◽  
Genetic Correlation ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Production Traits ◽  
Likelihood Methods ◽  
Large White ◽  
Reproduction Traits ◽  
Maximum Likelihood Methods ◽  
Genetic And Phenotypic Correlations

Abstract. Production and reproduetive traits in Danish Landrace (LD) and Large White (LW) swine were analysed by restricted maximum likelihood methods to obtain heritabilities as well as genetic and phenotypic correlations. Production traits were: age, backfat thickness (BT), muscle depth (MD) and the ratio BT/MD, adjusted to Standard bodyweight of 85 kg. Reproduction traits were: number of pigs born (NB) and number of pigs weaned (NW) per sow and parity. Heritabilities for age, BT, MD and BT/MD were 0.60, 0.44, 0.51 and 0.42 for LD and 0.36, 0.44, 0.37 and 0.45 for LW, respectively. Genetic correlations between age and BT were −0.22 in LD and – 0.44 in LW. The genetic correlation between age and MD was close to zero in both breeds. Genetic correlation between BT and MD were −0.36 and −0.25 in LD and LW, respectively. Heritabilities for NB were 0.25 in LD and 0.13 in LW while heritabilities for NW were close to zero in both breeds. Genetic correlation between NB and NW was 0.46 and 0.70 in LD and LW, respectively.

scholarly journals Porcine perilipin (PLIN) gene: Structure, polymorphism and association study in Large White pigs

2009 ◽  
Vol 54 (No. 8) ◽  
pp. 359-364 ◽  
Author(s):  
Z. Vykoukalová ◽  
A. Knoll ◽  
S. Čepica
Keyword(s):  
Linkage Disequilibrium ◽  
Amino Acid ◽  
Association Study ◽  
Gene Structure ◽  
Average Daily Gain ◽  
Large White ◽  
Meat Content ◽  
Significant Difference ◽  
Daily Gain ◽  
I Gene

Perilipin, encoded by the <I>PLIN</I> gene, is a lipid droplet-associated phosphoprotein that functions as a key regulator of triacylglycerol storage and hydrolysis in adipocytes. In this study, structure and variability of the porcine <I>PLIN</I> gene were characterised. PCR fragments encompassing exons 1 to 9 and interspersed introns were sequenced and the obtained sequence was deposited in EMBL/GenBank/DDBJ databases (AM931171). Seven silent polymorphisms and one nonsynonymous polymorphism were detected in the coding sequence. The nonsynonymous polymorphism g.627G>A causing an amino acid substitution p.Val3Ile was found only in Meishan and Meishan × Piétrain cross. Associations were studied between loci g.4119A>G and g.7966T>C, and average daily gain (ADG), backfat thickness (BFT) or lean meat content (LMC) in 166 gilts from two herds. Due to supposed complete linkage disequilibrium between loci g.4119A>G and g.7966T>C only genotype combinations <I>AA-TT, AG-TC</I> and <I>GG-CC</I> were detected. A significant difference (<I>P</I> = 0.0290) between <I>GG-CC</I> and <I>AG-TC</I> genotype combinations for BFT in herd 2 and a suggestive difference (<I>P</I> = 0.0516) between <I>GG-CC</I> and <I>AA-TT</I> genotypes for ADG in herd 1 were detected.

Additive and heterotic breed effects in the genetic evaluation of pig sire breeds

2006 ◽  
Vol 82 (4) ◽  
pp. 455-462 ◽  
Author(s):  
J. Wolf ◽  
D. Peškovičová ◽  
E. Žáková ◽  
E. Groeneveld
Keyword(s):  
Average Daily Gain ◽  
Field Performance ◽  
Breeding Value ◽  
Data Sets ◽  
Large White ◽  
Data Set ◽  
Meat Content ◽  
Value Estimation ◽  
A Minor ◽  
Daily Gain

AbstractThe data sets consisted of field performance data from 54 848 purebred and 16 175 crossbred animals (Czech data set, CZ) and 16 610 purebred and 9 228 crossbred animals (Slovak data set, SK). Animals from the following breeds were included: Duroc, Hampshire, Piétrain, sire line of Large White (CZ) or Yorkshire (SK), Czech Meat pig (CZ) or Slovak Meat pig (SK), Belgian Landrace (SK). Two-trait animal models were calculated for average daily gain from birth to the end of the field test (ADG) and lean meat content (LM, only in CZ) or backfat thickness (BF, only in SK). The models included additive breed and breed heterotic effects. Piétrain was the breed with the highest LM and the lowest BF. The additive genetic breed effect was about 1·5% LM (CZ) in comparison with Large White or −0·4 mm BF (SK) in comparison to Yorkshire. The sire line of Large White (CZ) or the Yorkshire breed (SK) clearly exceeded all the remaining sire breeds in ADG (on average by 30 to 50 g/day). There was a clear tendency to negative heterosis in LM in all crossbred combinations (CZ). In BF, heterotic effects between −0·2 mm and +0·3 mm were estimated, mostly not being significant (SK). The estimates of the heterotic effects for ADG were positive throughout. Higher values up to 40 g/day (7%) were observed in the Czech data set. Though heterotic breed effects are of some importance especially for ADG, their inclusion in the equations for breeding value estimation will have only a minor impact on the predicted breeding values.

The genetic foundation of fitness and reproduction traits in Australian pig populations. 2. Relationships between weaning to conception interval, farrowing interval, stayability, and other common reproduction and production traits.

1996 ◽  
Vol 47 (8) ◽  
pp. 1275 ◽  
Author(s):  
E Tholen ◽  
KL Bunter ◽  
S Hermesch ◽  
HU Graser
Keyword(s):  
Genetic Parameters ◽  
Performance Test ◽  
Genetic Relationships ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Data Sets ◽  
Production Traits ◽  
Breeding Programs ◽  
Reproduction Traits ◽  
Daily Gain

Data sets from 2 large Australian piggeries were used to estimate genetic parameters for the traits weaning to conception interval (WCIi-l,i) and farrowing interval (FIi-l,i), number born alive (NBAI), average piglet birthweight (BWi), 21-day litter weight (W21i), and sow stayability (STAYli) recorded for each ith parity, as well as sow average daily gain (ADG) and backfat (BF) recorded at the end of performance test. Over parities and herds, heritabilities for each trait were in the ranges: WCI/FI, 0.0-0.10; NBA, 0.09-0.16; BW, 0.11-0.35; W21, 0.12-0.23; STAYli, 0.02-0.09; ADG, 0.35-0.37; BF, 0.36-0.45. Genetic correlations between NBAl and NBA from later parities were significantly different from 1. In addition, in 1 herd negative genetic correlations (rg = -0.04 to -0.25) were found between sow stayability traits and NBA1, but not NBA recorded in later parities. Stayability was Unfavourably correlated with ADG and BF, and favourably correlated with WCI12. However, WCI12 was unfavourably correlated genetically with BF (rg = -0.24) but uncorrelated with ADG. Antagonistic relationships also existed between NBA and BW, NBA and W21, and BW and STAY. In addition to the traditional traits currently included in pig-breeding programs (e.g. ADG, BF, and NBA), traits such as WCI, BW, and STAY should also be considered as selection criteria to minimise the detrimental effects of antagonistic genetic relationships between traits.

scholarly journals Porcine prolactin receptor genotypes and production and reproduction traits in Hungarian Large White and Landrace sows (Brief Report)

2010 ◽  
Vol 53 (4) ◽  
pp. 497-499
Author(s):  
K. Kovacs ◽  
L. Fesus ◽  
A. Zsolnai ◽  
A. Nyiri ◽  
I. Anton
Keyword(s):  
Litter Size ◽  
Receptor Gene ◽  
Mammalian Species ◽  
Prolactin Receptor ◽  
Reproductive Traits ◽  
Pituitary Hormone ◽  
Chromosome 16 ◽  
Large White ◽  
Anterior Pituitary Hormone ◽  
Reproduction Traits

Abstract. Prolactin is an anterior pituitary hormone involved in many endocrine activities and plays and essential role in reproduction. Its receptor (PRLR) was detected in various tissues including brain, ovary, placenta, an uterus in several mammalian species (BOLE-FEYSOT et al. 1998). Reproductive performance of sows is a crutial point in pig production with significant economic importance and may be estimated with the help of markers. Porcine prolactin receptor gene is said to be a candidate genetic marker for reproductive traits. It has been mapped to porcine chromosome 16 (Vincent et al. 1997). There is a C/G SNP in PRLR gene (KMIEC et al. 2001) at the position of 203 (GAN: U96306) which eliminates an AluI cleavage site. The effect of this polymorphism on litter size in various breeds has been estimated (VINCENT et al. 1998, ROTHSCHILD et al. 1998, VAN RENS et al. 2002, KMIEC and TERMAN, 2004, DRÖGEMÜLLER et al. 2001, KORWIN-KOSSAKOWSKA et al. 2003). The influence of the bovine hormone variant was also estimated (RATNA-KUMARI et al. 2008). The aim of the study was to estimate PRLR AluI polymorphism effects on litter size in Hungarian Large White (HLW) and Hungarian Landrace (HL) breeds.

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