scholarly journals Combined Analyses of Data From Quantitative Trait Loci Mapping Studies: Chromosome 4 Effects on Porcine Growth and Fatness

Genetics ◽  
2000 ◽  
Vol 155 (3) ◽  
pp. 1369-1378 ◽  
Author(s):  
Grant A Walling ◽  
Peter M Visscher ◽  
Leif Andersson ◽  
Max F Rothschild ◽  
Lizhen Wang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Wild Boar ◽  
Population Data ◽  
Study Data ◽  
Joint Analysis ◽  
Chromosome 4 ◽  
European Wild Boar ◽  
Mapping Populations ◽  
Combined Data

Abstract For many species several similar QTL mapping populations have been produced and analyzed independently. Joint analysis of such data could be used to increase power to detect QTL and evaluate population differences. In this study, data were collated on almost 3000 pigs from seven different F2 crosses between Western commercial breeds and either the European wild boar or the Chinese Meishan breed. Genotypes were available for 31 markers on chromosome 4 (on average 8.3 markers per population). Data from three traits common to all populations (birth weight, mean backfat depth at slaughter or end of test, and growth rate from birth to slaughter or end of test) were analyzed for individual populations and jointly. A QTL influencing birth weight was detected in one individual population and in the combined data, with no significant interaction of the QTL effect with population. A QTL affecting backfat that had a significantly greater effect in wild boar than in Meishan crosses was detected. Some evidence for a QTL affecting growth rate was detected in all populations, with no significant differences between populations. This study is the largest F2 QTL analysis achieved in a livestock species and demonstrates the potential of joint analysis.

Mapping genes for growth and fatness in pigs with data from international studies

1999 ◽  
Vol 1999 ◽  
pp. 45-45
Author(s):  
G.A. Walling ◽  
P.M. Visscher ◽  
L. Andersson ◽  
M.F. Rothschild ◽  
G. Moser ◽  
...  
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Genetic Markers ◽  
Quantitative Traits ◽  
Joint Analysis ◽  
International Studies ◽  
Chromosome 4 ◽  
Considerable Potential ◽  
Additional Information ◽  
German Data

The use of genetic markers to identify regions of the genome associated with variation in quantitative traits (QTL) is now widespread. Several studies have attempted to find QTLs for growth and fatness in pigs. Since the first published study (Andersson et al., 1994) many groups have found effects on chromosome 4, albeit with different breeds. In theory, joint analysis offers considerable potential to extract additional information from the data. This study aims to investigate the benefits and drawbacks of joint analysis.Data on birth weight (BWT), growth rate to end of test or slaughter (GRE) and average backfat depth (BF) were supplied from seven different pig populations in six countries. The data from Scotland, France, USA, Netherlands and half of the data from Germany were Meishan (MS) x commercial F2 populations. Data from Sweden and the remaining German data were from wild boar (WB) x commercial F2 populations. A total of 31 different markers were used, all on chromosome 4.

scholarly journals Multiple Marker Mapping of Quantitative Trait Loci in a Cross Between Outbred Wild Boar and Large White Pigs

Genetics ◽  
1998 ◽  
Vol 149 (2) ◽  
pp. 1069-1080 ◽  
Author(s):  
Sara A Knott ◽  
Lena Marklund ◽  
Chris S Haley ◽  
Kjell Andersson ◽  
William Davies ◽  
...  
Keyword(s):  
Growth Rate ◽  
Wild Boar ◽  
Quantitative Trait ◽  
Early Growth ◽  
Abdominal Fat ◽  
Chromosome 4 ◽  
Trait Variation ◽  
Large White ◽  
Intestinal Length ◽  
Trait Locus

Abstract A quantitative trait locus (QTL) analysis of growth and fatness data from a three generation pig experiment is presented. The population of 199 F2 animals was derived from a cross between wild boar and Large White pigs. Animals were typed for 240 markers spanning 23 Morgans of 18 autosomes and the X chromosome. A series of analyses are presented within a least squares framework. First, these identify chromosomes containing loci controlling trait variation and subsequently attempt to map QTLs to locations within chromosomes. This population gives evidence for a large QTL affecting back fat and another for abdominal fat segregating on chromosome 4. The best locations for these QTLs are within 4 cM of each other and, hence, this is likely to be a single QTL affecting both traits. The allele inherited from the wild boar causes an increase in fat deposition. A QTL for intestinal length was also located in the same region on chromosome 4 and could be the same QTL with pleiotropic effects. Significant effects, owing to multiple QTLs, for intestinal length were identified on chromosomes 3 and 5. A single QTL affecting growth rate to 30 kg was located on chromosome 13 such that the Large White allele increased early growth rate, another QTL on chromosome 10 affected growth rate from 30 to 70 kg and another on chromosome 4 affected growth rate to 70 kg.

scholarly journals A serosurvey for selected pathogens in Greek European wild boar

2015 ◽  
Vol 2 (2) ◽  
pp. e000077 ◽  
Author(s):  
A. Touloudi ◽  
G. Valiakos ◽  
L. V. Athanasiou ◽  
P. Birtsas ◽  
A. Giannakopoulos ◽  
...  
Keyword(s):  
Wild Boar ◽  
European Wild Boar

Gestation length, birth weight and growth rates of pure-bred indigenous goats and their crosses in Kenya

1988 ◽  
Vol 111 (2) ◽  
pp. 363-368 ◽  
Author(s):  
F. Ruvuna ◽  
T. C. Cartwright ◽  
H. Blackburn ◽  
M. Okeyo ◽  
S. Chema
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Statistical Analysis ◽  
Least Squares ◽  
Growth Rates ◽  
Gestation Length ◽  
East African ◽  
Factors Affecting ◽  
Cross Breeding ◽  
Indigenous Goats

SummaryData on gestation period of 701 indigenous East African and Galla does and pre- and postweaning growth of 810 pure-bred and cross-bred kids were analysed by least squares statistical analysis. Breeds of kids were East African, Galla, Toggenburg × East African, Toggenburg × Galla, Anglo-Nubian × East African and Anglo-Nubian × Galla. Average gestation length was 149 days and was significantly (P < 0·05) affected by type of birth of the kid, year–month of kidding, and age of dam. Does carrying twins had shorter gestation length than does carrying singles. Sex and breed of kid did not have significant effect on gestation length.Significant (P < 0·05) factors affecting birth weight, weight at 30, 60, 90, 120, 150, 210 and 270 days of age, and preweaning growth rate were breed and sex of kid, type of birth, year–month and age of dam. Male kids grew faster and were heavier than females. Kids born single were heavier and grew faster than twin-born kids. Kids from dams less than 3 years old weighed less than kids from older dams. Cross-bred kids had higher preweaning growth rates than indigenous pure-bred kids. The Anglo-Nubian × Galla cross was heaviest while the East African ranked lowest. The results point to importance of cross-breeding with temperate breeds to increase growth rates of indigenous goats. Comparison of Toggenburg and Anglo-Nubian sires for cross-breeding showed both buck breeds produced kids with roughly equal growth rates. Evaluation of indigenous Galla and East African dams for cross-breeding showed Galla dams produced heavier kids than East African but preweaning growth rates were not significantly different.

The performance of pregnant and lactating Merino ewes and their lambs fed survival rations of wheat grain and sawdust

1978 ◽  
Vol 18 (90) ◽  
pp. 34 ◽  
Author(s):  
RA Hunter
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Survival Rate ◽  
Wheat Grain ◽  
Term Survival ◽  
Feeding Level ◽  
Wool Growth ◽  
Eucalyptus Maculata ◽  
Maintenance Ration

Merino ewes were mated at pasture and then fed in pens either a maintenance or an 80 per cent maintenance ration of wheat grain three times a week. Half the animals at each feeding level were offered Spotted Gum (Eucalyptus maculata) sawdust. Addition of sawdust to the ration did not affect liveweight change and the wool growth rate of ewes or the birth weight and growth rate of lambs. It did, however, affect the long-term survival rate of ewes. Of the ewes that died after three months of survival feeding, four were in groups fed wheat alone and one in a group fed sawdust with the wheat. The survival rate and growth rate of lambs in all treatments were poor.

The effect of carcass weight on chemical characteristics and fatty acid composition of Longissimus dorsi and Semimembranosus muscles of European wild boar (Sus scrofa scrofa) meat

2018 ◽  
Vol 98 (3) ◽  
pp. 557-564
Author(s):  
Martyna Batorska ◽  
Justyna Więcek ◽  
Małgorzata Kunowska-Slósarz ◽  
Kamila Puppel ◽  
Jan Slósarz ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Wild Boar ◽  
Sus Scrofa ◽  
Carcass Weight ◽  
Longissimus Dorsi ◽  
Chemical Characteristics ◽  
Wild Boars ◽  
European Wild Boar

The objective of this study was to investigate the effect of carcass weight on chemical characteristics and fatty acid composition of m. longissimus dorsi and m. semimembranosus of European wild boar (Sus scrofa scrofa) meat. The research was carried out on 50 wild boars shot during four battues at hunting reserves in the central part of Poland. The carcasses were divided into three groups: ≤30 kg (G1), 31–45 kg (G2), and >45 kg (G3). The protein concentration increased with carcass weight (P ≤ 0.01). The concentration of saturated fatty acids was influenced by carcass weight and was higher when weight increased. A significantly higher level of monounsaturated fatty acids (MUFA) was found in the carcasses of wild boars from G3 compared with G1 group (P ≤ 0.01). The content of C18:2n-6 was significantly lower in the lightest carcasses compared with the heaviest (P ≤ 0.05). Statistical analysis confirmed that carcasses weight significantly affected polyunsaturated fatty acids (PUFA) n-3 content. The lightest carcasses contained a significantly higher concentration of PUFA n-3 (P ≤ 0.01). In addition, in G3, the amount of C22:5n-3 was two-fold lower (P ≤ 0.01) than in G1. The research has shown that the meat quality was affected by the carcass weight, resulting better parameters in the lighter than in the heavier carcasses. Therefore, most of the culled wild boars should be squeakers and young boars after the first year of life.

scholarly journals The Effects of Debt To Equity Ratio, Cash Ratio, Return on Assets, Growth Rate and Institutional Ownership Toward Dividend Policy at The Companies

2019 ◽  
Vol 1 (4) ◽  
Author(s):  
I Gusti Agung Prama Yoga ◽  
Desak Rurik Pradnya Paramitha Nida ◽  
I Gusti Agung Krisna Pramadhi
Keyword(s):  
Growth Rate ◽  
Financial Management ◽  
Dividend Policy ◽  
Stock Exchange ◽  
Secondary Data ◽  
Institutional Ownership ◽  
Study Data ◽  
Return On Assets ◽  
Logistic Regression Models ◽  
Equity Ratio

A company founded is of three objectives, that is to say, to obtain maximum profit, to prosper the owner of the company, and to maximize the value of the company. The purpose of financial management itself is to help the achievement of the company goals. However, sometimes there is a conflict of interests between the owner and management which is called an agency problem that can be reduced with various mechanisms, one of which is the dividend policy. The present study examined what effects the debt to equity ratio, cash ratio, and return on assets, growth rate, and institutional ownership would have on the dividend policy of companies listed on the Indonesia Stock Exchange in 2013-2017. Being familiar with the effect of debt to equity ratio, cash ratio, and return on assets, growth rates and institutional ownership on dividend policy of companies listed on the Indonesia Stock Exchange in 2013-2017 is the aim of this study. The type of data used is entirely secondary data that was quantitative. Documentation is the method used in gathering data on this study. Data were analyzed using logistic regression models. Based on the analysis, it can be concluded that Return on Assets has a positive effect on dividend policy of companies listed on the Indonesia Stock Exchange in 2013-2017, while Debt to Equity Ratio, Cash Ratio, growth rate, and institutional ownership have no effect on the company's dividend policy in 2013-2017.

Genetic detection and analysis of porcine bocavirus type 1 (PoBoV1) in European wild boar (Sus scrofa)

Virus Genes ◽  
2011 ◽  
Vol 43 (3) ◽  
pp. 376-379 ◽  
Author(s):  
Dániel Cadar ◽  
Attila Cságola ◽  
Márta Lőrincz ◽  
Kata Tombácz ◽  
Timea Kiss ◽  
...  
Keyword(s):  
Wild Boar ◽  
Sus Scrofa ◽  
Porcine Bocavirus ◽  
European Wild Boar ◽  
Genetic Detection

Seasonal changes of steroid concentrations in seminal plasma of a European wild boar

1984 ◽  
Vol 107 (3) ◽  
pp. 425-427 ◽  
Author(s):  
D. Schopper ◽  
J. Gaus ◽  
R. Claus ◽  
H. Bader
Keyword(s):  
Wild Boar ◽  
Seminal Plasma ◽  
Seasonal Pattern ◽  
Plasma Concentrations ◽  
Boar Taint ◽  
Steroid Production ◽  
European Wild Boar ◽  
Clear Seasonal Pattern ◽  
Boar Semen ◽  
Low Levels

Abstract. The influence of season on testicular steroid production as a parameter of testicular function has been studied in a wild boar. Semen was collected once weekly while it served the dummy. In seminal plasma concentrations of the following steroids were determined by radioimmunoassay: unconjugated testosterone, conjugated testosterone, unconjugated total oestrogens, conjugated total oestrogens and 5α-androst-16-en-3-one ('boar-taint steroid'). All steroids showed a clear seasonal pattern with highest concentrations in autumn and early winter and low levels from January to July. Maxima during the rutting season were 10–25 times greater than average values out of season. During a 2-month-period (mid-July until mid-September) libido was abolished and the wild boar refused to mount the dummy. These results indicate that the seasonal variation in testicular steroid production by the wild boar, regulated by photoperiod, are similar to those of the domestic boar.

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