scholarly journals Genetic relationships between measures of sexual development, boar taint, health, and aggressiveness in pigs1

2015 ◽  
Vol 93 (8) ◽  
pp. 3749-3758 ◽  
Author(s):  
S. P. Parois ◽  
A. Prunier ◽  
M. J. Mercat ◽  
E. Merlot ◽  
C. Larzul
Keyword(s):  
Sexual Development ◽  
Genetic Relationships ◽  
Boar Taint

scholarly journals Endocrine Fertility Parameters—Genomic Background and Their Genetic Relationship to Boar Taint in German Landrace and Large White

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 231
Author(s):  
Ines Brinke ◽  
Christine Große-Brinkhaus ◽  
Katharina Roth ◽  
Maren Julia Pröll-Cornelissen ◽  
Sebastian Klein ◽  
...  
Keyword(s):  
Genetic Relatedness ◽  
Genetic Relationships ◽  
Young Male ◽  
Boar Taint ◽  
Genetic Progress ◽  
Large White ◽  
Genome Wide ◽  
A Genome ◽  
Different Origins ◽  
Fertility Traits

The surgical castration of young male piglets without anesthesia is no longer allowed in Germany from 2021. One alternative is breeding against boar taint, but shared synthesis pathways of androstenone (AND) and several endocrine fertility parameters (EFP) indicate a risk of decreasing fertility. The objective of this study was to investigate the genetic background between AND, skatole (SKA), and six EFP in purebred Landrace (LR) and Large White (LW) populations. The animals were clustered according to their genetic relatedness because of their different origins. Estimated heritabilities (h2) of AND and SKA ranged between 0.52 and 0.34 in LR and LW. For EFP, h2 differed between the breeds except for follicle-stimulating hormone (FSH) (h2: 0.28–0.37). Both of the breeds showed unfavorable relationships between AND and testosterone, 17-β estradiol, and FSH. The genetic relationships (rg) between SKA and EFP differed between the breeds. A genome-wide association analysis revealed 48 significant associations and confirmed a region for SKA on Sus Scrofa chromosome (SSC) 14. For EFP, the results differed between the clusters. In conclusion, rg partly confirmed physiologically expected antagonisms between AND and EFP. Particular attention should be spent on fertility traits that are based on EFP when breeding against boar taint to balance the genetic progress in both of the trait complexes.

Revealing genetic relationships between compounds affecting boar taint and reproduction in pigs1

2011 ◽  
Vol 89 (3) ◽  
pp. 680-692 ◽  
Author(s):  
E. Grindflek ◽  
T. H. E. Meuwissen ◽  
T. Aasmundstad ◽  
H. Hamland ◽  
M. H. S. Hansen ◽  
...  
Keyword(s):  
Genetic Relationships ◽  
Boar Taint

1733 Sexual development and boar taint in male pigs selected for divergent residual feed intake

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 844-844
Author(s):  
A. Prunier ◽  
S. Parois ◽  
N. Le Floc'h ◽  
H. Gilbert
Keyword(s):  
Feed Intake ◽  
Sexual Development ◽  
Residual Feed Intake ◽  
Boar Taint

scholarly journals Genomic background and genetic relationships between boar taint and fertility traits in German Landrace and Large White

BMC Genetics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Ines Brinke ◽  
Christine Große-Brinkhaus ◽  
Katharina Roth ◽  
Maren J. Pröll-Cornelissen ◽  
Hubert Henne ◽  
...  
Keyword(s):  
Genetic Relationships ◽  
Boar Taint ◽  
Large White ◽  
Fertility Traits

scholarly journals How to Improve Meat Quality and Welfare in Entire Male Pigs by Genetics

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 699
Author(s):  
Catherine Larzul
Keyword(s):  
Meat Quality ◽  
Sexual Development ◽  
Genomic Data ◽  
Boar Taint ◽  
New Developments ◽  
Set Up ◽  
Near Future ◽  
Entire Male ◽  
Selection Of

Giving up surgical castration is desirable to avoid pain during surgery but breeding entire males raises issues on meat quality, particularly on boar taint, and aggression. It has been known for decades that boar taint is directly related to sexual development in uncastrated male pigs. The proportion of tainted carcasses depends on many factors, including genetics. The selection of lines with a low risk of developing boar taint should be considered as the most desirable solution in the medium to long term. It has been evidenced that selection against boar taint is feasible, and has been set up in a balanced way in some pig populations to counterbalance potential unfavorable effects on reproductive performances. Selection against aggressive behaviors, though theoretically feasible, faces phenotyping challenges that compromise selection in practice. In the near future, new developments in modelization, automatic recording, and genomic data will help define breeding objectives to solve entire male meat quality and welfare issues.

Parenting and Adolescents’ Sexual Development in Western Societies

2011 ◽  
Vol 16 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Hanneke de Graaf ◽  
Ine Vanwesenbeeck ◽  
Liesbeth Woertman ◽  
Wim Meeus
Keyword(s):  
Sexual Behavior ◽  
Parenting Styles ◽  
Sexual Development ◽  
Parental Support ◽  
Empirical Studies ◽  
Sexual Practices ◽  
Psychosexual Development ◽  
First Sexual Intercourse ◽  
Parenting Influences ◽  
Reciprocal Associations

This review examines associations between parenting styles and the psychosexual development of adolescents. Methods and results of empirical studies of associations between parental support, control, and knowledge and the sexual behavior and sexual health of adolescents are described and evaluated. The results show that, in general, higher scores on support, control, and knowledge relate to a delay of first sexual intercourse, safer sexual practices, and higher sexual competence. Despite the vast amount of literature on this subject, the majority of these studies focus on single dimensions of parenting and unidirectional parenting influences. This review generates hypotheses regarding interactions of different parenting styles and reciprocal associations between parents and their children. There is a need for more dynamic, dialectical studies of parenting, and children’s sexual development.

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