scholarly journals Meat production from entire male pigs: Performance, meat quality and alternatives to boar taint

1988 ◽  
Vol 37 (3) ◽  
pp. 203-203 ◽  
Author(s):  
M. BONNEAU
Keyword(s):  
Meat Quality ◽  
Boar Taint ◽  
Meat Production ◽  
Entire Male

scholarly journals Effect of feeding fermentable fibre-rich feedstuffs on meat quality with emphasis on chemical and sensory boar taint in entire male and female pigs

Meat Science ◽  
2008 ◽  
Vol 80 (4) ◽  
pp. 1165-1173 ◽  
Author(s):  
Laurits Lydehøj Hansen ◽  
Sandra Stolzenbach ◽  
Jens Askov Jensen ◽  
Poul Henckel ◽  
Jens Hansen-Møller ◽  
...  
Keyword(s):  
Meat Quality ◽  
Boar Taint ◽  
Male And Female ◽  
Effect Of Feeding ◽  
Entire Male

scholarly journals Characterisation of 3-beta-hydroxysteroid dehydrogenase from pig liver and testis in relation to boar taint

2005 ◽  
Vol 2005 ◽  
pp. 106-106
Author(s):  
S. I. Nicolau-Solano ◽  
F. M. Whittington ◽  
J. D. Wood ◽  
E. Doran
Keyword(s):  
Adipose Tissue ◽  
Meat Quality ◽  
Hydroxysteroid Dehydrogenase ◽  
Boar Taint ◽  
Pig Liver ◽  
Entire Male ◽  
Low Rate ◽  
Excessive Accumulation

Boar taint is a major meat quality defect, which affects about 10% of entire male pigs. It is due to an excessive accumulation of skatole and androstenone in adipose tissue. One of the reasons for accumulation of these compounds is a low rate of their metabolism. Androstenone is metabolised in liver via the enzyme 3-beta-hydroxysteroid dehydrogenase (HSD). This enzyme is well characterised in the testis, where it participates in the synthesis of steroids, while its properties in liver are unknown. The aim of the present study was to characterise and compare properties of HSD from pig liver versus pig testis when metabolising androstenone.

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.

scholarly journals Pros and Cons of Alternatives to Piglet Castration: Welfare, Boar Taint, and Other Meat Quality Traits

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 884 ◽  
Author(s):  
Bonneau ◽  
Weiler
Keyword(s):  
Meat Quality ◽  
Feed Efficiency ◽  
Production Systems ◽  
Fat Content ◽  
Boar Taint ◽  
Carcass Quality ◽  
Pros And Cons ◽  
Feed Costs ◽  
The Cost ◽  
Entire Male

This paper reviews the pros and cons of various alternatives to the surgical castration of male piglets without pain relief. Castration is mostly motivated by the presence of boar taint in the meat from some entire male pigs. It results in pain during surgery and markedly increases feed costs and the fat content of the carcass. Raising entire male pigs avoids pain at castration, but animals can suffer from increased stress during the finishing period because of aggressive and mounting behavior. Feed efficiency and carcass quality are much better than in surgical castrates. The quality of meat from entire male pigs is lower because of boar taint, a reduced intramuscular fat content, and increased unsaturation of the fat. Immunocastration prevents boar taint, pain associated with surgery, and stress related to aggressive and mounting behavior. Feed efficiency and carcass quality are intermediate between surgical castrates and entire males. Meat quality is similar to surgical castrates. Anesthesia alone prevents pain during surgery, but not after, while analgesia alone mitigates pain after surgery, but not during it. With the currently available methods, the cost of combined anesthesia and analgesia is too high for conventional production systems in most countries.

scholarly journals Performances, meat quality and boar taint of castrates and entire male pigs fed a standard and a raw potato starch-enriched diet

animal ◽  
2008 ◽  
Vol 2 (11) ◽  
pp. 1707-1715 ◽  
Author(s):  
C. Pauly ◽  
P. Spring ◽  
J.V. O’Doherty ◽  
S. Ampuero Kragten ◽  
G. Bee
Keyword(s):  
Meat Quality ◽  
Potato Starch ◽  
Boar Taint ◽  
Entire Male

scholarly journals Key Genes Regulating Skeletal Muscle Development and Growth in Farm Animals

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 835
Author(s):  
Mohammadreza Mohammadabadi ◽  
Farhad Bordbar ◽  
Just Jensen ◽  
Min Du ◽  
Wei Guo
Keyword(s):  
Skeletal Muscle ◽  
Candidate Genes ◽  
Meat Quality ◽  
Muscle Development ◽  
Muscle Growth ◽  
Farm Animals ◽  
Meat Production ◽  
Skeletal Muscle Development ◽  
Extrinsic Factors ◽  
Myogenic Regulatory Factor

Farm-animal species play crucial roles in satisfying demands for meat on a global scale, and they are genetically being developed to enhance the efficiency of meat production. In particular, one of the important breeders’ aims is to increase skeletal muscle growth in farm animals. The enhancement of muscle development and growth is crucial to meet consumers’ demands regarding meat quality. Fetal skeletal muscle development involves myogenesis (with myoblast proliferation, differentiation, and fusion), fibrogenesis, and adipogenesis. Typically, myogenesis is regulated by a convoluted network of intrinsic and extrinsic factors monitored by myogenic regulatory factor genes in two or three phases, as well as genes that code for kinases. Marker-assisted selection relies on candidate genes related positively or negatively to muscle development and can be a strong supplement to classical selection strategies in farm animals. This comprehensive review covers important (candidate) genes that regulate muscle development and growth in farm animals (cattle, sheep, chicken, and pig). The identification of these genes is an important step toward the goal of increasing meat yields and improves meat quality.

A comparison of Nellore and Nellore-cross entire male cattle finished in a feedlot in a tropical area of Brazil with respect to carcass characteristics and meat quality after ageing either with or without 60days of prior frozen storage

2021 ◽  
Author(s):  
Júlia Dias do Nascimento ◽  
Marcus Vinicius Morais de Oliveira ◽  
Marina de Nadai Bonin ◽  
Pollyanna Ricartes de Oliveira de Oliveira ◽  
Luis Carlos Vinhas Ítavo ◽  
...  
Keyword(s):  
Meat Quality ◽  
Frozen Storage ◽  
Carcass Characteristics ◽  
Tropical Area ◽  
Entire Male

PSX-A-27 Late-Breaking: The sulfatase mediated regeneration of androstenone from androstenone sulfate in boar fat

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 376-376
Author(s):  
Christine Bone ◽  
E James Squires
Keyword(s):  
Leydig Cells ◽  
High Performance ◽  
Boar Taint ◽  
Pork Products ◽  
Significant Difference ◽  
Sulfatase Activity ◽  
Steroid Sulfate ◽  
Student’S T ◽  
Entire Male ◽  
Student’S T Test

Abstract Boar taint is an off-odour or off-flavour that develops in heated pork products from entire male pigs, which is caused by the accumulation of androstenone, a sex pheromone, in the fat. However, we have previously demonstrated that a significant amount of androstenone undergoes sulfoconjugation upon synthesis in the Leydig cells and circulates in the plasma primarily as a polar steroid sulfate. Therefore, the purpose of this study was to determine if androstenone sulfate can be deconjugated within the adipose tissue by the sulfatase enzyme to return free androstenone and indirectly contribute to the development of boar taint. Backfat was obtained from 6-month-old terminal cross [Duroc x (Landrace x Yorkshire)] boars that had high (n=4) or low (n=4) sulfatase expression as determined by RT-PCR. Sulfatase activity in the fat was measured by quantifying the conversion of androstenone sulfate to free androstenone. Backfat was homogenized and the supernatant was incubated with [3H]-androstenone sulfate for 24-hours. Androstenone was extracted from the incubation using ether and steroid conversion was quantified using high-performance liquid chromatography (HPLC). Additionally, fat androstenone concentrations were quantified using an established HPLC procedure. Statistical analysis was conducted using a Student’s t-test. There was a significant difference (p=0.04) in the expression of sulfatase between the high (2.99 ± 0.67) and low (1.21 ± 0.19) sulfatase boars and the percentage of androstenone sulfate that was converted to free androstenone was proportional to the expression of sulfatase. Interestingly, the expression of sulfatase was positively related to the concentration of androstenone in the fat in boars with high sulfatase expression; however, this relation was not as strong in animals with low sulfatase expression. These preliminary results suggest that the development of boar taint may occur indirectly through the deconjugation of androstenone sulfate in boars with high expression of sulfatase in the fat.

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