Performance, pork quality and fatty acid composition of entire males, surgically castrated or immunocastrated males, and female pigs reared under organic system

Grela, Eugeniusz R.; Kowalczuk-Vasilev, Edyta; Klebaniuk, Renata

doi:10.2478/pjvs-2013-0015

Cited by 25 publications

(23 citation statements)

References 20 publications

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“…Differences between the TBARS content in sows and entire males in this study correlated with the differences in the FFA content. Grela et al (2013) did not find differences between entire males, surgically castrated or immunocastrated pigs, and sows. The mean content of TBARS they found was 0.35-0.37 mg MDA·kg -1 of meat, which was lower than in our study (0.52-0.63 mg MDA·kg -1 ).…”

Section: Content Of Tbarscontrasting

confidence: 52%

“…Low antioxidant levels (vitamin E) in pig tissues containing high PUFA concentrations are due to the utilization of the antioxidant to control oxidation (Kouba et al 2003). The fat of surgically castrated pigs (both intramuscular and back fat) showed the lowest content of PUFA (pro-oxidant) in comparison with entire males, immunocastrated males and gilts (Grela et al 2013). Proportions of pro-oxidant represented by PUFA tend to be high in subcutaneous adipose tissue from entire males due to lesser tissue maturation.…”

Section: Antioxidant Capacitymentioning

confidence: 99%

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Comparison of oxidation status and antioxidant capacity of meat from surgically castrated and immunocastrated pigs, entire males and sows

et al. 2019

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The aim of the present study was to evaluate the influence of castration (surgical and immunological) and sex on lipid hydrolysis, oxidation and antioxidant capacity in selected muscles/cuts of pigs. Nine muscles/cuts from four groups of pigs (surgically castrated, entire males, immunocastrated and sow) were analysed. Free fatty acids (FFA) were analysed using standard methods according to CSN EN ISO 660. Thiobarbituric reactive substances (TBARS) were determined as malondialdehyde (MDA) equivalents and antioxidant capacity was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) method . The highest content of FFA was observed in sows, detected to be significantly (P < 0.001) higher than in entire males. The highest content of TBARS was found in entire males; the content was significantly (P < 0.05) higher than in sows. Generally, the highest values of DPPH inhibition were detected in samples of surgically castrated pigs whereas the lowest values were observed in samples of entire males. Antioxidant capacity in musculus longissimus dorsi and backfat of surgically castrated pigs was significantly (P < 0.05) higher than in other evaluated groups of pigs. The study confirmed the differences in FFA and TBARS formation between analysed groups of pigs, probably due to differences in the fatty acid composition. The results of our study indicate that methods of castration have an effect on the antioxidant capacity of pork. These findings are of value to the meat industry.

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Section: Content Of Tbarscontrasting

confidence: 52%

Section: Antioxidant Capacitymentioning

confidence: 99%

Comparison of oxidation status and antioxidant capacity of meat from surgically castrated and immunocastrated pigs, entire males and sows

et al. 2019

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“…Immunocastration could also have positive effects on organic pig production: In a study by Grela and co-authors [83] boars, immunocastrates, barrows, and gilts were fattened under organic conditions. Growth performance as well as feed conversion ratio and lean meat content were more efficient in immunocastrates and boars than in barrows or gilts.…”

Section: Suitability Of Immunocastration For Alternative and High Quamentioning

confidence: 99%

Sustainability of Pork Production with Immunocastration in Europe

et al. 2019

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Immunocastration, a technique to replace surgical castration of piglets, consists of two consecutive vaccinations to induce antibodies which transiently suppress testicular functions and avoid boar taint. It is a method to ensure both a high product quality and a high level of animal welfare. The impact of immunocastration on the three pillars of sustainability has been studied extensively. While all aspects of sustainability have been studied separately, however, a contemporary global overview of different aspects is missing. In immunocastrates, performance results are better than in barrows, but worse than in boars. The environmental impact of pork production with immunocastrates is lower than with barrows, but higher than with boars. The level of aggression is considerably lower in immunocastrates compared to boars. Societal concerns are mainly related to food safety, and are not supported by scientific evidence. After second vaccination, immunocastrates switch from a boar- to a barrow-like status. Therefore, the timing of second vaccination is a fine-tuning tool to balance advantages of boars with environmental and economic benefits against increased risk of welfare problems and boar taint. Nevertheless, both synergic and conflicting relationships between the pillars of sustainability must be communicated along the value chain to produce tailored pork products.

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“…To perform a fatty acid analysis, the total fat of liver, heart, loin and backfat, was extracted with a chloroform/methanol mixture according to the Folch et al (1957) method. The percentage of fatty acid methyl esters was estimated using the gas chromatography procedure as described in Grela et al (2013). Cholesterol content was measured using the colorimetric method of Rhee et al (1982).…”

Section: Methodsmentioning

confidence: 99%

Correlations between cholesterol content, fatty acid composition and health lipid indices in fat of chosen tissues and organs of finishing pigs

Grela¹,

Hańczakowska²,

Kowalczuk-Vasilev³

2014

Polish Journal of Veterinary Sciences

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The aim of this study was to estimate fatty acid composition, health related lipid indices (atherogenic-AI and thrombogenic-IT indices, h/H ratio) and the correlation between these traits and cholesterol content in various tissues of fatteners. The experiment involved 60 crossbred pigs (PL × PLW) × Duroc. The animals were slaughtered at 115 ± 2.0 kg body weight. The tissue samples (backfat, m. longissimus, liver, heart) were collected to analyze fatty acid profile and cholesterol content. The highest PUFA level was determined in the fat of the heart and liver. Weak to moderate correlations were observed between cholesterol content and most of the studied indices of fatty acid profile of the analyzed tissues. Importantly, the most significant correlations were established between the examined traits in the heart fat. Generally, irrespective of tissue type, the cholesterol level was negatively correlated with total PUFA, n-3 and n-6 FA content and h/H ratio.

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Performance, pork quality and fatty acid composition of entire males, surgically castrated or immunocastrated males, and female pigs reared under organic system

Cited by 25 publications

References 20 publications

Comparison of oxidation status and antioxidant capacity of meat from surgically castrated and immunocastrated pigs, entire males and sows

Comparison of oxidation status and antioxidant capacity of meat from surgically castrated and immunocastrated pigs, entire males and sows

Sustainability of Pork Production with Immunocastration in Europe

Correlations between cholesterol content, fatty acid composition and health lipid indices in fat of chosen tissues and organs of finishing pigs

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