References

Alonso V, del Mar Campo M, Español S, Roncalés P, Beltrán JA (2009) Effect of crossbreeding and gender on meat quality and fatty acid composition in pork. Meat Science 81, 209–217.
| CrossRef | CAS |

Andersson K, Schaub A, Lundström K, Thomke S, Hansson I (1997) The effects of feeding system, lysine level and gilt contact on performance, skatole levels and economy of entire male pigs. Livestock Production Science 51, 131–140.
| CrossRef |

AOAC (1990) ‘Official methods of analysis.’ 15th edn. (AOAC: Washington, DC)

Babol J, Zamaratskaia G, Juneja R, Lundström K (2004) The effect of age on distribution of skatole and indole levels in entire male pigs in four breeds: Yorkshire, Landrace, Hampshire and Duroc. Meat Science 67, 351–358.
| CrossRef | CAS |

Bertram HC, Andersen HJ, Karlsson AH, Horn P, Hedegaard J, Norgaard L, Engelsen SB (2003) Prediction of technological quality (cooking loss and Napole Yield) of pork based on fresh meat characteristics. Meat Science 65, 707–712.
| CrossRef |

Bonneau M (1982) Compounds responsible for boar taint, with special emphasis on androstenone: a review. Livestock Production Science 9, 687–705.
| CrossRef | CAS |

Bonneau M, Dufour R, Chouvet C, Roulet C, Meadus W, Squires EJ (1994) The effects of immunization against luteinizing hormone-releasing hormone on performance, sexual development, and levels of boar taint-related compounds in intact male pigs. Journal of Animal Science 72, 14–20.

Booth W (1975) Changes with age in the occurrence of C19 steroids in the testis and submaxillary gland of the boar. Journal of Reproduction and Fertility 42, 459–472.
| CrossRef | CAS |

Cameron ND, Enser M (1991) Fatty acid composition of lipid in longissimus dorsi muscle of Duroc and British Landrace pigs and its relationship with eating quality. Meat Science 29, 295–307.
| CrossRef | CAS |

Claus R, Weiler U, Herzog A (1994) Physiological aspects of androstenone and skatole formation in the boar – a review with experimental data. Meat Science 38, 289–305.
| CrossRef | CAS |

Claus R, Lösel D, Lacorn M, Mentschel J, Schenkel H (2003) Effects of butyrate on apoptosis in the pig colon and its consequences for skatole formation and tissue accumulation. Journal of Animal Science 81, 239–248.

DeVol DL, McKeith FK, Bechtel PJ, Novakofski J, Shanks RD, Carr TR (1988) Variation in composition and palatability traits and relationships between muscle characteristics and palatability in a random sample of pork carcasses. Journal of Animal Science 66, 385–395.

Dunshea FR, Colantoni C, Howard K, McCauley I, Jackson P, Long KA, Lopaticki S, Nugent EA, Simons JA, Walker J, Hennessy DP (2001) Vaccination of boars with a GnRH vaccine (Improvac) eliminates boar taint and increases growth performance. Journal of Animal Science 79, 2524–2535.

Ender K, Nürnberg K, Kuhn G, Rehfeldt Ch (1993) Effect of porcine somatotropin on carcass, meat and fat quality of growing-finishing pigs. In ‘Proceedings of the 39th International Congress of Meat Science and Technology’. (Ed. WD Mueller) p. 22. (Clearbrook Communications: Calgary, Canada)

Enser M, Dransfield E, Jolley PD, Jones RCD, Leedham M (1984) The composition and consistency of pig backfat as it affects the quality of vacuum-packed rindless bacon rashers. Journal of the Science of Food and Agriculture 35, 1230–1240.
| CrossRef | CAS |

Enser M, Richardson RI, Wood JD, Gill BP, Sheard PR (2000) Feeding linseed to increase the n-3 PUFA of pork: fatty acid composition of muscle, adipose tissue, liver and sausages. Meat Science 55, 201–212.
| CrossRef | CAS |

Fernandez ML, West KL (2005) Mechanisms by which dietary fatty acids modulate plasma lipids. The Journal of Nutrition 135, 2075–2078.

Folch J, Lees M, Stanley GHS (1957) A simple method for the isolation and purification of total lipids from animal tissues. The Journal of Biological Chemistry 226, 497–509.

Font i Furnols M, Gispert M, Guerrero L, Velarde A, Tibau J, Soler J, Hortós M, García-Regueiro JA, Pérez J, Suárez P, Oliver MA (2008) Consumers’ sensory acceptability of pork from immunocastrated male pigs. Meat Science 80, 1013–1018.
| CrossRef |

Font i Furnols M, González J, Gispert M, Oliver MA, Hortós M, Pérez J, Suárez P, Guerrero L (2009) Sensory characterization of meat from pigs vaccinated against gonadotropin releasing factor compared to meat from surgically castrated, entire male and female pigs. Meat Science 83, 438–442.
| CrossRef | CAS |

Fuchs T, Nathues H, Koehrmann A, Andrews S, Brock F, Sudhaus N, Klein G, Beilage E (2009) A comparison of the carcase characteristics of pigs immunized with a ‘gonadotrophin-releasing factor (GnRF)’ vaccine against boar taint with physically castrated pigs. Meat Science 83, 702–705.
| CrossRef | CAS |

Gao J, Lin H, Wang XJ, Song ZG, Jiao HC (2010) Vitamin E supplementation alleviates the oxidative stress induced by dexamethasone treatment and improves meat quality in broiler chickens. Poultry Science 89, 318–327.
| CrossRef | CAS |

Hennessy DP, Dunshea FR, McCauley I, Colantoni C, Jackson P, Long KA, Lopaticki S, Nugent EA, Simons JA, Walker J (2000) Immunocastration – world first boar taint vaccine. In ‘Proceedings of the16th International Pig Veterinary Society Congress’. (Ed. C Cargill, S McOrist) pp. 315–323. (Causal Productions: Melbourne)

Honikel KO (1998) Reference methods for the assessment of physical characteristics of meat. Meat Science 49, 447–457.
| CrossRef | CAS |

Jaros P, Bürgi E, Stärk KDC, Claus R, Hennessy D, Thun R (2005) Effect of active immunization against GnRH on androstenone concentration, growth performance and carcass quality in intact male pigs. Livestock Production Science 92, 31–38.
| CrossRef |

Kouba M, Mourot J (1998) Effect of a high linoleic acid diet on 9-desaturase activity, lipogenesis and lipid composition of pig subcutaneous adipose tissue. Reproduction, Nutrition, Development 38, 31–37.
| CrossRef | CAS | 9-desaturase activity, lipogenesis and lipid composition of pig subcutaneous adipose tissue.&title=Reproduction, Nutrition, Development&date=1998&volume=38&spage=31&epage=37&sid=csiro&aulast=Kouba&aufirst=M" target="_blank" >

Kuchiba-Manabe M, Matoba T, Hasegawa K (1991) Sensory changes in umami taste of inosine-5′-monophosphate solution after heating. Journal of Food Science 56, 1429–1432.
| CrossRef | CAS |

Lealiifano AK, Pluske JR, Nichols RR, Dunshea FR, Mullan BP (2009) Altering the timing of an immunocastration vaccine (Improvac) to optimize pig performance. In ‘Manipulating pig production XII’. (Ed. RJ van Barneveld) pp. 184. (Australasian Pig Science Association: Werribee)

Metz C, Claus R (2003) Active immunization of boars against GnRH does not affect growth hormone but lowers IGF-I in plasma. Livestock Production Science 81, 129–137.
| CrossRef |

Migdal W, Barteczko J, Brwie F (2000) The influence of dietary levels of essential fatty acid in full-dose mixtures on cholesterol level in blood and tissues in fatteners. Advances in Agriculture Science 7, 43–48.

Nürnberg K, Wegner J, Ender K (1998) Factors influencing fat composition in muscle and adipose tissue of farm animals. Livestock Production Science 56, 145–156.
| CrossRef |

Pauly C, Spring P, O’Doherty JV, Ampuero Kragten S, Bee G (2009) Growth performance, carcass characteristics and meat quality of group-penned surgically castrated, immunocastrated (Improvac) and entire male pigs and individually penned entire male pigs. Animal 3, 1057–1066.
| CrossRef | CAS |

Prunier A, Bonneau M, von Borell EH, Cinotti S, Gunn M, Fredriksen B, Giersing M, Morton DB, Tuyttens FAM, Velarde A (2006) A review of the welfare consequences of surgical castration in piglets and the evaluation of non-surgical methods. Animal Welfare (South Mimms, England) 15, 277–289.

SSPS (2008) ‘Statistical package for social sciences for Windows 2008. Version 16.0.’ (SPSS Inc.: Chicago, IL)

The State Science and Technology Commission (1988) ‘Regulations for the administration of affairs concerning experimental animals.’ (The State Science and Technology Commission: Beijing, China)

Turkstra JA, Zeng XY, van Diepen JTM, Jongbloed AW, Oonk HB, Van de Wiel DFM, Meloen RH (2002) Performance of male pigs immunized against GnRH is related to the time of onset of biological response. Journal of Animal Science 80, 2953–2959.

Wang BY, Zhang GH (1988) A method of evaluating the quality of pig meat and fat. Journal Inner Mongolia College of Agriculture & Animal Husbandry 1, 25–31.

Whittington FM, Prescott NJ, Wood JD, Enser M (1986) The effect of dietary linoleic acid on the firmness of backfat in pigs of 85 kg live weight. Journal of the Science of Food and Agriculture 37, 753–761.
| CrossRef | CAS |

Wood JD, Jones RCD, Bayntun JA, Dransfield E (1985) Backfat quality in boars and barrows at 90 kg live weight. Animal Production 40, 481–487.
| CrossRef |

Wood J, Nute G, Richardson R, Whittington F, Southwood O, Plastow G, Mansbridge R, da Costa N, Chang KC (2004) Effects of breed, diet and muscle on fat deposition and eating quality in pigs. Meat Science 67, 651–667.
| CrossRef | CAS |

Zamaratskaia G, Babol J, Madej A, Squires E, Lundström K (2004) Age-related variation of plasma concentrations of skatole, androstenone, testosterone, oestradiol-17β, oestrone sulphate, dehydroepiandrosterone sulphate, triiodothyronine and IGF-1 in six entire male pigs. Reproduction in Domestic Animals 39, 168–172.
| CrossRef | CAS |

Zamaratskaia G, Andersson HK, Chen G, Andersson K, Madej A, Lundström K (2008a) Effect of a gonadotropin-releasing hormone vaccine (Improvac) on steroid hormones, boar taint compounds and performance in entire male pigs. Reproduction in Domestic Animals 43, 351–359.
| CrossRef | CAS |

Zamaratskaia G, Rydhmer L, Andersson HK, Chen G, Lowagie S, Andersson K, Lundström K (2008b) Long-term effect of vaccination against gonadotropin-releasing hormone, using Improvac, on hormonal profile and behaviour of male pigs. Animal Reproduction Science 108, 37–48.
| CrossRef | CAS |