Effect of terminal sire line and timing second vaccination on effectiveness of immunocastration, performance, and carcass and meat quality

被引：4
|
作者：
Kowalski, E. [1 ,2 ]
Vossen, E. [2 ]
Millet, S. [1 ]
Ampe, B. [1 ]
De Smet, S. [2 ]
Aluwe, M. [1 ]
机构：
[1] Flander Res Inst Agr Fisheries & Food ILVO, Anim Sci Unit, Melle, Belgium
[2] Univ Ghent, Dept Anim Sci & Aquat Ecol, Lab Anim Nutr & Anim Prod Qual, Ghent, Belgium
来源：
MEAT SCIENCE | 2021年 / 175卷
关键词：
Immunocastration; RYR1; gene; Belgian Pietrain; Canadian Duroc; Boar taint; GONADOTROPIN-RELEASING-HORMONE; GROWTH-PERFORMANCE; BOAR TAINT; HALOTHANE GENOTYPE; MALE PIGS; SURGICAL-CASTRATION; PORK QUALITY; SLAUGHTER; GNRH; IMPROVAC(R);
D O I：
10.1016/j.meatsci.2021.108451
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Performance (from 10 weeks until slaughter), carcass and meat quality, and effectiveness of immunocastration was compared in crossbred offspring of stress positive (BP+) and negative (BP-) Belgian Pietrain and Canadian Duroc (CD) given the second vaccination of Improvac (R) at different times (4, 6, 8 weeks before slaughter). CD offspring had a significantly higher daily gain (DG) and feed intake (DFI), and lower predicted lean meat percentage (LMP) and dressing yield compared to BP+ and BP-, while feed conversion ratio (FCR) did not differ. CD offspring had significantly lower drip loss and higher pH(i), intramuscular fat content than BP+ and BP- (except for pH(i)). No significant effect of vaccination time on DG nor FCR was observed. Predicted LMP tended to increase as time-post injection decreased, while meat quality was minor affected. Earlier vaccination had no effect on the effectiveness of immunocastration based on testosterone and GnRH-binding.
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页数：13
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