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Effect of terminal sire line and timing second vaccination on effectiveness of immunocastration, performance, and carcass and meat quality.
- Source :
-
Meat science [Meat Sci] 2021 May; Vol. 175, pp. 108451. Date of Electronic Publication: 2021 Jan 29. - Publication Year :
- 2021
-
Abstract
- 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 Piétrain and Canadian Duroc (CD) given the second vaccination of Improvac® 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 <subscript>i,</subscript> intramuscular fat content than BP+ and BP- (except for pH <subscript>i</subscript> ). 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.<br /> (Copyright © 2021 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-4138
- Volume :
- 175
- Database :
- MEDLINE
- Journal :
- Meat science
- Publication Type :
- Academic Journal
- Accession number :
- 33556676
- Full Text :
- https://doi.org/10.1016/j.meatsci.2021.108451