Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions

This study investigated the effects of gonadotropin-releasing hormone (GnRH) vaccine on pig growth, carcass quality, and sensory perceptions of pork meat by Thai consumers. Male crossbred pigs (n = 30) were separated into three groups of 10 pigs each: boars, immunocastrated pigs, and surgically cast...

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Main Authors: Panuwat Yamsakul, Prapas Patchanee, Terdsak Yano, Thanawish Boonma, Chalermchart Somkert, Anucha Sathanawongs
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/57950
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-579502018-09-05T03:55:22Z Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions Panuwat Yamsakul Prapas Patchanee Terdsak Yano Thanawish Boonma Chalermchart Somkert Anucha Sathanawongs Veterinary This study investigated the effects of gonadotropin-releasing hormone (GnRH) vaccine on pig growth, carcass quality, and sensory perceptions of pork meat by Thai consumers. Male crossbred pigs (n = 30) were separated into three groups of 10 pigs each: boars, immunocastrated pigs, and surgically castrated pigs. The immunocastrated group was immunized at 13 and 19 weeks of age with GnRH vaccine (400 μg/dose). All pigs were slaughtered at 24 weeks of age. Blood samples were collected and testes size determined. Testes weight and back fat thickness were recorded at the time of slaughter, and meat samples were collected for sensory assessment by Thai consumers. Testosterone and progesterone concentration levels decreased significantly two weeks after the second dose of GnRH (p < 0.05), and the GnRH antibody titer of the immunocastrated pigs was significantly high two weeks after the second dose of GnRH (p < 0.05). GnRH vaccine significantly reduced the weight and size of testes. Thai consumers reported no significant differences in odor or flavor among meat samples from the three groups. In conclusion, immunocastration improved growth performance, removed the need for castration surgery, and avoided "boar taint" in the meat. It has also no distinct trace of the boar taint same as pork that is currently produced from physically castrated pig which is making it acceptable to consumers. 2018-09-05T03:55:21Z 2018-09-05T03:55:21Z 2017-01-01 Journal 24661392 24661384 2-s2.0-85016576261 10.14405/kjvr.2017.57.1.23 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85016576261&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57950
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Veterinary
spellingShingle Veterinary
Panuwat Yamsakul
Prapas Patchanee
Terdsak Yano
Thanawish Boonma
Chalermchart Somkert
Anucha Sathanawongs
Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
description This study investigated the effects of gonadotropin-releasing hormone (GnRH) vaccine on pig growth, carcass quality, and sensory perceptions of pork meat by Thai consumers. Male crossbred pigs (n = 30) were separated into three groups of 10 pigs each: boars, immunocastrated pigs, and surgically castrated pigs. The immunocastrated group was immunized at 13 and 19 weeks of age with GnRH vaccine (400 μg/dose). All pigs were slaughtered at 24 weeks of age. Blood samples were collected and testes size determined. Testes weight and back fat thickness were recorded at the time of slaughter, and meat samples were collected for sensory assessment by Thai consumers. Testosterone and progesterone concentration levels decreased significantly two weeks after the second dose of GnRH (p < 0.05), and the GnRH antibody titer of the immunocastrated pigs was significantly high two weeks after the second dose of GnRH (p < 0.05). GnRH vaccine significantly reduced the weight and size of testes. Thai consumers reported no significant differences in odor or flavor among meat samples from the three groups. In conclusion, immunocastration improved growth performance, removed the need for castration surgery, and avoided "boar taint" in the meat. It has also no distinct trace of the boar taint same as pork that is currently produced from physically castrated pig which is making it acceptable to consumers.
format Journal
author Panuwat Yamsakul
Prapas Patchanee
Terdsak Yano
Thanawish Boonma
Chalermchart Somkert
Anucha Sathanawongs
author_facet Panuwat Yamsakul
Prapas Patchanee
Terdsak Yano
Thanawish Boonma
Chalermchart Somkert
Anucha Sathanawongs
author_sort Panuwat Yamsakul
title Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
title_short Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
title_full Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
title_fullStr Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
title_full_unstemmed Gonadotropin-releasing hormone immunization and castration in male pigs: Effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
title_sort gonadotropin-releasing hormone immunization and castration in male pigs: effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers' sensory perceptions
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85016576261&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/57950
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