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Yamsakul, Panuwat,Patchanee, Prapas,Yano, Terdsak,Boonma, Thanawish,Somkert, Chalermchart,Sathanawongs, Anucha The Korean Society of Veterinary Science 2017 大韓獸醫學會誌 Vol.57 No.1
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 ($400{\mu}g/dose$). 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.
Pakpoom Tadee,Kittipong Kumpapong,Danai Sinthuya,Panuwat Yamsakul,Nipa Chokesajjawatee,Supachai Nuanualsuwan,Suchawan Pornsukarom,Bayleyegn Z. Molla,Wondwossen A. Gebreyes,Prapas Patchanee 대한수의학회 2014 Journal of Veterinary Science Vol.15 No.2
This study was conducted to analyze the prevalence andquantitative loads of Salmonella spp. on pig farms in ChiangMai, Lamphun, Thailand to assess loading levels beforeslaughtering. The serotype diversity, antimicrobial-resistancepattern and pulse-field type of Salmonella spp. were alsocharacterized to assess the dynamic propagation of thepathogen. The Salmonella-positive prevalence was 246/805(30.56%), and the quantitative loads varied from 1.48∼4.04Log10MPN/g, with a mean ± standard deviation of 2.11 ± 0.57. AMP/S/TE (ampicillin/streptomycin/tetracycline) was thehighest frequency antimicrobial resistance pattern found inthis study. In addition, Salmonella Rissen was the primaryserotype in this region. PFGE results indicated the occurrenceof infection by cross contamination among pig farms. Ourstudy showed that pork is easily contaminated with thispathogen. Farm control programs must be based on strictbiosecurity and hygienic measures, which could furtherreduce the contamination pressure at slaughterhouses orretail shops.
Nuangmek, Aniroot,Rojanasthien, Suvichai,Patchanee, Prapas,Yano, Terdsak,Yamsakul, Panuwat,Chotinun, Suwit,Tadee, Pakpoom The Korean Society of Veterinary Science 2018 大韓獸醫學會誌 Vol.58 No.1
This study aimed at determining the current knowledge, attitude, and practices (KAP) of layer and pig farmers to antimicrobial usage and its consequences. Description of such KAP could provide insights useful for promoting the rational use of antimicrobials in livestock. From May 2014 to February 2016, a survey involving 251 respondents in Chiang Mai, Lamphun, and Chonburi provinces, Thailand, was conducted by using a validated questionnaire. More than half (51.0%) of the respondents incorrectly believed that antimicrobial drug efficacy could not be reduced by using sub-recommended dosages, 61.2% had misconceptions about non-therapeutic antimicrobial use, and 66.9% inaccurately felt that antimicrobials were also effective for virus and fungi. Over half (50.6-55.2%) did not see the need to follow instructions or advice of veterinarians. Moreover, only 10.4% regularly relied on responses to drugs sensitivity tests when evaluating the effectiveness of antimicrobials. Overall, assessment of KAP regarding antimicrobial usage indicated that the majority of respondents had low levels of knowledge of antimicrobials, neutral rather than positive attitudes, and employed poor practices in the use of antimicrobials. The results indicate improvements in KAP could be helpful in developing more effective interventions by farmers, reduce antibiotic usage, and slow the growth of antimicrobial resistance.