Journal of Swine Health and Production最新文献_第9页

A retrospective investigation of risk factors associated with loads of pigs positive for Senecavirus A at a midwestern US packing plant during the summer of 2017 2017年夏天，美国中西部一家包装厂的Senecavirus A阳性猪负荷相关风险因素的回顾性调查

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2020-03-01 DOI: 10.54846/jshap/1156

Gustavo S. Silva, Katyann Graham, V. Novak, D. Holtkamp, D. Linhares

引用次数: 2

Nutrient supplementation effects on pig performance and sickness behavior during a porcine reproductive and respiratory syndrome virus infection 猪繁殖与呼吸综合征病毒感染期间营养补充对猪生产性能和疾病行为的影响

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2020-03-01 DOI: 10.54846/jshap/1163

J. Colpoys, S. Curry, W. Schweer, N. Gabler

{"title":"Nutrient supplementation effects on pig performance and sickness behavior during a porcine reproductive and respiratory syndrome virus infection","authors":"J. Colpoys, S. Curry, W. Schweer, N. Gabler","doi":"10.54846/jshap/1163","DOIUrl":"https://doi.org/10.54846/jshap/1163","url":null,"abstract":"Objective: Investigate how nutrient additive inclusion impacts performance and sickness behavior in pigs infected with porcine reproductive and respiratory syndrome virus (PRRSV). Materials and methods: At 10 weeks of age, 108 PRRSV naïve barrows (mean [SD] body weight: 31 [1.4] kg) were allotted into 18 pens in a commercial barn and enrolled in a 35-day PRRSV challenge study. After a 5-day acclimation period, all pigs were inoculated intranasally and intramuscularly with a field strain of PRRSV and began nutrient supplement treatments. Treatments included no nutrient supplement (control; n = 6 pens), water nutrient supplement (water; n = 6 pens), and water and feed nutrient supplement (water+feed; n = 6 pens). Pen performance was recorded weekly at 0, 7, 14, 21, 28, and 35 days post inoculation (dpi). Pig home-pen behavior was recorded on -1, 3, 6, 9, 12, 15, and 18 dpi. Results: Over the 35-day challenge, no significant differences in pig viremia or performance were reported due to treatment. Compared to control, water+feed additive increased sitting in pigs; however, no other sickness behavior treatment differences were observed. Decreased activity was observed 6 and 9 dpi. Eating was decreased 6 dpi whereas drinking was decreased from 6 dpi throughout the rest of the behavioral observation period at 18 dpi. Implications: The addition of a nutrient additive in water and water+feed had minimal effect on sickness behavior and no observed effect on viremia or performance of PRRSV-infected pigs. Decreased activity, eating, and drinking may help caretakers identify health-challenged pigs.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48054186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Potential to export fresh pork in the event of an African swine fever outbreak in the United States 如果非洲猪瘟在美国爆发，出口新鲜猪肉的可能性

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2020-01-01 DOI: 10.54846/jshap/1152

J. Roth

引用次数: 2

Diagnosis of Yersinia enterocolitica serovar O:9 in a commercial 2400-sow farm with false-positive Brucella suis serology using western blot, competitive ELISA, bacterial isolation, and whole genome sequencing 利用western blot、竞争性ELISA、细菌分离和全基因组测序对某2400头商业母猪养殖场猪布鲁氏菌血清学假阳性小肠结肠炎耶尔森菌O:9的诊断

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2020-01-01 DOI: 10.54846/jshap/1153

Ross Free, Mark Ladd, R. Capsel, L. Cox, J. Hicks, K. Lantz, Michael J. Neault, James M. Kittrell, B. J. Meade

引用次数: 1

Effects of oral administration of Bacillus subtilis C-3102 to nursing piglets on preweaning growth performance, fecal consistency, and fecal microbes 哺乳仔猪口服枯草芽孢杆菌C-3102对断奶前生长性能、粪便稠度和粪便微生物的影响

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2020-01-01 DOI: 10.54846/jshap/1151

M. Menegat, J. DeRouchey, J. Woodworth, M. Tokach, R. Goodband, S. Dritz

{"title":"Effects of oral administration of Bacillus subtilis C-3102 to nursing piglets on preweaning growth performance, fecal consistency, and fecal microbes","authors":"M. Menegat, J. DeRouchey, J. Woodworth, M. Tokach, R. Goodband, S. Dritz","doi":"10.54846/jshap/1151","DOIUrl":"https://doi.org/10.54846/jshap/1151","url":null,"abstract":"Objective: To evaluate the effects of daily oral dose of Bacillus subtilis C-3102 to nursing piglets on fecal consistency, fecal microbes, and preweaning performance in a controlled trial. Materials and methods: A total of 26 litters of nursing piglets were assigned to receive a daily oral dose of placebo (n = 14 litters) or probiotic (n = 12 litters) for 18 days beginning on day 2 after birth until weaning on day 19. The probiotic treatment was B subtilis C-3102 (Calsporin, Calpis Co Ltd). Treatments were applied orally once daily to individual piglets via 1 mL sugar-based gel solution alone (placebo) or with B subtilis C-3102. Growth performance and litter size were measured on days 2, 9, 16, and 19. Fecal scoring and sampling were performed on days 2, 9, and 16 to categorize fecal consistency and conduct microbial analysis by isolation and enumeration method. Results: There was no statistical difference (P > .05) on growth performance, litter size, mortality, and fecal consistency in the preweaning period between placebo- and probiotic-treated litters. The numbers of B subtilis C-3102 (P < .001), total Bacillus species (P < .001), and total aerobes (P = .03) were increased in litters receiving probiotic compared to placebo. The numbers of Lactobacillus species, Enterococcus species, Clostridium perfringens, and Enterobacteriaceae were not influenced by treatment. Implications: A daily oral dose of B subtilis C-3102 probiotic did not influence preweaning growth performance and fecal consistency of nursing piglets and only influenced Bacillus species fecal microbial population.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43083885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Performance of immunologically castrated pigs at a commercial demonstration farm over 3.5 years 商业化示范农场免疫去势猪生产性能3.5年

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2019-11-01 DOI: 10.54846/jshap/1128

L. Rueff, M. Mellencamp, L. Pantoja

{"title":"Performance of immunologically castrated pigs at a commercial demonstration farm over 3.5 years","authors":"L. Rueff, M. Mellencamp, L. Pantoja","doi":"10.54846/jshap/1128","DOIUrl":"https://doi.org/10.54846/jshap/1128","url":null,"abstract":"A longitudinal study was conducted to evaluate performance and mortality of male pigs following immunological castration with a commercial gonadotropin releasing hormone analog-diphtheria toxoid conjugate (Improvest). Twelve groups of intact male weanling pigs (approximately 250/group) were delivered to a single barn over 3.5 years. Two doses of Improvest were administered subcutaneously, with the first dose given at 10 to 15 weeks of age and the second dose given at 18 to 19 weeks of age. Wean-to-market average daily gain (ADG) among the 12 test groups ranged from 0.83 to 0.99 kg/day (mean, 0.89 kg/day), feed efficiency (FE) ranged from 2.10 to 2.50 (mean, 2.24), and mortality ranged from 1.61% to 7.20% (mean, 3.25%). When lysine levels were increased by approximately 12% (groups 6-12), ADG increased by 6.3% and FE improved by 4.1%. Except for group 7 mortality, performance of all groups surpassed two 2016 industry benchmarks for ADG, FE, and mortality (National Pork Board Top 25% Producers and MetaFarms). Immunologically castrated barrows performed similarly with or without antimicrobial feed additives under these conditions. This study demonstrated that immunological castration delivered consistent high performance and livability that exceeded industry benchmarks.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45073172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The effect of oral meloxicam on piglet performance in the preweaning period 口服美洛昔康对断奶前期仔猪生产性能的影响

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2019-11-01 DOI: 10.54846/jshap/1129

M. C. Burkemper, Caitlin Cramer, S. Moeller, M. Pairis-Garcia

引用次数: 3

Pleurisy evaluation on the parietal pleura: an alternative scoring method in slaughtered pigs 壁胸膜胸膜的胸膜评价：一种可供选择的屠宰猪评分方法

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2019-11-01 DOI: 10.54846/jshap/1142

A. D. Provvido, A. R. Trachtman, E. Farina, Michael Odintzov Vaintrub, G. Fragassi, G. Vignola, G. Marruchella

引用次数: 7

Evidence of improved reporting of swine vaccination trials in the post-REFLECT statement publication period 在后reflect声明发布期改进猪疫苗接种试验报告的证据

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2019-09-01 DOI: 10.54846/jshap/1125

C. Moura, S. Totton, J. Sargeant, T. O’Sullivan, D. Linhares, A. O'Connor

{"title":"Evidence of improved reporting of swine vaccination trials in the post-REFLECT statement publication period","authors":"C. Moura, S. Totton, J. Sargeant, T. O’Sullivan, D. Linhares, A. O'Connor","doi":"10.54846/jshap/1125","DOIUrl":"https://doi.org/10.54846/jshap/1125","url":null,"abstract":"Objectives: Describe and compare the proportion of studies reporting the method used to assign study units to treatment groups, reporting a random allocation approach, reporting 18 REFLECT items, and the proportion of studies having a low risk-of-bias assessment in swine vaccination trial studies published after the REFLECT statement, compared to studies published before. Materials and Methods: The study population was 61 studies that evaluated vaccines targeted at pathogens affecting swine health or pork safety. Two reviewers assessed the reporting of 18 of 22 REFLECT items and 5 risk-of-bias domains. Results: Authors reported the method used to allocate experimental units in 33 of 42 (79%) and 14 of 19 (74%) studies published prior to and following REFLECT, respectively. There has been a substantial shift in the reporting of allocation approaches. Before 2011, only 2 of 25 (8%) studies that reported using random allocation provided supporting evidence. This increased in studies published between 2011-2017 (4 of 6; 66%). Before 2011, 8 of 33 (24%) studies reported using systematic allocation, which increased to 43% (6 of 14 studies) between 2011-2017. There has also been an increase in the prevalence of reporting for 14 of the 18 REFLECT items. There was an increase in the number of studies reporting evidence to support true randomization to group and data that suggests few baseline imbalances. Implications: Data from this study suggests swine vaccination trial reporting improved, which may be due to researchers having more access to better quality information.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44585249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Efficacy of a commercial porcine epidemic diarrhea virus vaccine at reducing duration of viral shedding in gilts 商品化猪流行性腹泻病毒疫苗降低母猪病毒脱落时间的效果

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2019-09-01 DOI: 10.54846/jshap/1127

Justin Brown, C. Rademacher, Samuel R. Baker, Korakrit Poonsuk, Ting-Yu Cheng, K. Skoland, P. Canning, A. Forseth, L. Karriker

{"title":"Efficacy of a commercial porcine epidemic diarrhea virus vaccine at reducing duration of viral shedding in gilts","authors":"Justin Brown, C. Rademacher, Samuel R. Baker, Korakrit Poonsuk, Ting-Yu Cheng, K. Skoland, P. Canning, A. Forseth, L. Karriker","doi":"10.54846/jshap/1127","DOIUrl":"https://doi.org/10.54846/jshap/1127","url":null,"abstract":"Objective: To evaluate if the use of a commercially available killed porcine epidemic diarrhea virus (PEDV) vaccine shortens the duration of PEDV shedding in replacement gilts. Materials and methods: Four treatment groups composed of 20 females were utilized for this study. Gilts in the CONTROL group had no previous exposure to PEDV, the nonvaccinated (NV) group had been previously exposed, and the PRE and POST groups received two doses of a commercial, killed PEDV vaccine either prior to or following a challenge with PEDV, respectively. Individual fecal samples were collected weekly and tested by real-time reverse transcription-polymerase chain reaction (rRT-PCR) for virus detection. Results: Previous exposure to PEDV was found to shorten the time that virus can be detected in the feces compared to fecal samples of naïve animals (P < .001). Vaccination, either prior to or following the challenge, was not found to shorten the duration of PEDV shedding in feces. Implications: These results showed that vaccination of gilts, either prior to the challenge or afterwards, with a killed commerical PEDV vaccine did not shorten the period that virus was detectable in the feces by rRT-PCR suggesting that viral shedding in feces was not influenced by administration of a killed commercial vaccine. While previous infection with virulent PEDV did not prevent re-infection, it did have a significant effect on the amount of time virus was detected following a subsequent exposure.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43910170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3