Journal of Swine Health and Production最新文献_第6页

Establishing Mycoplasma hyopneumoniae herd status classification criteria for breeding herds 猪肺炎支原体繁殖群状态分类标准的建立

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-11-01 DOI: 10.54846/jshap/1221

M. Clavijo, Lucina Galina Pantoja, D. Holtkamp, P. Yeske, Clayton Johnson, Michelle Sprague, E. Fano, R. Main, Emily McDowell, T. Painter, L. Becton, David Baumert, L. Glowzenski, H. Snelson, A. Maschhoff

引用次数: 3

Evaluation of a staged loadout procedure for market swine to prevent transfer of pathogen contaminated particles from livestock trailers to the barn 防止病原体污染颗粒从牲畜拖车转移到畜棚的市场猪分阶段装载程序的评估

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-09-01 DOI: 10.54846/jshap/1229

C. Ruston, D. Linhares, Eli Blay, M. Nickel, K. Skoland, Heather Kittrell, Justin Brown, L. Karriker, M. Breuer, Lauren A McKeen, D. Holtkamp

{"title":"Evaluation of a staged loadout procedure for market swine to prevent transfer of pathogen contaminated particles from livestock trailers to the barn","authors":"C. Ruston, D. Linhares, Eli Blay, M. Nickel, K. Skoland, Heather Kittrell, Justin Brown, L. Karriker, M. Breuer, Lauren A McKeen, D. Holtkamp","doi":"10.54846/jshap/1229","DOIUrl":"https://doi.org/10.54846/jshap/1229","url":null,"abstract":"Objective: Evaluate the effectiveness of a staged market pig loading procedure for reducing contaminant transfer from livestock trailers to the barn. Materials and methods: A conventional loading procedure was compared to a staged procedure, with 10 replicates each. In the staged procedure, one loadout crew member was stationed between two lines of separation and could not cross onto the livestock trailer or into the center alleyway of the barn. The remaining loadout crew members within the barn could not cross into the loadout alleyway or chute. In the conventional procedure, a loadout crew member moved pigs from the center alleyway, through the loadout alleyway, and up the chute, but did not cross onto the livestock trailer. Fluorescent powder was mixed with obstetrical lubricant and wood shavings and spread evenly on the livestock trailer floor, just inside the roll-up door that opens to the chute. After each loadout, fluorescent powder contamination was evaluated at 8 locations: one in the chute, two in the loadout alleyway, and five in the center alleyway of the barn. Results: Four of five center alleyway locations had significantly lower contamination (P < .05) for the staged protocol compared to the conventional protocol. The level of contamination at the fifth center alleyway location was not statistically different (P = .057). The contamination level at all other locations was not statistically significant between the two groups (P > .05). Implications: The staged loading procedure effectively reduced the transfer of fluorescent powder from the livestock trailer to the barn.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41666577","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

Proposed modifications to porcine reproductive and respiratory syndrome virus herd classification 对猪繁殖与呼吸综合征病毒群分类提出修改意见

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-09-01 DOI: 10.54846/jshap/1218

D. Holtkamp, M. Torremorell, C. Corzo, D. Linhares, M. Almeida, P. Yeske, D. Polson, L. Becton, H. Snelson, T. Donovan, J. Pittman, Clayton Johnson, C. Vilalta, G. Silva, J. Sanhueza

引用次数: 15

Development of effective and minimally invasive surgical techniques for the preparation of intact, sterile boars 开发有效的微创手术技术，以制备完整、无菌的公猪

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-09-01 DOI: 10.54846/jshap/1228

B. F. V. Superti, Andressa Pereira de Souza, Bruna Muller, Zigomar da Silva, E. Zanella, Ricardo Zinella, Mariana Groke Marques

{"title":"Development of effective and minimally invasive surgical techniques for the preparation of intact, sterile boars","authors":"B. F. V. Superti, Andressa Pereira de Souza, Bruna Muller, Zigomar da Silva, E. Zanella, Ricardo Zinella, Mariana Groke Marques","doi":"10.54846/jshap/1228","DOIUrl":"https://doi.org/10.54846/jshap/1228","url":null,"abstract":"Objective: The objective of this study was to evaluate three surgical procedures to produce intact, sterile boars. Materials and methods: Boars (n = 39) were allocated to one of four treatment groups: no surgery (control), epididymectomy by removal of the epididymis tail (TE), vasectomy via scrotal access (VS), and vasectomy via inguinal access (VI) at 63 days of age. Selected physiological, hematological, and endocrine responses were monitored after surgeries to evaluate the different techniques’ relative safety and effectiveness. Results: Libido and testosterone concentrations were not affected by surgical treatment and were similar to those observed in the control group. The TE and VS procedures required the least and most time to complete, respectively, while VI was intermediate (P < .001). Both lactate and cortisol concentrations were elevated at the time of surgery compared with the control group, but had decreased by 2 days post surgery (P = .02). Implications: Considering the surgical time and ease, the TE procedure is suggested as the choice technique for producing intact, sterile boars. The swine industry is shifting from individual crates to the use of group pen housing of sows. Use of intact, sterile boars could be implemented to improve estrus detection in group pen housing systems.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42926504","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

Evaluation of Sow Caliper for body condition measurement of gestating sows 母猪卡尺用于妊娠母猪体况测量的评价

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-09-01 DOI: 10.54846/jshap/1232

Yuzhi Z. Li, S. Cui, S. Baidoo, L. Johnston

{"title":"Evaluation of Sow Caliper for body condition measurement of gestating sows","authors":"Yuzhi Z. Li, S. Cui, S. Baidoo, L. Johnston","doi":"10.54846/jshap/1232","DOIUrl":"https://doi.org/10.54846/jshap/1232","url":null,"abstract":"Objectives: To evaluate correlation between Sow Caliper measurement and backfat depth (BFD), and to determine the ideal caliper measurement that predicts optimal BFD prefarrowing to support performance of lactating sows. Materials and methods: Multiparous sows (n = 928, Parity 1-9) were group housed in pens from day 35 to 109 of gestation. Caliper measurements, BFD, visual body condition scores (BCS), and body weight were recorded upon sows’ entry and exit of gestation pens. Subsequent farrowing performance was recorded. Caliper measurements were classified into five categories: category 1 = 4.0 to 8.0 units, category 2 = 8.5 to 10.0 units, category 3 = 10.5 to 12.0 units, category 4 = 12.5 to 14.0 units, and category 5 = 14.5 to 18.0 units. Results: Caliper measurement was correlated positively with BFD (r = 0.71-0.75; P < .001) and BCS (r = 0.67-0.75; P < .001) on days 35 and 109 of gestation. Based on sow performance over one reproduction cycle and BFD recommendations, caliper category 4 on day 109 of gestation was deemed ideal for prefarrowing sows. The estimated lower and upper limits of BFD for prefarrowing sows in caliper category 4 were 15.6 and 18.0 mm, respectively. Caliper measurements explained about 55% of variation in BFD of gestating sows prefarrowing. Implications: The Sow Caliper can be used to evaluate body condition of gestating sows. To maintain body condition and reproductive performance, caliper measurements of 12.5 to 14.0 units are recommended for prefarrowing sows across parities, excluding gilts.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44899447","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: 0

Evaluation of PRRSV vaccine efficacy following infection with PRRSV 1-7-4 PRRSV感染后PRRSV疫苗疗效评价1-7-4

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-07-01 DOI: 10.54846/jshap/1210

E. Little, J. Dunkelberger, D. Hanson, J. Eggert, M. Gonda, M. MacNeil, E. Knol, S. Dee

引用次数: 0

Field evaluation of a new single-dose Mycoplasma hyopneumoniae bacterin effects on growth performance 新型单剂量猪肺炎支原体菌剂对生长性能的现场评价

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-07-01 DOI: 10.54846/jshap/1226

S. Kim, T. Oh, Siyeon Yang, K. Park, Hyejean Cho, C. Chae

{"title":"Field evaluation of a new single-dose Mycoplasma hyopneumoniae bacterin effects on growth performance","authors":"S. Kim, T. Oh, Siyeon Yang, K. Park, Hyejean Cho, C. Chae","doi":"10.54846/jshap/1226","DOIUrl":"https://doi.org/10.54846/jshap/1226","url":null,"abstract":"Objective: Evaluate the efficacy of a new single-dose bacterin against Mycoplasma hyopneumoniae under field conditions. Materials and methods: Three separate farms were selected based on their history of enzootic pneumonia. On each farm, vaccinated pigs (n = 20; 10 male and 10 female) were administered a single dose of the M hyopneumoniae bacterin at 21 days of age while unvaccinated pigs (n = 20; 10 male and 10 female) were administered a single dose of phosphate buffered saline at the same age. Results: Vaccination against M hyopneumoniae reduces the severity of lung lesions and clinical signs such as coughing, which leads to improved growth performance of the pig. Vaccinated pigs had a significantly higher (P = .02 for farm A, P = .02 for farm B, and P = .02 for farm C) average daily weight gain between 21 to 175 days old (0 to 154 days post vaccination) and elicited cell-mediated immunity, as measured by M hyopneumoniae-specific interferon-γ secreting cells, when compared with unvaccinated pigs located at all 3 farms. Implications: The data presented in this field study demonstrated that the M hyopneumoniae bacterin improved growth performance effectively in 3 farms suffering from enzootic pneumonia.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46384870","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: 0

Effects of iron dosage administered to newborn piglets on hematological measures, preweaning and postweaning growth performance, and postweaning tissue mineral content 新生仔猪铁剂量对血液学指标、断奶前和断奶后生长性能以及断奶后组织矿物质含量的影响

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-07-01 DOI: 10.54846/jshap/1207

T. Chevalier, H. J. Monegue, M. Lindemann

{"title":"Effects of iron dosage administered to newborn piglets on hematological measures, preweaning and postweaning growth performance, and postweaning tissue mineral content","authors":"T. Chevalier, H. J. Monegue, M. Lindemann","doi":"10.54846/jshap/1207","DOIUrl":"https://doi.org/10.54846/jshap/1207","url":null,"abstract":"Objective: To evaluate the effect of iron dosage given at birth on pig growth performance, the course of the preweaning and postweaning blood profile, and postweaning tissue mineral concentration. Materials and methods: Crossbred pigs (n = 70) were assigned to 1 of 5 iron dosages (0, 50, 100, 200, and 300 mg iron) administered by injection on day 0. Body weight and blood samples were collected at day 0, 1, 2, 3, 4, 6, 8, 11, 17, 22, 23, 24, 25, 29, 38, and 52. All blood samples were analyzed for complete blood count (CBC) profile. On day 22, 38, and 52, tissues from 3 pigs per treatment were obtained for analysis of trace minerals (Fe, Zn, Cu, and Mn). Results: Pigs receiving no iron at birth had the slowest growth and lowest hematological profile demonstrating that iron deficiency anemia (IDA) was induced. Hemoglobin concentrations were increased as early as day 6 and continued to increase until day 17 for the 200 and 300 mg iron treatments. Body weight, other hematological measures, and tissue iron content were greater for pigs that received an iron injection at birth. Implications: Pigs that did not receive an iron injection shortly after birth developed IDA resulting in poor growth, low blood hematological measures, and depleted tissue iron reserves. Supplying an iron injection at birth improved preweaning and postweaning growth performance and CBC profile. The magnitude and timing of peak hematological responses was dose dependent.","PeriodicalId":17095,"journal":{"name":"Journal of Swine Health and Production","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46630635","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: 6

Late gestation hemoglobin concentrations in sows: Predictor for stillborn piglets 妊娠晚期母猪血红蛋白浓度:预测死产仔猪

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-07-01 DOI: 10.54846/jshap/1249

E. Noblett, Juliana Bonin Ferriera, Sheeva Bhattarai, J. Nielsen, G. Almond

引用次数: 1

The effect of extended storage on virus survival in feed 延长贮藏时间对饲料中病毒存活率的影响

IF 0.7 4区农林科学

Journal of Swine Health and Production Pub Date : 2021-05-01 DOI: 10.54846/jshap/1214

S. Dee, Apoorva Shah, R. Cochrane, Fangzhou We, T. Clement, Aaron Singrey, R. Edler, G. Spronk, M. Niederwerder, E. Nelson

引用次数: 1