2022 Iowa State University Animal Industry Report最新文献

{"title":"Do Mexican TN-Visa swine caretakers’ euthanasia attitudes differ by age?","authors":"Jacob K Yarian, B. Skaar, Anna K. Johnson, K. Stalder, J. Ross, S. Millman, M. Pairis-Garcia, I. Robles, A. Arruda, Cassandra Jass","doi":"10.31274/air.14474","DOIUrl":"https://doi.org/10.31274/air.14474","url":null,"abstract":"Currently, Hispanic and Latino caretakers makeup 17.2% of the total animal production and aquaculture workforce in the UnitedStates (U.S.). Yet, littleis known about swine euthanasia attitudes as it relates to age demographics. The objective of this project was to investigate if there wereeuthanasia attitudinal differences between ≤ 30 yr and > 30 yr swinecaretakers on a TN-visa from Mexico working on a commercial sow farm. An online Qualtrics survey was delivered in Spanish language andcompleted by 40 caretakers (n= 20 ≤ 30 yr and n = 20 > 30 yr). Eligiblerespondents were swine caretakers on a Trade NAFTA (TN) visa and who spoke andread Spanish as their first language. Results will be presented descriptively. The majority of caretakerswere male (63%), and98% had received a higher education, with 55% never euthanizing an animal priorto this job. Average residency in the U.S. was 3.1 yr. Regardless of caretaker age,all reported to being confident, knowledgeable, could make decisions, and werecomfortable in performing euthanasia. Furthermore, there were no differenceswhen euthanasia was being considered on an adult pig versus a neonatal piglet. Inconclusion, these results suggest pigs and piglets are likely to receive timelyand humane euthanasia to alleviate suffering on-farm regardless of caretakerage that are on a TN-visa from Mexico.","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126643159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Nutritional Enrichment on Pig Feeder Aggression and Performance During Early Weaning","authors":"Grace Mercer, Emiline R. Sundman, C. Stambuk, N. Gabler, K. Stalder, Anna K. Johnson, L. Karriker, S. Millman","doi":"10.31274/air.13898","DOIUrl":"https://doi.org/10.31274/air.13898","url":null,"abstract":"The objective of this experiment was to evaluate the effect of a novel nutritional “biscuit” on weaned pig feeder aggression and performance. Eighty mixed-sex pigs, 19 to 24 days of age, were randomly allocated to 8 pens (10 pigs/pen). Pens were assigned 1 of 4 treatments: (1) biscuit with fecal semiochemical attractant, (2) biscuit with sugary attractant, (3) biscuit with no attractant (positive control), and (4) no biscuit (negative control). Each pen received 4 biscuits suspended from 2 ropes at the feeder for the first 7 days after weaning. Pig aggressive behavior at the feeder was recorded. Descriptive data including frequency (number) and duration (seconds) of aggressive interactions, average daily gain, average daily feed intake, and fecal score were evaluated. The negative control treatment had less feeder aggression than the enrichment treatments. On average, duration of aggression events around the feeder between all treatments was 1 second with the range from < 1 second to 21 seconds. During the first 4 days, the pens of pigs receiving the positive control treatment consumed the most feed when compared to other treatments. Overall, providing pigs the biscuit enrichment at the feeder did not result in increased pig removal due to aggressive interactions. Additionally, pens of pigs that were provided a biscuit enrichment with no attractant had the most promising early daily feed intake. At a time where consumers are asking questions concerning the pig’s quality of life and enriching their living environment, providing biscuit in the feeders within each pen of pigs may be a way to provide pigs an enhanced living environment. ","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122127919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Undergraduate Certificate in Dairy Cattle Production Management","authors":"Christen G. Jackson, J. Bundy, E. Huff-Lonergan, J. Sterle, J. Cunnick, Laura L Greiner, E. Bobeck, N. Gabler, S. Lonergan","doi":"10.31274/air.14491","DOIUrl":"https://doi.org/10.31274/air.14491","url":null,"abstract":"Iowa State University (ISU) offers undergraduate certificates to demonstrate completion of a curriculum in a specialized area across various disciplines.  The certificate has the significant benefit of allowing students to customize their curriculum and document the completion of an approved course of study.  A Dairy Cattle Production Management Certificate is offered within the Animal Science Department at ISU.  The certificate requirements are organized to correspond with faculty and employer-defined needs for a successful transition from ISU student to dairy cattle industry professional. The Dairy Cattle Production Management certificate will integrate technical topics in animal science with practical considerations in enterprise management.  Two critical components to the certificate are completing either the Dairy Systems Management course or the Applied Dairy Farm Management course and a required internship that focuses on dairy cattle production management.  Students that complete the certificate will have the background to identify and address challenges in modern dairy cattle production enterprises.  Further, the certificate assists employers in identifying students that have shown the interest, discipline, and ability to complete this specialized study program.  The @font-face{font-family:\"Cambria Math\";panose-1:2 4 5 3 5 4 6 3 2 4;mso-font-charset:0;mso-generic-font-family:roman;mso-font-pitch:variable;mso-font-signature:-536870145 1107305727 0 0 415 0;}@font-face{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;mso-font-charset:0;mso-generic-font-family:swiss;mso-font-pitch:variable;mso-font-signature:-536859905 -1073732485 9 0 511 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal{mso-style-unhide:no;mso-style-qformat:yes;mso-style-parent:\"\";margin:0in;mso-pagination:widow-orphan;font-size:12.0pt;font-family:\"Calibri\",sans-serif;mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:\"Times New Roman\";mso-bidi-theme-font:minor-bidi;}.MsoChpDefault{mso-style-type:export-only;mso-default-props:yes;font-family:\"Calibri\",sans-serif;mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:\"Times New Roman\";mso-bidi-theme-font:minor-bidi;}div.WordSection1{page:WordSection1;} @font-face{font-family:\"Cambria Math\";panose-1:2 4 5 3 5 4 6 3 2 4;mso-font-charset:0;mso-generic-font-family:roman;mso-font-pitch:variable;mso-font-signature:-536870145 1107305727 0 0 415 0;}@font-face{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;mso-font-charset:0;mso-generic-font-family:swiss;mso-font-pitch:variable;mso-font-signature:-536859905 -1073732485 9 0 511 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal{mso-style-unhide:no;mso-style-qformat:yes;mso-styl","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116878319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Do Mexican TN-Visa swine caretakers’ euthanasia attitudes differ if they are male or female?","authors":"Jacob K Yarian, B. Skaar, Anna K. Johnson, K. Stalder, J. Ross, S. Millman, M. Pairis-Garcia, I. Robles, Cassandra Jass","doi":"10.31274/air.14475","DOIUrl":"https://doi.org/10.31274/air.14475","url":null,"abstract":"Currently, Hispanic and Latino caretakers makeup 17.2% of the total animal production and aquaculture workforce in the United States (U.S.). Yet, little is known about swine euthanasia attitudes between male and female caretakers. The objective of this project was to investigate if there were euthanasia attitudinal differences between male and female swine caretakers on a TN-visa from Mexico working on a commercial sow farm. An online Qualtrics survey was delivered in Spanish language and completed by 32 participants (16 males and 16 females). Eligible respondents were swine caretakers on a Trade NAFTA (TN) visa who spoke and read Spanish as their first language. Results will be presented descriptively. Caretaker mean average age was 32 yr (range 24 to 53 yr), and 97% had received a higher education, with 62% never euthanizing an animal prior to working with pigs. Average time living in the U.S. was 2.8 yr. Regardless of caretaker sex, all caretakers reported being confident, knowledgeable, could make decisions, and were comfortable in performing euthanasia. Furthermore, there were no differences when euthanasia was being considered for an adult pig versus a neonatal piglet. In conclusion, these results suggest pigs and piglets are likely to receive timely and humane euthanasia to alleviate suffering on-farm by male and female swine caretakers on a TN-visa from Mexico.","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131268783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating rotations of winter annual and summer annual forages for yield, nutritional value, and economic sustainability as forage resources for beef cattle in northern Iowa","authors":"Denise L. Schwab, Josh Michel, Betsy Reynolds, K. Pecinovsky","doi":"10.31274/air.13905","DOIUrl":"https://doi.org/10.31274/air.13905","url":null,"abstract":"A winter annual/summer annual forage system can be used to break up the traditional corn/soybean rotation and produce 6-7 tons of forage feed on a dry matter basis. Because these are all grass forages, they tend to respond positively to additional nitrogen fertilizer with increased dry matter yields, crude protein and energy levels.","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128274308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of direct fed microbial supplementation in late lay hen egg production and egg quality","authors":"Claudia DeLeon, Maddison L. Wiersema, D. Koltes","doi":"10.31274/air.13903","DOIUrl":"https://doi.org/10.31274/air.13903","url":null,"abstract":"Egg production and quality decrease with hen age and/or prolonged production cycles. Strategies to prevent this decline are important as it allows egg producers to continue to produce a safe and high-quality product for consumers while keeping costs minimal. One strategy to improve egg production and egg quality during late lay is through feed supplementation.  This study explored supplementation of late lay (60 + weeks of age) hens with a Bacillus subtilis strain in the feed.  Compared to hens that remained on the non-supplemented feed from the same flock, hens supplemented with Bacillus subtilis had increased egg production as measured by hen day egg production and egg weight. However, supplementation did not alter hen mortality, body weight, feed conversion ratio, and egg quality.","PeriodicalId":448382,"journal":{"name":"2022 Iowa State University Animal Industry Report","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117150887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}