Animal Industry Report最新文献_第10页

Relationship between Mid-First Lactation Feed Efficiency and Late First and Early Second Lactation Body Condition Score 初泌中期饲料效率与初泌后期和初泌体况评分的关系

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-367

L. Hardie, K. Maxwell, D. Spurlock

引用次数: 0

ANS 490-A: Ewe Lamb’sTemperament and Effects on Maze Entry, Exit Order and Coping Styles When Exposed to Novel Stimulus 新刺激条件下母羊的气质及其对迷宫进入、退出顺序和应对方式的影响

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-394

Emily Strong, S. Azarpajouh, Benjamin Drescher, Anna K. Johnson, D. Morrical

{"title":"ANS 490-A: Ewe Lamb’sTemperament and Effects on Maze Entry, Exit Order and Coping Styles When Exposed to Novel Stimulus","authors":"Emily Strong, S. Azarpajouh, Benjamin Drescher, Anna K. Johnson, D. Morrical","doi":"10.31274/ANS_AIR-180814-394","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-394","url":null,"abstract":"The objectives of this experiment were (1) to determine if experience affects maze entrance and exit order and (2) how temperament affects ewe lamb coping response to a predictable novel stimulus. A total of nine, ~4-month-old blackface Hampshire-cross ewe lambs, BW~18 to 27 kg were used. Ewe lamb temperament was identified and three groups of ewe lambs were created. Each group had a BOLD, MODERATE and SHY ewe lamb. All ewe lambs were introduced and habituated to the maze for four consecutive days (days -3 to day 0), respectively. On trial day 1, Group 1 (EXPERIENCED) passed through the maze. On trial day 2, Groups 1 and 2 (MIDDLE) passed through the maze. On trial day 3, Groups 1, 2 and 3 (NAÏVE) passed through the maze. Over these trial days, ewe lambs were exposed to a red ball and a red flag (novel stimuli). Behavioral measures (order to enter and exit the maze and coping style [active vs passive]) were collected over four habituation days (-3, -2, -1 and 0), and over three trial days (1, 2 and 3), respectively. The data will be presented descriptively. Ewe lamb 1936 had the highest number of cone touches, with 1943 having the least over the 1-h observation period. For the BOLD group the cone touches ranged from 7 to 10, MODERATE ranged from 5 to 6 and SHY ranged from 0 to 4 respectively. Over all entry days a BOLD ewe lamb entered and exited the maze first, but it was not always the same BOLD ewe lamb. There was no consistent ewe lamb order for entering or exiting the maze for MODERATE or SHY temperament classification. Ewe lambs for both stimuli engaged in a passive coping style (77.8%). In conclusion, ewe lambs, regardless of temperament, did not react negatively to a novel stimuli. Furthermore, experience to the maze did not affect entrance and exit order and all ewe lambs navigated the maze in less than 15-seconds over all trial days. We predict that this behavioral reactivity would enable producers to handle ewe lambs effectively in a handling system for necessary husbandry practices without undue animal welfare issues. Introduction Fear, anxiety, and stress are affective states observed in cattle, swine, poultry, and sheep. An animal can react in three ways when placed in a novel or unfamiliar environment: 1) fear, 2) flight or 3) freeze. Animal fear can be tested using many methodologies. These methodologies can differ to include, for example, the number of animals being tested, the type of testing arena and the novel stimuli used. During fear tests, behavior is often measured to determine how fearful a prescribed set of circumstances are. Primary behavioral indicators of fear include active defense reactions such as attack and threaten, active avoidance reactions such as hiding and escaping, and movement inhibition. Activity level often is dependent on the emotional intensity of the threat. During a low threat, such as those presented by fear tests, increased activity has been concluded to indicate a fearful animal. Sheep are flock a","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"12 1","pages":"55"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79017542","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}

引用次数: 0

The Effect of PRRS Viral Level and Isolate on Tonsil Gene Expression PRRS病毒水平及分离株对扁桃体基因表达的影响

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-299

Q. Dong, J. Lunney, Elyn Fritz-Waters, Y. Nguyen, B. Rowland, A. Hess, J. Reecy, J. Dekkers

引用次数: 3

Growth and Carcass Characteristics of Market Pigs Fed Reduced Lysine Diets in Bedded Hoop Barns 低赖氨酸饲粮对层状环圈猪舍商品猪生长和胴体特性的影响

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-325

P. Lammers, D. Stender, Chris Beedle, M. Honeyman

引用次数: 0

Different Genetic Resistance Resulted in Distinct Response to Newcastle Disease Virus 不同的遗传抗性导致对新城疫病毒的不同反应

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-324

Jibin Zhang, M. Kaiser, Melissa S. Herrmann, R. Gallardo, D. Bunn, T. Kelly, J. Dekkers, Huaijun Zhou, S. Lamont

引用次数: 1

Progress Report: Effect of Stockpiling Initiation Method on Winter Forage Yield and Quality of Midwestern Cool-season Grass Pastures for Fall-calving Beef Cows 进度报告:开始备货方式对中西部冷季肉牛牧场冬季饲料产量和品质的影响

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-537

B. Stokes, J. Russell, P. Gunn, L. Schulz

{"title":"Progress Report: Effect of Stockpiling Initiation Method on Winter Forage Yield and Quality of Midwestern Cool-season Grass Pastures for Fall-calving Beef Cows","authors":"B. Stokes, J. Russell, P. Gunn, L. Schulz","doi":"10.31274/ANS_AIR-180814-537","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-537","url":null,"abstract":"An ongoing two-year trial is being conducted to evaluate the effects of three different methods of initiating forage stockpiling on the quality and mass of forage available over the winter months (October through January). Methods of initiating stockpiling were spring strip-grazing, summer strip-grazing, and summer hay harvest. Forage mass, nutritional, and weather data were input into a ration balancing program with supplemental feed provided to maintain a body condition score (BCS) of five throughout the winter for fall-calving beef cows. Partial budget models were used to evaluate costs associated with the different treatment methods and compared to a standard winter hay feeding regime in a drylot scenario. Spring strip-grazing generated the greatest stockpiled forage mass compared to all other treatments, but also had the lowest dry matter digestibility across sampling dates. There were no differences in crude protein (CP) content among different methods of initiation. The carrying capacity of drylot models was greatest but did not differ between stockpiling models. There was a tendency for drylot models to incur greater total costs ($/ac) than stockpile models. There were no statistical differences in total cost ($/ac) between models using stockpiled forage grazing by different methods of initiation and no statistical differences in gross ($/hd/d) or net ($/hd/d) costs across treatments. While spring strip-grazing resulted in greater forage mass, the quality of this forage was lower than summer treatments. With similar costs, the lower yields from summer stockpiling models (strip-grazing or hay harvest) could be compensated for by the higher nutritional quality of the forage.","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"33 1","pages":"15"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89862634","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}

引用次数: 0

Comparisonof an Experimental Teat Sealant vs. Commercial Dry Period Barrier Teat Sealant Dipon Teat Coverage Persistency and Teat Health 实验型乳腺密封胶与商业型干期屏障型乳腺密封胶的比较、乳腺覆盖、持久性和乳腺健康

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ans_air-180814-383

J. Juarez, L. Timms

引用次数: 0

Commercial Layer-type Chickens and Newcastle Disease Virus Infection:Toward Genetic Selection of More Resilient Chickens 商品蛋鸡与新城疫病毒感染:面向更有适应力的鸡的遗传选择

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ans_air-180814-356

K. Rowland, Huaijun Zhou, R. Gallardo, T. Kelly, J. Dekkers, S. Lamont

引用次数: 0

Does Gener Impact the Immune Response of Chicks 种属会影响雏鸡的免疫反应吗

Animal Industry Report Pub Date : 2017-01-01 DOI: 10.31274/ANS_AIR-180814-343

Melissa S. Herrmann, R. Gallardo, D. Bunn, T. Kelly, J. Dekkers