Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-180814-361
J. Bundy, J. Sterle
{"title":"Academic Advising Strategies to Support Undergraduate Student Success","authors":"J. Bundy, J. Sterle","doi":"10.31274/ANS_AIR-180814-361","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-361","url":null,"abstract":"","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"58 1","pages":"76"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81052190","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}
Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-180814-376
E. N. Amuzu-Aweh, M. Walugembe, B. Kayang, A. Muhairwa
Recommended Citation Amuzu-Aweh, Esinam Nancy; Walugembe, Muhammed; Kayang, Boniface Baboreka; and Muhairwa, Amandus Pachificus (2018) "Genetic Parameters and Genomic Regions Associated with Growth Rate and Response to Newcastle Disease in Local Chicken Ecotypes in Ghana and Tanzania," Animal Industry Report: AS 664, ASL R3260. DOI: https://doi.org/10.31274/ans_air-180814-376 Available at: https://lib.dr.iastate.edu/ans_air/vol664/iss1/58
{"title":"Genetic Parameters and Genomic Regions Associated with Growth Rate and Response to Newcastle Disease in Local Chicken Ecotypes in Ghana and Tanzania","authors":"E. N. Amuzu-Aweh, M. Walugembe, B. Kayang, A. Muhairwa","doi":"10.31274/ANS_AIR-180814-376","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-376","url":null,"abstract":"Recommended Citation Amuzu-Aweh, Esinam Nancy; Walugembe, Muhammed; Kayang, Boniface Baboreka; and Muhairwa, Amandus Pachificus (2018) \"Genetic Parameters and Genomic Regions Associated with Growth Rate and Response to Newcastle Disease in Local Chicken Ecotypes in Ghana and Tanzania,\" Animal Industry Report: AS 664, ASL R3260. DOI: https://doi.org/10.31274/ans_air-180814-376 Available at: https://lib.dr.iastate.edu/ans_air/vol664/iss1/58","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"20 1","pages":"774"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86128876","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}
Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-180814-402
K. Fries, E. Bobeck
{"title":"Evaluation of a High Protein DDGS Product on Broiler Performance","authors":"K. Fries, E. Bobeck","doi":"10.31274/ANS_AIR-180814-402","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-402","url":null,"abstract":"","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"39 1","pages":"56"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87223447","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}
Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-180814-349
K. Fries, E. Bobeck
Changes to the production method of distiller’s dried grains with solubles (DDGS), a common feedstuff in poultry diets, can alter the nutrient profile and energy content. Estimates of DDGS digestibility vary as a result of the altered production method, removal of value-added products like distiller’s corn oil, as well as the strain of chicken used (broiler vs. layer). The objective of this study was to determine the energy digestibility of high protein DDGS (HiP DDGS) fed to straight-run Cobb 500 broiler chickens. The apparent nitrogen-corrected metabolizable energy of HiP DDGS was calculated at 2,710 kcal/kg. Additional research is needed to further illustrate the influence of production method on HiP DDGS feeding value in broiler chickens.
{"title":"Energy Digestibility of a High Protein DDGS Product in Broilers","authors":"K. Fries, E. Bobeck","doi":"10.31274/ANS_AIR-180814-349","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-349","url":null,"abstract":"Changes to the production method of distiller’s dried grains with solubles (DDGS), a common feedstuff in poultry diets, can alter the nutrient profile and energy content. Estimates of DDGS digestibility vary as a result of the altered production method, removal of value-added products like distiller’s corn oil, as well as the strain of chicken used (broiler vs. layer). The objective of this study was to determine the energy digestibility of high protein DDGS (HiP DDGS) fed to straight-run Cobb 500 broiler chickens. The apparent nitrogen-corrected metabolizable energy of HiP DDGS was calculated at 2,710 kcal/kg. Additional research is needed to further illustrate the influence of production method on HiP DDGS feeding value in broiler chickens.","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"1 1","pages":"55"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91257062","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}
Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-190411-001
J. Sterle
{"title":"Iowa State University Department of Animal Science Undergraduate Teaching Update","authors":"J. Sterle","doi":"10.31274/ANS_AIR-190411-001","DOIUrl":"https://doi.org/10.31274/ANS_AIR-190411-001","url":null,"abstract":"","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"12 1","pages":"80"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82713044","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}
Pub Date : 2018-01-01DOI: 10.31274/ANS_AIR-180814-511
Claire E. Andresen, P. Gunn
This study evaluated the effect of extended-release eprinomectin on production parameters and reproductive success of yearling fall replacement heifers. Heifers were treated with an ivermectin (CONV) or an injectable extended-release eprinomectin (EPR). There were no differences between treatments at initial body weight (BW). However, subsequent body weights taken 7 months and 12-months post-treatment demonstrated heavier body weight, greater overall weight gain and a greater average daily gain for heifers treated with EPR. Heifers treated with EPR had greater pregnancy rates to AI and greater overall pregnancy rates than CONV. Also, a greater proportion of EPR heifers calved in the first 21 days of the subsequent calving season. Results from this study indicate improved performance and greater reproductive success for replacement heifers treated with extended-release eprinomectin.
{"title":"Effects of Extended-release Eprinomectin on Replacement Heifer Performance and Reproductive Success","authors":"Claire E. Andresen, P. Gunn","doi":"10.31274/ANS_AIR-180814-511","DOIUrl":"https://doi.org/10.31274/ANS_AIR-180814-511","url":null,"abstract":"This study evaluated the effect of extended-release eprinomectin on production parameters and reproductive success of yearling fall replacement heifers. Heifers were treated with an ivermectin (CONV) or an injectable extended-release eprinomectin (EPR). There were no differences between treatments at initial body weight (BW). However, subsequent body weights taken 7 months and 12-months post-treatment demonstrated heavier body weight, greater overall weight gain and a greater average daily gain for heifers treated with EPR. Heifers treated with EPR had greater pregnancy rates to AI and greater overall pregnancy rates than CONV. Also, a greater proportion of EPR heifers calved in the first 21 days of the subsequent calving season. Results from this study indicate improved performance and greater reproductive success for replacement heifers treated with extended-release eprinomectin.","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"49 1","pages":"9"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88476435","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}
Pub Date : 2017-03-23DOI: 10.31274/ans_air-180814-290
W. M. Rauw, J. Lozano, S. Lei, J. Patience, N. Gabler, S. Lonergan, J. Dekkers, L. Baumgard
Implications Hot temperatures negatively impact global livestock production and are a serious financial burden to pig producers. Trends predict that global temperatures will continue to increase, making this a pertinent issue now and in the future. Study objectives were to investigate the effects of genetics and dietary fiber content on growth, feed intake, and feed conversion efficiency in response to repeated exposure to heat stress. A total of 103 finishing barrows from a contemporary commercial line and Yorkshire lines divergently selected for high and low feed efficiency based on residual feed intake ( RFI ) were used in this experiment. All pigs were subjected three consecutive times to a 4-d heat stress ( HS ) load, starting with a 19-d thermal neutral ( TN ) adaptation period and alternated by 7-d TN conditions (see Figure 1). Feed intake, growth and feed conversion efficiency were measured for each period. Heat stress negatively impacted all three production traits, however, pigs from the commercial line were most affected. In addition, during heat stress, pigs from the low RFI (= more efficient) line lost their advantage in feed conversion efficiency over pigs from the high RFI line. This supports the hypothesis that pigs with a high genetic propensity for lean tissue accretion are more susceptible to heat stress. However, our results also indicated that the effect of heat stress on feed intake, growth rate, and feed conversion efficiency was not significantly influenced by the amount of fiber in the diet (at constant energy density).
高温对全球畜牧业生产产生负面影响，对养猪生产者造成严重的经济负担。趋势预测，全球气温将继续上升，这使其成为现在和未来的一个相关问题。本研究旨在探讨遗传和饲粮纤维含量对反复热应激下肉鸡生长、采食量和饲料转化率的影响。本试验选用现代商品品系和约克郡品系的103头育肥猪，根据剩余采食量(RFI)分别选择高、低饲料效率。所有猪连续3次接受4 d热应激负荷，从19 d热中性(TN)适应期开始，交替进行7 d TN适应期(见图1)。每个阶段测量采食量、生长和饲料转化率。热应激对所有三个生产性状都有负面影响，但商品品系的猪受影响最大。此外，在热应激期间，来自低RFI(更高效率)品系的猪在饲料转化效率方面失去了来自高RFI品系的猪的优势。这支持了一个假设，即瘦肉组织增加的高遗传倾向的猪更容易受到热应激的影响。然而，我们的结果也表明，热应激对采食量、生长率和饲料转化率的影响不受日粮中纤维含量的显著影响(在恒定能量密度下)。
{"title":"Effects of Diet and Genetics on Production Traits in Response to Repeated Exposure to Heat Stress in Pigs","authors":"W. M. Rauw, J. Lozano, S. Lei, J. Patience, N. Gabler, S. Lonergan, J. Dekkers, L. Baumgard","doi":"10.31274/ans_air-180814-290","DOIUrl":"https://doi.org/10.31274/ans_air-180814-290","url":null,"abstract":"Implications Hot temperatures negatively impact global livestock production and are a serious financial burden to pig producers. Trends predict that global temperatures will continue to increase, making this a pertinent issue now and in the future. Study objectives were to investigate the effects of genetics and dietary fiber content on growth, feed intake, and feed conversion efficiency in response to repeated exposure to heat stress. A total of 103 finishing barrows from a contemporary commercial line and Yorkshire lines divergently selected for high and low feed efficiency based on residual feed intake ( RFI ) were used in this experiment. All pigs were subjected three consecutive times to a 4-d heat stress ( HS ) load, starting with a 19-d thermal neutral ( TN ) adaptation period and alternated by 7-d TN conditions (see Figure 1). Feed intake, growth and feed conversion efficiency were measured for each period. Heat stress negatively impacted all three production traits, however, pigs from the commercial line were most affected. In addition, during heat stress, pigs from the low RFI (= more efficient) line lost their advantage in feed conversion efficiency over pigs from the high RFI line. This supports the hypothesis that pigs with a high genetic propensity for lean tissue accretion are more susceptible to heat stress. However, our results also indicated that the effect of heat stress on feed intake, growth rate, and feed conversion efficiency was not significantly influenced by the amount of fiber in the diet (at constant energy density).","PeriodicalId":7812,"journal":{"name":"Animal Industry Report","volume":"34 1","pages":"67"},"PeriodicalIF":0.0,"publicationDate":"2017-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74953210","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}
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