المؤلفون: Harmon, Jay D., Levis, Donald G.

المصدر: Agricultural and Biosystems Engineering Extension and Outreach Publications

مصطلحات موضوعية: Agricultural Education, Agriculture, Bioresource and Agricultural Engineering

وصف الملف: application/pdf

Relation: https://lib.dr.iastate.edu/abe_eng_extensionpubs/2; https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1001&context=abe_eng_extensionpubs

الاتاحة: https://lib.dr.iastate.edu/abe_eng_extensionpubs/2
https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1001&context=abe_eng_extensionpubs

المؤلفون: Levis, Donald G., Johnson,, Rodger K., Rathje, Thomas A., Osorio, Fernando A.

المصدر: Faculty Papers and Publications in Animal Science

مصطلحات موضوعية: Animal Sciences, Genetics and Genomics, Meat Science

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/animalscifacpub/1270; https://digitalcommons.unl.edu/context/animalscifacpub/article/2266/viewcontent/Levis_NPBRR_2009_Predictors_of_response_and_genetic_resistance.pdf

الاتاحة: https://digitalcommons.unl.edu/animalscifacpub/1270
https://digitalcommons.unl.edu/context/animalscifacpub/article/2266/viewcontent/Levis_NPBRR_2009_Predictors_of_response_and_genetic_resistance.pdf

المؤلفون: Reicks, D. L., Levis, Donald G.

المصدر: Faculty Papers and Publications in Animal Science

مصطلحات موضوعية: boar semen, artificial insemination, insemination dose, fertility, bacteria, Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/animalscifacpub/695; https://digitalcommons.unl.edu/context/animalscifacpub/article/1707/viewcontent/Levis_THERIOGEN_2008_Fertility_of_semen__DC_VERSION.pdf

الاتاحة: https://digitalcommons.unl.edu/animalscifacpub/695
https://digitalcommons.unl.edu/context/animalscifacpub/article/1707/viewcontent/Levis_THERIOGEN_2008_Fertility_of_semen__DC_VERSION.pdf

المؤلفون: Levis, Donald G., Reicks, Darwin L.

المصدر: Theriogenology ; volume 63, issue 2, page 630-642 ; ISSN 0093-691X

الاتاحة: http://dx.doi.org/10.1016/j.theriogenology.2004.09.037
https://api.elsevier.com/content/article/PII:S0093691X04003292?httpAccept=text/xml
https://api.elsevier.com/content/article/PII:S0093691X04003292?httpAccept=text/plain

المؤلفون: Levis, Donald G, Burroughs, Scott, Williams, Sara

المصدر: Faculty Papers and Publications in Animal Science

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/animalscifacpub/618; https://digitalcommons.unl.edu/context/animalscifacpub/article/1630/viewcontent/Levis_2002_AIintrauterineDL_1.pdf

الاتاحة: https://digitalcommons.unl.edu/animalscifacpub/618
https://digitalcommons.unl.edu/context/animalscifacpub/article/1630/viewcontent/Levis_2002_AIintrauterineDL_1.pdf

المؤلفون: Levis, Donald G.

المصدر: Nebraska Swine Reports

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/coopext_swine/114; https://digitalcommons.unl.edu/context/coopext_swine/article/1113/viewcontent/Levis.pdf

الاتاحة: https://digitalcommons.unl.edu/coopext_swine/114
https://digitalcommons.unl.edu/context/coopext_swine/article/1113/viewcontent/Levis.pdf

المؤلفون: Newth, Mary Sue, Levis, Donald G.

المصدر: Nebraska Swine Reports

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/coopext_swine/134; https://digitalcommons.unl.edu/context/coopext_swine/article/1133/viewcontent/Newth.pdf

الاتاحة: https://digitalcommons.unl.edu/coopext_swine/134
https://digitalcommons.unl.edu/context/coopext_swine/article/1133/viewcontent/Newth.pdf

المؤلفون: Levis, Donald G., Leibbrandt, Vernon D, Rozeboom, Dale W

المصدر: Faculty Papers and Publications in Animal Science

مصطلحات موضوعية: Gilt, Boar, Reproduction, Development, Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/animalscifacpub/619; https://digitalcommons.unl.edu/context/animalscifacpub/article/1631/viewcontent/Levis_PIH_1997_Development_gilts.pdf

الاتاحة: https://digitalcommons.unl.edu/animalscifacpub/619
https://digitalcommons.unl.edu/context/animalscifacpub/article/1631/viewcontent/Levis_PIH_1997_Development_gilts.pdf

المؤلفون: Levis, Donald G.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: lactation, length, effect, sow, sow reproductive performance, reproductive performance, weaning pigs, sows, boars, gilts, weaning-to-estrus, estrus, weaning, parities, genetic lines, pigs, swine, agriculture, animal science, Extension publications, Curriculum and Instruction

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/1376; https://digitalcommons.unl.edu/context/extensionhist/article/2372/viewcontent/ec97_275.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/1376
https://digitalcommons.unl.edu/context/extensionhist/article/2372/viewcontent/ec97_275.pdf

المؤلفون: Levis, Donald G.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: management strategies, strategies, pen-mating, female pigs, sows, pigs, swine, pork production, estrus, managers, boars, farrowing, farrowing rate, live pigs, animal science, agriculture, Extension publications, Curriculum and Instruction

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/1375; https://digitalcommons.unl.edu/context/extensionhist/article/2373/viewcontent/ec97_276.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/1375
https://digitalcommons.unl.edu/context/extensionhist/article/2373/viewcontent/ec97_276.pdf

المؤلفون: Levis, Donald G.

المصدر: Nebraska Swine Reports

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/coopext_swine/204; https://digitalcommons.unl.edu/context/coopext_swine/article/1205/viewcontent/Levis.pdf

الاتاحة: https://digitalcommons.unl.edu/coopext_swine/204
https://digitalcommons.unl.edu/context/coopext_swine/article/1205/viewcontent/Levis.pdf

المؤلفون: Levis, Donald G., Gilmore, Charlie, Bodman, Gerald R.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: spring-loaded, gate latch, design, swine, breeding, facilities, floor plans, breeding pen, catch plate, solid shaft, artificial insemination facility, boars, gate, pork, livestock breeding, farm buildings, pens, enclosures, livestock confinement, hardware, fencing, latches, latching, Agriculture, Curriculum and Instruction

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/604; https://digitalcommons.unl.edu/context/extensionhist/article/1603/viewcontent/G96_1287.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/604
https://digitalcommons.unl.edu/context/extensionhist/article/1603/viewcontent/G96_1287.pdf

المؤلفون: Levis, Donald G., Paterson, Andrew, Payne, Hugh

المصدر: Nebraska Swine Reports

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/coopext_swine/188; https://digitalcommons.unl.edu/context/coopext_swine/article/1187/viewcontent/Levis.pdf

الاتاحة: https://digitalcommons.unl.edu/coopext_swine/188
https://digitalcommons.unl.edu/context/coopext_swine/article/1187/viewcontent/Levis.pdf

المؤلفون: Levis, Donald G., Hemsworth, Paul H.

المصدر: Nebraska Swine Reports

مصطلحات موضوعية: Animal Sciences

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/coopext_swine/168; https://digitalcommons.unl.edu/context/coopext_swine/article/1169/viewcontent/Levis.pdf

الاتاحة: https://digitalcommons.unl.edu/coopext_swine/168
https://digitalcommons.unl.edu/context/coopext_swine/article/1169/viewcontent/Levis.pdf

المؤلفون: Brady, Scott, Wolverton, Doyle R., Levis, Donald G., Brumm, Michael C.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: University of Nebraska, Cooperative Extension, publications, Nebraska Cooperative Extension, swine, identification, pig, ear, notch, litter, Agriculture, Curriculum and Instruction

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/1125; https://digitalcommons.unl.edu/context/extensionhist/article/2116/viewcontent/NF93_113.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/1125
https://digitalcommons.unl.edu/context/extensionhist/article/2116/viewcontent/NF93_113.pdf

المؤلفون: Levis, Donald G.

المصدر: Veterinary Clinics of North America: Food Animal Practice ; volume 8, issue 3, page 517-532 ; ISSN 0749-0720

الاتاحة: http://dx.doi.org/10.1016/s0749-0720(15)30701-5
https://api.elsevier.com/content/article/PII:S0749072015307015?httpAccept=text/xml
https://api.elsevier.com/content/article/PII:S0749072015307015?httpAccept=text/plain

المؤلفون: Brumm, M. C., Mohrmann, Jan, Bitney, Larry L., Fedorka-Cray, Paula J., Srikumaran, Pushpa, Breisch, Sally A., Weiss, Steven J., Anderson, Gary A., Levis, Donald G., Reese, Duane, Gama, Luis, Naber, Clyde, Radke, Terry, Clemens, Edd, Zalesky, Alyce, Schulte, Dennis, Bodman, Gerald R., Milanuk, Marcus, Shelton, David P., Hancock, Joe D., Peo, E.R., Lewis, Austin J., Giesemann, Mark A., Chiba, Lee I., Louis, Gary F., Weldon, William C., Knox, Robert V., Danielson, Murray, Ahlschwede, William, Johnson, Rodger K., Eckardt, Gregg

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: EC90-219, Nebraska Swine Report, breeding, disease control, disease, nutrition, economics, housing, animal science, extension, teaching, research, swine, pigs, pork, sows, gilts, boars, piglets, vaccines, wet/dry, casein, soyprotein, nipple waterers, growing-finishing pigs, G-F pigs, SPF, soybeans, salinomycin, amino acids

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/2056; https://digitalcommons.unl.edu/context/extensionhist/article/3057/viewcontent/ec90_219.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/2056
https://digitalcommons.unl.edu/context/extensionhist/article/3057/viewcontent/ec90_219.pdf

المؤلفون: Levis, Donald G.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات الفهرس: management, replacement, gilts, efficient reproduction, reproduction, selecting gilts, weaning, birth, floor space, rearing mates, ear-notching gilts, litter, notches, swine, publications, agriculture, animal science, Extension publications, Agriculture, Curriculum and Instruction, text

URL: http://digitalcommons.unl.edu/extensionhist/1377
http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=2371&context=extensionhist

المؤلفون: Levis, Donald G., Hogg, Alex

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: extension circular, ec 89-1908, Swine, reproductive, problems, noninfectious, diseases

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/4653; https://digitalcommons.unl.edu/context/extensionhist/article/5663/viewcontent/EC_89_1908_TN.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/4653
https://digitalcommons.unl.edu/context/extensionhist/article/5663/viewcontent/EC_89_1908_TN.pdf

المؤلفون: Levis, Donald G.

المصدر: Historical Materials from University of Nebraska-Lincoln Extension

مصطلحات موضوعية: extension circular, ec 89-264B, artificial, insemination, Swine

وصف الملف: application/pdf

Relation: https://digitalcommons.unl.edu/extensionhist/4648; https://digitalcommons.unl.edu/context/extensionhist/article/5648/viewcontent/EC_89_264B_TN.pdf

الاتاحة: https://digitalcommons.unl.edu/extensionhist/4648
https://digitalcommons.unl.edu/context/extensionhist/article/5648/viewcontent/EC_89_264B_TN.pdf