Zobrazeno 1 - 7 of 7 pro vyhledávání: '"Jeff S Heldt"'
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Effect of zinc source and concentration and chromium supplementation on performance and carcass characteristics in feedlot steers1,2,3
Autor: John J. Wagner, K. Sellins, K.E. Lloyd, Terry E Engle, A. Budde, Jerry W. Spears, Jeff S Heldt
Publikováno v: Journal of Animal Science. 97:1286-1295
Four hundred crossbred steers were used in a randomized complete block design to investigate the effects of supplemental Zn source and concentration, and dietary Cr on performance and carcass characteristics of feedlot steers fed a steam-flaked corn-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::341d9c5346ef92cbaccdadcf71627c3e
https://doi.org/10.1093/jas/skz016
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3
Effects of varying sources of Cu, Zn, and Mn on mineral status and preferential intake of salt-based supplements by beef cows and calves and rainfall-induced metal loss
Autor: Juliana Ranches, Jeff S Heldt, Henrique Jorge Fernandes, Maria L. Silveira, Luana S Caramalac, John D. Arthington
Publikováno v: Translational Animal Science
Three studies were completed to evaluate the effects of Cu, Zn, and Mn source on preferential intake, trace mineral status, and rainfall-induced metal loss of salt-based mineral supplements. Mineral supplements were formulated to contain 2,500, 5,500
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::201855519e93b35b8dde276004d93db1
https://pubmed.ncbi.nlm.nih.gov/34041445
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4
205 Effect of supplemental trace mineral source on performance, health, and carcass characteristics in finishing beef steers
Autor: Alyssa B Word, Kendall Karr, Ben Holland, Jeff S Heldt
Publikováno v: J Anim Sci
Crossbred beef steers (n = 2,420; 357 ± 16 kg BW) were used to evaluate the effects of supplemental trace mineral sources on the performance and carcass characteristics on feedlot cattle. Steers were housed in 20 pens (120–125 steers per pen) with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6b4321a9b2b2382ef3d66a1c5a49d5a
https://europepmc.org/articles/PMC7703052/
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5
348 Effects of supplemental copper, zinc, and manganese source on growth performance and carcass characteristics of finishing beef steers
Autor: Jeff S Heldt, Shane Davis
Publikováno v: J Anim Sci
The objective of this study was to determine if different sources and levels of supplemental copper (Cu), zinc (Zn), and manganese (Mn) affect growth performance, health and carcass characteristics of finishing beef steers. A large pen, commercial fe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2926b8caba6493e15c3d6309c16471d3
https://europepmc.org/articles/PMC6666821/
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6
401 Effect of zinc source and ractopamine hydrochloride on the growth performance and carcass characteristics of steers fed in confinement to harvest
Autor: Jeff S Heldt, William T Nelson, S.B. Laudert, Terry E Engle, John Wagner, Jerry W. Spears
Publikováno v: J Anim Sci
Four hundred and thirty-two beef steers (346.3 ± 63.7 kg BW) were used to determine the effects of Zn source on feedlot cattle fed ractopamine hydrochloride. Cattle were blocked in groups of 54 by BW and housed in 48 pens containing 9 steers per pen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d25b48d26d907ab1ab53f8d9f0bdef
https://doi.org/10.1093/jas/skz258.329
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