Jerry W Spears

Dietary copper supplementation modulates performance and lipid metabolism in meat goat kids

JOURNAL OF INTEGRATIVE AGRICULTURE, 22(1), 214–221.

INVITED REVIEW: Assessing trace mineral status in ruminants, and factors that affect measurements of trace mineral status

[Review of ]. APPLIED ANIMAL SCIENCE, 38(3), 252–267.

Trace mineral source influences digestion, ruminal fermentation, and ruminal copper, zinc, and manganese distribution in steers fed a diet suitable for lactating dairy cows

ANIMAL, 16(4).

Effects of supplemental zinc on ruminal fermentation in continuous cultures

Applied Animal Science, 37(1), 27–32.

Trace mineral source impacts rumen trace mineral metabolism and fiber digestion in steers fed a medium-quality grass hay diet

JOURNAL OF ANIMAL SCIENCE, 99(9).

Chromium propionate improves insulin sensitivity in horses following oral concentrate consumption

Spears, J. W., Siciliano, P., Pratt-Phillips, S., Lloyd, K., Goertzen, E., Krafka, K., … Rounds, W. (2020, November). JOURNAL OF ANIMAL SCIENCE, Vol. 98, pp. 88–88.

Chromium propionate increases insulin sensitivity in horses following oral and intravenous carbohydrate administration

JOURNAL OF ANIMAL SCIENCE, 98(4).

Influence of supplemental copper, manganese, and zinc source on reproduction, mineral status, and performance in a grazing beef cow-calf herd over a 2-year period

APPLIED ANIMAL SCIENCE, 36(5), 745–753.

Influence of trace mineral source on digestion, ruminal volatile fatty acid and soluble mineral on steers fed a dairy type diet balanced to meet requirements for a high producing lactating dairy cow

Guimaraes, O., Wagner, J., Spears, J., & Engle, T. (2020, November). JOURNAL OF ANIMAL SCIENCE, Vol. 98, pp. 133–133.

Research Note: Responses of growth performance, immune traits, and small intestinal morphology to dietary supplementation of chromium propionate in heat-stressed broilers

Poultry Science, 99(10), 5070–5073.

Ruminal microbiota mineral requirements to optimize performance on different diets

Spears, J. W. (2020, November). JOURNAL OF ANIMAL SCIENCE, Vol. 98, pp. 139–139.

The influence of trace mineral source on copper, manganese, and zinc binding strength to rumen digesta in cattle fed a high forage-based diet

Guimaraes, O., Loh, H. Y., Thorndykel, M. P., Tillquistl, N. M., Spears, J. W., & Engle, T. E. (2020, November). JOURNAL OF ANIMAL SCIENCE, Vol. 98, pp. 443–443.

The influence of trace minerals source on copper, manganese, and zinc binding strength to rumen digesta in cattle fed a corn silage-based diet

Guimaraes, O., Loh, H. Y., Thorndyke, M. P., Tillquist, N. M., Spears, J. W., & Engle, T. E. (2020, November). JOURNAL OF ANIMAL SCIENCE, Vol. 98, pp. 442–442.

Boron, Chromium, Manganese, and Nickel in Agricultural Animal Production

BIOLOGICAL TRACE ELEMENT RESEARCH, 188(1), 35–44.

Chromium propionate in broilers: human food and broiler safety

Poultry Science, 98(12), 6579–6585.

Effect of zinc source and concentration and chromium supplementation on performance and carcass characteristics in feedlot steers

JOURNAL OF ANIMAL SCIENCE, 97(3), 1286–1295.

Trace mineral source influences ruminal distribution of copper and zinc and their binding strength to ruminal digesta

JOURNAL OF ANIMAL SCIENCE, 97(4), 1852–1864.

Bioavailability of zinc hydroxychloride relative to zinc sulfate in growing cattle fed a corn-cottonseed hull-based diet

ANIMAL FEED SCIENCE AND TECHNOLOGY, 232, 1–5.

Chromium concentrations in ruminant feed ingredients

JOURNAL OF DAIRY SCIENCE, 100(5), 3584–3590.

Chromium propionate in broilers: effect on insulin sensitivity

POULTRY SCIENCE, 95(5), 1096–1104.

Dietary Iron Deficiency and Oversupplementation Increase Intestinal Permeability, Ion Transport, and Inflammation in Pigs

JOURNAL OF NUTRITION, 146(8), 1499–1505.

Effects of Supplemental Chromium Propionate on Serum Lipids, Carcass Traits, and Meat Quality of Heat-Stressed Broilers

Biological Trace Element Research, 176(2), 401–406.

History of chromium and its relationship to glucose metabolism

2016 Cornell Nutrition Conference for Feed Manufacturers, 1–8.

Effect of dietary copper amount and source on copper metabolism and oxidative stress of weanling pigs in short-term feeding

Huang, Y. L., Ashwell, M. S., Fry, R. S., Lloyd, K. E., Flowers, W. L., & Spears, J. W. (2015, June). JOURNAL OF ANIMAL SCIENCE, Vol. 93, pp. 2948–2955.

Bioavailability in chicks of zinc from zinc propionate

JOURNAL OF APPLIED POULTRY RESEARCH, 22(2), 153–159.

Effect of copper on performance, carcass characteristics, and muscle fatty acid composition of meat goat kids

Journal of Animal Science, 91(10), 5004–5010.

Effect of dietary copper and breed on gene products involved in copper acquisition, distribution, and use in Angus and Simmental cows and fetuses

JOURNAL OF ANIMAL SCIENCE, 91(2), 861–871.

Effects of quaternary benzo(c)phenanthridine alkaloids on growth performance, shedding of organisms, and gastrointestinal tract integrity in pigs inoculated with multidrug-resistant Salmonella spp

American Journal of Veterinary Research, 74(12), 1530–1535.

Amount and source of dietary copper affects small intestine morphology, duodenal lipid peroxidation, hepatic oxidative stress, and mRNA expression of hepatic copper regulatory proteins in weanling pigs

JOURNAL OF ANIMAL SCIENCE, 90(9), 3112–3119.

Chromium propionate enhances insulin sensitivity in growing cattle

JOURNAL OF DAIRY SCIENCE, 95(4), 2037–2045.

Relative bioavailability in chicks of manganese from manganese propionate

JOURNAL OF APPLIED POULTRY RESEARCH, 21(1), 126–130.

Effect of dietary boron on physiological responses in growing steers inoculated with bovine herpesvirus type-1

RESEARCH IN VETERINARY SCIENCE, 90(1), 78–83.

Investigation of breed and sex effects on cytochrome P450 gene expression in cattle liver

RESEARCH IN VETERINARY SCIENCE, 90(2), 235–237.

Tolerance of cattle to increased dietary sulfur and effect of dietary cation-anion balance

JOURNAL OF ANIMAL SCIENCE, 89(8), 2502–2509.

Age and Dietary Iron Affect Expression of Genes Involved in Iron Acquisition and Homeostasis in Young Pigs

JOURNAL OF NUTRITION, 140(2), 271–277.

Ctr1 Is an Apical Copper Transporter in Mammalian Intestinal Epithelial Cells in Vivo That Is Controlled at the Level of Protein Stability

JOURNAL OF BIOLOGICAL CHEMISTRY, 285(42), 32385–32392.

Effect of dietary boron on immune function in growing beef steers*

JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 94(3), 273–279.

Effects of supplementing dairy cows with chromium propionate on milk and tissue chromium concentrations

JOURNAL OF DAIRY SCIENCE, 93(10), 4774–4780.

Effects of water quality and dietary potassium on performance and carcass characteristics of yearling steers

JOURNAL OF ANIMAL SCIENCE, 88(1), 296–305.

High dietary iron reduces transporters involved in iron and manganese metabolism and increases intestinal permeability in calves

JOURNAL OF DAIRY SCIENCE, 93(2), 656–665.

Proteins involved in iron metabolism in beef cattle are affected by copper deficiency in combination with high dietary manganese, but not by copper deficiency alone

JOURNAL OF ANIMAL SCIENCE, 88(1), 275–283.

Bioaccessibility of iron from soil is increased by silage fermentation

JOURNAL OF DAIRY SCIENCE, 92(6), 2896–2905.

Iron Transporters Are Differentially Regulated by Dietary Iron, and Modifications Are Associated with Changes in Manganese Metabolism in Young Pigs

JOURNAL OF NUTRITION, 139(8), 1474–1479.

Technical note: Copper chaperone for copper, zinc superoxide dismutase: A potential biomarker for copper status in cattle

JOURNAL OF ANIMAL SCIENCE, 87(12), 4161–4166.

The addition of high manganese to a copper-deficient diet further depresses copper status and growth of cattle

BRITISH JOURNAL OF NUTRITION, 101(7), 1068–1078.

Bioavailability of copper from copper glycinate in steers fed high dietary sulfur and molybdenum

JOURNAL OF ANIMAL SCIENCE, 86(1), 173–179.

Copper deficiency in the young bovine results in dramatic decreases in brain copper concentration but does not alter brain prion protein biology

JOURNAL OF ANIMAL SCIENCE, 86(11), 3069–3078.

Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus

POULTRY SCIENCE, 87(3), 449–458.

Role of antioxidants and trace elements in health and immunity of transition dairy cows

Veterinary Journal, 176(1), 70–76.

Uptake of zinc from zinc sulfate and zinc proteinate by ovine ruminal and omasal epithelia

JOURNAL OF ANIMAL SCIENCE, 86(6), 1357–1363.

Decreased brain copper due to copper deficiency has no effect on bovine prion proteins

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 352(4), 884–888.

Effects of dietary metabolizable energy and protein on early growth responses of broilers to dietary lysine

POULTRY SCIENCE, 86(12), 2639–2648.

Effects of tribasic copper chloride versus copper sulfate provided in corn- and molasses-based supplements on forage intake and copper status of beef heifers

JOURNAL OF ANIMAL SCIENCE, 85(3), 871–876.

Exposure to low dietary copper or low copper coupled with high dietary manganese for one year does not alter brain prion protein characteristics in the mature cow

JOURNAL OF ANIMAL SCIENCE, 85(11), 2895–2903.

Plasma diamine oxidase: A biomarker of copper deficiency in the bovine

JOURNAL OF ANIMAL SCIENCE, 85(9), 2198–2204.

Effect of chromium supplementation and copper status on glucose and lipid metabolism in Angus and Simmental beef cows

ANIMAL FEED SCIENCE AND TECHNOLOGY, 128(3-4), 253–265.

Effect of chromium supplementation and copper status on performance and reproduction of beef cows

ANIMAL FEED SCIENCE AND TECHNOLOGY, 128(3-4), 266–275.

Effects of a slow-release urea source on absorption of ammonia and endogenous production of urea by cattle

ANIMAL FEED SCIENCE AND TECHNOLOGY, 130(3-4), 225–241.

Feeding a low manganese diet to heifers during gestation impairs fetal growth and development

JOURNAL OF DAIRY SCIENCE, 89(11), 4305–4311.

Growth, reproductive performance, and manganese status of heifers fed varying concentrations of manganese

JOURNAL OF ANIMAL SCIENCE, 84(12), 3375–3380.

Influence of cobalt concentration on vitamin B-12 production and fermentation of mixed ruminal microorganisms grown in continuous culture flow-through fermentors

JOURNAL OF ANIMAL SCIENCE, 84(3), 635–640.

Differential responses to dietary cobalt in finishing steers fed corn-versus barley-based diets

Journal of Animal Science, 83(11), 2580–2589.

Influence of dietary manganese on performance, lipid metabolism, and carcass composition of growing and finishing steers

Journal of Animal Science, 83(10), 2434–2439.

The effect of early weaning on feedlot performance and measures of stress in beef calves

Journal of Animal Science, 83(4), 933–939.

Bioavailability of copper from tribasic copper chloride and copper sulfate in growing cattle

ANIMAL FEED SCIENCE AND TECHNOLOGY, 116(1-2), 1–13.

Bioavailability of zinc from zinc sulfate and different organic zinc sources and their effects on ruminal volatile fatty acid proportions

LIVESTOCK PRODUCTION SCIENCE, 90(2-3), 211–217.

Effect of dietary copper source (cupric citrate and,cupric sulfate) and concentration on growth performance and fecal copper excretion in weanling pigs

Journal of Animal Science, 82(4), 1234–1240.

Effect of dietary trace mineral concentration and source (inorganic vs. chelated) on performance, mineral status, and fecal mineral excretion in pigs from weaning through finishing

Journal of Animal Science, 82(7), 2140–2147.

Effect of finishing system (feedlot or pasture), high-oil maize, and copper on conjugated linoleic acid and other fatty acids in muscle of finishing steers

Animal Science (Penicuik, Scotland), 78(2), 261–269.

Effect of zinc source and dietary level on zinc metabolism in Holstein calves

JOURNAL OF DAIRY SCIENCE, 87(4), 1085–1091.

Effects of dietary zinc on performance and immune response of growing pigs inoculated with porcine reproductive and respiratory syndrome virus and mycoplasma hyopneumoniae

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 17(10), 1438–1446.

Growth performance, carcass characteristics, plasma minerals, and fecal mineral excretion in grower-finisher swine fed diets with levels of trace minerals lower than common industry levels

Journal of Swine Health and Production, 12(5), 237–241.

Advances in mineral nutrition for ruminants studied

Feedstuffs, 75(29), 12.

Effect of boron supplementation of pig diets on the production of tumor necrosis factor-alpha and interferon-gamma

Journal of Animal Science, 81(10), 2552–2561.

Effect of copper source and level on performance and copper status of cattle consuming molasses-based supplements

Journal of Animal Science, 81(6), 1357–1362.

Effects of breed (Angus vs Simmental) and copper and zinc source on mineral status of steers fed high dietary iron

Journal of Animal Science, 81(1), 318–322.

Effects of high dietary calcium propionate and dietary cation-anion balance on calcium metabolism and longissimus muscle tenderness in finishing steers

Professional Animal Scientists, 19(6), 424.

Effects of organic forms of zinc on growth performance, tissue zinc distribution, and immune response of weanling pigs

Journal of Animal Science, 81(8), 2063–2071.

Estimated copper requirements of Angus and Simmental heifers

Journal of Animal Science, 81(4), 865–873.

Influence of dietary cobalt source and concentration on performance, vitamin B12 status, and ruminal and plasma metabolites in growing and finishing steers

Journal of Animal Science, 81(12), 3151–3159.

Trace mineral bioavailability in ruminants

Journal of Nutrition, 133(5), 1506S–1509.

Dietary zinc effects on growth performance and immune response of endotoxemic growing pigs

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 15(10), 1496–1501.

Effect of zinc source (zinc oxide vs zinc proteinate) and level on performance, carcass characteristics, and immune response of growing and finishing steers

Journal of Animal Science, 80(10), 2747–2752.

Iron methionine as a source of iron for the neonatal pig

NUTRITION RESEARCH, 22(10), 1209–1217.

Long-term effects of boron supplementation on reproductive characteristics and bone mechanical properties in gilts

Journal of Animal Science, 80(1), 154–161.

Copper status, serum cholesterol, and milk fatty acid profile in Holstein cows fed varying concentrations of copper

JOURNAL OF DAIRY SCIENCE, 84(10), 2308–2313.

Dietary phosphorus and an inflammatory challenge affect performance and immune function of weanling pigs

Journal of Animal Science, 79(2), 413–419.

Effect of dietary boron on growth performance, calcium and phosphorus metabolism, and bone mechanical properties in growing barrows

Journal of Animal Science, 79(12), 3120–3127.

Effect of pharmacological concentrations of dietary copper on lipid and cholesterol metabolism in pigs

NUTRITION RESEARCH, 21(9), 1299–1308.

Effect of ruminal protein degradability on growth and N metabolism in growing beef steers

Journal of Animal Science, 79(2), 533–541.

Inflammatory response, growth, and thyroid hormone concentrations are affected by long-term boron supplementationin gilts

Journal of Animal Science, 79(6), 1549–1556.

Performance, carcass characteristics, and lipid metabolism in growing and finishing Simmental steers fed varying concentrations of copper

Journal of Animal Science, 79(11), 2920–2925.

Boron supplementation of a semipurified diet for weanling pigs improves feed efficiency and bone strength characteristics and alters plasma lipid metabolites

Armstrong, T. A., Spears, J. W., Crenshaw, T. D., & Nielsen, F. H. (2000, October). JOURNAL OF NUTRITION, Vol. 130, pp. 2575–2581.

Dietary copper effects on lipid metabolism and circulating catecholamine concentrations in finishing steers

Journal of Animal Science, 78(10), 2737–2744.

Dietary copper effects on lipid metabolism, performance, and ruminal fermentation in finishing steers

Journal of Animal Science, 78(9), 2452–2458.

Effect of copper source (cupric citrate vs cupric sulfate) and level on growth performance and copper metabolism in pigs

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 13(8), 1154–1161.

Effect of dietary copper level on performance and copper status of growing meat goats

Sheep & Goat Research Journal, 16(2000), 65–71.

Effects of dietary copper concentration and source on performance and copper status of growing and finishing steers

Journal of Animal Science, 78(9), 2446–2451.

Effects of dietary copper source and concentration on carcass characteristics and lipid and cholesterol metabolism in growing and finishing steers

Journal of Animal Science, 78(4), 1053–1059.

Effects of soybean oil and dietary copper on ruminal and tissue lipid metabolism in finishing steers

Journal of Animal Science, 78(10), 2713–2721.

High dietary copper improves odor characteristics of swine waste

Journal of Animal Science, 78(4), 859–864.

Micronutrients and immune function in cattle

Spears, J. W. (2000, November). PROCEEDINGS OF THE NUTRITION SOCIETY, Vol. 59, pp. 587–594.

Peptide YY administration decreases brain aluminum in the Ts65Dn Down syndrome mouse model

Growth, Development, & Aging, 64(1-2), 3–19.

Chromium and cattle nutrition

JOURNAL OF TRACE ELEMENTS IN EXPERIMENTAL MEDICINE, 12(2), 141–147.

Effect of breed (Angus Vs Simmental) on immune function and response to a disease challenge in stressed steers and preweaned calves

Journal of Animal Science, 77(3), 516–521.

Reevaluation of the metabolic essentiality of the minerals - Review

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 12(6), 1002–1008.

The effects of low-copper diets with or without supplemental molybdenum on specific immune responses of stressed cattle

Journal of Animal Science, 77(1), 230–237.

Effects of dietary copper and molybdenum on copper status, cytokine production, and humoral immune response of calves

JOURNAL OF DAIRY SCIENCE, 81(12), 3286–3292.

Influence of level and source (inorganic vs organic) of zinc supplementation on immune function in growing lambs

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 11(2), 139–144.

Effect of shipping and chromium supplementation on performance, immune response, and disease resistance of steers

Journal of Animal Science, 75(7), 1956–1964.

Effects of copper deficiency and copper deficiency coupled with high dietary iron or molybdenum on phagocytic cell function and response of calves to a respiratory disease challenge

Journal of Animal Science, 75(4), 1112–1118.

Immune response and growth of stressed weanling pigs fed diets supplemented with organic or inorganic forms of chromium

Journal of Animal Science, 75(2), 409–416.

Long-term effects of consumption of low-copper diets with or without supplemental molybdenum on copper status, performance, and carcass characteristics of cattle

Journal of Animal Science, 75(11), 3057–3065.

Performance and glucose metabolism in calves fed a chromium-nicotinic acid complex or chromium chloride

JOURNAL OF DAIRY SCIENCE, 80(8), 1744–1750.

Relationship between nutrition and immune response

Tri-state dairy nutrition conference. Proceedings. Sponsored by Michigan State University, Purdue University, and Ohio State University, 1997, (1997), 1–11.

The effects of copper deficiency with or without high dietary iron or molybdenum on immune function of cattle

Journal of Animal Science, 75(5), 1400–1408.

Beef nutrition in the 21st century

Spears, J. W. (1996, April). ANIMAL FEED SCIENCE AND TECHNOLOGY, Vol. 58, pp. 29–35.

Organic trace minerals in ruminant nutrition

Spears, J. W. (1996, April). ANIMAL FEED SCIENCE AND TECHNOLOGY, Vol. 58, pp. 151–163.

Minerals in forages

Forage Quality, Evaluation, and Utilization, 281.

The effects of antibiotic prophylaxis on postoperative complications after rumenotomy in cattle

Journal of the American Veterinary Medical Association, 200(9), 1332–1335.

Effects of zinc methionine and zinc oxide on performance, blood characteristics, and antibody titer response to viral vaccination in stressed feeder calves

Journal of the American Veterinary Medical Association, 199(12), 1731.

IONOPHORES AND NUTRIENT DIGESTION AND ABSORPTION IN RUMINANTS

JOURNAL OF NUTRITION, 120(6), 632–638.

Influence of lysocellin and monensin on mineral metabolism of steers fed forage-based diets

Journal of Animal Science, 67(8), 2140.

Lysocellin effects on growth performance, ruminal fermentation, nutrient digestibility and nitrogen metabolism in steers fed forage diets

Journal of Animal Science, 67(2), 547.

Zinc methionine for ruminants: Relative bioavailability of zinc in lambs and effects of growth and performance of growing heifers

Journal of Animal Science, 67(3), 835.

PERFORMANCE, RUMINAL AND SERUM CHARACTERISTICS OF STEERS FED LASALOCID ON PASTURE

JOURNAL OF ANIMAL SCIENCE, 58(2), 460–464.