CASE STUDY: Supplementation of Chelated Forms of Zinc, Copper, and Manganese to Feedlot Cattle with Access to Drinking Water with High Sulfate Concentration

Vázquez-Añón, M.; Peters, T.; Hampton, T.; McGrath, J.; Huedepohl, Brian

doi:10.1532/s1080-7446(15)30937-2

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The decrease in DMI with CTM in this trial differs from results from other trials that typically found no effect of trace mineral source on DMI (Spears and Kegley, 2002;Wright and Spears, 2004;Nunnery et al, 2007;Vázquez-Añón et al, 2007;Cope et al, 2009;Hackbart et al, 2010). One of the reasons for this effect on DMI is due to BW, which was numerically greater for cows on the ITM treatment; when DMI was expressed relative to BW, the intake difference between treatments was no longer significant (P = 0.20).…”

Section: Resultscontrasting

confidence: 91%

“…Diminishing responses with increasing supplementation level may have led to the lack of treatment differences observed in this study. One study using the same HMTBa chelated mineral sources as used in this trial evaluated the effect of feeding beef cattle a diet balanced to meet trace mineral requirements using inorganic mineral sources or the same diet with increased Cu, Mn, and Zn provided by the chelated source (Vázquez-Añón et al, 2007). In that experiment, water had high sulfate concentrations, which likely caused mineral antagonisms, and supplementation with the chelated trace mineral sources reduced morbidity and mortality (Vázquez-Añón et al, 2007).…”

mentioning

confidence: 99%

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Immune responses in lactating Holstein cows supplemented with Cu, Mn, and Zn as sulfates or methionine hydroxy analogue chelates

Nemec

Richards²,

Atwell³

et al. 2012

Journal of Dairy Science

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The aim of this study was to compare effects of inorganic sulfate versus chelated forms of supplemental Cu, Mn, and Zn on milk production, plasma and milk mineral concentrations, neutrophil activity, and antibody titer response to a model vaccination. Holstein cows (n = 25) were assigned in 2 cohorts based on calving date to a 12-wk randomized complete block design study. The first cohort consisted of 17 cows that had greater days in milk (DIM; mean of 77 DIM at the start of the trial) than the second cohort of 8 cows (32 DIM at the start of the trial). Diets were formulated to supplement 100% of National Research Council requirements of Cu, Mn, and Zn by either inorganic trace minerals (ITM) in sulfate forms or chelated trace minerals (CTM) supplied as metal methionine hydroxy analog chelates, without accounting for trace mineral contribution from other dietary ingredients. Intake and milk production were recorded daily. Milk composition was measured weekly, and milk Cu, Mn, and Zn were determined at wk 0 and 8. Plasma Cu and Zn concentrations and neutrophil activity were measured at wk 0, 4, 8, and 12. Neutrophil activity was measured by in vitro assays of chemotaxis, phagocytosis, and reactive oxygen species production. A rabies vaccination was administered at wk 8, and vaccine titer response at wk 12 was measured by both rapid fluorescent focus inhibition test and ELISA. Analyzed dietary Cu was 21 and 23 mg/kg, Mn was 42 and 46 mg/kg, and Zn was 73 and 94 mg/ kg for the ITM and CTM diets, respectively. No effect of treatment was observed on milk production, milk composition, or plasma minerals. Dry matter intake was reduced for CTM compared with ITM cows, but this was largely explained by differences in body weight between treatments. Milk Cu concentration was greater for CTM than ITM cows, but this effect was limited to the earlier DIM cohort of cows and was most pronounced for multiparous compared with primiparous cows. Measures of neutrophil function were unaffected by treatment except for an enhancement in neutrophil phagocytosis with the CTM treatment found for the later DIM cohort of cows only. Rabies antibody titer in CTM cows was 2.8 fold that of ITM cows as measured by ELISA, with a trend for the rapid fluorescent focus inhibition test. Supplementation of Cu, Mn, and Zn as chelated sources may enhance immune response of early lactation dairy cows compared with cows supplemented with inorganic sources.

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Section: Resultscontrasting

confidence: 91%

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confidence: 99%

Immune responses in lactating Holstein cows supplemented with Cu, Mn, and Zn as sulfates or methionine hydroxy analogue chelates

Nemec

Richards²,

Atwell³

et al. 2012

Journal of Dairy Science

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“…Other studies have shown that organic sources of trace minerals have no effect on the dry matter intake (Spears and Kegley, 2002;Wright and Spears, 2004;Vázquez-Añón et al, 2007;Cope et al, 2009;Hackbart et al, 2010). However, Malcolm-Callis et al (2000) reported a reduction of dry matter intake in finishing steers with increasing zinc levels in the diet (20, 100, and 200 mg kg −1 DM).…”

Section: Resultsmentioning

confidence: 97%

Effect of organic sources of minerals on fat-corrected milk yield of dairy cows in confinement

et al. 2015

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-This study evaluated the effects of organic and inorganic sources of minerals in diets for mid-lactation dairy cows on milk yield and composition, intake and total apparent digestibility of dry matter and nutrients, blood parameters, microbial protein synthesis, and energy and protein balances. Twenty Holstein cows averaging 146.83±67.34 days in milk and weighing 625.30±80.37 kg were used. The experimental design was a crossover. Diets were composed of corn silage (50%), ground grain corn, and soybean meal, differing with regard to the sources of trace minerals, plus an organic and inorganic mix. The organic mineral source increased milk fat and fat-corrected milk yield without changing milk yield, intake, or total apparent digestibility. Blood parameters, microbial protein synthesis, and energy and protein balances were not affected by the sources of minerals. Organic sources of minerals improve milk fat yield without affecting other parameters.

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Economic assessments from experimental research trials of feedlot cattle health and performance: a scoping review

Dixon

Hanthorn

Pendell

et al. 2022

Translational Animal Science

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Animal husbandry decisions for feedlot cattle may be based on economic or financial impacts reported from livestock research trials comparing interventions such as health practices or performance technologies. Despite the importance of economic assessments to production management decisions, there are no consensus guidelines for their methods or reporting. Thus, we hypothesized that methods and reporting of economic assessments in the scientific literature are inconsistent. This scoping review describes the types of economic assessments used to evaluate the costs and benefits of interventions in feedlot trials, how measured health and performance outcomes are utilized in economic evaluations, and the completeness of reporting. A structured search was used to retrieve peer-reviewed articles (published in English) on experimental trials performed in Australia, North America, or South Africa, which reported feedlot cattle health, performance, or carcass characteristics and included an economic outcome. A total of 7,086 articles were screened for eligibility; 91 articles (comprising 113 trials) met the inclusion criteria. Trial characteristics, methods, and reporting data were extracted. A primary outcome was stated in only 36% (41/113) of the trials. Of these 41 trials, an economic outcome was reported as a primary outcome in 18 (44%). Methodology for the economic assessment was reported for 54 trials (48%), the type of economic assessment was explicitly stated for 21 trials (19%), and both the type of economic assessment and methodology used were reported for 29 trials (26%); neither were reported for nine trials (8%). Eight types of economic assessments were explicitly reported: cost-effectiveness, cost-benefit analysis, enterprise analysis, partial budget, break-even analysis, profitability, decision analysis, and economic advantage. From the trials that did not report an assessment type, three were identified: partial budget, enterprise analysis, and gross margin analysis. Overall, only 32 trials (28%) reported economics as an outcome of interest, the methodology used or the type of assessment, and values, sources, and dates for at least some of the price data used in the analysis. Given the variability in methods and inconsistent reporting for feedlot trials identified by this scoping review, a guideline to facilitate consistency on appropriate methods and reporting is warranted.

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CASE STUDY: Supplementation of Chelated Forms of Zinc, Copper, and Manganese to Feedlot Cattle with Access to Drinking Water with High Sulfate Concentration

Cited by 4 publications

References 10 publications

Immune responses in lactating Holstein cows supplemented with Cu, Mn, and Zn as sulfates or methionine hydroxy analogue chelates

Immune responses in lactating Holstein cows supplemented with Cu, Mn, and Zn as sulfates or methionine hydroxy analogue chelates

Effect of organic sources of minerals on fat-corrected milk yield of dairy cows in confinement

Economic assessments from experimental research trials of feedlot cattle health and performance: a scoping review

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