090 Effect of essential oils or tylosin on performance, liver abscesses, carcass characteristics, and meat quality in feedlot steers

Pukrop, J. R.; Campbell, Brian T.; Schoonmaker, J. P.

doi:10.2527/asasmw.2017.090

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably in the same study there was an interaction for DMI to be greatest when EO was fed with monensin. Similarly, Pukrop et al (2017) found no difference due to EO (1 g/d; origin not reported) for performance characteristics, including weight, days on feed, ADG, DMI, and G:F. No differences were observed in carcass characteristics ( P ≥ 0.19). Another study with goats found no difference in feed efficiency, growth performance or intake when fed 0%, 4% (34 g/d), or 8% (68.5 g/d) blend of 80% canola oil and 20% palm oil ( Adeyemi et al 2016 ).…”

Section: Resultsmentioning

confidence: 76%

“…A study by Meyer et al (2009) showed no difference in carcass characteristics (HCW, fat thickness, LM area, and marbling) when cattle were fed an 82.5% concentrate diet with an EO mixture (1 g/d; thymol, eugenol, vanillin, guaiacol, and limonene) plus tylosin compared with cattle fed only monensin and tylosin. Similarly, Pukrop et al (2017) found no differences in carcass characteristics when EO (origin not reported) was included at 1 g/steer daily in a diet of 54% cracked corn, 14% DDGS, and 14% CS. Choi et al (2013) found slightly greater marbling scores when cattle were fed 3% palm oil (33 g/d) compared with a control ( P < 0.09).…”

Section: Resultsmentioning

confidence: 86%

See 1 more Smart Citation

Impact of a fumaric acid and palm oil additive on beef cattle performance and carcass characteristics in diets containing increasing concentrations of corn silage1

Wilson

Hilscher

McPhillips

et al. 2020

Translational Animal Science

View full text Add to dashboard Cite

A feedlot study was conducted comparing a natural feed additive at varying corn silage (CS) inclusions on receiving and finishing cattle performance. The study utilized 480 crossbred steers (initial shrunk body weight [BW] = 296 kg; SD = 24.1 kg) in 48 pens with 10 steers/pen and 8 pens per treatment. Treatments were designed as a 2 × 3 factorial with 3 inclusions of CS (14%, 47%, 80%; dry matter [DM] basis) with or without (+, −) the inclusion of a feed additive containing fumaric acid and palm oil (FAPO). All treatment diets contained 16% modified distillers grains plus solubles and 4% supplement with dry-rolled corn replacing CS on a DM basis. All steers were fed the 80 CS diet and adapted to 47% and 14% CS over a 10- and 24-d period, respectively. Cattle fed 80 CS were fed for 238 days, 47 CS for 195 days, and 14% CS were fed for 168 days to a common backfat of 1.28 cm (P ≥ 0.59). There were no interactions for CS inclusion and the inclusion of FAPO on final body weight (FBW), DMI, ADG, G:F, hot carcass weight (HCW), LM area, marbling, or calculated yield grade (CYG; P ≥ 0.15). There was no significant difference for FBW, DMI, ADG, G:F, HCW, marbling, or CYG for cattle fed with or without FAPO (P ≥ 0.13). However, there was a quadratic response for FBW, ADG, G:F, HCW, marbling, and CYG with increased inclusion of CS (P ≤ 0.04). Inclusion of FAPO had no effect on performance. Feeding CS at greater inclusions decreased daily gain and feed efficiency but increased FBW when fed to an equal fat endpoint. CS gave greater returns ($/animal) when fed at 80% of diet DM. Feeding greater amounts of CS can be an economical way to finish cattle. In this study, FAPO did not affect animal performance, carcass characteristics, or economic return.

show abstract

Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 86%

Impact of a fumaric acid and palm oil additive on beef cattle performance and carcass characteristics in diets containing increasing concentrations of corn silage1

Wilson

Hilscher

McPhillips

et al. 2020

Translational Animal Science

View full text Add to dashboard Cite

show abstract

Investigation of tylosin in feed of feedlot cattle and effects on liver abscess prevalence, and fecal and soil microbiomes and resistomes1

Weinroth

Martin

Doster

et al. 2019

Journal of Animal Science

View full text Add to dashboard Cite

Liver abscesses in feedlot cattle are detrimental to animal performance and economic return. Tylosin, a macrolide antibiotic, is used to reduce prevalence of liver abscesses, though there is variable efficacy among different groups of cattle. There is an increased importance in better understanding the etiology and pathogenesis of this condition because of growing concern over antibiotic resistance and increased scrutiny regarding use of antibiotics in food animal production. The objective of this study was to compare the microbiomes and antimicrobial resistance genes (resistomes) of feces of feedlot cattle administered or not administered tylosin and in their pen soil in 3 geographical regions with differing liver abscess prevalences. Cattle (total of 2,256) from 3 geographical regions were selected for inclusion based on dietary supplementation with tylosin (yes/no). Feces and pen soil samples were collected before harvest, and liver abscesses were identified at harvest. Shotgun and 16S rRNA amplicon sequencing were used to evaluate the soil and feces. Microbiome and resistome composition of feces (as compared by UniFrac distances and Euclidian distances, respectively) did not differ (P > 0.05) among tylosin or no tylosin-administered cattle. However, feedlot location was associated with differences (P ≤ 0.05) of resistomes and microbiomes. Using LASSO, a statistical model identified both fecal and soil microbial communities as predictive of liver abscess prevalence in pens. This model explained 75% of the variation in liver abscess prevalence, though a larger sample size would be needed to increase robustness of the model. These data suggest that tylosin exposure does not have a large impact on cattle resistomes or microbiomes, but instead, location of cattle production may be a stronger driver of both the resistome and microbiome composition of feces.

show abstract

090 Effect of essential oils or tylosin on performance, liver abscesses, carcass characteristics, and meat quality in feedlot steers

Cited by 2 publications

References 0 publications

Impact of a fumaric acid and palm oil additive on beef cattle performance and carcass characteristics in diets containing increasing concentrations of corn silage1

Impact of a fumaric acid and palm oil additive on beef cattle performance and carcass characteristics in diets containing increasing concentrations of corn silage1

Investigation of tylosin in feed of feedlot cattle and effects on liver abscess prevalence, and fecal and soil microbiomes and resistomes1

Contact Info

Product

Resources

About