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Greenhouse gas emissions from calf- and yearling-fed beef production systems, with and without the use of growth promotants
Download2012
Baron, V. S, Aalhus, J. L., Basarab, J. A., López-Campos, Ó., Haugen-Kozyra, K., Okine, E. K.
A spring calving herd consisting of about 350 beef cows, 14–16 breeding bulls, 60 replacement heifers and 112 steers were used to compare the whole-farm GHG emissions among calf-fed vs. yearling-fed production systems with and without growth implants. Carbon footprint ranged from 11.63 to 13.22...
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Improving beef hamburger quality and fatty acid profiles through dietary manipulation and exploitation of fat depot heterogeneity
Download2014
Dugan, Michael E. R., Rolland, David C., Uttaro, Bethany, Aalhus, Jennifer L., Block, Hushton C., Vahmani, Payam, Mapiye, Cletos, Proctor, Spencer D., McAllister, Timothy A.
Background Hamburger is the most consumed beef product in North America, but lacks in nutritional appeal due to its high fat content and high proportion of saturated fatty acids (SFA). Objectives of the present study were to improve the FA profiles of hamburgers made with perirenal fat (PRF) and...
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Influence of sire breed on the interplay among rumen microbial populations inhabiting the rumen liquid of the progeny in beef cattle
Download2013
Guan, L. L., Wang, Z., Zhou, M., Goonewardene, L. A., Moore, S. S., Hernandez-Sanabria, E.
This study aimed to evaluate whether the host genetic background impact the ruminal microbial communities of the progeny of sires from three different breeds under different diets. Eighty five bacterial and twenty eight methanogen phylotypes from 49 individuals of diverging sire breed (Angus,...
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Initial differences in lipid processing leading to pig- and beef-derived mature adipocyte dedifferentiation
Download2009
Fernyhough, Melinda E., Hausman, Gary J., Guan, Leluo, Guridi, Maitea, Jiang, Zhihua, Dodson, Michael V., Chen, Jie
Clonal cultures of pig-derived mature adipocytes are capable of dedifferentiating and forming proliferative-competent progeny cells in vitro. Initial lipid processing, is different to that observed in cultures of beef-derived adipocytes. Mature pig adipocytes extrude lipid before proliferation,...
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Interactive effects of low voltage electrical stimulation and leg restraint on meat quality of Charolais crossbred steer carcasses
Download1990
Jones, C. R., Bruce, H. L., Ball, R. O.
The meat quality of the longissimus muscle of 12 Charolais crossbred steers that were electrically stimulated on randomly selected sides approximately 1 h postmortem was investigated. Temperature and pH measurements were taken on each side at 5 min prior and 1, 4, 24 and 48 h subsequent to...
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Mechanisms of pressure-mediated cell death and injury in Escherichia coli: From fundamentals to food applications
Download2015
High hydrostatic pressure is commercially applied to extend the shelf life of foods, and to improve food safety. Current applications operate at ambient temperature and 600 MPa or less. However, bacteria that may resist this pressure level include the pathogens Staphylococcus aureus and strains...
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Modification of beef quality through steer age at slaughter, breed cross and growth promotants
Download2012
Aalhus, J. L., Basarab, J. A., Girard, I., Bruce., H. L., Larsen, I. L.
A 23 factorial experiment tested the interactions of slaughter age (12–13 or 18–20 mo), growth implants use (Component E-S, TE-S), ractopamine hydrochloride (RAC) feed supplementation use and breed cross [Hereford–Aberdeen Angus (HAA) or Charolais–Red Angus (CRA)] on pH, temperature, objective...
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Modification of muscle inherent properties through age at slaughter, growth promotants and breed crosses
Download2011
Bruce., H. L., Aalhus, J. L., Larsen, I. L., Girard, I., Basarab, J. A.
A 24 factorial experiment tested the interactions of slaughter age (12–13 or 18–20 mo), growth hormone use, β-adrenergic agonist (β-AA) use and breed cross [Hereford–Aberdeen Angus (HAA) or Charolais–Red Angus (CRA)] on the composition, fibre types, and connective tissue characteristics of m....
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Phenotypic correlations of fatty acid composition among intramuscular, subcutaneous and intermuscular fat tissues in concentrate-fed beef cattle of differing genotypes
Download2009
Wang, Z., Aldai, N., Osoro, K., Dugan, M. E. R., Crews Jr, D. H., Li, C.
In an attempt to predict intramuscular fatty acid composition using easily accessible fat depots, between-tissue correlations were studied in 75 Asturiana de los Valles bulls with different levels of muscular hypertrophy, and 25 Asturiana de la Montaña bulls. Trans-18:1 in intramuscular fat was...
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Subcutaneous fatty acid composition of steers finished as weanlings or yearlings with and without growth promotants
Download2013
Baron, V. S., Aalhus, J. L., Turner, T. D., Dugan, M. E. R., Mapiye, C., Basarab, J. A.
Background The current study evaluated the subcutaneous fatty acid (FA) composition of calf- and yearling-fed steers with or without growth promoting implants. Crossbred steers (n = 112; 267 ± 5.0 kg) of the same contemporary group were allocated to one of four production system and implant...