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Effects of Supplemental Copper on the Serum Lipid Profile, Meat Quality, and Carcass Composition of Goat Kids

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Abstract

To evaluate the effects of copper (Cu) supplementation on the serum lipid profile, meat quality, and carcass composition of goat kids, thirty-five 3–4-month-old Jian Yang big-eared goat kids (BW 20.3 ± 0.6 kg) were randomly assigned to one of seven dietary Cu treatments (n = 5/treatment). The dietary Cu concentrations were: (1) control (no supplemental Cu), (2) 20 mg, (3) 40 mg, (4) 80 mg, (5) 160 mg, (6) 320 mg, and (7) 640 mg of supplemental Cu/kg dry matter (DM). Copper was supplemented as CuSO4.5H2O (25.2 % Cu). The goats were fed a high-concentrate basal diet with the different concentrations of supplemental Cu/kg DM for 96 days. The serum lipid profile was determined on day 51 and day 96. Meat quality and carcass composition of longissimus dorsi muscle were measured after the goats were slaughtered at 96 days. Serum total cholesterol, triglycerides, high density lipoprotein-cholesterol (HDL-C), and low density lipoprotein-cholesterol (LDL-C) were not affected by treatment (P > 0.18). No differences were observed in drip loss, cooking loss, a* (redness/greenness) and b* (yellowness/blueness) values (P > 0.17); however, the 24-h pH value (linear; P = 0.0009) and L* (brightness) value (linear; P = 0.0128) decreased, and shear force increased (linear; P = 0.0005) as Cu supplementation increased. The intramuscular fat (%) increased (linear; P = 0.001) as supplemental Cu increased. No differences (P > 0.21) in the moisture, crude protein, and ash (%) were observed. Results of this study indicate that supplemental Cu does not modify the serum lipid profile; however, it can impact intramuscular fat content and the meat quality of goat kids.

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Acknowledgments

This work was supported by Special Project of Basic Science for Federal Universities (Project No. 13NZYQN25, Beijing, People’s Republic of China), National Spark Program projects (Project No. 2012GA810001, Beijing, People’s Republic of China), and Animal Science Discipline Program of Southwest University for Nationalities (Project No. 2011XWD-S0905, Chengdu, Sichuan, China).

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Authors and Affiliations

  1. College of Life Science and Technology, Southwest University for Nationalities, Chengdu, 610041, Peoples’ Republic of China

    Yanling Huang, Yong Wang & Chunhua Guo

  2. Department of Animal Science, North Carolina State University, Raleigh, NC, 27695-7621, USA

    Xi Lin

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  1. Yanling Huang
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  2. Yong Wang
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  3. Xi Lin
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  4. Chunhua Guo
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Correspondence to Yanling Huang.

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Huang, Y., Wang, Y., Lin, X. et al. Effects of Supplemental Copper on the Serum Lipid Profile, Meat Quality, and Carcass Composition of Goat Kids. Biol Trace Elem Res 159, 140–146 (2014). https://doi.org/10.1007/s12011-014-9976-9

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