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Effects of organic selenium supplementation on growth performance, carcass measurements, tissue selenium concentrations, characteristics of reproductive organs, and testis gene expression profiles in boars.
J Anim Sci. 2012 Feb; 90(2):533-42.JA

Abstract

The objective was to compare growth and physiological responses in boars fed diets supplemented with organic or inorganic sources of Se. At weaning, crossbred boars (n = 117; 8.3 kg of BW) were placed in nursery pens (3 boars/pen) and assigned within BW blocks to receive on an ad libitum basis 1 of 3 dietary treatments: I) basal diets with no supplemental Se (controls), II) basal diets supplemented with 0.3 mg/kg of organic Se, and, III) basal diets supplemented with 0.3 mg/kg of sodium selenite (13 pens/dietary treatment). Average daily gain (470 g/d), ADFI (896 g/d), and G:F (0.54) were similar among groups. Blood Se concentrations were greater (P < 0.01) for boars consuming organic Se (107.5 ± 4.8 µg/L) or sodium selenite (114.7 ± 4.8 µg/L) compared with controls (28.4 ± 4.8 µg/L). Intact pens of boars (11 pens/dietary treatment) were moved to a grow-finish barn and continued to receive appropriate diets on an ad libitum basis. Average daily gain (1,045 g/d) and ADFI (2,716 g/d) were similar among groups. Gain:feed was affected by treatment (P = 0.02) and was greater (P < 0.06) for boars fed organic Se (0.378 ± 0.004) compared with boars fed sodium selenite (0.368 ± 0.004) or controls (0.363 ± 0.004). Blood Se concentrations were greater (P < 0.01) in grow-finish boars consuming organic Se (198.9 ± 5.5 µg/L) than boars consuming sodium selenite (171.4 ± 5.4 µg/L) or controls (26.7 ± 5.4 µg/L). Treatment did not affect (P > 0.15) HCW, dressing percent, carcass length, LM area, standardized fat-free lean, lean percentage, backfat thickness, visual color, firmness, marbling, or Minolta loin color scores. Selenium supplementation did not affect (P > 0.17) testis or accessory sex gland sizes. Concentrations of Se in loin, liver, kidney, testis, cauda epididymis, and accessory sex glands were greatest (P < 0.01) in boars receiving organic Se, intermediate in boars receiving sodum selenite, and least in control boars. Microarray analysis of testis gene expression did not detect differences (P > 0.05) due to dietary treatment. Testis gene expression of glutathione peroxidase 4, as determined using quantitative PCR, was increased (P < 0.01) in boars fed organic Se compared with those fed sodium selenite. In summary, dietary supplementation of boars with organic Se failed to alter ADG or ADFI but enhanced G:F during grow-finish. More research is needed to discern the mechanism by which organic Se improves feed efficiency in boars.

Authors+Show Affiliations

Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21948612

Citation

Speight, S M., et al. "Effects of Organic Selenium Supplementation On Growth Performance, Carcass Measurements, Tissue Selenium Concentrations, Characteristics of Reproductive Organs, and Testis Gene Expression Profiles in Boars." Journal of Animal Science, vol. 90, no. 2, 2012, pp. 533-42.
Speight SM, Estienne MJ, Harper AF, et al. Effects of organic selenium supplementation on growth performance, carcass measurements, tissue selenium concentrations, characteristics of reproductive organs, and testis gene expression profiles in boars. J Anim Sci. 2012;90(2):533-42.
Speight, S. M., Estienne, M. J., Harper, A. F., Barb, C. R., & Pringle, T. D. (2012). Effects of organic selenium supplementation on growth performance, carcass measurements, tissue selenium concentrations, characteristics of reproductive organs, and testis gene expression profiles in boars. Journal of Animal Science, 90(2), 533-42. https://doi.org/10.2527/jas.2010-3747
Speight SM, et al. Effects of Organic Selenium Supplementation On Growth Performance, Carcass Measurements, Tissue Selenium Concentrations, Characteristics of Reproductive Organs, and Testis Gene Expression Profiles in Boars. J Anim Sci. 2012;90(2):533-42. PubMed PMID: 21948612.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of organic selenium supplementation on growth performance, carcass measurements, tissue selenium concentrations, characteristics of reproductive organs, and testis gene expression profiles in boars. AU - Speight,S M, AU - Estienne,M J, AU - Harper,A F, AU - Barb,C R, AU - Pringle,T D, Y1 - 2011/09/23/ PY - 2011/9/28/entrez PY - 2011/9/29/pubmed PY - 2012/6/12/medline SP - 533 EP - 42 JF - Journal of animal science JO - J. Anim. Sci. VL - 90 IS - 2 N2 - The objective was to compare growth and physiological responses in boars fed diets supplemented with organic or inorganic sources of Se. At weaning, crossbred boars (n = 117; 8.3 kg of BW) were placed in nursery pens (3 boars/pen) and assigned within BW blocks to receive on an ad libitum basis 1 of 3 dietary treatments: I) basal diets with no supplemental Se (controls), II) basal diets supplemented with 0.3 mg/kg of organic Se, and, III) basal diets supplemented with 0.3 mg/kg of sodium selenite (13 pens/dietary treatment). Average daily gain (470 g/d), ADFI (896 g/d), and G:F (0.54) were similar among groups. Blood Se concentrations were greater (P < 0.01) for boars consuming organic Se (107.5 ± 4.8 µg/L) or sodium selenite (114.7 ± 4.8 µg/L) compared with controls (28.4 ± 4.8 µg/L). Intact pens of boars (11 pens/dietary treatment) were moved to a grow-finish barn and continued to receive appropriate diets on an ad libitum basis. Average daily gain (1,045 g/d) and ADFI (2,716 g/d) were similar among groups. Gain:feed was affected by treatment (P = 0.02) and was greater (P < 0.06) for boars fed organic Se (0.378 ± 0.004) compared with boars fed sodium selenite (0.368 ± 0.004) or controls (0.363 ± 0.004). Blood Se concentrations were greater (P < 0.01) in grow-finish boars consuming organic Se (198.9 ± 5.5 µg/L) than boars consuming sodium selenite (171.4 ± 5.4 µg/L) or controls (26.7 ± 5.4 µg/L). Treatment did not affect (P > 0.15) HCW, dressing percent, carcass length, LM area, standardized fat-free lean, lean percentage, backfat thickness, visual color, firmness, marbling, or Minolta loin color scores. Selenium supplementation did not affect (P > 0.17) testis or accessory sex gland sizes. Concentrations of Se in loin, liver, kidney, testis, cauda epididymis, and accessory sex glands were greatest (P < 0.01) in boars receiving organic Se, intermediate in boars receiving sodum selenite, and least in control boars. Microarray analysis of testis gene expression did not detect differences (P > 0.05) due to dietary treatment. Testis gene expression of glutathione peroxidase 4, as determined using quantitative PCR, was increased (P < 0.01) in boars fed organic Se compared with those fed sodium selenite. In summary, dietary supplementation of boars with organic Se failed to alter ADG or ADFI but enhanced G:F during grow-finish. More research is needed to discern the mechanism by which organic Se improves feed efficiency in boars. SN - 1525-3163 UR - https://www.unboundmedicine.com/medline/citation/21948612/Effects_of_organic_selenium_supplementation_on_growth_performance_carcass_measurements_tissue_selenium_concentrations_characteristics_of_reproductive_organs_and_testis_gene_expression_profiles_in_boars_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.2527/jas.2010-3747 DB - PRIME DP - Unbound Medicine ER -