965 Open Access Asian Australas. J. Anim. Sci. Vol. 27, No. 7 : 965-973 July 2014 http://dx.doi.org/10.5713/ajas.2013.13416
www.ajas.info pISSN 1011-2367 eISSN 1976-5517
Effects of a Chelated Copper as Growth Promoter on Performance and Carcass Traits in Pigs J. Zhao*, G. Allee1, G. Gerlemann1, L. Ma1, M. I. Gracia2, D. Parker, M. Vazquez-Anon, and R. J. Harrell3 Novus International Inc, Saint Charles, MO, USA 63304 ABSTRACT: Three studies were conducted to investigate whether a chelated Cu can replace CuSO4 as a growth promoter in pigs. In Exp. 1, a total of 240 piglets (Large White×Landrace, 7.36±0.10 kg) were randomly allocated to 1 of 3 treatments with 8 replicates and 10 piglets per pen. Treatments included a NRC control (CuSO4, 6 mg/kg), two Cu supplementations from either CuSO4 or Cu(HMTBa)2 at 170 mg/kg. Pigs fed Cu(HMTBa)2 were 6.0% heavier than pigs fed either the NRC control or 170 mg/kg CuSO4 (p = 0.03) at the end of the experiment. During the 42 days of experimental period, pigs fed Cu(HMTBa)2 gained 9.0% more (p = 0.01), tended to eat more feed (p = 0.09), and had better feed efficiency (p = 0.06) than those fed CuSO4. Compared with the 6 mg/kg CuSO4 NRC control, liver Cu was increased 2.7 times with 170 mg/kg CuSO4 supplementation, and was further increased with Cu(HMTBa)2 (4.5 times, p
www.ajas.info pISSN 1011-2367 eISSN 1976-5517
Effects of a Chelated Copper as Growth Promoter on Performance and Carcass Traits in Pigs J. Zhao*, G. Allee1, G. Gerlemann1, L. Ma1, M. I. Gracia2, D. Parker, M. Vazquez-Anon, and R. J. Harrell3 Novus International Inc, Saint Charles, MO, USA 63304 ABSTRACT: Three studies were conducted to investigate whether a chelated Cu can replace CuSO4 as a growth promoter in pigs. In Exp. 1, a total of 240 piglets (Large White×Landrace, 7.36±0.10 kg) were randomly allocated to 1 of 3 treatments with 8 replicates and 10 piglets per pen. Treatments included a NRC control (CuSO4, 6 mg/kg), two Cu supplementations from either CuSO4 or Cu(HMTBa)2 at 170 mg/kg. Pigs fed Cu(HMTBa)2 were 6.0% heavier than pigs fed either the NRC control or 170 mg/kg CuSO4 (p = 0.03) at the end of the experiment. During the 42 days of experimental period, pigs fed Cu(HMTBa)2 gained 9.0% more (p = 0.01), tended to eat more feed (p = 0.09), and had better feed efficiency (p = 0.06) than those fed CuSO4. Compared with the 6 mg/kg CuSO4 NRC control, liver Cu was increased 2.7 times with 170 mg/kg CuSO4 supplementation, and was further increased with Cu(HMTBa)2 (4.5 times, p
