Effect of Some Compound Feeds on Pig Growth, Carcass Quality, Heavy Metal and Antibiotic Residues in Pork

Abstract

A study was carried out to investigate effect of commonly used compound feeds on growth of pigs, carcass quality, contents of heavy metals and antibiotic residues in the pork. A total of 92 piglets of Duroc x (Landrace x Yorshire) weaned at 24 days from the same farm in Dan Phuong district (Hanoi)were divided into three lots. Each lot used one of three different compound feeds from three different companies (Charoen Pokphand, Cargill and Nupark). Results showed that the investigated compound feeds (CP, Nupark and Cargill) had good effects on live weight gain as well as some carcass traits. The contents of determined heavy metals (Pb from 0,254 ± 0,090 to 0,329 ± 0,132mg/kg; Cd from 0,039 ± 0,007 to 0,048 ± 0,011 mg/kg and Hg from 0,0088 ± 0,0024 to 0,0108 ± 0,0005 mg/kg) were at acceptable levels according to the current Vietnamese and International  standards. Residues of Chloramphenicol, Tetracycline and Oxytetracycline were not found