@book{254354,
	author = {Jiang, G.},
	title = {The effects of threonine on performance parameters, carcass traits, visceral organ indices and serum biochemical parameters of linwu ducks, aged 4 to 8 weeks},
	url = {http://www.scielo.br/pdf/rbca/v20n2/1516-635X-rbca-20-02-00387.pdf}
}