Effects of guanidinoacetic acid on the performance of broiler breeders and its effect of the progenies - Araújo, Lúcio Francelino; Araújo, Cristiane Soares da Silva; Rodrigueiro, Ramalho José Barbosa; Rademacher, Meike; Rostagno, Horácio Santiago (European Symposium on Poultry Nutrition, 2013)