Abstract
This study aimed to evaluate the effect of three different sources of sodium for broilers’ performance and carcass yield. In total 414 female Ross broilers were fed on dietary treatments from one up to 42 days of age. A completely randomized experimental design was used. Broilers were distributed into a total of 6 replicates per treatment. Treatments consisted of T1- sodium chloride, T2-sodium bicarbonate with Ammonium chloride and T3-sodium formate with Ammonium chloride. Average body weight (ABW), feed consumption (FC), body weight gain (BWG), feed conversion (FE), viability (V) and European efficiency factor (EEF), preslaughtering body weight (PSBW), carcass yield (CY), thigh yield (TY) and drumstick yield (DY) were evaluated. Broilers fed on T1 and T2 showed higher feed conversion than those fed on T3 from 1 to 21, 1 to 28 and 1 to 35 days of age. Dietary treatments did not effect the remaining variables up to 35 days of age on the carcass yield. In conclusion, it is possible to substitute the traditional sodium for sodium bicarbonate and sodium formate, both supplied with Ammonium chloride, without affecting the performance or carcass yield. KEY WORDS: Consumption, HCOONa, NaCl-, NaHCO3-; NH4Cl-.
Highlights
This study aimed to evaluate the effect of three different sources of sodium for broilers’ performance and carcass yield
Treatments consisted of T1- sodium chloride, T2-sodium bicarbonate with Ammonium chloride and T3-sodium formate with Ammonium chloride
Broilers fed on T1 and T2 showed higher feed conversion than those fed on T3 from 1 to 21, 1 to 28 and 1 to 35 days of age
Summary
O experimento foi realizado no Aviário Experimental do Departamento de Zootecnia, da Faculdade de Agronomia Eliseu Maciel/UFPEL, no período de 29 de julho a 9 de setembro de 2005, com temperatura máxima de 20,4oC e mínima de 10,4oC. Alojaram-se 414 fêmeas de corte, da linhagem Ross, de um dia de idade, em dezoito boxes, totalizando 23 aves/boxe, com peso inicial entre 42 e 50 g. As dietas experimentais foram compostas, principalmente, pelo milho e farelo de soja, na forma farelada e oferecidas ad libitum para os períodos de um a 21 dias e 22 a 42 dias de idade dos frangos (Tabela 1). No 42° dia de vida, duas aves por boxe foram selecionadas de acordo com a média de peso corporal em cada box (± 5%), sendo pesadas, anilhadas e levadas para o abatedouro do Conjunto Agrotécnico Visconde da Graça/UFPEL. Submeteram-se os dados à análise estatística mediante o programa estatístico Statistics Analysis System (SAS, 1999), com o procedimento ANOVA, sendo as médias comparadas duas a duas pelo teste de Tukey com nível de significância de 5%
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