Evaluación del efecto de la harina de sangre de pollo como fuente de proteína sobre los índices productivos en pollos broiler

Abstract

The objective of this research work was to evaluate the effect of chicken blood meal as a protein source on the productive indices in broiler chickens, since producers seek to have a more efficient and profitable production. The experiment was carried out on the premises of the "Granja Avícola Amores" in the Tarqui parish, Pastaza province. For this research, a completely randomized experimental design was used using 100 Cobb 500 line chickens per treatment and 25 birds per experimental unit. Four treatments were used: T0 (control), T1 (4% blood meal), T2 (8% blood meal) and T3 (12% blood meal); with 4 repetitions, making up a total of 400 birds used for this research; the evaluation was carried out during the growth and fattening stages of the birds. The results obtained in the variables weight gain, feed consumption, feed conversion, live weight and mortality did not show significant differences (P<0.05) between treatments. However, the yield to the carcass did show significant differences (P<0.05), being T0 with 77.38% the treatment with the least yield, T1 with 80.00%, T2 with 80.13% and T3 with 82, 49%, achieving the best result. In the anatomopathological lesions variable, no major alterations were observed at the hepatic and intestinal level that decrease the productive indices. In the European efficiency index (IEE) it was observed that all the treatments presented good results among them, standing out the groups with blood meal. In the cost/benefit ratio, no treatment had losses, the best treatment was T3, obtaining a profit of $0.42 for each dollar invested, unlike T1 with $0.35; T2 with $0.38 and T0 with the lowest figure with $0.27. The research concludes that the inclusion of blood meal in broiler chicken feed does not influence production rates, but it is capable of improving carcass performance and reducing production costs. Keywords: Blood meal, diet, poultry, chickens, weight gain, feed conversion, feed intake, carcass yield. ABSTRACT The objective of this research work was to evaluate the effect of chicken blood meal as a protein source on the productive indices in broiler chickens, since producers seek to have a more efficient and profitable production. The experiment was carried out on the premises of the "Granja Avicola Amores" in the Tarqui parish, Pastaza province. For this research, a completely randomized experimental design was used using 100 Cobb 500 line chickens per treatment and 25 birds per experimental unit. Four treatments were used: TO (control), T1 (4% blood meal), T2 (8% blood meal) and T3 (12% blood meal); with 4 repetitions, making up a total of 400 birds used for this research; the evaluation was carried out during the growth and fattening stages of the birds. The results obtained in the variables weight gain, feed consumption, feed conversion, live weight and mortality did not show significant differences (P<0.05) between treatments. However, the yield to the carcass did show significant differences (P<0.05), being TO with 77.38% the treatment with the least yield, T1 with 80.00%, T2 with 80.13% and T3 with 82, 49%, achieving the best result. In the anatomopathological lesions variable, no major alterations were observed at the hepatic and intestinal level that decrease the productive indices. In the European efficiency index (IEE) it was observed that all the treatments presented good results among them, standing out the groups with blood meal. In the cost/benefit ratio, no treatment had losses, the best treatment was T3, obtaining a profit of $0.42 for each dollar invested, unlike T1 with $0.35; T2 with $0.38 and TO with the lowest figure with $0.27. The research concludes that the inclusion of blood meal in broiler chicken feed does not influence production rates, but it is capable of improving carcass performance and reducing production costs.