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Thirty-six New Zealand White rabbits, 3 5 days old and with 506 g of live weight were used, in order to evaluate the effects of three diets on the productive and economic indicators of the animals during fattening. The diets consisted in: 1) commercial concentrate feed plus fresh forage of perennial soybean (Neonotonia wightií), as control; 2) breadfruit (Artocarpus altilis) meal plus perennial soybean and 3) integral concentrate feed composed by a mixture of fruit and leaf meal from the breadfruit tree, plus vitamins and minerals. Avariance analysis was used according to a completely randomized design with three treatments and four repetitions. After 90 days of fattening, the live weight at slaughter was 2 347,2 223 and 2 127 g/rabbit, respectively, the average gain was 20, 19 and 18 g/day and viability was 100% in all treatments. Economically, the concentrate feed balanced with fruit and leaf meal from the breadfruit tree had a profit of US $ 1,05/fattened rabbit, the feeding system with breadfruit meal plus perennial soybean foliage earned US $0,89/fattened rabbit, while the control system generated economic losses, due to the high costs of raw materials that composed the conventional concentrate feed. It is concluded that alternative feeding sy stems which use fruit and leaf meal from the breadfruit tree are economically and biologically suitable for fattening rabbits. [ABSTRACT FROM AUTHOR]

Para evaluar la inclusión de 0, 10, 20 y 30 % de harina de frutos del árbol del pan (Artocarpus altitis), como sustituto del maíz en piensos convencionales para pollos de ceba, se utilizó durante 42 d un total de 224 pollos de engorde de un día de edad, del híbrido HE21 Se realizó análisis de varianza, según diseño de clasificación simple con cuatro tratamientos y siete repeticiones. Con la inclusión de 0, 10 y 20 % de la harina de frutos del árbol del pan, la viabilidad (98.2, 98.2 y 96.4), el peso vivo (1801, 1791 y 1784 g/ave), el peso de la canal (1131, 1116 y 1108 g/ave) y el peso de la pechuga (306, 299 y 292 g/ave) no difirieron entre tratamientos. Sin embargo, la inclusión de 30 % deterioró el peso vivo, el consumo y la conversión. El costo del alimento por tonelada de canal se redujo en 56.39 y 138.54 USD, cuando se incluyó la harina de frutos del árbol del pan, en concentraciones de 10 y 20 %, respectivamente. Se recomienda incluir, como límite máximo, 20 % de harina de frutos del árbol del pan en dietas para pollos de engorde. [ABSTRACT FROM AUTHOR]

A total of 224 broiler chickens of one day of age of the hybrid HE21 was used to evaluate the inclusion of 0, 10, 20, and 30 % of meal of breadfruit tree (Artocarpus altitis) as substitute for corn in conventional feedstuffs for broiler chickens. An analysis of variance was performed according to simple classification design with four treatments and seven repetitions. With the inclusion of 0, 10, and 20 % of meal of the breadfruit tree, the viability (98.2, 98.2, and 96.4), the liveweight (1801, 1791, and 1784 g/bird), the weight of the carcass (1131, 1116, and 1108 g/bird), and the weight of the breast (306, 299, and 292 g/bird) did not differ between treatments. Nevertheless, the inclusion of 30 % deteriorated the liveweight, the intake, and the conversion. The cost of the feed per ton of carcass was reduced in 56.39 and 138.54 USD, when including the meal of breadfruit tree at concentrations of 10 and 20 %, respectively. It is recommended to include, as maximum limit, 20 % of the meal of the breadfruit tree in broiler chicken diets. [ABSTRACT FROM AUTHOR]

Se utilizaron 112 pollos machos del híbrido EB-34, desde su nacimiento hasta los 42 d de edad, para valorar la posibilidad de sustituir de forma total al maíz de importación por harina de yuca de producción nacional en dietas para pollos de ceba, debido al aumento del precio del maíz en el mercado mundial. Se realizó análisis de varianza, según diseño de clasificación simple, con dos tratamientos (sistema maíz- soya y yuca- soya) y siete repeticiones. La viabilidad de los pollos fue óptima en todos los tratamientos (98.21 %). El peso vivo a los 42 d fue significativamente mayor (P < 0.05) en el sistema maíz-soya (1801g/ave) con respecto al de yuca-soya (1754 g/ave) El consumo de alimento no difirió entre tratamientos (3544 y 3522), tampoco la conversión alimentaria (1.97 y 2.00). En el sistema maíz-soya hubo un mayor peso de las porciones comestibles (P < 0.05) que en el de yuca-soya: peso de la canal (1134 y 1059 g/ave) del cuello (85 y 76 g/ave) de las vísceras comestibles (91.61y 79.5 g/ave) peso de la pechuga (306 y 280 g/ave) y de los muslos más encuentro (392 y 365g/ave). No obstante, con el sistema yuca-soya se pudieron producir pollos de ceba para el consumo humano, en un sistema intensivo de producción, en el que se sustituyó el sistema maíz-soya. Los atractivos principales fueron la calidad de la carne (dureza, aroma y sabor) y los resultados económicos positivos que se lograron al reducir el costo de la tonelada de porciones comestibles en 112.26 USD. [ABSTRACT FROM AUTHOR]

One-hundred and twelve male chickens of the EB-34 hybrid were used from birth up to 42 d of age to assess the possibility of substituting totally imported corn by nationally produced cassava meal in broiler diets, due to the rise in corn prices in the world's market. An analysis of variance was performed according to one-way classification design with two treatments (corn-soybean and cassava-soybean system) and seven repetitions. Broiler viability was optimum in all treatments (98.21 %). Liveweight at 42 d was significantly higher (P < 0.05) in the corn-soybean system (1801 g/bird), compared with the cassava-soybean (1754 g/bird). Feed intake did not differ between treatments (3544 and 3522), as well as feed conversion (1.97 and 2.00). In the corn-soybean system, there was higher relevance of the edible parts (P < 0.05) than in the cassava-soybean: weight of carcass (1134 and 1059 g/bird), neck (85 and 76 g/bird), edible viscera (91.61 and 79.5 g/bird), breast (306 and 280 g/bird), and drumstick plus thigh (392 and 365 g/bird). However, broiler chickens were produced for human intake with the cassava-soybean system under intensive production substituting the corn-soybean system. The main attractions were the meat quality (hardness, smell, and flavor), and the positive economic outcomes by reducing the cots of one ton of edible parts in 112.26 USD. [ABSTRACT FROM AUTHOR]

A total of 27 uncastrated male lambs, of the Pelibuey breed, in the growing-fattening stage, with an average initial weight of 19,5 kg, were supplemented at a rate of 0 (T1); 12 (T2) and 20 (T3) g of breadfruit feed per kilogram of LW. Ninety days after the beginning of the test the final live weight (T1: 25,7; T2: 28,2 and T3: 29,6 kg) and the mean daily gain (T1: 67; T2:97 and T3: 113 g) increased significantly (P<0,001) as the level of the breadfruit feed increased; the same happened to the carcass weight (T1: 11,8; T2: 13,1 and T3: 14,0 kg), which differed for P<0,01. The economic results showed a significant saving with the alternative diets used, which reduced the production costs. The palatability test did not show differences among the treatments regarding the degree of acceptance, taste and juiciness of the meat. Thus, it was demonstrated that the presence of the breadfruit feed in the diets for sheep, in the concentrations studied, does not alter the organoleptic properties of the meat. The use of this plant in sheep feeding is concluded to be feasible, with which the productive yields and economic incomes increase. [ABSTRACT FROM AUTHOR]

A total of 27 uncastrated male lambs, of the Pelibuey breed, in the growing-fattening stage, with an average initial weight of 19,5 kg, were supplemented at a rate of 0 (Tl); 12 (T2) and 20 (T3) g of breadfruit feed per kilogram of LW. Ninety days after the beginning of the test the final live weight (Tl: 25,7; T2: 28,2 and T3: 29,6 kg) and the mean daily gain (Tl: 67; T2:97 and T3: 113 g) increased significantly (P<0,001) as the level of the breadfruit feed increased; the same happened to the carcass weight (Tl: 11,8; T2:13,land T3:14,0 kg), which differed for P<0,01. The economic results showed a significant saving with the alternative diets used, which reduced the production costs. The palatability test did not show differences among the treatments regarding the degree of acceptance, taste and juiciness of the meat. Thus, it was demonstrated that the presence of the breadfruit feed in the diets for sheep, in the concentrations studied, does not alter the organoleptic properties of the meat. The use of this plant in sheep feeding is concluded to be feasible, with which the productive yields and economic incomes increase. [ABSTRACT FROM AUTHOR]