Irani Ribeiro Vieira Lopes

Farelo de amêndoa da castanha de caju na alimentação de codornas japonesas na fase de postura

This experiment was conducted to evaluate the effect of inclusion of cashew nut meal (CNM) in diets on nutrient digestibility, bird performance and egg characteristics of Japanese quails. A total of 270 japanese quails with 17 weeks of age were weighed and distributed into a completely randomized design with six diets and nine replicates of five birds in each experimental unit. Treatments consisted of one diet without CNM (control) and five diets containing 4; 8; 12; 16 and 20% of CNM. There was a linear reduction on digestibility coefficient of DM and nitrogen. But, significant difference in relation to control diet was detected only with diet containing 20% of CNM. Values of fat digestibility, gross energy and metabolizable energy of the diets were not affected by the inclusion levels of CNM. Feed intake was not affected by the inclusion of CNM. However egg production, egg weight, egg mass and feed conversion decreased linearly as dietary CNM levels increased in diets. Percentages of albumen and yolk as well as yolk color, showed a quadratic effect as dietary CNM levels increased. Albumen percentage and yolk color increased and yolk percentage decreased as CNM increased up to the level of 9%. Comparing to control diet only treatment with 20% CNM produced lower egg production, egg weight, egg mass, yolk color and bird feed conversion. In conclusion CNM can be included in Japanese quail diets in levels up to 16%.

Substituição do farelo de soja pelo farelo de coco em rações contendo farelo da castanha de caju para frangos de corte

The objective of this experiment was to evaluate the effect of substitution level of soybean meal protein by coconut meal protein in rations with cashew nut meal on the performance of broilers. It was used 325 male broiler chicks at one day of age, distributed into complete random designs with five treatments and five repetitions of 13 birds. It was tested the levels of 0, 5, 10, 15 and 20% of substitution of soybean meal protein by coconut meal protein in rations containg 20% of cashew nut meal. The substitution of soybean meal protein by coconut meal protein at levels higher than 5% reduced linearly feed intake, weight gain and feed conversion only at the initial phase. It was also verified a quadratic effect on breast yield, which increased up to the level of 11.5%. In all rearing phases, substitutions up to the level of 20% did not significantly harm performance of birds neither altered carcass traits in relation to the control group. According to the economic study performed, substitution of soybean meal protein by coconut meal protein was economically viable up to the level of 20%. Thus, in rations for broilers with 20% of cashew nut meal, soybean meal protein can be substituted by coconut meal protein at levels up to 20%.

Performance and carcass characteristics of broilers fed diets containing cashew nut meal treated or not with antioxidant

This experiment was conducted to evaluate the oxidative stability of cashew nut meal (CNM) treated or not with butylated hydroxytoluene (BHT) at different storage times and the effect of diets containing this ingredient on the performance and carcass characteristics of broilers. A batch of 400 kg of freshly produced CNM was divided into five equal portions. One portion was stored with no antioxidant and the others were treated with 500 ppm of BHT at days zero, 7, 14 and 21. The oxidative stability of CNM was measured by the acidity index and peroxide index determined by weekly samplings of the CNM. At the end of the 35-day storage time, 15% of CNM treated or not with BHT was used in the formulation of broiler diets. A feed trial was carried out with 480 day-old male Ross chicks. Birds were randomly distributed among the 5 treatments with 8 replications of 12 birds each. Acidity index of CNM did not vary, regardless of antioxidant use. However, PI values for CNM with or without BHT increased with storage time. Treatments did not affect broiler performance (feed intake, weight gain and feed conversion), carcass characteristics (carcass yield, breast yield and percentage of liver and abdominal fat), liver moisture, ether extract and abdominal fat moisture content. The ether extract content of the liver, nevertheless, was lower in birds that received diet containing CNM treated with BHT at day zero of storage than those from the control treatment. CNM stored for 35 days without BHT suffered a lipid peroxidation process. However, the use of 15% of this ingredient in diets did not affect broiler performance and carcass characteristics.

Inclusão de fenos de folha de leucena e de cunhã na ração de poedeiras

The effects of including leucena leaf (FFL) or cunha (FC) hay into diet on performance and egg quality of 100 Hisex Brown (64 weeks old) laying hens were compared. Birds were distributed into a completely randomized design with five treatments and five replicates of 4 birds each. The treatments were designed in a factorial 2 x 2 + 1, which evaluated the factors energy source (corn or sorghum) and type of hay (leucena or cunha) and an a control diet based on corn and soybean meal without inclusion of hay. The trial lasted 63 days (three periods of 21 days), during which the birds received feed and water ad libitum. Treatments did significantly affect, neither production, weight, mass, component proportion and Haugh units of eggs, nor feed conversion. However, laying hens fed ration without hay (control diet) had the lowest consumption. The inclusion of FFL, in the diet containing corn or sorghum, resulted in higher yolk pigmentation than inclusion of FC. The inclusion of FFL or FC, independent of the grain utilized as an energy source, results in a similar performance, but FFL increased yolk pigmentation capacity.