RESUMO Foram conduzidos dois experimentos com o objetivo de determinar o valor nutricional e avaliar o desempenho e características da carcaça de suínos alimentados com farelo de canola (Brassica napus). No Experimento I, foi conduzido um ensaio de digestibilidade total com 14 suínos mestiços de linhagem comercial, machos castrados, com 60,69 ± 4,26 kg de PV inicial. O alimento teste farelo de canola (FC), substituiu em 25% a ração referência à base de milho e farelo de soja. Cada suíno constituiu uma unidade experimental, totalizando sete unidades experimentais por ração. Os valores de energia digestível (ED) e energia metabolizável (EM) na matéria natural para o FC foram de 2995 kcal/kg e 2796 kcal/kg, respectivamente. No Experimento II, foram utilizados 50 suínos mestiços, com peso vivo inicial de 29,90 ± 1,16 kg e final de 60,33 ± 3,38 kg, na fase de crescimento, e peso vivo inicial de 60,37 ± 1,6 kg e final de 90,37 ± 3,19 kg na fase de terminação. Foi utilizado o delineamento de blocos inteiramente casualizados, com quatro tratamentos, (6, 12, 18 e 24% de FC), com 10 repetições e um suíno por unidade experimental. Adicionalmente, foi formulada uma ração testemunha, contendo 0% de FC. Os dados foram submetidos à análise de variância e adicionalmente foi aplicado o Teste de Dunnett, e análise de regressão, a 5% de probabilidade. Os resultados sugerem que é possível incluir até 24% de FC nas dietas de suínos, em crescimento e terminação, sem prejudicar o desempenho e as características da carcaça.

ABSTRACT Two experiments were performed for the purpose of determining the nutritional value and assess the performance and carcass traits in pigs fed on canola meal (Brassica napus). Experiment I consisted of a total digestibility trial conducted with 14 castrated commercial crossbred male pigs with 60.69 ± 4.26 kg initial live weight. The treatments consisted of a control diet based on maize and soybean meal and another diet containing canola meal (control + 25% canola meal). Each pig was an experimental unit, totalling seven experimental units per diet. The digestible energy and the metabolizable energy of canola meal used was 2,999 and 2,730 kcal.kg-1, respectively. These values were used to formulate the diets of the performance experiment. Experiment II included 50 crossbred pigs with an average initial live weight of 29.90 ± 1.16 kg and an average final live weight of 60.33 ± 3.38 kg during the growing phase, and an average initial live weight of 60.37 ± 1.6 kg and an average final live weight of 90.37 ± 3.19 kg during the finishing phase. The experimental design consisted of randomized blocks, with four treatments (6, 12, 18, and 24% canola meal), 10 repetitions, and one pig per experimental unit. The control diet was formulated with 0% canola meal. The data were assessed using ANOVA test and the averages of the treatments were compared using Dunnett's test and regression analysis at a 5% probability level. The results suggest that it is possible to use up to 24% canola meal in the diets for pigs during the growing and finishing phases without affecting the performance and carcass traits.

Determinou-se o valor nutricional e avaliou-se o desempenho de leitões alimentados com rações contendo glicerinas semipurificadas de origem vegetal (GSPV) e mista (GSPM). Na digestibilidade foram utilizados 32 leitões, machos castrados, distribuídos em delineamento em blocos ao acaso. Foram estudadas duas glicerinas (GSPV e GSPM) e três níveis de inclusão na dieta-teste (4, 8 e 12%). A unidade experimental consistiu de um leitão. A energia metabolizável (EM) das glicerinas foi estimada pela análise de regressão do consumo de EM (kcal kg-1) associada à glicerina vs. o consumo de glicerina (kg). Os valores de EM (kcal kg-1), na matéria natural, obtidos foram 3.373 para GSPV e 2.932 para GSPM, indicando que as duas glicerinas são fontes de alta energia disponível para a alimentação de leitões. No desempenho, foram utilizados 90 leitões, distribuídos em blocos ao acaso, em esquema fatorial 2 x 4 + 1, sendo duas glicerinas, quatro níveis de inclusão (3, 6, 9 e 12%), cinco repetições e dois leitões por unidade experimental. Adicionalmente foi formulada uma ração-testemunha sem glicerina (0%). Não houve efeito do nível de inclusão de glicerina sobre o desempenho, sugerindo que é viável a utilização em até 12% de ambas as glicerinas na alimentação de leitões.

The nutritional value and the performance of piglets fed on diets with semipurified glycerin (SPGV) and mixed (SPGM) vegetable oil was determined and evaluated. Thirty-two crossbred piglets, allotted in a completely randomized block design, were used in the digestibility trial. Two types of glycerin (SPGV and SPGM) and three levels of diet (4, 8 and 12%) were studied. The experimental unit consisted of one piglet. Glycerins' metabolizable energy (ME) was estimated by regression of ME (kcal kg-1) intake associated with glycerin vs. glycerin intake (kg). ME as-feed-basis rates were 3,373 for SPGV and 2,932 for SPGM, or rather, the glycerins are highly available energy source for piglets. In the performance trial, 90 piglets were allotted in a completely randomized blocks design in a 2 x 4 + 1 factorial scheme, two glycerins, four levels (3, 6, 9 and 12%), five replicates (pens) and two piglets per pen. A control diet with no glycerin (0%) was additionally formulated. Since no effect of glycerin inclusion on pig performance occurred, it was feasible to use up to 12% of both types of glycerin on piglets feeding.

Two experiments were carried out to determine the nutritional value and to evaluate performance of piglets fed two types of crude glycerine (CG), which were made from vegetable oil (CGS) and a mix of animal fat + % soybean oil (CGA). In experiment I, a digestibility assay was conducted using 32 crossbred piglets (19.20±1.52 kg). The experimental unit consisted of one pig, with a total of four experimental units per diet. The glycerine levels used in the digestibility assay were 4, 8, and 12% of the basal diet (corn + soybean based). The digestible (DE) and metabolizable energy (ME) values of glycerine were estimated by regression of DE and ME intake (kcal/kg) vs. glycerine intake (kg). The values (as-fed basis) of DE and ME (kcal/kg) obtained were: CGS = 5,070 and 4,556; CGA = 5,143 and 4,488, respectively. The results indicate that these two types of glycerine are a highly-available energy source for the feeding of piglets (15-30 kg). In experiment II, 90 piglets (BW = 15.18±0.67 to 30.28±1.68 kg), were allotted in a completely randomized design in 2 × 4 factorial arrangement, with of two types of crude glycerine (CGS and CGA) and four inclusion levels (3, 6, 9, and 12%). Five experimental units (pens with two pigs) were used for each level of crude glycerine, resulting in five replicates per treatment in the diet. Additionally, a control diet containing no glycerine (0%) was formulated. There was no interaction between levels of CG and types of crude glycerine, and the regression analysis indicates no effects of crude glycerine inclusion on performance and plasma variables. The results suggest that it is feasible to use up to 12% of both tyes of crude glycerine (obtained from soybean oil and mixed) in the diet for piglets without impairing performance, in addition to promoting a reduction of about 11% in the cost with feeding.