Objetivou-se determinar o consumo voluntário, a digestibilidade da MS, MO e dos nutrientes (PB, EB, FDN, FDA, CT, CNF e EE) e o balanço de nitrogênio de dietas contendo feno de maniçoba (Manihot glaziovii Muell. Arg.). Vinte quatro cordeiros Santa Inês com média de 28,62 kg PV foram distribuídos em um delinemento completamente casualizado e alimentados com rações contendo 20, 40, 60 ou 80% de feno de maniçoba. Os consumos médios de MS, MO, PB e CT foram 1,24; 1,12; 0,20 e 0,82 kg/dia, respectivamente, e os consumos médios de EM, FDN, FDA, EE e CNF foram, respectivamente, 2,78 mcal/dia; 401,01; 215,50; 83,42; 426,62; e 126,10 g/dia. Os coeficientes de digestibilidade de MS, PB e EB foram, respectivamente, 60,22; 56,16 e 61,90%, e os de FDN, FDA, CT e CNF, 44,73; 54,63; 61,50 e 78,41%, respectivamente. O balanço nitrogenado foi positivo, com média de 7,20 g N/kg MS/dia, e o nitrogênio aparentemente retido representou 21,45% do N ingerido. A inclusão de 80% de feno de maniçoba na dieta não afetou o consumo de MS, no entanto, reduziu a digestibilidade aparente dos nutrientes da dieta.

The objective was to determine the voluntary intake and digestibility of DM, OM and nutrients (CP, GE, NDF, ADF, CT, NSC and EE). And nitrogen balance of diets containing maniçoba maniçoba (Manihot glaziovii Muell. Arg.) hay Twenty-four Santa Ines lambs, average 28.62 kg LW were allotted to a completely randomized design and fed diets containing 20, 40, 60 e 80% of maniçoba hay.The mean intakes of DM, OM, CP and CT were 1.24, 1.12; 0.20; and 0.827 kg/d, respectively, and the mean intakes of ME, NDF, ADF, EE and NSC were, respectively, 2.78 mcal/kg, 401.01, 215.50, 83.42, 426.62, and 126.10 g/d. The apparent digestibility for DM, CP, and CE were respectively, 60.22, 61.28, 56.16, 61.90, and for NDF, ADF CT and NSC were, respectively, 44.73, 54.63, 61.50, and 78.41. The nitrogen balance was positive, with mean of 7.20 g N/kg DM/d, and the apparently retained nitrogen represented 21.45% of ingested N. The inclusion of 80% of maniçoba hay in the diet did not affect the DM intake, however, the nutrient apparent digestibility in the diet decreased as maniçoba hay increased in the diet.

Foram avaliados os efeitos de dietas combinando o resíduo de vitivinícolas a diferentes fontes energéticas sobre consumo, ganho de peso diário e conversão alimentar em ovinos terminados em confinamento. Foram utilizados 18 ovinos sem padrão racial definido, não castrados, com idade aproximada de sete meses e peso vivo médio inicial de 23,0kg, distribuídos num delineamento em blocos casualizados, com três tratamentos e seis repetições. O período experimental constou de 63 dias, sendo as dietas compostas de 50% de resíduo de vitivinícolas e 50% de concentrados energéticos: grão de milho moído (Zea mays) (T1), raspa de mandioca (Manihot esculenta) enriquecida com 1,8% de uréia (T2) e farelo de palma forrageira (Opuntia ficus) enriquecido com 1,1% de uréia (T3). Foram avaliados os consumos de matéria seca (MS), proteína bruta (PB) e carboidratos totais (CHOT), ganho de peso diário e total e a conversão alimentar. Os consumos de MS, PB e CHOT foram de 1.085, 906 e 1.508g dia-1; 129, 139 e 220g dia-1; 846, 691 e 1.157g dia-1; os ganhos de peso médio diário foram de 117, 71 e 132g; a conversão alimentar de 9,50; 13,28 e 11,30, respectivamente para as combinações de resíduo e grão de milho moído, raspa de mandioca e farelo de palma. As médias diárias de ganho de peso vivo obtidas pelos ovinos ao longo do período de engorda revelaram um bom potencial forrageiro do resíduo de vitivinícolas combinado às diferentes fontes energéticas.

The effect of combining diets residues from grapewine industries with different energy sources on consumption, daily weight gain and feed conversion of sheep in feedlot termination were evaluated. Eighteen seven-month old male sheep, non-defined breed, were used, weighted initialy 23.0kg, distributed in randomized blocks with three treatments and six repetitions. The experimental period consisted of 63 days, being the diets composed of 50% of grapewine industry residue and 50% of energy concentrate: ground corn grain (Zea mays) (T1), cassava chips (Manihot esculenta) enriched with 1.8% of urea (T2) and fodder cactus dried meal (Opuntia ficus) enriched with 1.1% of urea (T3). Intakes of dry matter (DM), crude protein (CP) and total carbohydrate (TCHO) were evaluated, as well as daily and total weight gains and feed conversion. Respectively for the combination of residue and ground corn grain, for cassava chips and for fodder cactus dried meal, intakes of MS, PB and CHOT were 1085, 906 and 1508g dia-1; 129, 139 and 220g dia-1; 846, 691 and 1157g day-1; average daily weight gains were 117g, 71g and 132g; feed conversions were 9.50, 13.28 and 11.30. Daily averages of live weight gains obtained by sheep during the fattening period showed a good forage potential of the residues of grapewine industries combined with different energetic sources.

O consumo e a digestibilidade aparente dos nutrientes foram determinados em ovinos confinados, objetivando avaliar a combinação do resíduo desidratado de vitivinícolas a diferentes fontes energéticas. Foram utilizados dezoito ovinos não castrados, com idade aproximada de sete meses e 21 kg de peso vivo, distribuídos num delineamento em blocos casualizados com três tratamentos e seis repetições. As dietas foram compostas de 50% de resíduo de vitivinícolas e 50% de concentrados energéticos: grão de milho moído (Zea mays L.) (T1), raspa de mandioca (Manihot esculenta Crantz) enriquecida com 1,8% de uréia (T2) e farelo de palma forrageira (Opuntia fícus-indica L.) enriquecido com 1,1% de uréia (T3). As maiores ingestões foram observadas para as combinações de resíduo com grão de milho moído e resíduo com farelo de palma, respectivamente, com valores para a matéria seca de 84,34 e 107,37 g/PV0,75/dia/animal, proteína bruta 133 e 160 g/dia/animal e NDT 461 e 497 g/dia/animal. As digestibilidades da matéria seca, proteína bruta e fibra em detergente neutro foram de 52,89, 47,12 e 42,37; 54,36, 49,63 e 54,95; 36,96, 34,22 e 32,82 %, respectivamente para as dietas com grão de milho, raspa de mandioca e farelo de palma. Os resultados obtidos para o consumo e para a digestibilidade aparente dos nutrientes, revelaram um bom potencial do resíduo de vitivinícolas combinado as fontes energéticas estudadas.

To evaluate the diet combination of the dried winery residue with different energy sources, intake and apparent digestibility were determined in feedlot sheep. Eighteen male sheep with seven months of age, non-defined breed, weighting initially 21 kg, were used, distributed in a randomized blocks design with three treatments and six replication. The diets were composed with 50% of dried grapes residue and 50% of energetic concentrate: corn meal (Zea mays L.) (T1), cassava meal (Manihot esculenta Crantz) enriched with 1,8% of urea (T2) and cactus meal (Opuntia ficus-indica L.) enriched with 1,1% of urea (T3). The greatest intake were observed in the combinations of dried winery residue with corn meal and cactus meal and the dry matter intake were, respectively, 84,34 and 107,37 g/PV0,75/day; crude protein intake were 133 and 160 g/day and TDN were 461 and 497 g/day. The dry matter, crude protein and neutral detergent fiber digestibility coefficients were 52.89, 47.12 and 42.37; 54.36, 49.63 and 54.95; 36.96, 34.22 and 32,82%, respectively, for the corn meal diet, cassava meal and cactus meal. The results for the intake and digestibility coefficients revealed that dried winery residue has good potential to be used to feed sheep in combination with different energy sources.