Digestibilidade Aparente da Energia e Nutrientes de Alimentos Convencionais e Alternativos para a Tilápia do Nilo (Oreochromis niloticus, L.)

Abstract

RESUMO -O experimento foi conduzido com o objetivo de avaliar os coeficientes de digestibilidade aparente (CDa) da matéria seca (MS), energia bruta (EB) e proteína bruta (PB) do farelo de soja (FS), milho (MO), trigo (TG), farelo de trigo (FT), milheto (MT), triticale (TC), farinha de varredura de mandioca (FM) e óleo de soja (OS) para tilápia do Nilo da linhagem tailandesa. Foram utilizados 100 animais revertidos sexualmente, com peso médio de 37,61 ± 4,98 g distribuídos em dois tanques de alimentação de 500L e coleta de fezes pelo sistema modificado de Guelph em dois aquários (150 L Apparent Digestibility of the Energy and Nutrients of Conventional and Alternatives Foods for Nile Tilapia (Oreochromis niloticus)ABSTRACT -The trial aimed to evaluate the apparent strain digestibility coefficients (CDa) of dry matter (MS), gross energy (EB) and crude protein (PB) of soybean meal (FS), corn (MO), wheat (TG), wheat meal (FT), millet pearl (MT), triticale (TC), cassava meal (FM) and soybean oil (OS) of Nile tilapia fingerlings of Thai. One hundred sexual reverted animals were used, with a mean weight of 37.61 ± 4.98g, distributed in two alimentation 500L mansory tanks and feces collect in modified Guelph system in two 150L aquariums. CDa was determined by an indirect method, with 0.1% chromic oxide (Cr 2 O 3 ) as marker. CDa of MS, PB and EB was 65.49, 89.58 and 71.38 for FS; 73.22, 93.40 and 76.63 for MO; 86.51, 96.30 and 87.07 for TG; 66.79, 91.00 and 68.81 for FT; 77.96, 94.91 and 89.12 for MT; 68.51, 94.78 and 80.55 for TC; 91.11, 97.52 and 91.40% for FM, respectively, and for EB of soybean oil 89.85%, the values of digestible protein (%) and energy (kcal/kg) were 42.19 and 3057.63 for FS; 7.18 and 3037.03 for MO; 11.01 and 3423.66 for TG; 13.44 and 2825.88 FT; 13.88 and 3755.55 MT; 13.74 and 3230.69 for TC; 1.76 and 3280.09; for FM and 8485.28 kcal/kg of energy digestible for OS. The results showed that the protein and energy of these foods are efficiently used by Nile tilapia. To formulate complete diets the digestible protein and energy values must be used.

Evaluation of Locally-available Agroindustrial Byproducts as Partial Replacements to Fishmeal in Diets for Nile Tilapia (Oreochromis niloticus) Production in Ghana

“…Agbo [17] also recorded fairly similar nutrients and energy ADCs for soybean meal (dry matter: 77.47%; protein: 94.50%; lipid: 96.84% and energy: 85.99%) for Nile tilapia juveniles. The high protein digestibility of soy recorded in this study is supported by the findings of other works on soy digestibility by the Nile tilapia which include 92.72% [27], 91.56% [28], 89.28% [29] and 94.50% [17]. The dry matter digestibility for soybean for this study also compares favourably to the dry matter ADC of 71.04% reported by Pezzato et al [28].…”

Body lipid deposition in Nile tilapia fed on rations containing tannin

“…Rations were prepared every 20 days; the ingredients were grounded, mixed, forming a moist pellet of about 4 mm in diameter (Table 1). The energy and the digestible protein of the rations were calculated on the basis of the values obtained by Boscolo et al (2002), Pezzato et al (2002) and Freire (2004).…”

Desempenho produtivo de juvenis de tambaqui (Colossoma macropomum Cuvier, 1818) alimentados com rações contendo farinha de crueira de mandioca (Manihot esculenta, Crantz) em substituição ao milho (Zea mays)

“…Lacerda et al (2005) substituíram o milho pelo farelo de mandioca em rações para alevinos de carpa capim e verificaram que os índices zootécnicos não foram influenciados pelos diferentes teores de inclusão do farelo de mandioca, o que permitiu afirmar que esse alimento não apresenta problemas quanto a aceitabilidade pela carpa-capim e que os peixes aproveitam tão bem seus nutrientes quanto os do milho sem implicações na digestibilidade das rações. Resultados semelhantes foram observados para tilápia Oreochromis niloticus, alimentadas com ração contendo farinha de varredura de mandioca (Boscolo et al 2002) e para pacu (Piaractus mesopotamicus), alimentados com rama de mandioca (Pádua et al 2009). …”