Intake, digestibility and performance of lambs fed with diets containing cassava peels

Abstract

Sheep farming is designated to economic exploitation, and dry matter intake is the most important factor that influences the performance of animal, thus seeking alternative foods. This study aimed to evaluate the effects of inclusion levels of cassava peel on intake, digestibility and performance of feedlot lambs. We used 32 crossbred lambs Santa Inês uncastrated, mean body weight of 21 ± 1.5 kg. Treatments were arranged in a randomized design to animals, with inclusion levels of cassava peel (0, 10, 20, 30%) in the diet dry matter and forage cassava leaf hay. During 70 days, there have been weighing the food provided, leftovers, and animals, and feces collection. The intake of dry matter (DMI), organic matter (OMI), crude protein (CPI), ether extract (EEI), neutral detergent fiber corrected for ash and protein (NDIap), total carbohydrates (CTI), non-fiber carbohydrates (NFCI), total digestible nutrients (TDNI), as well as DMI and NDFap/kgCP, DMI and NDFIap/PC 0.75 levels have not been affected by the inclusion of cassava peel. Similar results for DM digestibility, NDF, CP, MO, CT and the TDN. DEE had a growing linear effect whereas DNFC presented a quadratic effect. Average daily gain (ADG), feed conversion (FC), initial body weight (BWinitial), final body weight (BWfinal), warm carcass weight (WCW) and warm carcass yield (WCR) showed no changes. It is concluded that the peel cassava may be included in diet until 30%, without change dry matter intake and animal performance.Index terms: Average daily gain, nutrition, sheep. RESUMOA criação de ovinos é designada à exploração econômica,e a ingestão de matéria seca é o fator mais importante que influencia o desempenho animal, buscando, assim, alimentos alternativos. Objetivou-se avaliar os efeitos dos níveis de inclusão da casca da mandioca sobre o consumo, digestibilidade e desempenho de cordeiros confinados. Foram utilizados 32 cordeiros mestiços Santa Inês, não castrados, peso corporal médio de 21 ± 1,5 kg. Os tratamentos foram distribuídos em delineamento inteiramente casualizado aos animais, com níveis de inclusão da casca de mandioca(0, 10, 20, 30%) na matéria seca da dieta, e o volumoso o feno da parte aérea de mandioca. Durante 70 dias, realizaram-se pesagens dos alimentos fornecidos, sobras, e animais, e coleta de fezes. O consumo de matéria seca (CMS), matéria orgânica (CMO), proteína bruta (CPB), extrato etéreo (CEE), fibra em detergente neutro corrigida para cinza e proteínas (CFDNcp), carboidratos totais (CCT), carboidratos não fibrosos (CCNF), nutrientes digestíveis totais (CNDT), bem como CMS e FDNcp/kgPC, CMS e CFDNcp/PC 0,75 não foram alterados pelos níveis de inclusão da casca de mandioca, resultados semelhantes para digestibilidade aparente MS, FDNcp, PB, MO, CT e os valores de NDT. A DEE teve efeito linear crescente e DCNF efeito quadrático. O ganho médio diário (GMD), conversão alimentar (CA), peso corporal inicial (PCi), peso corporal final (PCf), peso de carcaça quente (PCQ) e rendimento de carcaça quente (RCQ) não apresentaram alter...

Effects of cassava and yam peel meals on carcass traits and economics of production of finishing broilers.

“…The crude protein (CP) content in the present study is highly comparable with 5.49% reported byOloruntola et al (2016). The proximate composition for the cassava peel meal is in agreement with the reported values ofOloruntola et al (2016),Jiwuba et al (2016a) andGuimarães et al (2014). The proximate composition of the YPM is comparable with the reported values ofEzieshi and Olomu (2011).Sustainability, Agri, Food and Environmental Research,, 7(3), 2019: 221-229 http://dx.doi.org/10.7770/safer-V0N0-art1730 225…”

Rumen parameters of sheep fed cassava peel as a replacement for corn

“…In the same way, Menezes et al (2004) verified that the replacement of corn with cassava peel promoted decrease in the nutrient intake in goats, attributed to the high NDF content (549-610 g/kg DM) in the diets, associating this fact to lowest passing rate of the NDF in relation to the others dietary constituents, promoting rumen-reticulum filling. On the other hand, Guimarães et al (2014) did not verify changes on intake and digestibility of DM using cassava peel in the diets of lambs, due to the lower content of fiber (227 g NDF/kg DM), but in this case the corn was partially replaced, using up to 30% of inclusion of cassava peels, on DM basis. According to this authors, the great potential of NDF degradation from cassava peel was probably the key determinant that prevented the fiber source from causing physical limitations to DM intake.…”

Noug Seed (Guizotia abyssinica) Cake Substituted with Dried Mulberry (Morus indica) and Vernonia amygdalina Mixed Leaves’ Meal on Growth Performances of Bonga Sheep at Teppi, Ethiopia

“…This might be due to that treatments containing NSC had reduced rumen retention time by increasing the outflow rate and stimulating the intake than sole mulberry and Vernonia mixed leaves' meal. Moreover, the physical and chemical characteristics of the feed can positively or negatively affect the intake [ 35 ]. The observed increase in DM and OM as a result of increasing the level of substitutions of mulberry and Vernonia mixed leaves' meal up to 75% in the present investigation agrees with the finding of Kedir [ 36 ] who noted greater DM and OM intakes of diets comprising Vernonia supplement in growing Somali goats fed with Catha edulis leftover.…”

“…The variation in ADG might be resulted from sheep supplementation with NSC that had better DM and OM intake and nutrient digestibility than in T5. The level of intake and digestibility of experimental diets could determine animals' performances [ 35 ].…”