Diets with silage of branch cassava associated with in natura sugarcane in feedlot of cull ewes
DOI:
https://doi.org/10.35699/2447-6218.2022.38957Keywords:
Carcass, Diet, Dry matter intake, Ingestive behavior, SheepAbstract
The sugarcane has been used in animal feeding for its high production for providing lower production costs compared to the roughage. However, require supplementation with nitrogen sources, as branch cassava. Therefore, the aim of this study was to evaluate the performance carcass characteristics and eating behavior of cull ewes in feedlot with diets content sugarcane (SC), silage of branch cassava (SBC) and concentrate (CO), in the proportions (SC:SBC:-CO%): 50:25:25, 25:50:25, 50:50:0 e 25:75:0. Thirty two adult ewes were allocated in individual pens for 39 days, in a completely randomized design with four treatments and eight replicates. The evaluated characteristics were: dry matter intake, average daily gain, feed efficiency, hot carcass weight, carcass yield, time spent in ingestion, rumination and idleness. The final weight of ewes did not differ between treatments. Average daily gain was greater (P<0.05) for animals fed with 50:25:25. The dry matter daily intake and feed efficiency were lower (P<0.05) in diets without concentrate, 50:50:0 and 25:75:0. Weight and yield of hot carcass did not differ between animals fed with different proportions of sugarcane, silage of branch cassava and concentrate. There was no difference for the time spent with ingestion, rumination and idleness. The proportion of 50% sugarcane, 25% cassava silage and 25% concentrate was the best combination of feeds for the diet of cull ewes in finishing feedlots.
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