Abstract
The aim of this study was to evaluate the replacement of Tifton 85 hay (Cynodon spp.) by maniçoba hay or silage (Manihot glaziovii Muell. Arg) on sheep intake and performance. Twenty-four male Santa Ines animals were used, with initial body weight of 19.77 ± 1.95 kg and average age of 160 days. The animals were distributed in three treatments (Tifton 85 hay-TH, Maniçoba hay-MH and Maniçoba silage-MS), arranged in a randomized blocks design, with 8 replicates per treatment. The feedlot period lasted for 71 days. The means of the variables were tested by Tukey’s test at 5% probability. Sheep fed MH presented higher dry matter intake (p > 0.05) than those fed TH (1.17 kg day-1 vs 1.06 kg day-1). Neutral detergent fiber intake was higher (p > 0.05) for MH-fed sheep (0.394 kg day-1) when compared to MS (0.340 kg day-1). The digestibility of total carbohydrates was higher (p > 0.05) for MH diet (0.71 g kg-1) than TH (0.67 g kg-1). The average daily gain and body weight at slaughter did not differ (p > 0.05) among treatments. Maniçoba hay or silage can replace Tifton 85 hay in sheep diets.
Highlights
IntroductionVieira et al (2008) support the inclusion of at least 300 g kg-1 Tifton 85 hay in the diet of small ruminants fed with spineless cactus to optimize the use of dietary energy and to promote ruminal health
Spineless cactus occupies a prominent position in the composition of ruminant diets and is the most cultivated cactaceous in the semiarid region of Brazil
The higher DMI of FM-fed animals in relation to FT can be attributed to the anatomical differences between the plant species
Summary
Vieira et al (2008) support the inclusion of at least 300 g kg-1 Tifton 85 hay in the diet of small ruminants fed with spineless cactus to optimize the use of dietary energy and to promote ruminal health. Other sources, such as soybean hulls (Souza et al, 2009), cotton seed (Costa et al, 2012) and sugarcane bagasse (Pessoa et al, 2013) have been suggested to be associated with spineless cactus. Arg) presents potential in animal feed (Backes et al, 2014)
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