2014
DOI: 10.4025/actascianimsci.v36i3.21379
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Abstract: ABSTRACT. This study aimed to evaluate the effects of adding slow-release urea to replace conventional urea in the diet on carcass characteristics of feedlot sheep. We used 20 Santa Ines x SRD rams, with average body weight of 21.1±1.2 kg and average age of 120 days, distributed in a completely randomized design with 5 treatments. The replacement levels used as treatments were 0, 20, 40, 60, and 80%, composing diets of about 12% crude protein, with 50 % Tifton-85 hay and 50% concentrate. There was no influence… Show more

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Cited by 11 publications
(12 citation statements)
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“…The results for EBW, HCW and CCW in relation to the urea levels are in agreement with previous studies, which evaluated the levels of urea in the diet up to 1.2% (SOUZA et al, 2004b) and 1.95% (MAGALHÃES et al, 2006), and the replacing of conventional urea by slow-release urea (ALVES et al, 2014). On the other hand, Canbolat and Karabulut (2010) observed increased CCW with increased energy, protein and urea levels (0, 6, 12 and 18 g animal -1 d -1 ).…”
Section: Resultssupporting
confidence: 92%
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“…The results for EBW, HCW and CCW in relation to the urea levels are in agreement with previous studies, which evaluated the levels of urea in the diet up to 1.2% (SOUZA et al, 2004b) and 1.95% (MAGALHÃES et al, 2006), and the replacing of conventional urea by slow-release urea (ALVES et al, 2014). On the other hand, Canbolat and Karabulut (2010) observed increased CCW with increased energy, protein and urea levels (0, 6, 12 and 18 g animal -1 d -1 ).…”
Section: Resultssupporting
confidence: 92%
“…The average values for SW, EBW, HCW and CCW were 37.86; 33.21; 17.42 and 16.95 kg; and for BY, HCY, CCY and CL were 52.37; 45.92; 44.67 and 2.72%, respectively. Proper use of urea in ruminant feeding can promote the use of energy from carbohydrates and modify tissue deposition in carcasses (ALVES et al, 2014). Some studies have reported increased carcass weight when the protein level was raised, with linear increase until the inclusion of 1.4% of urea in the diet (MENDOZA JÚNIOR et al, 2007).…”
Section: Resultsmentioning
confidence: 99%
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“…The inclusion levels of SRU in the sheep feed were based on a literature review that showed that the inclusion of 0.4% of SRU in dairy cows did not alter nutrient intake and milk production (SOUZA et al, 2010). In addition, Alves et al (2014b) showed that the substitution of conventional urea by SRU in 80% of sheep feed led to a reduction in carcass yield and subcutaneous fat.…”
Section: Methodsmentioning
confidence: 99%