Milheto em substituição ao milho na dieta de novilhos confinados
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Data
2014-08
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Resumo
This study aimed to assess the bioeconomic performance of feedlot steers fed diets with high concentrate
(80%) containing different levels of grounded grain of millet as a replacement for grounded corn grain.
We used 89 European-zebu crossbred bulls, with initial average weight of 317.8±15.1kg and average
initial age of two years, randomly assigned to diets with different levels of substitution of corn by millet
(0, 33, 66 and 100%).The animals were allocated in 16 collective pens. The experimental design was
a completely randomized design with four treatments and four replicates (pens). The nutrient intake, except neutral detergent fiber and non-fiber carbohydrates, did not differ between the diets tested
(P>0.05). The average daily weight gain, body weight and final body codition score were not affected
(P>0.05) by increasing the level of millet in the diet. The feed conversion increased 0.0048 kg of dry
matter/kg of weight gain for each percentage point of millet in the diet. The total cost decreased linearly
(P<0.05) with increasing the level of millet in the diet, reflecting the linear reduction in feed cost. As
a result, the profit of finishing feedlot steers increased R$ 0.675 for each percentage point of millet in
replacing corn. The millet can replace corn in diets with high concentrate for feedlot cattle, enabling
reduction of production cost and increasing profits.
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Palavras-chave
Custo, Ganho de peso, Integração lavoura-pecuária, Receita bruta, Cost, Crop-livestock integration, Gross income, Weight gain
Citação
SILVA, Alexey Heronville Gonçalves da; RESTLE, João; MISSIO, Regis Luis; BILEGO, Ubirajara Oliveira; FERNANDES, Juliano José de Resende; REZENDE, Pedro Leonardo de Paula; SILVA, Rodrigo Medeiros da; PEREIRA, Marcela Luzia Rodrigues; LINO, Fabíola Alves. Milheto em substituição ao milho na dieta de novilhos confinados. Semina: ciências agrárias, Londrina, v. 35, n. 4, p. 2077-2094, jul./ago. 2014.