Affiliation:
1. Universidade Estadual Paulista
2. Universidade de São Paulo
Abstract
The objective of this study was to evaluate the agronomic characteristics, bromatological-chemical composition and digestibility of 11 corn cultivars (Zea mays) harvested at two cutting heights. Cultivars D 766, D 657, D 1000, P 3021, P 3041, C 805, C 333, AG 5011, FO 01, CO 9621 and BR 205 were evaluated when they were harvested 5 cm above ground (low) and 5 cm below the insertion of the first ear (high). The experiment was designed as random blocks, with three replicates, arranged in an 11 x 2 factorial scheme. Cultivars presented similar productions of forage dry matter and grains. Percentages of stalk, leaf, straw, cob and kernel fractions were different among cultivars, as well as dry matter content of the whole plant at harvest. Considering the whole plant, only the contents of gross energy, nitrogen in neutral detergent fiber, and in vitro neutral and acid detergent fiber digestibility did not differ among cultivars. Increase on the cutting height improved forage quality due to the reduction of stalk and leaf fractions and contents of cell wall constituents.
Subject
Animal Science and Zoology
Reference19 articles.
1. Using the kernel milk line to visually monitor rain maturity in maize;AFUAKWA J.J;Crop Science,1984
2. All corn silage is not created equal;ALLEN M,1990
3. Avaliação de cinco híbridos de milho (Zea mays, L.) em diferentes estádios de maturação: 1. Produtividade, características morfológicas e correlações;BELEZE J.R.F;Revista Brasileira de Zootecnia,2003
4. Facteurs de variation de la valeur nutritive du mais ensilage: INRA;DEMARQUILLY C;Production Animal,1994
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