Effects of Cultivar and Maturity of Ensiled Corn Plant Fed With and Without Concentrates on the Performance of Group and Individually Fed Hereford and Angus Steers

Maize (Anjou 210), a density-sensitive genotype, was established at 5 and 15 plants/m 2 and produced crops containing 50 and 26% grain respectively. Prior to ensiling, the high and low grain crops contained 6-9 and 20-4% water-soluble carbohydrates in the dry matter respectively and were reduced to 0-4 and 1-6% of the dry matter in the silage. The high grain silage contained a lower concentration of acid-detergent fibre, cellulose, lignin, cell-wall constituents and organic acids than the low grain silage. These differences were not reflected in the in vitro digestible organic matter in the dry matter values which were similar in both silages.

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Composition Chimique, Digestibilite Et Ingestion Volontaire D’ensilages D’herbes Et De Mais Par Des Agneaux

Pelletier¹,

St‐Pierre²,

Comeau³

1976

Can. J. Anim. Sci.

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Chemical analysis, in vivo digestibility and voluntary intake measurements were used to determine the nutritive value of different crops made as silage for sheep. In the first experiment, grass silages contained less N-NH3 than corn–pea silage. Digestible energy intake of grass silage treated with formic acid was higher than that which was untreated. Digestibility, dry matter intake and the nutritive value index were higher for corn–pea silage than for treated or untreated grass silage. In the second experiment, six different silages were made. Corn was harvested at the milk and dough stages of growth and after a frost and was chopped at either 1.3 cm or 0.6 cm. Silage made with corn harvested after a frost and chopped at 1.3 cm and that made with corn harvested at the milk stage and chopped at 0.6 cm had higher N-NH3 content than the others. Fine chopping decreased digestibility of silages harvested at earlier maturity stages but increased the digestible energy of the corn silage harvested after a frost. Voluntary intake was greater with silages harvested at the later dates than with silage harvested at the milk stage.

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Effects of Cultivar and Maturity of Ensiled Corn Plant Fed With and Without Concentrates on the Performance of Group and Individually Fed Hereford and Angus Steers

Cited by 4 publications

References 7 publications

Chemical composition and animal performance of grass forage of varying maturity stored as hay or silage

Chemical composition and animal performance of grass forage of varying maturity stored as hay or silage

The development of plant components and their effects on the composition of fresh and ensiled forage maize: 3. The effect of grain content on milk production

Composition Chimique, Digestibilite Et Ingestion Volontaire D’ensilages D’herbes Et De Mais Par Des Agneaux

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