Effects of nitrogen fertilizer on carbohydrate and protein fractions in pearl millet (<i>Pennisetum glaucum</i>) cultivars

Authors

  • Wilian H.D. Buso Instituto Federal Goiano, Campus Ceres, Ceres, GO, Brazil.
  • Aldi F.S. França Universidade Federal de Goiás – Escola de Veterinária e Zootecnia/Departamento de Produção Animal, Goiânia, GO, Brazil.
  • Eliane S. Miyagi Universidade Federal de Goiás – Escola de Veterinária e Zootecnia/Departamento de Produção Animal, Goiânia, GO, Brazil.
  • Reginaldo N. Ferreira Universidade Federal de Goiás – Instituto de Ciências Biológicas, Goiânia, GO, Brazil.
  • Daniel S. Corrêa Programa de Pós-Graduação em Ciência Animal – Universidade Federal de Goiás, Escola de Veterinária e Zootecnia/Departamento de Produção Animal, Goiânia, GO, Brazil.

DOI:

https://doi.org/10.17138/tgft(4)47-53

Abstract

Our research characterizes and quantifies carbohydrate and protein fractions of pearl millet (Pennisetum glaucum) cultivars at different nitrogen (N) rates and 2 sowing dates in Ceres, Goiás, Brazil. A randomized block design using 3 cultivars (ADR-7010, ADR-500 and BRS-1501), 4 N rates (0, 50, 100 and 200 kg N/ha) and 2 sowing dates (December 2010 and February 2011) was employed. Two harvests were undertaken for each sowing date, when plants were 0.70 m high. There were no significant differences among cultivars in either total carbohydrates or A+B1, B2 and C fractions of the carbohydrates. Total carbohydrates and their fractions were not affected by N rate nor sowing date. When protein fractionation was investigated, differences in fraction A were observed among cultivars but not in the B1, B2, B3 and C fractions. Nitrogen rate did not affect protein fractions, but sowing date did affect fractions B2 and B3. The significance of these findings in feeding animals is discussed.

Keywords: Chemical composition, Cornell Net Carbohydrate and Protein System, forage, nitrogen fertilization.

DOI: 10.17138/TGFT(4)47-53

How to Cite

Buso, W. H., França, A. F., Miyagi, E. S., Ferreira, R. N., & Corrêa, D. S. (2016). Effects of nitrogen fertilizer on carbohydrate and protein fractions in pearl millet (<i>Pennisetum glaucum</i>) cultivars. Tropical Grasslands-Forrajes Tropicales, 4(1), 47–53. https://doi.org/10.17138/tgft(4)47-53

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Published

2016-01-22

Issue

Section

Research Papers