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Performance, agronomic traits, ensilability and nutritive value of pearl millet cultivar harvested at different growth stages

Part of: AGS Millet Collection

Published online by Cambridge University Press:  19 May 2020

R. D. Santos Open the ORCID record for R. D. Santos [Opens in a new window] ,
A. L. A. Neves ,
L. G. R. Pereira ,
L. E. Sollenberger ,
E. N. Muniz ,
E. Y. B. Souza ,
A. J. S. Sobral ,
N. V. Costa  and
L. C. Gonçalves
R. D. Santos*
Affiliation:
Embrapa Semi-Arid, Brazilian Agricultural Research Corporation (Embrapa), Petrolina, Pernambuco, Brazil
A. L. A. Neves
Affiliation:
Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation (Embrapa), Juiz de Fora, Minas Gerais, Brazil
L. G. R. Pereira
Affiliation:
Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation (Embrapa), Juiz de Fora, Minas Gerais, Brazil
L. E. Sollenberger
Affiliation:
University of Florida, Gainesville, Florida, USA
E. N. Muniz
Affiliation:
Embrapa Coastal Tablelands, Brazilian Agricultural Research Corporation (Embrapa), Aracaju, Sergipe, Brazil
E. Y. B. Souza
Affiliation:
Federal University of Sergipe, Aracaju, Sergipe, Brazil
A. J. S. Sobral
Affiliation:
Federal University of Sergipe, Aracaju, Sergipe, Brazil
N. V. Costa
Affiliation:
Federal University of Sergipe, Aracaju, Sergipe, Brazil
L. C. Gonçalves
Affiliation:
Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
*
Author for correspondence: R. D. Santos, E-mail: [email protected]
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Abstract

Pearl millet (Pennisetum glaucum (L.) R.) is an important crop for rainfed production systems and can play a significant role as a feed source for ruminants owing to its high yield and drought tolerance. It is well-established that the maturity stage can influence the chemical composition as well as the nutritional value of crops traditionally used for silage production, although quantitative evidence that this occurs with pearl millet under rainfed conditions is lacking. The current research assessed the agronomic characteristics, ensilability, intake and digestibility of a Brazilian pearl millet cultivar (IPA BULK1-BF) harvested at four different growth stages. Forage was harvested at 35, 50, 65 and 80 days after sowing and ensiled under laboratory and farm conditions. Apparent digestibility of the silages was determined using 24 male lambs. The results showed that dry matter (DM) and panicle and stem proportions increased with the advancement maturity. The silage evaluations showed that DM, total and non-fibrous carbohydrates and lignin concentrations increased, while crude protein, ADF and in vitro DM digestibility decreased with the increase in plant maturity. Additionally, the fermentation characteristics were improved with the increasing maturity. The digestion study showed that intake of DM and N as well as digestibility of DM and fibre fractions decreased, while lignin intake increased. The results obtained for the production of dry and digestible DM, the ratio of plant fractions and fermentation parameters indicate the possibility of harvesting pearl millet forage after 50 days after sowing for silage production in the Brazilian semi-arid region.

Keywords

Digestibilitydrought resistanceforagesemi-aridwater-use efficiency
Type
Animal Research Paper
Information
The Journal of Agricultural Science , Volume 158 , Issue 3 , April 2020 , pp. 225 - 232
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Copyright
Copyright © Cambridge University Press 2020

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