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Agronomic traits, ensilability and nutritive value of five pearl millet cultivars grown in a Brazilian semi-arid region

Part of: AGS Millet Collection

Published online by Cambridge University Press:  14 October 2015

R. D. DOS SANTOS ,
A. L. A. NEVES ,
L. G. R. PEREIRA ,
L. E. SOLLENBERGER ,
J. A. S. RODRIGUES ,
J. N. TABOSA ,
R. S. VERNEQUE ,
G. F. OLIVEIRA ,
D. G. JAYME  and
L. C. GONÇALVES
R. D. DOS SANTOS*
Affiliation:
Embrapa Semi-Arid, Brazilian Agricultural Research Corporation (Embrapa), Petrolina, Pernambuco, Brazil Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 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
J. A. S. RODRIGUES
Affiliation:
Embrapa Maize and Sorghum, Brazilian Agricultural Research Corporation (Embrapa), Sete Lagoas, Minas Gerais, Brazil
J. N. TABOSA
Affiliation:
Agronomic Institute of Pernambuco (IPA), Recife, Pernambuco, Brazil
R. S. VERNEQUE
Affiliation:
Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation (Embrapa), Juiz de Fora, Minas Gerais, Brazil
G. F. OLIVEIRA
Affiliation:
Federal University of Sergipe, Aracaju, Sergipe, Brazil
D. G. JAYME
Affiliation:
Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
L. C. GONÇALVES
Affiliation:
Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
*
*To whom all correspondence should be addressed. Email: [email protected]
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Summary

Pearl millet (Pennisetum glaucum (L.) R.) could play an important role as a feed source for ruminants in arid and semi-arid zones of the world owing to its high yield and drought tolerance. The current paper assessed the agronomic characteristics, ensilability, intake and digestibility of five Brazilian pearl millet cultivars (IPA Bulk1BF, BRS 1501, CMS-03, CMS-01 and BN-2) in a typical Brazilian northeastern semi-arid climate. Forage was harvested at the dough stage of grain maturity (growth stage 86 according to the BBCH scale) and ensiled under laboratory and farm conditions. Apparent digestibility of the silages was determined using 25 Santa Inês male lambs. The cultivars CMS-01, CMS-03 and BN-2 out-performed the others in terms of dry matter (DM) and digestible DM yield/ha. At DM partitioning among plant tissues, the cultivar IPA Bulk1BF had a greater DM associated with panicles and one of the greatest concentrations of organic matter, lactic acid and in vitro dry matter digestibility among the five cultivars. The cultivar BRS 1501 had greater butyric acid concentration as well as one of the highest pH values. Silage produced from BN-2 not only contained greater acetic acid concentration, but also showed one of the greatest total volatile fatty acid concentrations. There were no differences in feed intake and digestibility of nutrients and fibre fractions across all cultivars. Silage made from BN-2 resulted in greater urinary excretion of nitrogen than those produced from BRS 1501. Under the conditions of the present study, the results obtained for production of DM and digestible dry matter, and the ratio of plant fractions, indicates the possible use of these cultivars for silage production in the Brazilian semi-arid region.

Type
Animal Research Papers
Information
The Journal of Agricultural Science , Volume 154 , Issue 1 , January 2016 , pp. 165 - 173
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Copyright
Copyright © Cambridge University Press 2015 

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