Journal of Food, Agriculture and Environment

Vol 9, Issue 2,2011
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Forage quality of foxtail millet (Setaria italica) cultivars at different phenological stages in Karaj region, Iran


Sadegh Mohajer 1*, Majid Valipoor Dastenai 2, Rosna Mat Taha 1

Recieved Date: 2010-12-20, Accepted Date: 2011-03-27


The determination of forage quality is one of the most important factors essential to appropriate field management. The most important factor, effective on forage quality, is the growth stage; by studying on phonological stages of the forage, suitable grazing time can be determined. Since different cultivars of forage crops have different feed qualities in each of their growth stages, for the purpose of investigation of genetic diversity of forage yields and their quantitative characters, we studied three foxtail millet cultivars, namely KFM1, KFM6 and KFM9 in three phonological stages including vegetative growth stage, flowering stage and seeding stage by use of a factorial experimental design with a complete block basic design with 3 replications in Karaj, Iran during 2008-9. Except for Acid Detergent Fiber (ADF) and crude fibre percentage, the difference between the other feed quality indices as well as wet and dry yields, among the different cultivars and the three growth phases of the cultivars, were significant (P<0.01). Further, the interaction effect between different cultivars and also the phonological growth stages was statistically significant only in connection with wet and dry yield. Proportional to the development of growth stages, approximately in all cultivars, the crude protein percentage and digestive dry material percentage are decreased and the fibre content increased. In general, according to the measured indices, KFM1 had the highest feed quality and, taking into account its appropriate feed quality, was selected as the outstanding cultivar. The vegetative growth stage (1st phonological stage), from the point of view of feed quality indices, was higher than the other two stages (except for water soluble carbohydrates); but, considering relatively small forage energy difference between stages 1st and 2nd phonological stages, and also higher production and readiness of the fields (ranges) for grazing, the 2nd phonological stage (flowering stage) was selected as the best time for grazing (by use of grazing systems).


Foxtail millet, forage yield, forage digestibility percent, crude protein percent, growth stage

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 2
Category: Agriculture
Pages: 304-308

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