Amir Arsalan Kamali; Mahmoud Dashtizadeh; Abdolmahdi Kabirifard
Volume 26, Issue 2 , July 2019, , Pages 282-291
Abstract
This research was carried out to determine the nutritive value of Stipa capensis in various growth stages at three rangeland areas during November 2011 to April 2012. The samples of S. capensis were taken randomly in three stages including vegetative, flowering and maturity (seed production). Samples ...
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This research was carried out to determine the nutritive value of Stipa capensis in various growth stages at three rangeland areas during November 2011 to April 2012. The samples of S. capensis were taken randomly in three stages including vegetative, flowering and maturity (seed production). Samples from each stage of each area were determined for DM, CP, Ash, EE, NDF, ADF, ADL, GE, Ca, P, K, Mg, Na, Fe, Mn, Zn, Cu, DMD, OMD and DOMD. Data were statistically analyzed in a Randomized Complete Blocks Design with three treatments (growth stages) and three blocks (rangeland areas). Results showed that CP, Ash, NDF, ADF and ADL content of S. capensis at different growth stages were significantly different (P<0.05) and CP content of S. capensis decreased with growth advancement but its NDF, ADF and ADL content increased. DM, EE and GE content of S. capensis at three growth stages were not different significantly (P<0.05). Also, P, K, Mg, Zn, Cu, DMD, OMD and DOMD content of S. capensis decreased with growth advancement but its Na increased significantly (P<0.05). This plant in vegetative and flowering stages can supply a great part of protein and energy requirement of different groups of sheep and goat at rangeland areas. Ca, K, Mg, Na, Fe and Mn content of S. capensis at different growth stages were higher than those of critical limits for sheep and goat; however, the P and Cu content at three stages, and Zn concentration at flowering and maturity stages were less than those of critical limits. Totally, this plant species is suitable for livestock grazing specially at vegetative and flowering stages and could be recommended in similar rangelands.
Arsalan Kamali; Amirdavod Forouzandeh; Seyed Noraddin Tabatabaie; Ahmadreza Ranjbari; Farhad Fakhri
Volume 21, Issue 4 , March 2015, , Pages 708-717
Abstract
This research was aimed to determine the nutritive value of Cenchrus ciliaris, as one of the dominant range species of Bushehr province, as well as studying the changes during the growth stages. The study was conducted in three rangelands (Gomaroon, Kaki and Bashi) during December 2009 to May 2010. Sampling ...
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This research was aimed to determine the nutritive value of Cenchrus ciliaris, as one of the dominant range species of Bushehr province, as well as studying the changes during the growth stages. The study was conducted in three rangelands (Gomaroon, Kaki and Bashi) during December 2009 to May 2010. Sampling was performed randomly at vegetative, flowering and seeding stages and 10 samples were collected from each area. Then, samples were dried and ground to measure DM, CP, Ash, EE, NDF, ADF, ADL, GE, Ca, P, K, Mg, Na, Fe, Mn, Zn, Cu, DMD, OMD and DOMD in the laboratory. A completely randomized design with three treatments (stages) and three replications (areas) was used for statistical analysis. Results showed that NDF and ADF increased with the growth progress but CP, P, K, DMD, OMD and DOMD decreased significantly (P<0.05). The CP content of C. ciliaris, measured at vegetative and flowering stages, can supply the maintenance requirement for a 50-kg mature sheep, a 50-kg mature ewe in the first 15 weeks of pregnancy, and a 40-kg goat. The content ofCa, K, Mg, Na, Fe and Mn, measured for C. ciliaris at different growth stages, were more than critical level for sheep and goats; however, the content of P and Zn at three stages, and the content of Cu (except vegetative stage) were less than critical level. Totally, C. ciliaris is suitable for grazing livestock, especially at vegetative and flowering stages, and if possible, it should be proliferated in similar rangelands.