Aynaz Aslaniyan; Farzad Ghanbari2; Javad Bayat Kouhsar; Behrouz Karimi Shahraki
Volume 18, Issue 2 , June 2016, , Pages 235-248
Abstract
This research was conducted to determine the effect of gamma ray (GR) (100 and 150 kGy), sodium hydroxide (50 g/kg DM) and calcium oxide (160 g/kg DM) on gas production parameters and in vitro digestibility of soybean straw. All treatments, except for the gamma ray (100 and 150 kGy) did not have gas ...
Read More
This research was conducted to determine the effect of gamma ray (GR) (100 and 150 kGy), sodium hydroxide (50 g/kg DM) and calcium oxide (160 g/kg DM) on gas production parameters and in vitro digestibility of soybean straw. All treatments, except for the gamma ray (100 and 150 kGy) did not have gas production up to 4 hours after incubation and there was a lag time. From 8 to 96 hours of incubation, the highest gas production was observed in sodium hydroxide + gamma ray (100 and 150 kGy) treatments (P< 0.05). Processing had no effect on gas production rate (P>0.05), but increased gas production potential (b) (P<0.05). The highest amount for b fraction was observed in sodium hydroxide + GR (100 and 150 kGy) treatment. Organic matter digestibility (OMD), metabolizable energy (ME), net energy (NE) and short chain fatty acids (SCFA) increased by processing (P<0.05). The highest increase was observed for sodium hydroxide (100 and 150 kGy). In vitro digestibility of the dry matter (DM) and organic matter (OM) was increased by GR, sodium hydroxide, and their combination (P<0.05). However, treatments with calcium oxide did not affect these traits. Except for GR at doses of 100 and 150 kGy, the other treatments reduced ammoniacal nitrogen (NH3-N) (P<0.05). Microbial mass production after 24 hours incubation showed decrease in calcium oxide and calcium oxide + GR treatments (P<0.05). Based on the results of this research, nutritional value of soybean straw improves with GR and sodium hydroxide treatments.
Hamid Reza Ansari Ranani; Hamir Reza Baghershah
Volume 13, Issue 1 , September 2011, , Pages 1-6
Abstract
This study was conducted to determine the effect of chemical methods for dewooling from skin on Moghani sheep skin and wool quality. Two treatments of sodium hydroxide (three and five percent) and two treatments of sodium sulfide (10 and 15 percent) rub to 100 skin and time spent to collect wool from ...
Read More
This study was conducted to determine the effect of chemical methods for dewooling from skin on Moghani sheep skin and wool quality. Two treatments of sodium hydroxide (three and five percent) and two treatments of sodium sulfide (10 and 15 percent) rub to 100 skin and time spent to collect wool from skin surface, fibers staple length and diameter recorded. Dewooled skins at thin-cross stage were evaluated by three leather experts for hair follicle, shape, elasticity, flesh, softness, water absorbability, fineness, wrinkleless, thickness and footage loss. Results indicated that the time spent to collect wool from sodium sulfide treated skins was significantly (P< 0.05) lower than sodium hydroxide treated skins. Lowest and highest time for dewooling was (80.3 ± 4.1 minutes) and (180.3 ± 5.3 minutes) for skins treated with 15% sodium sulfide and three percent sodium hydroxide respectively. Quality score for skin treated with 10 and 15% sodium sulfide and three and five percent sodium hydroxide were 30.2 (± 0.1), 31.2 (± 0.5), 37 (± 0.5) and 35.8 (± 1.0), respectively. In general, skins treated with sodium hydroxide have better quality than skins treated with sodium sulfide.