AliReza Shabani Monazam; Mohammad Ali Norouzian; Mahdi Behgar; Azam Borzoie
Volume 24, Issue 3 , October 2022, , Pages 291-300
Abstract
This study was conducted to investigate the chemical composition and nutritional characteristics of corn seeds exposed to gamma ray and the effect of its silage feeding on performance of finishing male Zandi lambs. First, the germination characteristics of control and irradiated corn seeds with different ...
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This study was conducted to investigate the chemical composition and nutritional characteristics of corn seeds exposed to gamma ray and the effect of its silage feeding on performance of finishing male Zandi lambs. First, the germination characteristics of control and irradiated corn seeds with different dosages of gamma ray (25, 50, 100, 150 and 200 gray) were measured. After determining the appropriate dose, corn seeds were irradiated with gamma ray at 25 gray and cultivated in the field. At the end of the growth period, corn forage was harvested and ensiled in experimental and farm silages. In addition, the effects of feeding experimental silages on performance and blood metabolites of finishing Zandi lambs were determined. Experimental treatments were: 1) control; diet containing 20% non-irradiated corn silage and 2) diet containing 20% corn silage irradiated with 25 gray gamma ray. Irradiation with 25 dosage of gamma gray increased secondary roots, plumule and rootlet number in greenhouse condition as compared to other irradiation dosages (P<0.01). Irradiated corn had higher levels of soluble carbohydrates, soluble protein and chlorophyll content in the field condition compared to control group (P<0.01). Silage obtained from irradiated corn had higher crude protein content and lower pH compared to control (P<0.05). Feeding irradiated corn silage increased final body weight and average daily gain and improved feed conversion ratio of fattening lambs (P<0.05). Based on the results of the present study, irradiation of corn seeds with gamma ray improves corn silage quality and performance of fattening lambs.
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 ...
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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.