Effects of Gamma Irradiation on Nutrient Composition, Anti-nutritional Factors, In vitro Digestibility and Ruminal Degradation of Whole Cotton SeedEffects of Gamma Irradiation on Nutrient Composition, Anti-nutritional Factors, In vitro Digestibility and Ruminal Degradation of Whole Cotton Seed
- Other Titles
- Effects of Gamma Irradiation on Nutrient Composition, Anti-nutritional Factors, In vitro Digestibility and Ruminal Degradation of Whole Cotton Seed
- Authors
- 함상욱; 손혜인; 김욱; 오영균; 손용석
- Issue Date
- 2013
- Publisher
- 한국축산학회
- Keywords
- Whole cotton seed; Gamma irradiation; Nutrient composition; Rumen degradability
- Citation
- 한국축산학회지, v.55, no.2, pp.123 - 130
- Indexed
- KCI
- Journal Title
- 한국축산학회지
- Volume
- 55
- Number
- 2
- Start Page
- 123
- End Page
- 130
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/105277
- ISSN
- 2672-0191
- Abstract
- Whole cotton seed (WCS) has become one of the major feed ingredients in TMR for dairy cattle in Korea, and WCS for feed use is mostly imported from abroad. Since this genetically modified oil seed is usually fed to the animal in raw state, its germination ability, if last long, often causes concerns about ecological disturbances. In the process of looking for effective conditions to remove germination ability of WCS this study had the objectives to evaluate the nutritional effects of gamma irradiation at doses of 8, 10 and 12 kGy on changes in nutrient contents, anti-nutritional factors, in vitro digestibility and ruminal degradability. No significant differences were found in proximate analysis of nutrients between raw WCS and gamma irradiated one. Glycine and threonine contents significantly increased when the WCS was exposed to gamma ray as compared to untreated WCS(p<0.05). As for fatty acid composition, no significant differences were observed with the irradiation treatment. Free gossypol in WCS was decreased(p<0.05) by gamma irradiation treatment. Of the 3 different levels of gamma irradiation, a dose of 12kGy was found to be the most effective in reducing free gossypol concentration. Results obtained from in situ experiment indicated that gamma irradiation at a dose of 10 kGy significantly(p<0.05) lowered rumen degradability of both dry matter and crude protein as compared with raw WCS. However, there were no significant differences in rapidly degradable and potentially degradable fractions of crude protein due to 10kGy gamma irradiation. Overall, this study show that gamma irradiation at a dose of 10kGy is the optimum condition for removing germination ability of WCS, and could improve nutritive value for the ruminant with respect to the decrease in both ruminal protein degradability and gossypol content of WCS.
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Collections - Graduate School > Department of Plant Biotechnology > 1. Journal Articles
- College of Life Sciences and Biotechnology > Division of Biotechnology > 1. Journal Articles
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