Flaking method affects the rate and extent of ruminal starch degradation in maize grains
سال انتشار: 1403
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 83
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شناسه ملی سند علمی:
JR_KLST-12-1_006
تاریخ نمایه سازی: 27 خرداد 1403
چکیده مقاله:
In this study, we investigated the effect of different processing methods (steam-flaking, micronized and micronized-flaking; F, M, and MF, respectively) of corn grains on various factors including water absorption index (WAI), damaged starch content (DSC), nutrient digestibility, gas production (GP), microbial crude protein (MCP) and effective utilizable crude protein (EUCP). Flaked treatments (F and MF) were used in whole, cracked and ground forms (۱.۵- and ۳-mm), while non-processed corn grains (G) and M were only ground. All MF treatments showed higher ruminal digestibility of dry matter (DM) and starch, GP, as well as increased MCP and EUCP compared to other treatments (P<۰.۰۰۱). The F treatment in the whole form and ground micronized corn showed significantly lower (P<۰.۰۰۱) ruminal digestibility of DM and starch, as well as GP and MCP. However, the above two treatments exhibited greater in vitro disappearances of DM and starch in the small intestine. It can be concluded that post-flaking of infrared radiated corn may induce severe ruminal degradation above that of steam flaking. Therefore, a flake density greater than ۰.۴۱ kg/L may be appropriate for micronized-flaked corn when used in its whole form to achieve optimum ruminal degradation and maximum digestibility of starch in the small intestine.
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نویسندگان
Rezvan Samsami
Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
Abbas Naserian
Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
Abdolmansour Tahmasebi
Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
Seyed Hadi Ebrahimi
Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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