Changes in growth, nutrient utilization, intestine and liver among tinfoil barb (Barbonymus schwanenfeldii, Bleeker ۱۸۵۳) fry fed varying dietary fiber level
- سال انتشار: 1401
- محل انتشار: ششمین کنگره بین المللی تحقیقات شیلات و آبزیان
- کد COI اختصاصی: ICFAR06_023
- زبان مقاله: انگلیسی
- تعداد مشاهده: 125
نویسندگان
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, UPM Serdang, Selangor, ۴۳۴۰۰, Malaysia
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, UPM Serdang, Selangor, ۴۳۴۰۰, MalaysiaInternational Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia, ۷۰۱۵۰ Port Dickson, Negeri Sembilan, Mala
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, UPM Serdang, Selangor, ۴۳۴۰۰, MalaysiaInternational Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia, ۷۰۱۵۰ Port Dickson, Negeri Sembilan, Mala
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, UPM Serdang, Selangor, ۴۳۴۰۰, Malaysia
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, UPM Serdang, Selangor, ۴۳۴۰۰, MalaysiaInternational Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia, ۷۰۱۵۰ Port Dickson, Negeri Sembilan, Mala
چکیده
An ۸-week feeding trial was conducted to assess the effects of dietary fiber on growth, feed efficiency, nutrient utilization, intestinal α-amylase activity and liver and intestinal histology of Barbonymus schwanenfeldii fry. Five isonitrogenous and isocaloric diets were prepared using ۰, ۳, ۶, ۹ and ۱۲% α-cellulose as fiber source at the expense of tapioca starch. Each diet was randomly assigned to triplicate groups of ۲۰ fish (۰.۵۶±۰.۰۰ g). Results revealed that tinfoil barb fry tolerated up to ۱۲% dietary fiber without compromising their growth. Average daily feed intake and feed conversion ratio showed a decreasing trend with increasing fiber levels despite insignificant differences among the dietary groups. Meanwhile, protein efficiency ratio had a positive association with dietary fiber levels. Compared to control group, whole body proximate composition and protein and lipid retention of dietary fiber groups were not significantly different. However, fish fed ۹ and ۱۲ % fiber retained higher (p< ۰.۰۵) carbohydrate than those fed the control diet. None of the diets significantly altered whole body gross energy and its retention. Analysis of intestinal α-amylase showed higher activity (p< ۰.۰۵) in the midgut of fish except a higher activity in the hindgut of those fed ۹% fiber. Besides, there were not any histopathological signs on the gut and liver of fish fed ۰–۱۲ % dietary fiber. While the villus area remained uniform across the dietary groups, fish fed ۹% fiber had smaller (p< ۰.۰۵) hepatocytes and nuclei compared to control group. Compared with the control group, condition factor of fish fed dietary fiber was not significantly different, but those fed ۶% fiber had a higher (p< ۰.۰۵) viscerosomatic index among the dietary groups. In conclusion, tinfoil barb fry could tolerate up to ۱۲% dietary fiber with ۷.۲۵% starch.کلیدواژه ها
Barbonymus schwanenfeldii, Fiber; Starch, Specific growth rate, Nutrient retentionمقالات مرتبط جدید
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