Search Result of "Prasert Sitasit"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:การเปรียบเทียบประสิทธิภาพของคาร์โบไฮเดรตชนิดต่างๆ เพื่อเป็นแหล่งพลังงานของปลาดุกลูกผสม

ผู้เขียน:Imgวิมล จันทรโรทัย, Imgดร.พัฒนี จันทรโรทัย, รองศาสตราจารย์, ImgPrasert Sitasit, ImgThavee Viputhanumas

สื่อสิ่งพิมพ์:pdf

Abstract

Seven isocaloric diets (4.6 kcal/g.) with approximately 35% protein and 44.3% carbohydrate from either sucrose, dextrin, corn starch, wheat flour. Rice starch, glutinuos rice starch and manoic starch were used to compare on their efficacy as energy sources for hybrid Clarias catfish. The diets were fed to apparent satiation twice daily to three replicates of 20 fish (3 g each) kept in 80-L glass aquaria for 4 weeks. Specific growth rate of fish fed with wheat flour diet (9.33%/d) was superior (P<0.05) to those of fish fed with other diets (8.2-8.8%/d), which were not significantly different (P>0.05). Feed conversion ratio (1.0-1.4), protein efficiency ratio (2.0-2.6), protein gain (33-43%), energy gain (22-33%) and carcass compositions for all dietary treatments did not differ (P>0.05) The study was concluded that wheat flour is the best for promoting growth of hybrid Clarias catfish. This is possibly due to higher protein content (13-14%) of wheat flour per se. Besides wheat flour, hybrid Clarias catfish can equally utilize sucrose, dextrin, corn starch, glutinous rice starch and manoic starch as energy sources with high efficacy.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 030, Issue 1, Jan 96 - Mar 96, Page 56 - 63 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:อัตราส่วนสูงสุดของคาร์โบไฮเดรตจากปลายข้าวดิบต่อลิปิดในอาหารปลาดุกลูกผสม

ผู้เขียน:Imgวิมล จันทรโรทัย, ImgPrasert Sitasit, ImgSiriporn Rajchapakdee

สื่อสิ่งพิมพ์:pdf

Abstract

Five semipurified palletized diets, diets 1, 2, 3, 4 and 5 contained raw broken rice as a carbohydrate source at the inclusion rate of 30.0, 37.0, 45.0, 52.5 and 60.0%, respectively. The diets were used to determine the maximum dietary level of raw broken rice for hybrid Clarias catfish (Clarias macrocephalus x C. gariepinus). All diets were isonitrogenous with 33% protein and were isocaloric with gross energy (GE) of 428-439 Kcal/100g. The GE of each diet was adjusted isocaloricly by balancing the broken rice and squid liver oil-lard mix so that the diets provided carbohydrate to lipid ratios (CHO:L) of 2.54:1, 3.38:1, 6.61:1, 11.23:1, and 20.24:1, respectively. The diets were fed Ad libitum twice daily for 60 days to 22.0 g hybrid Clarias catfish housed within 200-L indoor circular fiberglass tanks. Total dry feed and protein consumption of the fish fed diet 1 was less than those of fish fed diets 2, 3, 4 and 5 (P<0.05). Weight gain of fish fed diets 2, 3, 4 and 5 was not different (P>0.05) but they were superior to that of fish fed diet 1 (P<0.05). Feed efficiency ratio (FE) was poorest for diet 1 and was highest for diet 2 which was also higher than the FE for diet 5 (P<0.05) but not for diets 3 and 4 (P>0.05). Protein efficiency ratio and protein retention showed the same statistical finding as did FE. The body energy retention of fish fed diets 2, 3, and 4 was higher than that of fish fed diets 1 and 5 (P<0.05). Hepatosomatic index of fish fed diet 1 was lower than that of fish fed diet 5, but the inverse finding was observed for liver lipid deposition. The study suggested that a diet for hybrid Clarias catfish with the indicated protein and energy levels could contain up to 50% of native carbohydrate from raw broken rice which is equivalent to 52.5% of raw broken rice by weight, However, the lipid level in such diet should not be less than 4.4% to maintain CHO:L of 11.23:1

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 028, Issue 1, Jan 94 - Mar 94, Page 49 - 57 |  PDF |  Page