Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
Brewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment water or biofloc environmentNguyen Huu Yen NhiFaculty of Veterinary Medicine and Anima! Science Department of Animal Nutrition and Management UppsalaDoctoral thesisSwedish University of Agricultural Sciences Uppsala 2019Acta Universitatis agriculturae Sueciae84.1395833333333Cover: Tilapia and giant Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment freshwater prawns next to imhoff cone with biofloc inside (photo: Nguyen Huu Yen Nhi, 2017)ISSN 1652-6880ISBN (print version) 978-91-7760-360-3ISBN (Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
electronic version) 978-91-7760-361-0©2019 Nguyen Huu Yen Nhi, UppsalaPrint: SLU Service Repro. Uppsala 2019Brewer’s yeast as a protein source in the Brewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment hesis investigated the effects of dietary protein replacement of fishmeal or soybean meal with spent brewer's yeast (SBY) in fanned tilapia and giant freshwater prawns. The effect of rearing tilapia and prawn in two different rearing systems, clear water recirculating aquaculture system (CW-RAS) and Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment biofloc recirculating aquaculture system (Bio-RAS), were also investigated.The fish reared in Bio-RAS displayed higher growth, a higher protein efficBrewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
iency ratio and a lower feed conversion rate than fish reared in CW-RAS. Tills difference between systems was not as apparent in the growth and proteiBrewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment fishmeal with SBY. The growth performance of prawns was not significantly different between any dietary treatments in Bio-RAS or CW-RAS. Significant differences were only found between brewer’s yeast replaced fishmeal at 60% in a CW-RAS and at 40% in Bio-RAS.Tilapia reared in CW-RAS with replacemen Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment t of fishmeal with SBY showed a significantly (p<0.05) lower weight gain, daily weight and specific growth rate than fish in Bio-RAS when all diet groBrewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
ups per treatment was combined. However, at diet group level this difference was significant only in the 100% replacement group of CW-RAS when compareBrewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment respectively. The study demonstrated that tilapia reared in the Bio-RAS had a higher capacity to compensate for a reduction in dietary protein levels, as demonstrated by a higher growth rate than in fish reared in CW-RAS. The apparent digestibility of crude protein by tilapia was high in diets with Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment high crude protein, but there was no difference between the two rearing systems.SBY replace up to 100% of soybean meal without a significant reductionBrewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
in tilapia growth. Tilapia exhibited the best performance when fed a diet where 30% soybean meal was replaced with SBY.Tins thesis concludes that SBYBrewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment protein requirement of tilapia can be reduced if reared in a high-density microbial environment, i.e. a so-called Bio-RAS.Keywords: Nile tilapia, spent brewer's yeast. Bio-RAS. CW-RAS, biofloc, freshwater prawns, alternative protein, growth performance, recirculation system, soybean mealAuthor's add Brewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment ress: Nguyen Huu Yen Nhi,Department of Aquaculture, An Giang University. P.O. Box: 18. Ung Van Khiem, Dong Xuyen ward. Long Xuyen city. An Giang proviBrewer’s yeast as a protein source in the diet of tilapia oreochromis niloticus and freshwater prawns macrobrachium rosenbergii reared in a clear water or biofloc environment
nce. Viet Nam.Email: nhynhi@agu.edu.vn or nguyenhuuyennhi@gmail.comDedicationTo my parents with my respectful gratitude, My husband Nguyen Thanh Tam.MBrewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clear Brewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticusj and freshwater prawns (Macrobrachium rosenbergii) reared in a clearGọi ngay
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