摘要:

ABSTRACTData from two protein‐energy requirement experiments demonstrated that the addition of a lipid supplement or glucose to penaeid shrimp diets suppressed growth, whereas the addition of starch enhanced growth. The optimal dietary level of protein appeared to be around 30%. Data from an isotope incorporation study revealed that14C from labeled dietary proteins, protein hydrolysates, tripalmitin, palmitic acid, starch and glucose were digested, absorbed and incorporated into shrimp muscle tissue. Incorporation from labeled proteins was at a three times faster rate than from protein hydrolysates, and14C from palmitic acid was incorporated at twice the rate as from tripalmiti

ISSN:1043-5166    

DOI:10.1111/j.1749-7345.1972.tb00082.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTOther investigators have suggested that detritus enriched by the micro‐organisms that degrade it is a major component of the natural diet of penaeid shrimp. This paper describes pink shrimp (Penaeus duorarum) feeding experiments in earthen ponds and concrete tanks, with wheat bran used to produce an artificial detritus food for the shrimp. Wheat bran and other foods are compared, and the effects of food type, feeding methods, and certain aspects of water quality on growth, survival and yield of pink shrimp are evaluated.The artificial detritus method of feeding in the culture of shrimp is much simpler than the feeding of pelleted or other diets directly to shrimp, since the former does not depend upon monitoring of growth rates and population densities to determine feeding rates. Wheat bran is added to unaerated tanks or ponds at constant rates that do not cause oxygen depletion. We have added wheat bran to ponds at daily rates up to 35 kg per ha without causing obvious problems.With wheat bran feeding, it seems possible to rear postlarval pink shrimp in ponds or tanks to about 4 g (live bait size) in 3 months and at stocking densities as high as 100,000 per ha, and with survival as high as 90%. Our investigations of the artificial detritus feeding method will continue with the goal of developing methods for producing food shrimp profitabl

ISSN:1043-5166    

DOI:10.1111/j.1749-7345.1972.tb00083.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTDuring experimentation designed to determine the requirements for sexual maturation of brown shrimp (Penaeus aztecus) a series of diets were tested on juvenile and subadult shrimp. These diets were formulated from a series of compounds expected to provide the essential nutrients for growth and sexual maturation. Both natural and prepared foods (i.e., foods which have been processed for storage at room temperature) were tested. The ingredients of the foods tested and the processing methods used to stabilize the foods are described.Growth rates and amounts of food consumed for shrimp reared on these diets are discussed, and growth is compared with that observed for wild shrimp. Implications of these growth rates to shrimp cultures are discussed. Experimental stunting of juvenile shrimp was investigated as a means of storing excess animals temporarily.

ISSN:1043-5166    

DOI:10.1111/j.1749-7345.1972.tb00084.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

ISSN:1043-5166    

DOI:10.1111/j.1749-7345.1972.tb00085.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY