000			02844cab a2200349 a 4500
001			u182843
003			EAL
008			080823s2022 ua ss b eng d
040			_aEAL _cEAL
041			_aeng _bara
043			_af-ua
090			_aART JAPFPSU V11 No1 6
100	1		_aElsayed, Nourhan E. G. _934725
240	1	0	_aJournal of Animal, Poultry & Fish Production Suez Canal University, 2022 v. 11 (1) _h[electronic resource]
245	1	0	_aEffect of dietary protein levels on growth performance, feed utilization and economical evaluation of white shrimp larvae Litopenaeus vannamei _h[electronic resource]
246	1	5	_aتأثیر مستویات العلیقة من البروتین على النمو والاستفاده الغذائیة والتقییم الاقتصادي لیرقات الجمبري الفانمي
300			_a43 - 48 p.
347			_atext file _bPDF
504			_aIncludes reference.
520			_aThe present experiment was conducted to investigate the effects of five different protein levels (25%, 30%, 35%, 40% and 45%) on growth performance, feed utilization, survival and economic analysis of whiteleg shrimp, Litopenaeus vannamei larvae. The experiment was performed indoor at Invertebrate laboratory of National Institute Oceanography and Fisheries (NIOF), Suez governorate -Egypt. The experiment was carried out in 15 rectangular tanks (66*47*44 cm, 50 L) of reinforced with water salinity 20 ppt for 90-days. Triplicate groups of shrimp larvae with an initial weight 0.002g were fed twice a day at a feeding ratio of 14% from body weight (nit weight) and re-adjusted gradually to 5% at the end of the experiment. The results observed that the highest significant(p < 0.05) weight gain (%), specific growth rate, best feed conversion ratio values were reported with the shrimp fed 35% protein group. The same trend was observed for protein utilizing efficiency. Protein efficiency ratio was significantly affected by dietary protein level. The present results revealed that dietary crude protein of 35% for L. vannamei larvae may optimum in terms of growth performance, feed utilization and economic evaluation under these experimental conditions. Keywords: Litopenaeus vannamei, growth performance, feed utilization, survival (%), economic evaluation, white shrimp.
546			_aSummary in Arabic.
650		0	_aFish hatcheries
650		0	_aShrimps _xReproduction _97346
650		0	_aShrimps _xNutrition _934726
700	1		_aEid, A. E.
700	1		_aAli, Mervat A. M. _9969
700	1		_aSharawy, Zaki Z. _934727
700	1		_aElfeky, Amal _934728
773	0		_tJournal of Animal, Poultry & Fish Production Suez Canal University. _g2022.v.11(1) _x2636-2732 _7nnas _wu68741
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2022/JAPFPSU/1122/1/43.pdf _zFull Text Article.
942			_cAR _2alc
999			_c68747 _d68747