Effects of different carnitine isomers on growth feed utili8ation and body composition of shrimp. ZH0U Qi-Cun 1 ZHENG Shi-xuan 2

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1 13 1 Vol.13 No J0URNAL 0F SHANGHAI FISHERIES UNIVERSITY MarCh 2004!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! L mg / kg DL mg / kg L- 50mg / kg 100mg / kg 200mg / kg 300mg / kg 0.85g L- DL- P > mg / kg L- DL % 3.47% 3.55% P < 0.05 L- 200mg / kg 300mg / kg 7.09% 6.04% 5.72% P < 0.05 S963.1 A Effects of different carnitine isomers on growth feed utili8ation and body composition of shrimp ZH0U Qi-Cun 1 ZHENG Shi-xuan 2 1. Fisheries College Zhanjiang Ocean University Zhanjiang China 2. Aqua Feed Technology Center of Zhanjiang Zhanjiang China Abstract Two growth trials were ConduCted to investigate the effects of DL-Carnitine and L-Carnitine on the growth feed utilization and body Composition of shrimp Penaeus monodon and Penaeus vannamei. DL-Carnitine and L- Carnitine were added with different supplement doses 0 100mg / kg 200mg / kg 300mg / kg diet in the shrimp Penaeus monodon and L-Carnitine with different supplement doses 0 50mg / kg 100mg / kg 200mg / kg 300mg / kg diet in the diet of shrimp of Penaeus vannamei. TripliCate groups of 40 shrimp initial body weight of 0.85g were fed by hand with experimental diets the growth trial lasted one month. The results showed that the supplementation of L-Carnitine or DL-Carnitine Can not increase the growth rate and improve feed utilization of Penaeus monodon and Penaeus vannamei P > In the trial of Penaeus monodon the lipid Content of whole body decreased significantly from 4.69% Control group to 3.47% and 3.55% respectively with supplementation of 300mg / kg DL-Carnitine or L-Carnitine P < In the experiment of Penaeus vannamei with the C qicunzhou@163. net

2 42 13 supplementation of 200mg / kg and 300mg / kg of L-Carnitine the lipid Contents of whole body were decreased significantly from 7.09% Control group to 6.04% and 5.72% respectively P < Key words Carnitine shrimp growth lipid Content of whole body L- D- L- D- L Krimberg GuleuitsCh 1927 Tomita SendJu 1948 Fraenkel L- BT 1952 Carter Carnitine 1959 L L- DL ~ g L- DL mL / kg L mg / kg 1 0.3m % ~ 10% 5 / d % 30d 24h 27.0 士 士 % 1h 200 % = / % = 100 / FC = / + - PER % = + - /

3 1 43 Tab. 1 1 Ingredients and pro1imate composition of the e1perimental diets % C L DL mg / kg A 12000IU D 6000IU E 44 K 3.6 B 1 6 B 2 20 B 5 40 B 6 14 B mg / kg Cu 53 Fe 60 Zn 100 Mn 60 Se 0.44 Co 50 I ExCel for Windows DunCan s P < 0.05 P < L- DL- 2 L- DL- L- DL- P > L- 3 L- P > L- DL- 4 L- DL- P > 0.05 L- DL- L- 300mg / kg DL- 300mg / kg

4 44 13 P < 0.01 Tab. 2 2 L- DL- Effect of L-carnitine and DL-carnitine on growth and feed utili8ation of Penaeus (onodon mg / kg g % % 士 士 士 士 士 L 士 士 士 士 士 L 士 士 士 士 士 L 士 士 士 士 士 DL 士 士 士 士 士 DL 士 士 士 士 士 DL 士 士 士 士 士 F P Tab. 3 3 L- Effects of L-carnitine on growth and feed utili8ation of Penaeus anna(ei L- mg / kg g % % 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 F P Tab. 4 L- DL- Effect of L-carnitine and DL-carnitine on dry matter digestibility and composition of body of Penaeus (onodon mg / kg % % % % % 士 士 士 士 士 0.16 a L 士 士 士 士 士 0.02 a L 士 士 士 士 士 0.09 ab L 士 士 士 士 士 0.35 b DL 士 士 士 士 士 0.21 a DL 士 士 士 士 士 0.31 ab DL 士 士 士 士 士 0.08 b F P L- 5 L- P < mg / kg 300mg / kg P > 0.05

5 1 45 Tab. 5 5 L- Effects of L-carnitine on digestibility and composition of Penaeus anna(ei L- mg / kg % % % % % 士 士 士 士 士 0.23 a 士 士 士 士 士 0.21 ab 士 士 士 士 士 0.19 ab 士 士 士 士 士 0.32 b 士 士 士 士 士 0.08 b F P A A 13 ATP DL- L DL- L- DL- L- DL- L GH IGF L- > D- > DL P > Santulli 3 Gaylord Gatlin L- DL- 200mg / kg 1. J A. II C Santulli A D Amelio V. The effects of Carnitine on growth of sea bass Dicentrarchus labrax L fry J. Fish Biology RodehutsCord M. EffeCts of dietary supplemental dietary L-Carnitine on growth and body Composition of rainbow trout Oncorhychus mykiss fed high fat diets J. J Anim Physiol Anim Nutr

6 Ji H Bradley T M Tremblay G C. AtlantiC salmon Salmo salar fed L-Carnitine exhibit altered intermediary metabolism and reduced tissue lipid but no Change in growth rate J. Journal Nutrition Chatzifrtis S TakeuChi T Seikai T. The effect of dietary Carnitine supplementation on growth of red sea bream Pagrus major fingerlings at two levels of dietary lysine J. AquaCulture J Klaus B Simone S Chaim A et al. Growth performance and feed utilization response of Oreochromis niloticus Oreochromis aureus hybrids to L- Carnitine measured over a full fattening CyCle under CommerCial Conditions J. AquaCulture Gaylord T G Gatlin D M. Dietary lipid level but not L-Carnitine affects growth performance of hybrid striped bass Mornone chrysops Morone saxatilis J. AquaCulture Twibell R G Brown P B. EffeCts of dietary Carnitine on growth rates and body Composition of hybrid striped bass Mornone saxatilis M. chrysops J. AquaCulture J J Bremer J. Carnitine - metabolism and functions M. PhysiologiCal Reviews SChuhmaCher A Gropp J M. Carnitine a vitamine for rainbow trout J. Journal of Applied IChthyology J L- J J