A principal source of deposited lipid in phosphorus deficient red sea bream.

Abstract

To clarify a principal source of deposited lipid in phosphorus deficient red sea bream, Chrysophrys major, the effect of dietary phosphorus level on the absorption of dietary lipid and the effects of dietary carbohydrate and lipid levels on lipid content of the carcass were examined.

Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus

“…It is influenced by many factors including water chemistry (Bowser et al, 1989), feed intake (Sauer and Haider, 1979), temperature (Sauer and Haider, 1977;Sakaguchi and Hamaguchi, 1979;Lie et al, 1988) and life stage (Johnston et al, 1994). Contrary to our results, Shearer and Hardy (1987) reported plasma ALP activity in rainbow trout was not significantly affected by feeding phosphorus sufficient and deficient diets (P b 0.05); however, Sakamoto and Yone (1980) found a low phosphorus intake by red sea bream increased plasma ALP activity. Since the importance of plasma ALP in fish nutrition, it is necessary to assess their variability with respect to physiological or environmental factors and determine the normal ranges of variation under different levels of such factors.…”

Effect of different levels of phosphorus on growth and mineralization in African giant catfish <i>Heterobranchus bidorsalis</i> (Geoffrey Saint Hillarie, 1809)

“…Onishi et al (1981) observed that P deficiency in carp accompanied accumulation of lipid in muscle and viscera, and increase in the activity of the hepatopancreatic enzyme. In Sakamoto and Yone (1980) high lipid was deposited in carp fed diet deficient in P. Similarly, Chavez-Sanchez et al (2000) reported inverse relationship between carcass lipid levels and dietary P. Increase in carcass ash as observed from the study supports the work of Chavez-Sanchez et al (2000) which explained that bone ash and scale mineralization in American cichlid are highly correlated with P level in the diet. Andrews et al (1973) determined that a P deficiency produced lower bone and ash in channel catfish while Ketola (1975) described that supplemeantary P in the diets significantly increased bone ash content in Atlantic salmon.…”

Primary responses of rainbow trout to dietary phosphorus concentrations

“…The metabolic effect of dietary P restriction has been little researched in fishes; however, the accumulation of lipids in tissues by feeding fish with P‐deficient feeds ( Ogino & Takeda 1976, 1978; Sakamoto & Yone 1978, 1980; Eya & Lovell 1997) and the results of this study suggest that fish and higher animals may have similar metabolic responses to P deficiency. Feeding fish with P‐deficient diets for any extended period and determining clinical deficiency signs were beyond the scope of this study.…”