Effects of dietary phosphorus level on non-faecal phosphorus excretion from yellowtail (Seriola quinqueradiataTemminck & Schlegel) fed purified and practical diets

2009 ◽  
Vol 40 (2) ◽  
pp. 225-232 ◽  
Author(s):  
Pallab Kumer Sarker ◽  
Shuichi Satoh ◽  
Haruhisa Fukada ◽  
Toshiro Masumoto
2006 ◽  
Vol 19 (1) ◽  
Author(s):  
K. AMBASANKAR ◽  
S. AHAMAD ALI ◽  
J. SYAMA DAYAL

Six semi-purified diets were formulated with supplemented phosphorus levels of 0, 0.5, 1.0, 1.5, 2.0 and 2.5% at a fixed calcium level of 1.25% and the effect of dietary phosphorus on growth, FCR, body phosphorus and its excretion in shrimp Penaeus monodon was studied. The results of a 45 day feeding trial, in triplicate, on the juveniles of P. monodon (initial average live –weight 2.54 ±0.28g) had shown that phosphorus is indispensable in the diet and the best performance (147.3 and 154.5% increase in live-weight and 1.44 and 1.57 FCR) was recorded by the diet supplemented with 1.0 and 1.5% phosphorus which was significantly (P<0.05) higher than the performance of the other diets tested. Higher phosphorus supplementation suppressed growth and increased FCR. The shrimp maintained body phosphorus and calcium levels in a ratio of 1:3 irrespective of dietary levels of phosphorus. There was no significant change in the proximate composition of post feeding trial shrimp. Phosphorus excretion in faeces of P. monodon increased proportionately with dietary phosphorus while the excretion level far exceeded the body phosphorus level in the shrimp fed with diets having supplemented phosphorus level above 1.5%. Even the shrimp fed with 0% phosphorus diet had 0.10% phosphorus in their faeces. The phosphorus levels in shrimp feeds vis-a-vis its excretion into aquaculture environment have been discussed.


2015 ◽  
Vol 29 (7) ◽  
pp. 960-964 ◽  
Author(s):  
B. Zhang ◽  
C. Wang ◽  
Z. H. Wei ◽  
H. Z. Sun ◽  
G. Z. Xu ◽  
...  

1964 ◽  
Vol 82 (1) ◽  
pp. 111-114 ◽  
Author(s):  
E. R. Miller ◽  
D. E. Ullrey ◽  
C. L. Zutaut ◽  
J. A. Hoefer ◽  
R. W. Luecke

1971 ◽  
Vol 51 (2) ◽  
pp. 445-450 ◽  
Author(s):  
E. E. GARDINER

Two factorial experiments were conducted to compare the dietary calcium requirements of two breeds of chickens and to determine the relationship between breed, dietary phosphorus level, and dietary calcium levels. Both experiments used two breeds of chickens (broiler crossbreds and Single Comb White Leghorns), two levels of added dietary phosphorus (0.18 and 0.36%), and six levels of added dietary calcium (experiment 1: 0.2, 0.4, 0.6, 0.8, 1.2, and 1.4%; experiment 2: 0.0, 0.3, 0.6, 0.9, 1.2, and 1.5%). Criteria observed included body weight (4-week), feed efficiency, mortality, and percent bone-ash. Breed and calcium level had a consistent significant effect on body weight, feed efficiency, and percent bone-ash. The breed × calcium interaction was significant for all the criteria measured, indicating that the Leghorn and broiler-type chickens differ in their dietary calcium requirements.


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