scholarly journals Effects of dietary energy content on the voluntary feed intake and blood parameters of sea bass (Dicentrarchus labrax L.)

2003 ◽  
Vol 2 (3) ◽  
pp. 181-189 ◽  
Author(s):  
Edo D’Agaro ◽  
Domenico Lanari
Keyword(s):  
Feed Intake ◽  
Energy Content ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Blood Parameters ◽  
Dietary Energy ◽  
Voluntary Feed Intake

scholarly journals The influence of different dietary energy content and feeding regimes on growth and feed utilization of European sea bass (Dicentrarchus labrax, L.)

2009 ◽  
Vol 8 (sup2) ◽  
pp. 842-844 ◽  
Author(s):  
Alessio Bonaldo ◽  
Anna Badiani ◽  
Paolo Fagioli ◽  
Ramon Fontanillas ◽  
Wolfgang Koppe ◽  
...  
Keyword(s):  
Energy Content ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Feed Utilization ◽  
Dietary Energy ◽  
European Sea Bass ◽  
Feeding Regimes

scholarly journals Using different levels of energy and protein and their effects on bodyweight and blood chemistry of ostriches

2021 ◽  
Author(s):  
Tahereh Nikravesh-Masouleh ◽  
Alireza Seidavi ◽  
Magdalena Solka ◽  
Mohammad Dadashbeiki
Keyword(s):  
Weight Gain ◽  
Total Cholesterol ◽  
Feed Intake ◽  
Experimental Period ◽  
Blood Chemistry ◽  
Blood Parameters ◽  
Bodyweight Gain ◽  
Transferase Activity ◽  
Dietary Energy ◽  
Protein Levels

AbstractTo determine the effect of different dietary energy and protein levels on bodyweight and blood chemistry, 36 ostriches at 2 to 9 weeks of age for feeding conditions and 18 for blood chemistry parameters was used. The birds were divided into six treatment groups. Energy and protein levels of diet were 2400 and 2600 kcal/kg and 20%, 22%, and 24%, respectively. The feed intake and bodyweight gain were determined a weekly. Blood chemical parameters including glucose, HDL, LDL, total cholesterol, triglycerides, total protein, albumin, globulin, aspartate amino-transferase and alanine amino-transferase activity were determined. The highest weight gain during the whole experiment was observed in ostriches offered 2400 kcal · kg−1 dietary energy and 20% protein. The lowest level of total cholesterol and protein was observed in treatment V (2600 kcal · kg−1 dietary energy and 22% protein). The lowest level of glucose and triglycerides was noted after treatment I. The highest albumin and globulin concentrations were in treatment III (2400 kcal · kg−1 dietary energy and 24% protein) and treatment II (2400 kcal · kg−1 dietary energy and 22% protein), respectively. The energy level had no effect (P < 0.05) on feed intake and weight gain in all experimental period. The results of this study showed that with increasing energy and protein levels, most blood parameters increased in ostriches but total cholesterol did not.

AN EVALUATION OF THE RELATIONSHIPS BETWEEN DIETARY PARAMETERS AND RUMEN LIQUID TURNOVER RATE

1981 ◽  
Vol 61 (1) ◽  
pp. 91-96 ◽  
Author(s):  
ESSI EVANS
Keyword(s):  
Feed Intake ◽  
Turnover Rate ◽  
Energy Content ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Regression Analyses ◽  
Turnover Rates ◽  
Independent Variables ◽  
Independent Variable ◽  
Ration Composition

Data were accumulated from published sources and were combined in order to estimate the effects of level of feed intake, dietary energy concentration, energy intake level and dietary forage percentage on rumen liquid turnover rates in sheep and cattle. The effects of the dietary parameters on liquid turnover rates were estimated by regression analysis, where all possible combinations of independent variables were considered. It was found that rumen liquid turnover rates increased (P < 0.05) as feed intake increased with both sheep (r = 0.610) and cattle (r = 0.715). From multiple regression analyses it was learned that the inclusion of independent variables that were related to the physical composition of the diet along with variables for intake improved the estimation of liquid turnover rates, although the independent variable related to ration composition differed between sheep and cattle. With data from sheep experiments, elevations in the digestible energy content of the diet depressed (P < 0.05) liquid turnover rate. Based upon data from cattle, decreases in the forage portion of the diet had a similar depressing (P < 0.05) effect.

scholarly journals Freshwater-adapted sea bass Dicentrarchus labrax feeding frequency impact in a lettuce Lactuca sativa aquaponics system

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11522
Author(s):  
Paraskevi Stathopoulou ◽  
Panagiotis Berillis ◽  
Nikolaos Vlahos ◽  
Eleni Nikouli ◽  
Konstantinos A. Kormas ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Specific Growth ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Feeding Frequency ◽  
Fish Feeding ◽  
Voluntary Feed Intake ◽  
Final Weight ◽  
Fish Group ◽  
Average Body

The aim of this study is to investigate the effect of three daily fish feeding frequencies, two, four and eight times per day (FF2, FF4, and FF8, respectively) on growth performance of sea bass (Dicentrarchus labrax)and lettuce plants (Lactuca sativa) reared in aquaponics. 171 juvenile sea bass with an average body weight of 6.80 ± 0.095 g were used, together with 24 lettuce plants with an average initial height of 11.78 ± 0.074 cm over a 45-day trial period. FF2 fish group showed a significantly lower final weight, weight gain and specific growth rate than the FF4 and FF8 groups. Voluntary feed intake was similar for all the three feeding frequencies treatmens (p > 0.05). No plant mortality was observed during the 45-day study period. All three aquaponic systems resulted in a similar leaf fresh weight and fresh and dry aerial biomass. The results of the present study showed that the FF4 or FF8 feeding frequency contributes to the more efficient utilization of nutrients for better growth of sea bass adapted to fresh water while successfully supporting plant growth to a marketable biomass.

scholarly journals In search for indirect criteria to improve residual feed intake in sea bass (Dicentrarchus labrax)

Aquaculture ◽  
2010 ◽  
Vol 300 (1-4) ◽  
pp. 50-58 ◽  
Author(s):  
Laure Grima ◽  
Marc Vandeputte ◽  
François Ruelle ◽  
Alain Vergnet ◽  
Muriel Mambrini ◽  
...  
Keyword(s):  
Feed Intake ◽  
Dicentrarchus Labrax ◽  
Residual Feed Intake ◽  
Sea Bass

The effects of dietary energy content and level of feeding on the growth of Israeli-Friesian intact male cattle

1974 ◽  
Vol 18 (1) ◽  
pp. 67-73 ◽  
Author(s):  
D. Levy ◽  
Z. Holzer ◽  
H. Neumark ◽  
S. Amir
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Energy Content ◽  
Live Weight ◽  
Dietary Energy ◽  
Intact Male ◽  
Live Weight Gain ◽  
Ad Libitum ◽  
Second Period ◽  
Daily Gain

SUMMARYIn an experiment with group-fed cattle from 6 months of age to slaughter at 480 kg live weight two levels of feed intake: 1, ad libitum, 2, 85% of ad libitum amount, were combined with two ratios of concentrate to hay: a, 70: 30; b, 30: 70. In two further treatments, 3a and 3b, the cattle were fed diets a or b at 70% of ad libitum from 6 to 10 months and ad libitum thereafter.Daily gain during the first 124 days of the experiment was (in grams) 1293, 983, 1097, 846, 992 and 756, and from the 125th day to slaughter 735, 600, 796, 579, 830 and 714, for treatments la, lb, 2a, 2b, 3a and 3b, respectively. The decline in rate of gain from the first period to the second was inversely related to the level of feed intake and to the percentage of concentrates in the ration in the first period.Daily carcass gain was 582, 393, 532, 350, 531 and 368 g for treatments la, lb, 2a, 2b, 3a and 3b, respectively.The treatments that were switched over from 70% of ad libitum feed intake in the first period to 100% in the second (3a and 3b), exhibited considerable compensatory growth in the second period, but this was not sufficient to be of economic advantage.The overall ME requirement per kg of live-weight gain was inversely related to rate of gain. Of the six treatments, 2a (85% of ad libitum, 70% concentrate) was the most efficient (19·8 Mcal/kg live-weight gain).Animals on the 100% level of feed intake throughout the experiment (treatments la, lb) were significantly fatter than those on the other treatments.

scholarly journals Effect of selection for fasting tolerance on feed intake, growth and feed efficiency in the European sea bass Dicentrarchus labrax

Aquaculture ◽  
2014 ◽  
Vol 420-421 ◽  
pp. S42-S49 ◽  
Author(s):  
Sophie Daulé ◽  
Marc Vandeputte ◽  
Alain Vergnet ◽  
Bruno Guinand ◽  
Laure Grima ◽  
...  
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass ◽  
Selection For ◽  
Fasting Tolerance

scholarly journals The effect of different dietary vitamin and mineral levels on certain production parameters, including egg shell characteristics of breeding ostriches

2015 ◽  
Vol 44 (5) ◽  
pp. 51-57
Author(s):  
TS Brand ◽  
GA Tesselaar ◽  
LC Hoffman ◽  
Z Brand
Keyword(s):  
Trace Elements ◽  
Feed Intake ◽  
Egg Production ◽  
Energy Content ◽  
Control Diet ◽  
Specific Pattern ◽  
Dietary Vitamin ◽  
Standard Diet ◽  
Dietary Energy ◽  
Commercial Diet

Earlier studies on breeding birds indicated no effect of dietary energy-content on feed intake. This observation is contradictory to results for other animals and/or poultry where feed intake decreases with an increase in dietary energy level. Literature revealed that a lack of certain nutrients may cause animals to consume more feed than necessary to satisfy their nutrient requirements for these limiting nutrients. In this study eight diet groups were evaluated. A standard commercial diet plus one of the following supplements: (i) Standard diet without a vitamin and mineral premix pack (control diet), (ii) with a normal premix pack, (iii) with normal vitamin and 2 x trace elements (M x 2), (iv) with normal trace elements and 2 x vitamins, (v) with a normal premix pack and limestone added as calcium source; (vi) with a normal premix pack and monocalcium phosphate added as phosphorus source, (vii) with a normal premix pack and soybean oilcake added as crude protein source, (viii) with a normal premix pack and linseed added as a fatty acid source. Significant differences were recorded in the quantity of feed ingested by birds between the diet with surplus minerals (M x 2) (Group 3) (2.3 ± 0.3 kg/bird/day), the diet with no vitamins and minerals added (Group 1) (2.7 ± 0.3 kg/bird/day) and the diet with added fatty acids in the form of linseed (Group 5) (2.9 ± 0.5 kg/bird/day). This indicates the possibility that ostriches may adjust feed intake to satisfy their mineral requirements. No statistically significant relationship was found between the thickness and strength of the shell. Significant differences in shell strength (mean value of 154.7, 109.9, 140.4, 142.7, 153.0, 143.4, 138.4 and 151.1 N/cm2, respectively) were found between all treatments, but no specific pattern could be identified. Results further revealed no effect of dietary treatment on egg production, dead-in-shell eggs (DIS), infertile eggs or chick production. Further experiments that include certain dietary treatments during the five months rest period are currently being done to quantify the effect of the addition of minerals and vitamins during this period on the production of breeding ostriches.Keywords: Eggshell strength; feed intake, minerals, vitamins

Response of modern hybrid pigs to dietary energy concentration

1989 ◽  
Vol 1989 ◽  
pp. 80-80
Author(s):  
S.A. Chadd ◽  
D.J.A. Cole
Keyword(s):  
Energy Density ◽  
Growth Performance ◽  
Feed Intake ◽  
Recent Experiment ◽  
Carcass Characteristics ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Constant Energy ◽  
Voluntary Feed Intake ◽  
Ad Libitum

In a recent experiment using the same improved genotype, pigs over the liveweight range 25 to 120 kg were found to have modest voluntary energy intakes (Chadd and Cole, 1988) particularly when compared with former intake prediction equations. It follows that the response of such pigs in terms of voluntary feed intake behaviour when provided with diets differing in energy concentration may have also changed. Diets that are formulated to be low in energy density and therefore bulky in nature are likely to represent more of a limitation to voluntary feed intake than previously. Former experiments designed to examine the pig's ability to adjust feed intake in order to maintain a constant energy intake have produced results varying from complete to incomplete compensation.A study was undertaken to examine the response of a modern genotype in terms of voluntary feed intake, digestible energy (DE) intake, growth performance and associated carcass characteristics, when offered a range of dietary energy concentrations ad libitum and taken to a heavy slaughter weight.

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