Replacement of fish meal in juvenile channel catfish, Ictalurus punctatus, diets using a yeast-derived protein source: the effects on weight gain, food conversion ratio, body composition and survival of catfish challenged with Edwardsiella ictaluri

2011 ◽  
Vol 18 (2) ◽  
pp. 132-137 ◽  
Author(s):  
B.C. PETERSON ◽  
N.J. BOOTH ◽  
B.B. MANNING
Keyword(s):  
Body Composition ◽  
Weight Gain ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Fish Meal ◽  
Conversion Ratio ◽  
Edwardsiella Ictaluri ◽  
Protein Source ◽  
Food Conversion ◽  
Food Conversion Ratio

The effect of an anabolic steroid on the performance and carcass measurements of gilts and barrows in the finishing stages of growth

1975 ◽  
Vol 20 (2) ◽  
pp. 293-301
Author(s):  
I. H. Williams ◽  
A. C. Dunkin
Keyword(s):  
Weight Gain ◽  
Anabolic Steroid ◽  
Crude Protein ◽  
Live Weight ◽  
Conversion Ratio ◽  
Daily Weight Gain ◽  
Food Conversion ◽  
Significant Treatment ◽  
Food Conversion Ratio ◽  
Different Levels

Summary1. An experiment involving 64 individually-penned pigs (32 females (gilts) and 32 castrated males (barrows)) was conducted over the live weight range 50 to 83 kg, to study the effects of a parenterally administered anabolic steroid upon the performance and carcass measurements of gilts and barrows given either a 15·0% or an 18·8% crude protein (CP) diet at two different levels.2. The steroid significantly improved both daily weight gain (+5·2%) and food conversion ratio (+4·8%) of gilts and barrows.3. There were no significant treatment interactions for either daily weight gain or food conversion ratio, but the data suggest that gilts responded to the hormone to a greater extent than barrows at the particular dose level of the steroid administered.4. The steroid significantly improved the carcass, as assessed by linear backfat measurements, of pigs given the higher CP diet but had no effect upon carcass measurements of pigs given the lower CP diet.

scholarly journals Pengaruh pemberian beberapa jenis pakan pada pertumbuhan ikan kerapu Cantang Epinephelus sp di Karamba Jaring Apung di Teluk Talengen Kepulauan Sangihe

2017 ◽  
Vol 4 (3) ◽  
Author(s):  
Liswara S.N. Tumadang ◽  
Julius Sampekalo ◽  
Sartje Lantu
Keyword(s):  
Weight Gain ◽  
Conversion Ratio ◽  
Food Type ◽  
Food Conversion ◽  
Research Results ◽  
Fish Flesh ◽  
Highest Weight ◽  
Food Conversion Ratio ◽  
Net Cage ◽  
Net Cages

The research was conducted in floating net cage for at Talengen Island Sangihe to study the growth of grouper (46-70 g in average) fed various type of feed including fish flesh, pellet, cassava, sago) for six weeks, and to determine the food conversion ratio of each food type. The treatments consisted of A (fish flesh), B (fish flesh + cassava), C (fish flesh+sago), D (pellet). Fish was culture in 12 floating net cages measuring 1x1x1,5 m each, 10 fish/cage. Research results showed that the highest weight gain was achieved in fish in treatment C (87.6%), followed by treatment A (76.1%) , B (69.8%), and D (52.5%).  Statistically, treatment C was significantly different  compared to treatment A, B and D. The use of fish flesh combined with sago was able to improve growth of grouper Kata kunci : Kerapu Cantang,  growth, food conversion ratio, floating net cage

scholarly journals Pertumbuhan ikan kuwe putih Caranx sexfasciatus di karamba jaring apung yang diberi pakan rucah dengan bahan tambahan yang berbeda

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Grace F Mansauda ◽  
Julius Sampekalo ◽  
Cyska Lumenta
Keyword(s):  
Weight Gain ◽  
Statistical Analysis ◽  
Conversion Ratio ◽  
Food Conversion ◽  
Food Conversion Ratio ◽  
Trash Fish ◽  
Fish Weight ◽  
Net Cage ◽  
The Individual ◽  
Net Cages

The use of trash fish ( Treatment A ), trash fish + cassava( Treatment B), pellets+ trash fish ( Treatment C ) and a mixture of trash fish + cassava + pellets ( Treatment D ) as feed had been conducted to evaluate its effect on growth of Caranx sexfasciatus. This research was carried out inTelengen Bay waters, Central Tabukan District, Sangihe Islands Regency. Fish with weighing 60,9 -62,9 g were distributed in 12 net cages measuring 3x1x1 m with the density of 5 fish each. Fish were fed three times a day for seven weeks. Fish weight was measured every week. At the end of experiment, the individual weight of fish ranged from 168,7 to 222,8 g in with the highest average weigth gain was achieved in treatment A namely 222.8 g (354.2%)), followed by treatment C 178.0 g (286.6 %) treatment D 170.08 g (280.5%), and treatment B as much as 168.7 g (274.3%). Statistical analysis displayed that weight gain of fish in treatment A was significantly different as compared to that of treatments B, C, and D. There was no significant differencesbetween treatment B, C, and D. Food conversion ratio of treatment A was significantly different compared to other treatments. Food conversion ratio of treatment A was 2.80, B 4.25, C 3.70, D 3.88. as conclusion, the use of trash fish without supplementaion with others ingradients resulted in the highest absolute and relatif growth of fish and the lowest food conversion ratio of 2.80 as compared to other treatments. Keywords: Caranx sexfasciatus, weight gain, food conversion ratio, floting net cage

Modelling the effects of thermal environment and dietary composition on pig performance: model testing and evaluation

2003 ◽  
Vol 77 (2) ◽  
pp. 267-276 ◽  
Author(s):  
I.J. Wellock ◽  
G.C. Emmans ◽  
I. Kyriazakis
Keyword(s):  
Body Composition ◽  
Food Intake ◽  
Protein Content ◽  
Conversion Ratio ◽  
Growing Pigs ◽  
Food Conversion ◽  
Food Conversion Ratio ◽  
Wide Range ◽  
Model Predictions ◽  
Pig Performance

AbstractA deterministic, dynamic pig growth model predicting the effect of genotype, and the thermal and nutritional environments on food intake, growth and body composition of growing pigs was tested and evaluated against experimental data from the literature. Four sets of experiments meeting the necessary requirement of feeding the pigs ad libitum and reporting sufficient information on trial conditions were chosen to test the model. The parameters used in the model to describe the kind of pig were protein weight at maturity (Pm) the Gompertz rate parameter (B) and the ratio of mature lipid weight (Lm) to Pm. Values for Pm and B used to apply to the pigs in the four experiments were selected as those which gave the maximum daily gains equal to those reported at thermoneutral temperatures on diets not limiting in protein. The value of Lm was chosen as that which gave a value for food conversion ratio close to that seen in the experiment, again at a thermoneutral temperature and on a non-limiting diet. The model was run for each of the experiments from the given start weight until slaughter weight was reached. All pigs were assumed to have their desired bodily composition at the start of the experimental period, which is determined by their genetic descriptors and weight. From the conditions of the experiments, average daily gain (ADG) average daily food intake (ADFI) food conversion ratio (FCR) final body weight, body composition, average daily gains of each of the chemical body components and heat production (HP) were predicted. Generally as temperature increased or the crude protein content of the food increased, ADFI, ADG and the fatness of the pig decreased, whilst protein content increased. Quantitative differences between the model predictions and the observations, were probably due to the greater sensitivity of the model to temperature. This is likely to reflect the omission of long-term adaptation and acclimatization, or to incorrect estimation of the wetness of the pig’s skin. However, model predictions were generally in good quantitative agreement with the observed data over the wide range of treatments tested. This gives support to the value and accuracy of the model for predicting pig performance when the thermal and nutritional environments are manipulated.

Selection for improved food conversion ratio on ad libitum group feeding in pigs

1983 ◽  
Vol 37 (3) ◽  
pp. 375-385 ◽  
Author(s):  
A. J. Webb ◽  
J. W. B. King
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Conversion Ratio ◽  
Food Conversion ◽  
Daily Food Intake ◽  
Food Conversion Ratio ◽  
Daily Food ◽  
Group Feeding ◽  
Ad Libitum ◽  
Selection For

ABSTRACTAn experiment was conducted to show the effectiveness of selection for improved food conversion ratio on ad libitum group feeding. Selection (32 ♀♀ and 8 ♂♂) and unselected control (32 ♀♀ and 16 ♂♂ lines were maintained for seven generations at the rate of one per year. Progeny were fed ad libitum from 27 to 82 kg live weight: boars singly or in pairs, and gilts in litter groups. Selection was on pen average food conversion ratio (food/live-weight gain), recalculated as each pig reached 82 kg.In spite of selection differentials averaging 0·61 s.d. per generation, there was no response (selection minus control) in food conversion at Generation 6 (−0·03, s.e. 0·08). However, there were correlated increases in daily live-weight gain (56, s.e. 18 g), daily food intake (145, s.e. 59 g) and ultrasonic backfat (2·4, s.e. 0·4 mm). In Generation 7, 146 full-sib pairs (male castrate and gilt) were tested on ad libitum or scale (0·77 g/g ad libitum daily food intake) feeding. Line by feeding regime interactions were absent for all traits except killing-out proportion and belly thickness.The increased fatness of the selection line on ad libitum feeding was retained on the scale (2·2 v. 2·4, s.e. 10 mm), suggesting a primary difference in partition of nutrients rather than intake. The selection procedure adopted was not successful in improving food conversion, but no clear conclusions could be drawn from the experiment. Uncertainty remains as to the value of group food consumption measurements in selection programmes.

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