scholarly journals Growth Response of Clarias gariepinus Post Fingerlings Fed Various Dietary Protein and Digestible Energy Levels

2017 ◽  
Vol 12 (2) ◽  
pp. 1-5
Author(s):  
B Aliu ◽  
J Otuagomah
Keyword(s):  
Dietary Protein ◽  
Growth Response ◽  
Energy Levels ◽  
Clarias Gariepinus ◽  
Digestible Energy

RESPONSE OF EARLY WEANED PIGS TO DIETS OF DIFFERENT DIGESTIBLE ENERGY CONCENTRATIONS AND THE EFFECTS OF CEREAL SOURCE AND ADDED MOLASSES ON PERFORMANCE

1972 ◽  
Vol 52 (1) ◽  
pp. 87-96 ◽  
Author(s):  
J. F. O’GRADY ◽  
J. P. BOWLAND
Keyword(s):  
Growth Rate ◽  
G Protein ◽  
Dietary Protein ◽  
Lower Energy ◽  
Energy Levels ◽  
Constant Ratio ◽  
Initial Weight ◽  
N Retention ◽  
Digestible Energy ◽  
Very High

One hundred and sixty pigs weaned at 2 weeks were allotted at an average initial weight of 3.8 kg to two experiments to examine the effects of diets based on barley or wheat as the cereal component and having digestible energy (DE) concentrations ranging from 2.8 to 3.6 Mcal/kg. Protein was in constant ratio to DE (15.2 kcal DE/g protein). Very high mortality was experienced on the lower energy levels, although the inclusion of 5% molasses in the formulation reduced mortality. Among surviving pigs, growth rate was significantly reduced at lower energy concentrations. The optimum DE level for maximum gain was 3.2 Mcal in the first experiment and 3.4 Mcal/kg in the second. The efficiency of utilization of DE for growth was best at a DE concentration of 3.2 Mcal/kg in the first experiment but did not vary in the second. Digestibility of dietary protein increased with increasing dietary DE but nitrogen (N) retention as percentage of N intake or of digestible N was not significantly influenced by DE in the diet.

Growth responses in red deer hinds from 16-24 months of age when fed two energy levels during their second winter

1998 ◽  
Vol 1998 ◽  
pp. 141-141
Author(s):  
M H Davies ◽  
D W Deakin
Keyword(s):  
Growth Response ◽  
Red Deer ◽  
Energy Levels ◽  
Growth Restriction ◽  
Growth Responses ◽  
Wide Range ◽  
Feeding Regimes ◽  
Cost Of Production ◽  
Red Meats

It is important that venison competes with other red meats in efficiency and cost of production. The growth responses of farmed red deer during the first 15-18 months of life have been well defined under a wide range of feeding and daylength regimes (Davies, 1995). However there is a need to examine less intensive systems of production which aim to maximise growth from grazed grass, following various growth-restriction feeding regimes during winter. The objective of this experiment was to quantify the growth response in 16-24 month old hinds fed two contrasting feeding regimes during their second winter, followed by a period at pasture.

A note on the response of pigs weaned at 28 days to dietary protein

1986 ◽  
Vol 42 (3) ◽  
pp. 427-429 ◽  
Author(s):  
R. G. Campbell ◽  
M. R. Taverner
Keyword(s):  
Growth Rate ◽  
Food Intake ◽  
Dietary Protein ◽  
Live Weight ◽  
Gain Ratio ◽  
Digestible Energy ◽  
Voluntary Food Intake

ABSTRACTThirty-six piglets were used to investigate the effect of six concentrations of dietary protein ranging from 155 to 235 g/kg, and corresponding dietary lysine concentrations from 10·1 to 15·4 g/kg, on the performance of pigs weaned at 28 days of age and growing between 7·5 and 20 kg live weight. Voluntary food intake was not significantly affected by dietary protein, and growth rate increased with increase in dietary protein and lysine up to 167 and 10·9 g/kg respectively (0·75 g lysine per MJ digestible energy (DE)). Food: gain ratio improved significantly with each increase in dietary protein and lysine up to 177 and 11·6 g/kg (0·79 g lysine per MJ DE) respectively.

scholarly journals OPTIMUM PROTEIN AND ENERGY LEVELS FOR FINISHING BROILER CHICKENS IN A TROPICAL ENVIRONMENT

2021 ◽  
Vol 4 (1) ◽  
pp. 239-253
Author(s):  
M. J. Olomu
Keyword(s):  
Dietary Protein ◽  
Protein Level ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Energy Levels ◽  
Tropical Environment ◽  
Tropical Country ◽  
Protein Levels ◽  
Groundnut Meal ◽  
Dietary Treatments

Three experiments were conducted to determine the optimum protein and energy levels for finishing broiler chickens in a tropical environment. Dietary protein levels (20, 23 and 26 percent) and energy levels (2800, 3000 and 3200 Kcal/kg diet) tested had no significant effects on performance of finishing chickens fed fishmeal-containing rations. Rations based on cereals and groundnut meal, without fishmeal, did not support maximum liveweight gain and feed efficiency at dietary protein levels below 26 percent. Dietary treatments had no significant effects on carcass dressing percentages. Based on the present results, a protein level of 20 percent(for fishmeal containing rations) and 23 or 26 percent (for rations based on groundnut meal without fishmeal) and energy levels of 2800 to 3000 Kcal/Kg diet are tentatively recommended for finishing broiler chickens raised in a tropical country like Nigeria.

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