scholarly journals Effects of chromium yeast supplementation on productive and metabolic responses of laying hens fed diets containing different energy levels

2021 ◽  
Vol 50 ◽  
Author(s):  
Estela Valéria Siloto ◽  
José Roberto Sartori ◽  
Tatiane Souza dos Santos ◽  
Vitor Barbosa Fascina ◽  
Lucimara Patrícia Centenaro ◽  
...  
Keyword(s):  
Laying Hens ◽  
Energy Levels ◽  
Metabolic Responses ◽  
Chromium Yeast

scholarly journals Metabolizable energy levels for semi-heavy laying hens at the second production cycle

2009 ◽  
Vol 38 (5) ◽  
pp. 857-862
Author(s):  
Fernando Guilherme Perazzo Costa ◽  
Janaine Sena da Costa ◽  
Cláudia de Castro Goulart ◽  
Denise Fontana Figueiredo-Lima ◽  
Raul da Cunha Lima Neto ◽  
...  
Keyword(s):  
Energy Level ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Energy Levels ◽  
Metabolizable Energy ◽  
Production Cycle ◽  
Egg Mass ◽  
Feed Conversion

This study was carried out to evaluate the energy levels in the diet to obtain better performance rates and quality of eggs from laying hens in the second production cycle. One hundred and eighty Bovans Goldline laying hens with 62 weeks of age were used during four 28-day periods. A completely randomized experimental design was used with four metabolizable energy levels (2,650, 2,725, 2,800, 2,875 and 2,950 kcal/kg), each with six replicates of six birds. The energy level of diet did not affect the weight of the egg, yolk, albumen and eggshell, the percentages of yolk, albumen and eggshell, yolk color and egg specific gravity. Feed intake, egg production, egg mass and feed conversion per egg mass and per dozen eggs increased significantly with increasing levels of metabolizable energy. Feed intake decreased linearly as the energy level in the diet increased. The metabolizable energy levels showed a quadratic effect on egg production, egg mass and feed conversion per egg mass and per dozen eggs. The metabolizable energy level of 2,830 kcal/kg was the most appropriate to promote better performance and quality of eggs from laying hens in the second production cycle.

scholarly journals Effect of protein and energy levels in a constant ratio supplemented with methionine and lysine on performance of layers and on egg quality.

1980 ◽  
Vol 28 (1) ◽  
pp. 29-35
Author(s):  
A.R. El Boushy ◽  
L.G.M. van Gils ◽  
M.C. Papadopoulos
Keyword(s):  
Feed Intake ◽  
Crude Protein ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Energy Levels ◽  
Metabolizable Energy ◽  
Constant Ratio ◽  
Feed Conversion ◽  
Egg Weight

Twenty groups of 36 laying hens in individual cages were fed on one of 5 diets in which the energy:protein ratio was constant. Diets 1 to 5 had crude protein 12.0, 12.9, 14.0, 15.0 and 16.0% and metabolizable energy 8.71, 9.57, 10.27, 11.10 and 11.70 MJ/kg. From 24 to 64 weeks old, egg production of hens given diets 1 to 5 was 71.46, 71.31, 72.51, 71.13 and 69.99%, respectively. Corresponding values of mean egg weight, weekly feed intake and efficiency of feed conversion were 60.51, 60.47, 61.11, 61.02, 61.07 g; 157.16, 147.56, 142.03, 130.37, 126.72 g; 3.674, 3.460, 3.262, 3.031, 3.014 kg feed/kg egg, respectively. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Dietary Energy Levels for Laying Hens as Related to Age and Environmental Temperatures

1961 ◽  
Vol 40 (6) ◽  
pp. 1483-1491 ◽  
Author(s):  
A.A. Kurnick ◽  
H.B. Hinds ◽  
M.W. Pasvogel ◽  
B.L. Reid
Keyword(s):  
Laying Hens ◽  
Energy Levels ◽  
Dietary Energy ◽  
Environmental Temperatures

scholarly journals Effect of different metabolizable energy and soybean oil levels in the diet of laying hens on the egg chemical composition and lipid profile

2009 ◽  
Vol 38 (4) ◽  
pp. 685-689 ◽  
Author(s):  
Bárbara Josefina de Sousa Quirino ◽  
Fernando Guilherme Perazzo Costa ◽  
Rita de Cássia Ramos do Egypto Queiroga ◽  
Walter Esfrain Pereira ◽  
Raul da Cunha Lima Neto ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Soybean Oil ◽  
Laying Hens ◽  
Feeding Strategy ◽  
Energy Levels ◽  
Egg Yolk ◽  
Metabolizable Energy ◽  
Fatty Acids Profile ◽  
Randomized Design

This study was carried out to evaluate the effects of increasing metabolizable energy and soybean oil levels on the egg chemical composition, total lipids and cholesterol contents and fatty acids profile in the egg yolk. Three hundred and sixty 29 week-old Bovans Goldline semi-heavy commercial layers were used during three periods of 28 days. A completely randomized design were used in a 3 × 3 double factorial arrangement with three soybean oil levels (1, 2 and 3%) and three metabolizable energy levels in the diet (2,600, 2,750 and 2,900 kcal/kg), totalizing nine diets with five replicates of eight birds. No interaction soybean oil × metabolizable energy levels was observed. The metabolizable energy levels did not affect any of the determined characteristics. The moisture, ash and protein contents in the egg yolk and albumen and the lipid and cholesterol contents in the yolk were not affected by the soybean oil levels in the diet, while linoleic acid (C18:3) and linolenic acid (C18:2) levels responded linearly. The use of 2,600 kcal ME/kg and 3% of soybean oil in the diet of laying hens with consumption of 120 g/bird/day is justifiable, since this feeding strategy improves the fatty acids profile of the egg.

scholarly journals Effect of energy and dose of vitamin E selenium on improving the reproduction performance of Joper brood stock

2022 ◽  
Vol 335 ◽  
pp. 00036
Author(s):  
Nining Haryuni ◽  
Hartutik Hartutik ◽  
Eko Widodo ◽  
Sri Wahjuningsih
Keyword(s):  
Vitamin E ◽  
Energy Intake ◽  
Laying Hens ◽  
Energy Levels ◽  
Selenium Supplementation ◽  
Production Performance ◽  
Metabolic Energy ◽  
Brood Stock ◽  
Randomized Design ◽  
Feed Protein

Production performance in Joper broodstock can be improved through increased feed energy and vitamin E-selenium supplementation. This study used 400 laying hens Isa Brown aged 35 weeks and 15 Sentul rooster aged 68 weeks. This study used a factorial completely randomized design with 2 factors, namely metabolic energy levels (2,700 and 2,800 kcal/kg) and vitamin E-selenium supplementation doses (0, 25, 50, 75 and 100 ppm) where each treatment used 10 laying hens and repeated 4 times. The dose of selenium is 0.001 ppm/mg vitamin E. The energy level has a very significant effect (P < 0.01) on (feed, protein and energy) intake and HDP. The dose level of vitamin E- selenium in feed had a very significant effect (P < 0.01) on HDP and significant (P < 0.05) on (feed, protein and energy) intake and FCR. The interaction between the two has a very significant effect (P < 0.01) on HDP. The average feed intake 113-115 g/day, protein intake 21.90-22.20 g/day and energy intake 308-317 kcal/bird. HDP 76.70-83.00%. The conclusion of this study is that feed with metabolic energy of 2800kcal/kg and vitamin E-selenium supplementation at a dose of 100 ppm can improve the productivity of Joper broodstock.

Short‐term metabolic responses of gilthead seabream, Sparus aurata , fed diets with different protein and protein: Energy levels

2021 ◽  
Author(s):  
Renan Rosa Paulino ◽  
Alexandre Firmino Diógenes ◽  
Kátia Rodrigues Batista Oliveira ◽  
Tamira Maria Orlando ◽  
Priscila Vieira Rosa ◽  
...  
Keyword(s):  
Sparus Aurata ◽  
Energy Levels ◽  
Metabolic Responses ◽  
Gilthead Seabream ◽  
Short Term ◽  
Protein Energy
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