scholarly journals Seasonal Changes in Interior Egg Quality of Single Comb White Leghorn Hens

1936 ◽  
Vol 15 (2) ◽  
pp. 115-118 ◽  
Author(s):  
J.A. Hunter ◽  
A. Van Wagenen ◽  
G.O. Hall
Keyword(s):  
Seasonal Changes ◽  
Egg Quality ◽  
White Leghorn ◽  
Single Comb

scholarly journals Egg Quality. 2. Albumen Quality of Eggs from Five Commercial Strains of White Leghorn Hens During One Year of Lay

1986 ◽  
Vol 65 (1) ◽  
pp. 63-66 ◽  
Author(s):  
G. DOYON ◽  
M. BERNIER-CARDOU ◽  
R.M.G. HAMILTON ◽  
F. CASTAIGNE ◽  
C.J. RANDALL
Keyword(s):  
Egg Quality ◽  
White Leghorn ◽  
One Year

THE EFFECT OF PHASE-FEEDING ON EGG PRODUCTION AND EGG QUALITY OF WINTER-HOUSED WHITE LEGHORN HENS

1982 ◽  
Vol 62 (3) ◽  
pp. 887-897 ◽  
Author(s):  
N. A. CAVE ◽  
R. M. G. HAMILTON
Keyword(s):  
Body Weight ◽  
Protein Content ◽  
Egg Production ◽  
Egg Quality ◽  
Performance Criteria ◽  
Feed Consumption ◽  
White Leghorn ◽  
Egg Weight ◽  
Variable Effect

Two experiments with nine strains of Single Comb White Leghorn hens were conducted to compare laying house performance of hens given a diet of uniform protein content or a phase-feeding diet in which protein content was reduced from 156 to 148 and then to 140 g/kg at 273 and 414, or 273 and 384 days of age. Performance criteria were egg production, feed and protein intake, egg, quality, egg weight, mortality and body weight. Phase-feeding allowed reductions of 4.2 and 4.3% in protein consumption without reducing egg production, mortality or, except in one strain, body weight. There was an increase of 0.5% in feed consumption, but feed cost was reduced by 1.3%. Phase-feeding increased Haugh units by 0.3% and decreased specific gravity of eggs in one experiment, decreased percent visibly-cracked eggs in the other experiment and had no effect on percent blood spots. Depending on strain, phase-feeding had a variable effect on egg weight in exp. 1 but had no effect in the second experiment. Key words: Phase-feeding, protein utilization, egg production, hen

scholarly journals Effects of the wood vinegar compound on egg production and egg quality of White Leghorn hens.

1987 ◽  
Vol 24 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Takashi SAKAIDA ◽  
Kurio ENYA ◽  
Toshiji TANAKA
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
White Leghorn ◽  
Wood Vinegar

EVALUATION OF FULL-FAT SPAN RAPESEED AS AN ENERGY AND PROTEIN SOURCE FOR LAYING HENS

1975 ◽  
Vol 55 (2) ◽  
pp. 219-222 ◽  
Author(s):  
J. M. OLOMU ◽  
A. R. ROBBLEE ◽  
D. R. CLANDININ ◽  
R. T. HARDIN
Keyword(s):  
Egg Production ◽  
Dry Matter ◽  
Laying Hens ◽  
Egg Quality ◽  
White Leghorn ◽  
Feed Conversion ◽  
Low Erucic Acid ◽  
Dietary Treatments ◽  
Single Comb ◽  
Simple Regression

Full-fat Span rapeseed (a low erucic acid variety), which had been steam-treated at 90 C for 30 min and then ground, was examined as a protein and energy source in rations of Single Comb White Leghorn laying hens during a laying period of 336 days. The levels of mortality and egg production were not significantly affected by the inclusion of 0, 5, 10 or 15% Span rapeseed in the ration; however, calculation of the simple regression between hen-day production and level of rapeseed used indicated a significant decrease in production with increasing levels of rapeseed in the ration. No mortality was attributed to ’haemorrhagic liver syndrome’ in the groups fed rations containing 0 and 5% rapeseed but the incidence of haemorrhagic liver syndrome was 3.1 and 4.2%, respectively, in birds fed rations containing 10 and 15% rapeseed. Egg quality, feed conversion and body weight were not affected by any of the dietary treatments. The sizes of the livers and hearts and their composition of dry matter, fat and protein were not significantly affected by dietary treatments. There was, however, a progressive and significant (P < 0.05) increase in the relative weights of the thyroids as the level of rapeseed in the ration was increased.

scholarly journals Effect of dietary energy concentration on performance parameters and egg quality of white leghorn laying hens

2014 ◽  
Vol 16 (4) ◽  
pp. 381-388 ◽  
Author(s):  
PAP Ribeiro ◽  
JB Matos Jr ◽  
LJC Lara ◽  
LF Araújo ◽  
R Albuquerque ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Performance Parameters ◽  
White Leghorn
Sign in / Sign up

Export Citation Format

Share Document