scholarly journals Egg Production Characteristics and Adrenal Function in White Leghorns Confined at Different Floor Space Levels

1959 ◽  
Vol 38 (4) ◽  
pp. 893-898 ◽  
Author(s):  
H.S. Siegel
Keyword(s):  
Egg Production ◽  
Adrenal Function ◽  
Floor Space ◽  
White Leghorns ◽  
Production Characteristics

scholarly journals First and Second Cycle Egg Production Characteristics in Commercial Table Egg Flocks

1992 ◽  
Vol 71 (3) ◽  
pp. 448-459 ◽  
Author(s):  
DONALD D. BELL ◽  
CAROL J. ADAMS
Keyword(s):  
Egg Production ◽  
Production Characteristics

Extension

1930 ◽  
Vol 3 (4) ◽  
pp. 71-77
Keyword(s):  
Egg Production ◽  
Annual Report ◽  
Agricultural Experiment Station ◽  
Texas Agricultural Experiment Station ◽  
Breeding Work ◽  
Experiment Station ◽  
White Leghorns ◽  
Agricultural Experiment

Texas Agricultural Experiment Station. Fourty-First Annual Report, 1928, Brazos County, Texas.Breeding as Affecting Egg Production.The work under this project this year is a continuation of that carried on the previous year. The progeny of Cocks 113, 114, 115, and 116, were trapnested during the year. Cock No. 116 is the outstanding breeder, none of his pullets laying less than 100 eggs up to October 1, and 58 per cent of them laying over 180 eggs. Pullets hatched in the spring of 1927, are being trap-nested this year, but their records are not complete. Other pullets which were hatched in the spring of 1928 are being held and will be trap-nested the coming year. In addition to breeding White Leghorns for increased egg production, breeding work is being done using White Rocks and Barred Rocks in an endeavor to establish a White Rock high-egg producing strain.

Effects of cage population and stocking density on the performance of layers in Queensland

1975 ◽  
Vol 15 (76) ◽  
pp. 619 ◽  
Author(s):  
JK Connor ◽  
HW Burton
Keyword(s):  
Egg Production ◽  
Control Measure ◽  
Stocking Density ◽  
Housing System ◽  
Feed Consumption ◽  
White Leghorn ◽  
Housing Systems ◽  
Cage Size ◽  
Cage Population ◽  
Production Characteristics

Three commercial egg production strains, a White Leghorn and two White Leghorn x Australorp, were used in two experiments which examined the effects of cage size and number of birds per cage on production characteristics. Nine cage housing systems varying from a 23 cm frontage single bird cage to a 61 cm frontage cage housing seven birds were compared. The efficacy of debeaking again at 12 or 20 weeks of age following routine debeaking at five days of age as a cannibalism control measure in a comparison of five housing systems was examined in another two experiments. Further experiments examined the practice of housing birds according to body weight in either one, two or three bird cage populations. Increasing bird numbers per cage or stocking density had little effect on egg weight, feed consumption or liveweight gain but decreased egg production and increased mortality in experiments where cannibalism was a significant cause of death. Hen housed egg production was an accurate measure of bird performance for comparison of housing systems. In experiments where additional debeaking was carried out the incidence of cannibalism was insignificant and debeaking at 12 or 20 weeks had no detrimental effect on bird performance. No strain x cage housing system interactions were observed and no improvement in performance resulted from housing birds in multiple bird cages according to liveweight.

scholarly journals Genetic type and growth influence on the production characteristics of light line hen hybrids

2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 357-364
Author(s):  
V. Rajicic ◽  
S. Mitrovic ◽  
S. Bogosavljevic-Boskovic ◽  
J. Milivojevic ◽  
M. Staletic ◽  
...  
Keyword(s):  
Food Consumption ◽  
Body Mass ◽  
Egg Production ◽  
Laying Hen ◽  
Mass Mortality ◽  
Egg Laying ◽  
Genetic Type ◽  
Light Line ◽  
Average Consumption ◽  
Production Characteristics

The aim of this work was parallel investigation of the producing characteristics of light line hen hybrids. Investigation enclosed two hen proveniences: Hisex Brown and Shawer 579. Within the period of 19 up to 63 weeks we followed next parameters: egg-laying hen body mass, mortality, food consumption and egg-laying capacity. Hens body mass on the beginning of the examination, within the 19 weeks of growth was, for Hisex Brown provenience 1607g, and for Shawer 579 provenience 1563g. Hisex Brown provenience achieved about 250 g higher body mass on the end of investigation. During the experiment, mortality at Hisex Brown egg-laying hen was a little bit smaller (5,40%), while the Shawer 579 had 5,56% of dead hens. Globally, the mortality at both hen hybrids was in the range of technological normative. The average consumption of the food at Hisex Brown provenience was higher and it was 127,28g, and at Shawer 579 provenience 125,14g. The average consumption of the nutrition for egg production at both provenience was the same (150g).

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