CULLING FOWLS ON BASIS OF PRODUCTION 545 



characters looked for was used. In marking up the condition of an 

 individual hen at any one time a line is drawn through the descrip- 

 tion fitting each section. These records are then transferred to 

 each hen's yearly sheet in such a way as to show her condition at 

 any one particular time and the progressive steps or changes which 

 the sections studies have gone through. 



Cards such as Fig. 229 will be useful in instructing students 

 in the study of external parts. 



As a result of the culling studies at the International Contest a 

 practical culling chart was worked out by which it was possible to 



CULLING CHART 



PRODUCTIVITY BY EXTERNAL CHARACTERS 



Pigment Vent Pelvic Development 



Classes Shank, Beak, Ear, Vent Condition, Size Width, Thickness S P an Plumage 



'1 Ivpry Very Moist Very Large Very Wide Very Thin Very Wide Old all present Bright 



Class I 2 Tint Moist Large Wide Thin Wide Old some absent Dull 



Descriptions "\ 3 Medium Dry Medium Medium Medium Medium Growing new Dry 



;4 Yellow Very Dry Small, Narrow Thick Narrow New throughout Shriveled 



1. To keep for special matings. 



Classes J 2 ' To keep for general lavin g an < breeding. 



{1. Toke 



2. Toke 



3. To ho 



4. To sel 



hold for month or until laying ceases. 

 11 immediately. 



Disqualifications 



a. Poor health or sickness. 



b. Lack of vigor or stamina. 



. , c. Broken down physically as result of heavy laying. 



NOTE: This chart is designed for use in the summer and fall lo aid in the elimination of non-productive hens, and to aid in 

 the selection of the best hens. 



FIG. 230. Showing the judgment curve running near the top of the card and falling 

 in class one in most instances. This means, if we refer to the description of the various 

 sections, that this bird has been an exceptionally good layer and is in laying condition at 

 the time the curve was plotted. By referring to the bottom of the card we find that this 

 bird should be saved for another year and used for special matings in the breeding of 

 future layers. 



plot a curve showing the condition of the various sections studied 

 at any one time. The position in which the curve falls designates 

 what disposition is to be made of the particular bird in question. 

 Such a chart is useful in instructing in the method of culling and it 

 is also useful in keeping a record of individual birds. The plotting 

 of these curves as mentioned above is a very interesting and helpful 

 manner of determining what shall be done with any one bird. 



