2h 



only minor modifications in the formula. Starfish meal was increased to 8.5 per- 

 cent, with pilchard meal and oyster shell in the control diet increased to 3.6^ 

 and 4.83 percent, respectively, to balance the additional starfish meal. Lard 

 was omitted. Soybean oilraeal and corn were increased to compensate for corn gluten 

 meal which was no longer available. 



The first laying test favored the mash containing starfish meal in number and 

 gross weight of eggs produced. The mean egg weights were almost identical for the 

 two groups, being 52.1 grams for the group fed pilchard meal and 51.5 for the 

 group fed starfish meal. 



Those fed starfish meal laid 435 eggs while the control hens laid 379 eggs; 

 however, one hen of the latter group did not lay for long periods so that on a 

 productivity basis (eggs per day x 100) the groups were nearly identical, being 

 70.8 for the hens fed starfish meal as compared to 69.7 for the group fed pilchard 



Group 



Table 4 - Egg Laying Records 



Wing Band 

 Somber s 



Total 



Eggs Laid 



Total Egg 

 Weight 



Average Egg 

 Weight 



Productivity - Eggs 

 Per Day x 100 



Series I 



7.5* 



starfish seal 



Group Total 

 Average 



226 

 221 

 239 

 242 



Number 



104 



s 



435 



Kilograms 



4.44 

 4. " 



J7_ 



15 



22.24 



4.45 



Grams 



51.7 

 51. i 

 51.6 

 43.9 

 59.2 



51.5 



70.8 



3.3* 



pilchard meal 



Group Total 

 Average 



212 



250 

 225 

 280 



299 



74 



379 

 75.8 



4.09 

 4.20 



2! 



3.96 



54.5 

 54.6 

 52.0 

 51.4 

 47.9 



-5AL 



69.7 



Series II 



1. Pilchard Mai for 



period A and starfish 

 meal for period bI/ 



Group Total 

 Average 



332 

 346 



242 



A 



39 



36 

 3? 

 4! 



42.0 



2.02 

 1.91 

 2.32 



2.50 



133 

 2.22 



B 



1T82 

 2.24 

 0.97 

 2.23 

 2.12 



21J 



A. 



50.0 

 52.2 

 56.0 

 50.8 



48.4 

 61.0 



11.51 

 1.92 



B_ 

 52.0 



56.8 



55.6 



60! 



.0 



66.8 



_5jy_ 



2. Starfish meal for 



period A and pilchard 

 meal for period B 



T3T 



294 

 354 

 329 

 335 

 225 



42 

 24 

 23 

 43 

 40 



"201 



Group Total 



Average 



1/The diets contained tf.5 percent starfish meal and 



T^5 

 I.67 

 0.77 



2T2 

 1.18 



1.49 

 2.34 



I: 37 



35.2134.0 



1.63 



10^0- 

 1.82 



5TF 

 50.7 



55.3 

 49.4 

 44.9 



5^2 



a*i 



54.4 



49.4 

 5H2 



3LL 



57.3 



percent pilchard meal. 



meal over a 4-month period. The individual data for these hens are summarized in 

 Table 4. It is evident that there is a high degree of intra-group variation in 

 both egg size and productivity, so that none of the differences is significant. 



The second egg-laying test series was designed to eliminate, to a large ex- 

 tent, the undesirable effect of the individual variation in the hens upon the 

 significance of the results. The design of the test was as follows: 



