Table 38. — Adrenal weight in relation to body weight of rats fed stock, SP 8 HVO, and SPE diets 





Rats 



Average 



body 



weight 



Adrenal weight 



Adrenal 

 to body 

 weight 



Adrenals weighing — 



Diet and body weight of 

 rats (grams) 



Average 



Range 



Less 



than 



15.0 mg. 



15.0 to 

 19.9 mg. 



20.0 to 

 29.9 mg. 



30.0 mg. 

 and over 



Stock: 



300 to 399 _ __. 



Number 

 16 

 26 

 43 

 12 



10 

 20 

 26 



8 



5 

 43 

 30 



8 



Grams 

 372 

 430 

 471 

 547 



466 

 547 

 646 

 730 



471 

 560 

 641 

 736 



Mg. 



17. 7 

 10. 6 



20. 4 



21. 7 



16. 7 



18. 8 



21. 5 

 23. 2 



19. 1 



22. 4 

 25.3 

 26. 6 



Mg. 



12. 4-22. 6 



13. 7-29. 3 



14. 6-25. 9 

 16. 3-33. 5 



11. 1-20. 1 



14. 3-24. 5 



16. 3-32. 7 

 18. 4-28. 9 



15. 2-24. 9 

 14. 8-47. 8 



17. 1-35. 6 

 17. 1-55. 3 



Mg./ 

 100 g. 

 4.8 

 4.6 

 4.3 

 4.0 



3.6 

 3.4 

 3.3 



3. 2 



4. 1 

 4.0 

 4.0 

 3. 6 



Percent 



19 



8 



5 







30 

 5 

 

 





 2 

 

 



Percent 

 62 

 46 

 40 

 42 



60 

 60 

 31 

 25 



60 

 21 

 10 



38 



Percent 

 19 

 46 

 56 

 50 



10 

 35 

 65 



75 



40 

 74 

 80 



38 



Percent 

 



400 to 449_ . . . 







450 to 499 







500 and over -_ . 



8 



SP 8 HVO: 



400 to 499 







500 to 599 







600 to 699 ... 



4 



700 and over. 







SPE: 



400 to 499 







500 to 599 



2 



600 to 699. . 



10 



700 to 799 



25 







Table 39. — Adrenal weights of rats losing weight at different ages on stock, SP 8 HVO, and SPE diets 





Rats 



Average 

 age 



Average 



weight 



loss 



Adrenal weight 



Adrenals weighing — 



Weight loss, diet, and age 

 of rats (days) 



Average 



Range 



Less 



than 20.0 



mg. 



20.0 to 

 29.9 

 mg. 



30.0 to 

 39.9 

 mg. 



40.0 mg. 

 and 

 over 



Weight loss less than 100 

 grams: 

 Stock: 



300 to 699 



Number 

 5 

 4 

 5 



7 



12 



9 



9 

 39 



17 



8 

 4 



2 



5 



15 



9 



20 

 23 

 32 



Days 

 592 

 763 

 853 



245 

 491 

 669 



185 

 401 

 590 



521 



776 

 808 



422 

 600 



829 



352 

 443 

 583 



Grams 

 56 

 65 

 66 



34 

 61 

 46 



23 



51 



52 



125 

 193 

 161 



155 



169 

 205 



150 

 164 

 160 



Mg. 

 21. 7 

 25. 3 

 30.0 



20. 5 

 23. 8 

 25.8 



23. 5 



28. 9 

 32. 8 



37. 1 



38. 

 45.2 



32. 7 

 35.7 

 31. 8 



39.4 

 36. 5 

 35.3 



Mg. 



18. 4-26. 7 



15. 1-24. 7 

 26. 5-36. 3 



17. 1-32. 6 

 14. 4-41-2 



19. 5-35. 9 



17. 6-33. 5 



17. 4-44. 5 



25. 2-63. 6 



26. 9-53. 1 



23. 8-47. 3 

 33. 6, 56. 7 



26. 3-39. 3 



16. 8-47. 5 



18. 0-45. 



28. 5-58. 4 

 18. 0-56. 7 



24. 3-57. 7 



Percent 



40 



25 







71 

 33 

 11 



33 

 3 

 





 

 





 13 

 11 







4 

 



Percent 

 60 

 50 

 60 



14 

 50 



78 



44 

 62 

 41 



25 



25 







40 



7 



33 



10 



17 



28 



Percent 







25 



40 



14 



8 



11 



22 



28 

 47 



50 

 25 

 50 



60 

 40 

 33 



55 

 39 



47 



Percent 

 



700 to 799 







800 and over 



SP 8 HVO: 



Less than 400 __ 

 400 to 599 











8 



600 to 799 







SPE: 



Less than 300 



300 to 499 







8 



500 to 699 



12 



Weight loss more than 100 

 grams: 

 Stock: 



300 to 699 



25 



700 to 799 



50 



800 and over 

 SP 8 HVO: 



Less than 500 

 500 to 699_ _ 



50 







40 



700 and over 

 SPE: 



Less than 400 _ 

 400 to 499 



22 



35 

 39 



500 to 699 



25 







before sacrifice, and the results have been sepa- 

 rated accordingly. Even when weight loss was 

 less than fOO grams, adrenal weights tended to be 

 larger than those found in animals that were main- 

 taining weight. Adrenals from rats fed SPE diet 

 were consistently larger than those from rats of 



comparable age fed stock or SP 8 HVO diets. 

 Adrenals tended to increase in size with age, in 

 contrast to the results for rats that were maintain- 

 ing weight. When weight loss exceeded 100 grams, 

 adrenals were large for all age groups and the in- 

 fluence of diet was no longer apparent. 



53 



