Effects of gonad removal on the anterior pituitary of the fowl from 10 days to 6 years
✍ Scribed by Payne, Fernandus
- Publisher
- John Wiley and Sons
- Year
- 1947
- Tongue
- English
- Weight
- 604 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0003-276X
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✦ Synopsis
This paper is one of a series on the cytology of the pituitary of the fowl and deals with the effects of castration and ovariectomy. It is well established in both birds and mammals that the pituitary is modified morphologically and physiologically by the removal of the gonads. The recorded results, however, are not uniform. Some of the differences are probably due to variations between species while others may be due to differences in observations. No attempt will be made to review the literature as this has been done in recent years by Severinghaus, '32, '37 and '39, who thinks the evidence is fairly conclusive that the basophiles increase in size and number and that the granular acidophiles recede following castration. At present we need to know, most of all, the facts, for without them correct interpretations cannot be derived. What are the facts in the fowl?
My observations, limited to White and Brown Leghorn varieties, cover an age range beginning with 10 days and ending with 6 years. They give us, I think, the significant changes during this period.
The gonads were removed in all White Leghorn fowls a t ages varying from 36 hours to 14 days. The exact age a t castration of the Brown Leghorn capons is unknown. They were received from L. V. Domm, of the University of Chicago, and Contribution no. 362.