Testicular development and endocrine function in boars fed altrenogest (1986)

Kansas Agricultural Experiment Station Research Reports Volume 0 Issue 10 Swine Day (1968-2014) Article 344 1986 Testicular development and endocrine function in boars fed altrenogest E F. Kluber III J Ernest Minton Jeffrey S. Stevenson See next page for additional authors Follow this and additional works at: https://newprairiepress.org/kaesrr Part of the Other Animal Sciences Commons Recommended Citation Kluber, E F. III; Minton, J Ernest; Stevenson, Jeffrey S.; and Davis, Duane L. (1986) "Testicular development and endocrine function in boars fed altrenogest," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 10. https://doi.org/10.4148/2378-5977.6184 This report is brought to you for free and open access by New Prairie Press. It has been accepted for inclusion in Kansas Agricultural Experiment Station Research Reports by an authorized administrator of New Prairie Press. Copyright 1986 Kansas State University Agricultural Experiment Station and Cooperative Extension Service. Contents of this publication may be freely reproduced for educational purposes. All other rights reserved. Brand names appearing in this publication are for product identification purposes only. No endorsement is intended, nor is criticism implied of similar products not mentioned. K-State Research and Extension is an equal opportunity provider and employer. Testicular development and endocrine function in boars fed altrenogest Abstract Crossbred male pigs were used to evaluate the influence of a synthetic progestogen on reproductive development. Concentrations of luteinizing hormone (LH) and testosterone in blood serum were reduced while boars were being fed altrenogest (15 to 21 wk of age). At 25 wk of age (4 wk after withdrawal from altrenogest), weights of the testes and accessory reproductive glands and testicular content of sperm were reduced in boars that had been fed altrenogest. However, testicular weight and content of sperm had returned to control values following 12 wk after withdrawal from altrenogest. In addition, concentration of LH and testosterone in blood serum were similar for control boars and boars previously fed altrenogest. We conclude that suppression of normal reproductive development of growing boars by altrenogest merely delays the onset of sexual maturation but does not permanently affect testicular function.; Swine Day, Manhattan, KS, November 20, 1986 Keywords Swine day, 1986; Kansas Agricultural Experiment Station contribution; no. 87-133-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 507; Swine; Testicular development; Endocrine; Altrenogest Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 License. Authors E F. Kluber III, J Ernest Minton, Jeffrey S. Stevenson, and Duane L. Davis This research report is available in Kansas Agricultural Experiment Station Research Reports: https://newprairiepress.org/kaesrr/vol0/iss10/344  (...truncated)