Testicular and epididymal function during the peripuberal period in Brahman bulls receiving various amounts of protein degradable in the rumen

Theriogenology

Volumn 45, Issue 2, 1996, Pages 477-488

  Rocha, A ^a,b   Carpena, M ^a   Triplett, B ^a   Neuendorff, D A ^a   Forrest, D W ^a   Randel, R D ^a  

^a TEXAS A AND M UNIVERSITY   (United States)

^b LOUISIANA STATE UNIVERSITY   (United States)

Author keywords

Bulls; Epididymis; Intake protein; Testicles

Indexed keywords

GLYCINE MAX;

EID: 0345497566     PISSN: 0093691X     EISSN: None     Source Type: Journal    
DOI: 10.1016/0093-691X(95)00384-K     Document Type: Article

References (34)

1. Fields MJ, Hentges JF Jr, Cornelisse KW. Aspects of the sexual development of Brahman versus Angus bulls in Florida. Theriogenology 1982;18:17-31.
2. Neuendorff DA, Rutter LM, Peterson LA, Randel, RD. Effect of lasalocid on growth and puberal development in Brahman bulls. J Anim Sci 1985;61:1049-1057.
3. Nolan CJ, Neuendorff DA, Godfrey RW, Harms PG, Welsh TW Jr, McArthur NH, Randel RD. Influence of dietary energy intake on prepuberal development of Brahman bulls. J Animal Sci 1990;68:1087-1096.
4. Ndama PH, Entwistle KW, Linsday JA. Effect of protected protein supplements on some testicular traits in Brahman bulls. Theriogenology 1983;20:639-650.
5. Rocha A, Carpena M, Triplett B, Forrest DW, Randel RD. Effect of ruminally undegradable protein from fish meal on growth and reproduction of peripuberal Brahman bulls. J Anim Sci 1995;4:947-953.
6. NRC. Nutrient requirements of beef cattle. (6th Ed.). National Academy Press. Washington, DC. 1984.
7. NRC. Ruminal nitrogen usage. National Academy Press. Washington, DC. 1985.
8. Amann RP, Lambiase JT. The male rabbit. III. determination of daily sperm production by means of testicular homogenates. J Anim Sci. 1969;28:369-374.
9. Amann RP, Kavanaugh JF, Griel LC Jr, Voglmayr JK. Sperm production of Holstein bulls determined from testicular spermatid reserves, after cannulation of rete testis or vas deferens, and by daily ejaculation. J Dairy Sci 1974;57:93-99.
10. SAS. SAS User's Guide: Statistics. Cary, NC: SAS Institute Inc, 1992.
11. Almquist JO, Amann RP. Reproductive capacity of dairy bulls. II. Gonadal and extragonadal sperm reserves as determined by direct counts and depletion trials: dimensions and weights of genitalia. J Dairy Sci 1961;44:1668-1678.
12. Weisgold AD, Almquist JO. Reproductive capacity of beef bulls. VI. Daily spermatozoal production, spermatozoal reserves and dimensions and weight of reproductive organs. J Anim Sci 1979;48:351-358.
13. Tegegne A, Entwistle KW, Mukasa-Mugerwa, E. Genotype differences in gonadal and extragonadal sperm reserves in mature zebu bulls in Ethiopia. Anim Reprod Sci 1992;29:205-211.
14. Tegegne A, Taddele Y, Kassa T. Gonadal and extragonadal sperm reserves in two breeds of mature zebu (Bos indicus) bulls in Ethiopia. Trop Agric (Trinidad) 1992;69:243-246.
15. Wildeus S, Entwistle KW. Postpuberal changes in gonadal and extragonadal sperm reserves in Bos indicus strain bulls. Theriogenology 1982;17:655-667.
16. Tegegne A, Dembarge Y, Kassa T. Gonadal and extragonadal sperm reserves in Boran and Boran x Friesian bulls raised on two planes of nutrition in the highlands of Ethiopia. Theriogenology 1992;37:953-961.
17. Courot M, Hocheraeu de Reviers MT, Ortovan R. Spermatogenesis. In: Johnson AD, Gomes WR, VanDemark NL (eds), The testis. Vol I. New York: Academic Press, 1970;339-432.
18. Coulter GH, Carruthers TD, Amann RP, Kozub GC. Testicular development, daily sperm production and epididymal sperm reserves in 15-mo-old Angus and Hereford bulls: effects of bull strain plus dietary energy. J Anim Sci 1987;64:254-260.
19. Wolfe FR, Almquist JO, Hall EB. Prepuberal changes and puberal characteristics of beef bulls on high nutrient allowance. J Anim Sci 1965;24:761-765.
20. Lunstra DD, Ford JJ, Echternkamp SE. Puberty in beef bulls: Hormones concentrations, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds. J Anim Sci 1978;46:1054-1062.
21. Igboeli G, Rakha AM. Puberty and related phenomena in Angoni (Short Horn Zebu) bulls. J Anim Sci 1971;33:647-650.
22. Oyedipe SR, Kumi-Diaka J, Osori DIK. Determination of onset of puberty in zebu bulls under tropical conditions of northern Nigeria. Theriogenology 1981;16:419-432.
23. Rutter LM, Neuendorff DA, Randel RD, Peterson LA. Effects of lasalocid on the GnRH-induced LH and testosterne release during puberal development in Brahman bull. J Anim Sci 1991;69:1593-1600.
24. Troconiz JF, Beltran J, Bastidas H, Larreal H, Bastidas P. Testicular development, body weight changes, puberty and semen traits of growing Guzerat and Nellore bulls. Theriogenology 1991;35:815-826.
25. Entwistle KW. Factors influencing reproduction in beef cattle in Australia. Aust. Meat Res. Committee Rev. n.43, Sydney, Australia; 1983;30pp.
26. McMillan KL, Newhook C, Watson JD. Testicular and epididymal sperm numbers in young friesian bulls. NZJ Agric Res 1972;15:255-299.
27. Coulter GH, Bailey DRC. Epididymal sperm reserves in 12-month-old Angus and Hereford bulls: effect of bull strain plus dietary energy. Anim Reprod Sci 1988;16:168-175.
28. Boyd LJ, VanDemark NL. Spermatogenic capacity of the male bovine. I. A measurement technique. J Dairy Sci 1957;40:689-697.
29. VanDemark NL, Mauger RE. Effect of energy intake on reproductive performance of dairy bulls. I. Growth, reproductive organs and puberty. J Dairy Sci 1964;47:798-802.
30. Coulter GH, Foote RH. Relationship of testicular weight to age and scrotal circumference of Holstein bulls. J. Dairy Sci 1976;59:730-732.
31. Coulter GH, Foote RH. Bovine testicular measurements as indicator of reproductive performance and their relationship to productive traits in cattle: A review. Theriogenology 1979;11:297-311.
32. Austin JW, Hupp EW, Murphee RL. Comparison of quality of bull semen collected in an artificial vagina and by electroejaculation. J Dairy Sci 1961;44:2292-2297.
33. Carrol EJ, Ball L, Scot JA. Breeding soudness in bulls - A summary of 10,490 examinations. J Am Vet Med Assoc 1963;142:1105-1111.
34. Anonymous. Manual for breeding soudness examination of bulls. J Society Theriogenology 1983; XII 1-65.