Effects of rate of gain on scrotal circumference and histopathologic features of the testes of half-sibling yearling beef bulls

American Journal of Veterinary Research

Volumn 57, Issue 6, 1996, Pages 844-847

  Ohl, M W ^a   Ott, R S ^a   Faulkner, D B ^a   Hornbuckle II, T ^a   Hess, R A ^a   Cmarik, G F ^a   Zinn, G M ^a  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AGING; ANIMAL; ANIMAL DISEASE; ARTICLE; CATTLE; CYTOLOGY; DIET; GROWTH, DEVELOPMENT AND AGING; HISTOLOGY; MALE; PATHOLOGY; PHYSIOLOGY; RANDOMIZATION; SCROTUM; SEMINIFEROUS TUBULE; SPERM; SPERMATOZOON; TESTIS; WEIGHT GAIN;

AGING; ANIMALS; CATTLE; DIET; MALE; RANDOM ALLOCATION; SCROTUM; SEMEN; SEMINIFEROUS TUBULES; SPERMATOZOA; TESTIS; WEIGHT GAIN;

EID: 0030162232     PISSN: 00029645     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (16)

1. Davies DV, Mann T, Towson LEA. Effect of nutrition on the onset of male sex hormone activity and sperm formation in monozygous bull calves. Proc R Soc (Lond) 1957;147:332.
2. Vandemark NL, Mauger RE. Effect of energy intake on reproductive performance of dairy bulls. I. Growth, reproductive organs, and puberty. J Dairy Sci 1964;47:798-904.
3. Cates WF. Observations on scrotal circumference and its relationship to classification of bulls, in Proceedings. Annu Meet Soc Theriogenol 1975;1-18.
4. Veeramachaneni DNR, Ott RS, Heath EH, et al. Pathophysiology of small testes in beef bulls: relationships between scrotal circumference, histopathologic features of testes and epididymides, seminal characteristics, and endocrine profiles. Am J Vet Res 1986; 47:1988-1999.
5. Madrid N, Ott RS, Veeramachaneni DNR, et al. Scrotal circumference, seminal characteristics, and testicular lesions of yearling Angus bulls. Am J Vet Res 1988;49:579-585.
6. Lagerlof N. Hereditary forms of sterility in Swedish cattle breeds. Fertil Steril 1951;2:230-239.
7. SAS user's guide: statistics, version 5 ed. Cary, NC: SAS Institute Inc, 1985.
8. Ott RS. Breeding soundness examination of bulls. In: Morrow DA, ed. Current therapy in theriogenology. 2nd ed. Philadelphia: WB Saunders Co, 1986;125-136.
9. Baker JF, Lunt DK. Comparison of production characteristics from birth through slaughter of calves sired by Angus, Charolais, or Piedmontese bulls. J Anim Sci 1990;68:1562-1568.
10. Gordon SJ, Miller HL, Evenson DP, et al. Comparison of anabolic implants on reproductive function, performance, and carcass characteristics in weaned beef bulls. Can J Anim Sci 1988;68:367-376.
11. Lunstra DD, Echternkamp SE. Puberty in beef bulls: aerosome morphology and semen quality in bulls of different breeds. J Anim Sci 1982;55:638-648.
12. Berndtson WE, Igboeli G, Parker WG. The number of Sertoli cells in mature Holstein bulls and their relationship to quantitative aspects of spermatogenesis. Biol Reprod 1987;37:60-67.
13. Courot M, Hochereau-de Reviers M, Ortavant R. Spermatogenesis. In: Johnson AD, Gomes WR, Vandemark NL, eds. The testis. Vol 1. New York: Academic Press Inc, 1970;339-432.
14. Orth JM. Proliferation of Sertoli cells in fetal and postnatal rats: a quantitative autoradiographic study. Anat Rec 1982;203:485-492.
15. Floyd JG, Ott RS, Hixon JE, et al. Effects of zeranol implanted during a postweaning weight gain test on testicular, semen, and endocrine characteristics of bulls. Am J Vet Res 1994;55:556-560.
16. McEntee K. The male genital system. In: KVG Jubb, PC Kennedy, eds. Pathology oj domestic animals. 2nd ed. Vol 1. New York: Academic Press Inc, 1970;443-485.