The relationship between scrotal circumference at weaning and at one year of age in beef bulls

Canadian Veterinary Journal

Volumn 41, Issue 7, 2000, Pages 541-546

  Barth, Albert D ^a   Ominski, Kim H ^b  

^a UNIVERSITY OF SASKATCHEWAN   (Canada)

^b GOVERNMENT OF MANITOBA   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ANIMAL; ANIMAL HUSBANDRY; ARTICLE; CATTLE; FERTILITY; GROWTH, DEVELOPMENT AND AGING; HISTOLOGY; MALE; PHYSIOLOGY; REFERENCE VALUE; SCROTUM; WEANING;

ANIMAL HUSBANDRY; ANIMALS; CATTLE; FERTILITY; MALE; REFERENCE VALUES; SCROTUM; WEANING;

EID: 0034218877     PISSN: 00085286     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (22)

1. Farid A, Makarechian M, Price MA, Berg RT. Repeatability of reproductive performance of beef bulls as yearlings and two-year-olds at pasture. Anim Reprod Sci 1987;14:21-29.
2. Makarechian M, Arthur PF. A comparison of natural service fertility of yearling and two-year-old bulls on pasture. Theriogenology 1993;39:835-845.
3. Carter AH, Cox EH. Observations on yearling mating of beef cattle. Proc NZ Soc Anim Prod 1973;33:94-113.
4. Tomky DF, Sullins JL, Chenowith PJ, Pexton JE. Breeding soundness and fertility of beef bulls breeding estrus synchronized females. Proc West Sect Am Soc Anim Sci 1979;30:211-214.
5. Gregory KE, Lunstra DD, Cundiff LV, Koch RM. Breed effects and heterosis in advanced generations of composite populations for puberty and scrotal traits of beef cattle. J Anim Sci 1991; 69:2795-2807.
6. Wolf FR, Almquist JO, Hale EB. Prepubertal behavior and pubertal characteristics of beef bulls on high nutrient allowance. J Anim Sci 1965;24:761-765.
7. Killian GJ, Amann RP. Reproductive capacity of dairy bulls. IX. Changes in reproductive organ weights and semen characteristics of Holstein bulls during the first thirty weeks after puberty. J Dairy Sci 1972;55:1631-1635.
8. Almquist JO, Branas RJ, Barber KA. Postpubertal changes in semen production of Charolais bulls ejaculated at high frequency and the relation between testicular measurement and sperm output. J Anim Sci 1976;42:670-680.
9. Lunstra DD, Ford JJ, Echternkamp SE. Puberty in beef bulls: hormone concentrations, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds. J Anim Sci 1978;46:1054-1062.
10. Boyd GW, Healy VM, Mortimer RG, Piotrowski JR. Serving capacity tests are unable to predict the fertility of yearling bulls Theriogenology 1991;36:1015-1025.
11. Chenowith PJ, Farin PW, Mateous ER, Rupp GP, Pexton JE. Relationships between breeding soundness and sex drive classifications in beef bulls. Theriogenology 1988;30:227-233.
12. Lunstra, DD. Ford JJ, Echternkamp SE. Puberty in beef bulls: Hormone concentration, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds. J Anim Sci 1978;46:1054-1062.
13. Gregory KE, Lunstra DD, Cundiff LV, Koch RM. Breed effects and heterosis in advanced generations of composite populations for puberty and scrotal traits of beef cattle. J Anim Sci 1991;69 2795-2807.
14. Cates WF, Nicholson HH, Crow GH, Janzen ED. Testicular development in record of performance bulls. Proc Annu Meet Soc Theriogen 1981:16-30.
15. Pratt SL, Spitzer JC, Webster HW, Hupp HD, Bridges WC Jr. Comparison of methods for predicting scrotal circumference to growth traits in beef bulls. J Anim Sci 1991;69:2711-2720.
16. Coe PH, Gibson CD. Adjusted 200-day scrotal size as a predictor of 365-day scrotal circumference. Theriogenology 1993;40: 1065-1072.
17. Coulter GH, Mapletoft RJ, Kozub GC, Cates WF. Scrotal circumference of two-year-old bulls of several beef breeds. Theriogenology 1987;27:485-491.
18. Barth AD. Bull Breeding Soundness Evaluation. The Western Canadian Association of Bovine Practitioners, 1997:14-15.
19. Smith RD. Veterinary Clinical Epidemiology. A Problem Oriented Approach. Boston: Butterworth-Heinemann, 1991:57-74.
20. Lunstra DD, Gregory KE, Cundiff LV. Heritability estimates and adjustment factors for the effects of bull age and age of dam on yearling testicular size in breeds of bulls. Theriogenology 1988;30:127-136
21. Pruitt RJ and Corah LR. Effect of energy intake after weaning on the sexual development of beef bulls. 1. Semen characteristics and serving capacity. J Anim Sci 1985;61:1186-1193.
22. Barth AD, Cates WF, Harland RJ. The effect of amount of body fat and loss of fat on breeding soundness classification of bulls. Can Vet J 1995;36:758-763.