References
- Aalbers, J. C. (1966). The contribution of the epididymis and the main accessory glands to ejaculates of bull semen. J. Fert. 11, 7.
- Austin, J. W., Leidy, R. B., Krise, G. M. and Hupp, E. W. (1968). Normal values for semen collected from Spanish goats by two methods. J. Applied Physiol. 24, 369.
- Hiroe. K., Tomizuka, Y., Waide, Y. and Masaki, J. (1960). Biochemical studies on the semen of domestic animals: on the chemical composition of seminal plasma of goats. I. Jap. J. Anim. Reprod. 6, 28.
- Igboeli, G. and Rakha, A. M. (1971a). Major cations in the semen of Angoni (short-horn zebu) bulls. J. Reprod. Fert. 24, 377.
- Igboeli, G. and Rakha, A. M. (1971b). Ejaculation and ejaculate characteristics of Angoni (shorthorn zebu) bulls. J. Reprod. Fert. 26, 183.
- Igboeli, G. and Rakha, A. M. (1971c). Seasonal changes in the ejaculate characteristics of Angoni (short-horn zebu) bulls. J. Anim. Sci. 33, 651.
- Iritani, A., Nishikawa, Y. and Nagasawa, S. (1964). Studies on the egg-yolk coagulating enzyme in goat semen. VII. Variations in the enzyme activity of the semen between breeding season and non-breeding season and in each ejaculate collected three times successively. Jap. J. Anim. Reprod. 10, 52.
- Lindner, H. R. and Mann, T. (1960). Relationship between the content of androgenic steroids in the testes and the secretory activity of the seminal vesicles of the bull. J. Endocrinolog) 21, 341.
- Mann, T. (1964). The Biochemistry of Semen and of the Male Reproductive Tract, p. 100. Methuen, London.
- Masaki, J. and Masuda, H. (1968). Seasonal variation in glyceryl phosphorylcholine content and related characteristics of goat semen. Proc. VIth Intern. Cong. Anim. Reprod. and A.I. (Paris) 1, 301.
- Mason, I. L. and Maule, J. P. (1960). The indigenous livestock of Eastern and Southern Africa, p. 112. Commonwealth Agricultural Bureaux, Edinburg.
- Moule, G. R., Brade, A. W. H. and Mattner, P. E. (1960). Effects of season, nutrition and hormone treatment on the fructose content of ram semen. Austr. J. Agr. Res. 17, 923.
- Quinn, P. J., White, I. G. and Wirrick, B. R. (1965). Studies on the distribution of major cations in semen and male accessory secretions. J. Reprod. Fert. 10, 379.
- Salisbury, G. W. and Cragle, R. G. (1956). Freezing point depressions and mineral levels of fluids of the ruminant male reproductive tract. Proc. IIIrd int. Congr. Anim. Reprod., Cambridge, 1, 25.
- Steel, R. G. D. and Torie, J. H. (1960). Principles and procedures of statistics, p. 67. McGraw-Hill, New York.
- Willis, J. B. (1960a). The determination of metals in blood serum by atomic absorption spectroscopy. I. Calcium. Spectrochim. Acta, 16, 259.
- Willis, J. B. (1960b). The determination of metals in blood serum by atomic absorption spectroscopy. II. Magnesium. Spectrochim. Acta, 16, 273.