Bovine Reproduction. Группа авторов
Читать онлайн книгу.
semen quality, sperm production, and quantitative testicular histology in beef bulls. Theriogenology 78: 69–76.
46 46 Brito, L., Silva, A., Rodrigues, L. et al. (2002). Effect of age and genetic group on characteristics of the scrotum, testes and testicular vascular cones, and on sperm production and semen quality in AI bulls in Brazil. Theriogenology 58: 1175–1186.
47 47 Wolf, F., Almquist, J., and Hale, E. (1965). Prepuberal behavior and puberal characteristics of beef bulls on high nutrient allowance. J. Anim. Sci. 24: 761–765.
48 48 Lunstra, D., Ford, J., and Echternkamp, S. (1978). Puberty in beef bulls: hormone concentrations, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds. J. Anim. Sci. 46: 1054–1062.
49 49 Jimenez‐Severiano, H. (2002). Sexual development of dairy bulls in the Mexican tropics. Theriogenology 58: 921–932.
50 50 Aravindakshan, J., Honaramooz, A., Bartlewski, P. et al. (2000). Pattern of gonadotropin secretion and ultrasonographic evaluation of developmental changes in the testis of early and late maturing bull calves. Theriogenology 54: 339–354.
51 51 Killian, G. and Amann, R. (1972). 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. 55: 1631–1635.
52 52 Wildeus, S. and Entwistle, K. (1982). Postpubertal changes in gonadal and extragonadal sperm reserves in Bos indicus strain bulls. Theriogenology 17: 655–667.
53 53 Weisgold, A. and Almquist, J. (1979). Reproductive capacity of beef bulls. VI. Daily spermatozoal production, spermatozoal reserves and dimensions and weight of reproductive organs. J. Anim. Sci. 48: 351–358.
54 54 Amann, R., Kavanaugh, J., Griel, L. Jr., and Voglmayr, J. (1974). 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. 57: 93–99.
55 55 Almquist, J. (1982). Effect of long term ejaculation at high frequency on output of sperm, sexual behavior, and fertility of Holstein bulls; relation of reproductive capacity to high nutrient allowance. J. Dairy Sci. 65: 814–823.
56 56 Godinho, H. and Cardoso, F. (1984). Gonadal and extragonadal sperm reserves of the Brazilian Nelore zebu (Bos indicus). Andrologia 16: 131–134.
57 57 Brito, L., Silva, A., Barbosa, R., and Kastelic, J. (2004). Testicular thermoregulation in Bos indicus, crossbred and Bos taurus bulls: relationship with scrotal, testicular vascular cone and testicular morphology, and effects on semen quality and sperm production. Theriogenology 61: 511–528.
58 58 Amann R, Almquist J. (1976), Bull management to maximize sperm output. Proceedings of the 6th Technical Conference on Artificial Insemination and Reproduction. Columbia, MO: National Association of Animal Breeders, pp. 1–10.
59 59 Amann R. (1990), Management of bulls to maximize sperm output. Proceedings of the 13th Technical Conference on Artificial Insemination and Reproduction. Columbia, MO: National Association of Animal Breeders, pp. 84–91.
60 60 Lunstra, D. and Echternkamp, S. (1982). Puberty in beef bulls: acrosome morphology and semen quality in bulls of different breeds. J. Anim. Sci. 55: 638–648.
61 61 Brito, L., Barth, A., Wilde, R., and Kastelic, J. (2012). Effect of growth rate from 6 to 16 months of age on sexual development and reproductive function in beef bulls. Theriogenology 77: 1398–1405.
62 62 Arteaga, A., Baracaldo, M., and Barth, A. (2001). The proportion of beef bulls in western Canada with mature spermiograms at 11 to 15 months of age. Can. Vet. J. 42: 783–787.
63 63 Persson, Y. and Soderquist, L. (2005). The proportion of beef bulls in Sweden with mature spermiograms at 11–13 months of age. Reprod. Domest. Anim. 40: 131–135.
64 64 Felton‐Taylor, J., Prosser, K., Hernandez‐Medrano, J. et al. (2020). Effect of breed, age, season and region on sperm morphology in 11,387 bulls submitted to breeding soundness evaluation in Australia. Theriogenology 142 (1–7).
65 65 Brito, L., Barth, A., Wilde, R., and Kastelic, J. (2012). Testicular vascular cone development and its association with scrotal temperature, semen quality, and sperm production in beef bulls. Anim. Reprod. Sci. 134: 135–140.
66 66 Cook, R., Coulter, G., and Kastelic, J. (1994). The testicular vascular cone, scrotal thermoregulation, and their relationship to sperm production and seminal quality in beef bulls. Theriogenology 41: 653–671.
67 67 Kirby, A. (1953). Observations on the blood supply of the bull testis. Br. Vet. J. 109: 464–472.
68 68 Kirby, A. and Harrison, R. (1954). A comparison of the vascularization of the testis in Afrikaner and English breeds of bull. Proc. Soc. Study Fertil. 6: 129–139.
69 69 Hofmann, R. (1960). Die Gefabarchitektur des bullenhodens, Zugleich eim Versuch ihrer funktionellen Deutung. Zentralbl. Vetrinarmed. 7: 59–93.
70 70 Almquist, J. and Amann, R. (1961). Reproductive capacity of dairy bulls. II. Gonadal and extra‐gonadal sperm reserves as determined by direct counts and depletion trials: dimensions and weight of genitalia. J. Dairy Sci. 44: 1668–1678.
71 71 Abdel‐Razek, A. and Ali, A. (2005). Developmental changes of bull (Bos taurus) genitalia as evaluated by caliper and ultrasonography. Reprod. Domest. Anim. 40: 23–27.
72 72 Coulter, G. (1986). Puberty and postpubertal development of beef bulls. In: Current Therapy in Theriogenology, 2e (ed. A.D. Morrow), 142–148. Philadelphia: Saunders.
73 73 Ashdown, R., David, J., and Gibbs, C. (1979). Impotence in the bull: 1. Abnormal venous drainage of the corpus cavernosum penis. Vet. Rec. 104: 423.
74 74 Barber, K. and Almquist, J. (1975). Growth and feed efficiency and their relationship to puberal traits of Charolais bulls. J. Anim. Sci. 40: 288–301.
75 75 Price, E. and Wallach, S. (1991). Development of sexual and aggressive behaviors in Hereford bulls. J. Anim. Sci. 69: 1019–1027.
76 76 Lane, S., Kiracofe, G., Craig, J., and Schalles, R. (1983). The effect of rearing environment on sexual behavior of young beef bulls. J. Anim. Sci. 57: 1084–1089.
77 77 Price, E. and Wallach, S. (1990). Short‐term individual housing temporarily reduces the libido of bulls. J. Anim. Sci. 68: 3572–3577.
78 78 Boyd, G. and Corah, L. (1988). Effect of sire and sexual experience on serving capacity of yearling beef bulls. Theriogenology 29: 779–790.
79 79 Price, E. and Wallach, S. (1991). Inability to predict the adult sexual performance of bulls by prepuberal sexual behaviors. J. Anim. Sci. 69: 1041–1046.
80 80 Chenoweth, P., Brinks, J., and Nett, T. (1979). A comparison of three methods of assessing sex‐drive in yearling beef bulls and relationships with testosterone and LH levels. Theriogenology 12: 223–233.
81 81 Landaeta‐Hernandez, A., Chenoweth, P., and Berndtson, W. (2001). Assessing sex‐drive in young Bos taurus bulls. Anim. Reprod. Sci. 66: 151–160.
82 82 de Araujo, J., Borgwardt, R., Sween, M. et al. (2003). Incidence of repeat‐breeding among Angus bulls (Bos taurus) differing in sexual performance. Appl. Anim. Behav. Sci. 81: 89–98.
83 83 Chenoweth, P., Farin, P., Mateos, E. et al. (1984). Breeding soundness and sex drive by breed and age in beef bulls used for natural mating. Theriogenology 22: 341–349.
84 84 Bratton, R., Musgrave, S., Dunn, H., and Foote, R. (1959). Causes and prevention of reproductive failure in dairy cattle: II. Influence of underfeeding and overfeeding from birth to 80 weeks of age on growth, sexual development, and semen production in Holstein bulls. Cornell Uni. Agric. Experiment. Station Bull. 940: 1–45.
85 85 Flipse, R. and Almquist, J. (1961). Effect of total digestible nutrient intake from birth to four years of age on growth and reproductive development and performance of dairy bulls. J. Dairy Sci. 44: 905–914.
86 86 Brito, L., Barth, A., Rawlings, N. et al. (2007). Effect of feed restriction during calfhood