Bovine Reproduction. Группа авторов
Читать онлайн книгу.
Brito, L., Barth, A., Rawlings, N. et al. (2007). Effect of improved nutrition during calfhood on serum metabolic hormones, gonadotropins, and testosterone concentrations, and on testicular development in bulls. Domest. Anim. Endocrinol. 33: 460–469.
88 88 Brito, L., Barth, A., Rawlings, N. et al. (2007). Effect of nutrition during calfhood and peripubertal period on serum metabolic hormones, gonadotropins and testosterone concentrations, and on sexual development in bulls. Domest. Anim. Endocrinol. 33: 1–18.
89 89 Harstine, B., Maquivar, M., Helser, L. et al. (2015). Effects of dietary energy on sexual maturation and sperm production in Holstein bulls. J. Anim. Sci. 93: 2759–2766.
90 90 Dance, A., Thundathil, J., Wilde, R. et al. (2015). Enhanced early‐life nutrition promotes hormone production and reproductive development in Holstein bulls. J. Dairy Sci. 98: 987–988.
91 91 Byrne, C., Fair, S., English, A. et al. (2018). Plane of nutrition before and after 6 months of age in Holstein‐Friesian bulls: I. Effects on performance, body composition, age at puberty, and postpubertal semen production. J. Dairy Sci. 101: 3447–3459.
92 92 Lunstra, D., Gregory, K., and Cundiff, L. (1988). Heritability estimates and adjustment factors for the effects of bull age and age of dam on yearling testicular size in breeds of bulls. Theriogenology 30: 127–136.
93 93 Bagu, E., Davies, K., Epp, T. et al. (2010). The effect of parity of the dam on sexual maturation, serum concentrations of metabolic hormones and the response to luteinizing hormone releasing hormone in bull calves. Reprod. Domest. Anim. 45: 803–810.
94 94 Mann, T., Rowson, L., Short, R., and Skinner, J. (1967). The relationship between nutrition and androgenic activity in pubescent twin calves, and the effect of orchitis. J. Endocrinol. 38: 455–468.
95 95 Meacham, T., Cunha, T., Warnick, A. et al. (1963). Influence of low protein rations on growth and semen characteristics of young beef bulls. J. Anim. Sci. 22: 115–120.
96 96 Meacham, T., Warnick, A., Cunha, T. et al. (1964). Hematological and histological changes in young beef bulls fed low protein rations. J. Anim. Sci. 23: 380–384.
97 97 Pruitt, R. and Corah, L. (1985). Effect of energy intake after weaning on the sexual development of beef bulls. I. Semen characteristics and serving capacity. J. Anim. Sci. 61: 1186–1193.
98 98 Pruitt, R., Corah, L., Stevenson, J., and Kiracofe, G. (1986). Effect of energy intake after weaning on the sexual development of beef bulls. II. Age at first mating, age at puberty, testosterone and scrotal circumference. J. Anim. Sci. 63: 579–585.
99 99 Skinner, J. (1981). Nutrition and fertility in pedigree bulls. In: Environmental Factors in Mammal Reproduction (eds. D. Gilmore and B. Cook), 160–168. London: MacMillan.
100 100 Coulter, G. and Kozub, G. (1984). Testicular development, epididymal sperm reserves and seminal quality in two‐year‐old Hereford and Angus bulls: effects of two levels of dietary energy. J. Anim. Sci. 59: 432–440.
101 101 Coulter, G., Carruthers, T., Amann, R., and Kozub, G. (1987). 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. 64: 254–260.
102 102 Coulter, G. and Bailey, D. (1988). Epididymal sperm reserves in 12‐month‐old Angus and Hereford bulls: effects of bull strain plus dietary energy. Anim. Reprod. Sci. 16: 169–175.
103 103 Coulter, G., Cook, R., and Kastelic, J. (1997). Effects of dietary energy on scrotal surface temperature, seminal quality, and sperm production in young beef bulls. J. Anim. Sci. 75: 1048–1052.
104 104 Seidel G Jr, Pickett B, Wilsey C, Seidel S., (1980) Effect of high level of nutrition on reproductive characteristics of Angus bulls. Proceedings of the 9th International Congress on Animal Reproduction and Artificial Insemination. Madrid: Editorial Garsi, p. 359.
105 105 Hopkins, F. and Spitzer, J. (1997). The new Society for Theriogenology breeding soundness evaluation system. Vet. Clin. North Am. Food Anim. Pract. 13: 283–293.
106 106 Kennedy, S., Spitzer, J., Hopkins, F. et al. (2002). Breeding soundness evaluations of 3,648 yearling beef bulls using the 1993 Society for Theriogenology guidelines. Theriogenology 58: 947–961.
107 107 Higdon, H., Spitzer, J., Hopkins, F., and Bridges, W. Jr. (2000). Outcomes of breeding soundness evaluation of 2,898 yearling bulls subjected to different classification systems. Theriogenology 53: 1321–1332.
108 108 Chenoweth, P., Chase, C. Jr., Thatcher, M. et al. (1996). Breed and other effects on reproductive traits and breeding soundness categorization in young beef bulls in Florida. Theriogenology 46: 1159–1170.
109 109 Godfrey, R. and Dodson, R. (2005). Breeding soundness evaluations of Senepol bulls in the US Virgin Islands. Theriogenology 63: 831–840.
110 110 Carson, R. and Wenzel, J. (1997). Observations using the new bull‐breeding soundness evaluation forms in adult and young bulls. Vet. Clin. North Am. Food Anim. Pract. 13: 305–311.
111 111 Barth, A. and Waldner, C. (2002). Factors affecting breeding soundness classification of beef bulls examined at the Western College of Veterinary Medicine. Can. Vet. J. 43: 274–284.
112 112 Fonseca, V., Santos, N., and Malinski, P. (1997). Andrological classification of zebu bulls based on scrotal perimeter and morpho‐physic of the semen characteristics. Rev. Bras. Reprod. Anim. 21: 36–39.
113 113 Vale Filho, V., Bergmann, J., Andrade, V. et al. (1997). Andrologic characterization of Nelore bulls selected for the first breed season. Rev. Bras. Reprod. Anim. 21: 42–44.
114 114 Hahn, J., Foote, R., and Seidel, G. Jr. (1969). Testicular growth and related sperm output in dairy bulls. J. Anim. Sci. 29: 41–47.
115 115 Coulter, G. and Foote, R. (1976). Relationship of testicular weight to age and scrotal circumference of Holstein bulls. J. Dairy Sci. 59: 730–732.
116 116 Quirino, C., Bergmann, J., Vale Filho, V. et al. (1999). Evaluation of four mathematical functions to describe scrotal circumference maturation in Nellore bulls. Theriogenology 52: 25–34.
117 117 Loaiza‐Echeverri, A., Bergmann, J., Toral, F. et al. (2013). Use of nonlinear models for describing scrotal circumference growth in Guzerat bulls raised under grazing conditions. Theriogenology 79: 751–759.
118 118 Sylla, L., Stradaioli, G., Borgami, S., and Monaci, M. (2007). Breeding soundness examination of Chianina, Marchigiana, and Romagnola yearling bulls in performance tests over a 10‐year period. Theriogenology 67: 1351–1358.
119 119 Troconiz, J., Beltran, J., Bastidas, H. et al. (1991). Testicular development, body weight changes, puberty and semen traits of growing Guzerat and Nellore bulls. Theriogenology 35: 815–826.
120 120 Silveira, T., Siqueira, J., Guimaraes, S. et al. (2010). Maturação sexual e parâmetros reprodutivos em touros da raça Nelore criados em sistema extensivo. Rev. Bras. Zootec. 39: 503–511.
121 121 Menegassi, S., Barcellos, J., Peripolli, V. et al. (2011). Measurement of scrotal circumference in beef bulls in Rio Grande do Sul. Arq. Bras. Med. Vet. Zootec. 63: 87–93.
122 122 Smith, B., Brinks, J., and Richardson, G. (1989). Estimation of genetic parameters among breeding soundness examination components and growth traits in yearling bulls. J. Anim. Sci. 67: 2892–2896.
123 123 Beef Improvement Federation. (2010), Guidelines for Uniform Beef Improvement Programs, 9th edn. Available at http://www.beefimprovement.org.
124 124 Casas, E., Lunstra, D., Cundiff, L., and Ford, J. (2007). Growth and pubertal development of F1 bulls from Hereford, Angus, Norwegian Red, Swedish Red and White, Friesian, and Wagyu sires. J. Anim. Sci. 85: 2904–2909.
125 125 Chase, C. Jr., Chenoweth, P., Larsen, R. et al. (1997). Growth and reproductive development from weaning through 20 months of age among breeds of bulls in subtropical Florida. Theriogenology 47: