Aguirre FV, Vázquez RR, Orihuela TA

Idioma: Español/Inglés
Referencias bibliográficas: 80
Paginas: 105-111
Archivo PDF: 267.64 Kb.

RESUMEN

Con el fin de desarrollar una metodología para entrenar carneros en la recolección de semen con vagina artificial (VA), montando un objeto inanimado, se utilizaron nueve animales que se sometieron a cuatro etapas de preparación. La primera con el propósito de lograr la manifestación del repertorio sexual natural, y el resto para llevar a cabo un programa de condicionamiento operante: cuando la respuesta correcta (monta) sucedía, en un inicio provocada por un estado de motivación sexual, se daba un refuerzo positivo o estímulo incondicionado (eyaculación), con lo que eventualmente y mediante un proceso de generalización la respuesta condicionada (primero montar a una hembra que no estaba en celo y luego a un objeto inanimado) se aprendió como la respuesta correcta. Al inicio de cada fase 33%-55% de los carneros no eyacularon; sin embargo, al final de las fases 1-3, todos eyacularon al menos una vez, al final del entrenamiento fue imposible recolectar semen de un macho. Se concluye que mediante la metodología propuesta 90% de los machos jóvenes pueden ser entrenados para montar objetos inanimados con el fin de recolectar semen mediante VA.

REFERENCIAS (EN ESTE ARTÍCULO)

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56. Foote RH. Factors influencing the quantity and quality of semen harvested from bulls, rams, boars and stallions. J Anim Sci 1978;47 Suppl 2:1-11.

57. Memon MA, Bretzlaff KN, Ott RS. Comparison of semen collection in goats. Theriogenology 1986;26:823-827.

58. Wulster-Radcliffe MC, Williams MA, Stellflug JN, Lewis GS. Technical note: artificial vagina vs. vaginalcollection vial for collecting semen from rams. J Anim Sci 2001;79:2964-2967.

59. Evans G, Maxwell WMC. Salamon`s artificial insemination of sheep and goats. London: Butterworth and Co., 1990.

60. Kippin TE, Cain SW, Pfaus JG. Estrous odors and sexually conditioned neutral odors activate separate neural pathways in the male rat. Neuroscience 2003;117:971-979.

61. Kippin TE, van der Kooy D. Excitotoxic lesions of the tegumental pedunculopontine nucleus impair copulation in naive male rats and block rewarding effects of copulation in experienced male rats. Eur J Neurosci 2003;18:2581-2591.

62. Agmo A. Sexual motivation-an inquiry into events determining the occurrence of sexual behavior. Behav Brain Res 1999;105:129-150.

63. Kelley AE. Ventral striatal control of appetitive motivation: role in ingestive behavior and reward-related learning. Neurosci Biobehav Rev 2004;27:765-766.

64. Pfaus JG, Kippin TE, Centeno S. Conditioning and sexual behavior: a review. Horm Behav 2001;40:291-321.

65. García E. Modificaciones al sistema de clasificación climática de Köppen. México (DF): Instituto de Geografía, Universidad Nacional Autónoma de México, 1981.

66. Katz LS, Price EO, Wallach SJR, Zenchak JJ. Sexual performance of rams reared with or without females after weaning. J Anim Sci 1988;66:1166-1173.

67. Jenkins WJ, Becker JB. Female rats develop conditioned place preferences for sex at their preferred interval. Horm Behav 2003;43:503-507.

68. Hemsworth PH, Coleman GJ. Human-livestock interaction. The stockperson and the productivity and welfare of intensively farmed animals. New York NY: CAB Intl, 1998:42,48-49 and 76-90.

69. Winfield CG, Makin AW. A note on the effect of continuous contact with ewes showing regular oestrus and of post-weaning growth rate on the sexual activity of Corriedale rams. Anim Prod 1978;27:361-364.

70. Price EO, Borgwardt R, Dally MR. Heterosexual experience differentially affects the expression of sexual behaviour in 6- and 8-month-old ram lambs. J Anim Sci 1995;73 (Suppl. 1):125.

71. McGrath PE, Boland MP Gordon I. Effect of sexual preparation procedures on semen characteristics in the ram. J Agric Cambridge 1979;93:761-763.

72. Lindsay DR, Dunsmore DG, Williams JD, Syme GJ.Audience effects on mating behavior of rams. Anim Behav 1976;24:818-821.

73. Katz LS, Price EO, Wallach SJR, Zenchak JJ. Sexual performance of rams reared with or without females after weaning. J Anim Sci 1998;66:1166-1173.

74. Hulet CV, Blackwell RL, Ercanbrack SK. Observations on sexually inhibited rams. J Anim Sci 1964;23:1095-1097.

75. Mattner PE, Braden AWH, George JM. Studies in flock mating of sheep: 5. Incidence, duration and effect flock fertility of initial sexual inactivity in young rams. Aust J Exp Agric Anim Husb 1973;13:35-41.

76. Price EO, Katz LS, Wallach SJR, Zenchak JJ. The relationship of male-male mounting to the sexual preferences of young rams. Appl Anim Behav Sci 1988;21:347-355.

77. Perkins A, Fitzgerald JA. Sexual orientation in domesticrams: some biological and social correlates. In: Ellis L, Ebertz L, editors. Sexual orientation: toward biological understanding. Westport, CT, Praeger Publ:1997:107-127.

78. González R, Orgeur P, Poindron P, Signoret JP. Femaleeffect in sheep. 1. The effects of sexual receptivity of females and sexual experience of rams. Reprod Nutr Dev 1991;31:97-102.

79. Rothe K. Die kunstliche Besamung bein Schwein. Arch Exp Vet Med 1963;17:957-1018. In: Hafez ESE, editor. The behaviour of domestic animals. Baltimore, The Williams and Wilkins Co, 1975:306-307.

80. Smidt D. Die Schweinevesamung. Hannover: Schaper 1965. In: Hafez ESE, editor. The behaviour of domestic animals. Baltimore: The Williams and Wilkins Co,1975:306-307.