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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 1992;5(2): 275-278.
DOI: https://doi.org/10.5713/ajas.1992.275    Published online June 1, 1992.
Pregnancy rates in Philippine Swamp buffaloes (Carabaos) following clitoral stimulation during timed inseminations
S. S. Capitan, V. G. Momongan, A. R. Obsioma, A. N. del Barrio
Abstract
One hundred sixty three (163) animals were used in 2 횞 2 and 3 횞 2 factorial experiment in randomized complete block design (RCBD) to determine the effect of clitoral stimulation during timed inseminations on the fertility of Philippine swamp buffaloes (carabaos). There were 3 separate trials conducted with two treatment groups per trial : control and with 30 second clitoral stimulation after each insemination. Parity, tone of uterus and site of semen deposition were also used as criteria in subdividing the main groups. The pregnancy rates of animals that received clitoral stimulation were significantly (p<0.05 or p<0.01) higher than those of control for both caraheifers (52.98 vs 31.41%) and caracows (52.68 vs 27.07%) ; under all uterine conditions : tone 1 (53.33 vs 31.75%), tone 2 (35.83 vs 22.82%) and tone 3 (75.65 vs 42.44%) ; and in both site of semen placement, cervix (43.99 vs 22.85%) and uterus (60.92% vs 37.81%). Fertility was also significantly (p<0.05) higher when semen was deposited in the uterus (49.37%) than in the cervix (33.42%). Interaction effect was insignificant. Clitoral stimulation should be utilized as a routine procedure following artificial insemination in carabaos.
Keywords: Pregnancy Rate; Fertility; Clitoral Stimulation; Heat Synchronized Carabaos
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