Al-Merestani M R, Zarkawi M, Wardeh M F
Department of Animal Production, Faculty of Agriculture, University of Damascus, Damascus, Syria.
Reprod Domest Anim. 2003 Feb;38(1):36-40. doi: 10.1046/j.1439-0531.2003.00394.x.
Seventy-five female Damascus goats aged between 1.5 and 5.5 years were used to evaluate the effectiveness of the intravaginal sponges and prostaglandin analogue on oestrous synchronization and fecundity; to diagnose pregnancy and to monitor the resumption of the luteal activity. Females were divided randomly, during the breeding season, into three equal groups, S, P and C. Females in group S were fitted with sponges containing 45 mg of flugestone acetate (FGA) for 14 days and injected with pregnant mare serum gonadotrophin (PMSG) at the sponge withdrawal. Females in group P were given two injections of prostaglandin F2alpha analogue at 11-day intervals, whereas females in group C (control) received no treatment. The results showed that there was a significant difference (p < 0.001) in oestrous exhibition between females in group S as compared with those in groups P and C, with means being 30 +/- 10, 172 +/- 115 and 217 +/- 75 h for groups S, P and C, respectively. Kidding rates resulting from the first and all matings were 80 and 88, 52 and 88, and 68 and 80% for groups S, P and C, respectively. Fecundity rates were 215, 175 and 180% for groups S, P and C, respectively, with a significant difference (p < 0.05) between the S and both P and C groups. Using an ultrasound pregnancy detector performed on days 57 +/- 3 after mating, positive pregnancy diagnosis was 93.3% and 100% for non-pregnancy. Females in the control group showed functional corpus luteum starting in September. It is concluded that FGA sponges plus PMSG treatment could be successfully used to synchronize oestrus and improve fecundity; whereas prostaglandin treatment was not effective to synchronize oestrus. It is also concluded that pregnancy can be diagnosed accurately and successfully using an ultrasound pregnancy detector. In addition, ovarian activity in the Damascus goat in Syria resumes in September.
选用75只年龄在1.5至5.5岁之间的雌性大马士革山羊，以评估阴道海绵栓和前列腺素类似物对发情同步化和繁殖力的效果；诊断妊娠情况并监测黄体活动的恢复。在繁殖季节，将雌性山羊随机分为三组，即S组、P组和C组（对照组）。S组的雌性山羊放置含45毫克醋酸氟孕酮（FGA）的海绵栓14天，并在取出海绵栓时注射孕马血清促性腺激素（PMSG）。P组的雌性山羊每隔11天注射两次前列腺素F2α类似物，而C组（对照组）的雌性山羊不接受任何处理。结果显示，S组雌性山羊的发情表现与P组和C组相比存在显著差异（p < 0.001），S组、P组和C组的发情持续时间均值分别为30±10小时、172±115小时和217±75小时。S组、P组和C组首次交配和所有交配后的产羔率分别为80%和88%、52%和88%、68%和80%。S组、P组和C组的繁殖率分别为215%、175%和180%，S组与P组和C组之间存在显著差异（p < 0.05）。在交配后57±3天使用超声妊娠检测仪进行检测，妊娠阳性诊断率为93.3%，未妊娠诊断率为100%。对照组的雌性山羊从9月开始出现功能性黄体。结论是，FGA海绵栓加PMSG处理可成功用于同步发情并提高繁殖力；而前列腺素处理对同步发情无效。还得出结论，使用超声妊娠检测仪可准确且成功地诊断妊娠。此外，叙利亚大马士革山羊的卵巢活动在9月恢复。
