Hounzangbe-Adote M S, Meyer C
Faculté des sciences agronomiques, Université nationale du Bénin, Cotonou.
Rev Elev Med Vet Pays Trop. 1996;49(2):150-6.
Three groups of 14 Djallonke ewes each have been compared: group E received one antiparasitic treatment with Ivermectin, or Valbazen and Amprol at lambing, group T2 received three classical antiparasitic treatments with the same drugs according to the seasons (at the beginning and at the end of the long rainy season, and at the end of the short rainy season) group T1 remained untreated. The onset of sexual activity occurred 71.5 +/- 5.4 days (lot E), 74.5 +/- 6.3 (lot T2) and 104.3 +/- 10.3 (lot T1) after lambing. So, intervals between lambings were 255.7 +/- 11.8 (lot E), 245.9 +/- 13.5 (lot T2) and 298.2 +/- 24 (lot T1). Lambing other characteristics were almost the same in the three groups: prolificacy 127-137%, weight at birth 1.2-1.4 kg, daily weight gains (0-90 days) 99-114 g and mortality 39-48%. It seems economically more profitable to treat against internal parasites once at lambing rather than three times a year according to the seasons.
对三组各14只贾隆克母羊进行了比较：E组在产羔时用伊维菌素或瓦尔巴赞和安普罗进行一次抗寄生虫治疗；T2组根据季节（在长雨季开始和结束时以及短雨季结束时）用相同药物进行三次传统抗寄生虫治疗；T1组不进行治疗。产羔后，E组母羊性活动开始时间为71.5±5.4天，T2组为74.5±6.3天，T1组为104.3±10.3天。因此，产羔间隔时间E组为255.7±11.8天，T2组为245.9±13.5天，T1组为298.2±24天。三组母羊的其他产羔特征几乎相同：繁殖力为127 - 137%，出生体重为1.2 - 1.4千克，（0 - 90天）日增重为99 - 114克，死亡率为39 - 48%。在产羔时进行一次体内寄生虫治疗似乎比每年按季节进行三次治疗在经济上更有利可图。
