Hamid Muhammed, Abduraman Sadam, Tadesse Belege
Samara University, College of Veterinary Medicine, PO. Box. 132, Samara, Ethiopia.
Wollo University, School of Veterinary Medicine, PO. Box 1145, Dessie, Ethiopia.
Vet Med Int. 2021 May 21;2021:6622487. doi: 10.1155/2021/6622487. eCollection 2021.
A cross-sectional study was conducted from November 2019 to May 2020 in and around Haramaya Town to study the risk factors of artificial insemination (AI) in dairy cattle and evaluate the economic impact of failure of first service AI. A questionnaire survey and field follow-up were employed for collecting data from cattle owners and artificial insemination technicians (AITs) who were selected purposively. Out of the 221 inseminated cows and heifers, the overall conception rate was 60.2% ( = 133). The conception rate was statistically different between breed (=0.019) and insemination time (=0.049). From a total of 133 conceived cows and heifers, the conception rate was 68 (53.54%) in local breeds and 65 (69.15%) in cross breeds. Parity, age of cows, inseminator experience, and body condition of cows did not create a significant difference in conception rate ( > 0.05). Failure to conceive at their first AI results in an extra cost of 440 ETB per day until conception. Therefore, to increase the conception rate, dairy cows should be inseminated early when they show signs of estrous; the owners of dairy cows should be trained on how to detect estrous signs in dairy cows and AI technicians should also take training in order to improve their skills.
2019年11月至2020年5月,在哈拉马亚镇及其周边地区开展了一项横断面研究,以探究奶牛人工授精(AI)的风险因素,并评估首次人工授精失败的经济影响。通过问卷调查和实地随访,从有目的地挑选出的奶牛养殖户和人工授精技术人员(AITs)那里收集数据。在221头接受人工授精的奶牛和小母牛中,总体受胎率为60.2%(n = 133)。不同品种(P = 0.019)和授精时间(P = 0.049)的受胎率在统计学上存在差异。在总共133头受孕的奶牛和小母牛中,本地品种的受胎率为68头(53.54%),杂交品种为65头(69.15%)。胎次、奶牛年龄、输精员经验和奶牛体况在受胎率方面未产生显著差异(P>0.05)。首次人工授精未受孕会导致直至受孕前每天额外花费440埃塞俄比亚比尔。因此,为提高受胎率,应在奶牛出现发情迹象时尽早进行人工授精;应对奶牛养殖户进行培训,使其掌握如何检测奶牛的发情迹象,人工授精技术人员也应接受培训以提高技能。