肯尼亚南部牧场辅助生殖技术受益者优先使用Sahiwal公牛犊牛

F. Agutu, S. Mbuku, J. Ondiek, B. Bebe
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摘要

公牛授精是牧区放牧中最常用的授精方式。为了加速高质量Sahiwal基因在畜牧社区的繁殖、传播和获取,发展机构在肯尼亚牧场推广了辅助生殖技术(ARTs)的使用。然而,抗逆转录病毒技术的可持续利用是不确定的,因为牧群所有者高度重视具有高遗传优点的小公牛的育种价值,这是采用技术的潜在障碍。本研究评估了在肯尼亚南部牧场利用ovsync和TAI协议的Sahiwal牛升级育种计划的受益者中优先使用ART-公牛犊牛的情况。在选择试验中,根据犊牛潜在利用的相关属性对犊牛的优先利用进行了评价。总体而言,与立即出售以获取收入(44%)相比,首选偏好是保留公牛犊牛以供未来繁殖(54%)。这是牧民和农牧牧民的首选,不像牧场主更喜欢出售公牛犊牛以获得收入,而不是保留犊牛以供未来繁殖(80%对20%)。与男性受访者相比,女性更倾向于保留公牛犊牛以供未来繁殖(59%对51%)。第二选择的偏好是销售收入(58%)、育种(29%)、畜力(5%)、肉类生产和文化实践(各3%)和声望(2%)。社会经济因素对ARTs公牛犊牛的优先利用无显著影响。结果表明,高遗传价值的小公牛更适合繁殖,这意味着小公牛将被保留在牧群中为公牛服务。这可能是在牧群中采用抗逆转录病毒技术以提高Sahiwal牛品种的障碍。政策方向需要在Sahiwal繁殖和向牧民和农牧民分配公牛小牛方面进行投资。牧场主对保留公牛犊牛进行繁殖的偏好较低,因此最好能使他们有能力投资art以繁殖繁殖公牛并供应给牧民和农牧民。
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Preferential Use of Sahiwal Bull Calves by Beneficiaries of Assisted Reproductive Technologies in Southern Rangelands of Kenya
Bull service is the most common insemination method in pastoral herds grazing in the rangelands. To accelerate multiplication and distribution of and access to high quality Sahiwal genetics to pastoral communities, development agencies have promoted the use of Assisted Reproductive Technologies (ARTs) in the Kenyan rangelands. However, sustainable use of ARTs is uncertain because pastoral herd owners attach high value to bull calves of high genetic merits for breeding, which is a potential barrier to technology adoption. This study assessed preferential use of ART- bull calves among beneficiaries of the Sahiwal cattle upgrading breeding program that were utilizing OvSynch and TAI protocol in the southern rangelands of Kenya. Preferential use of bull calves was assessed in a choice experiment basing on attributes associated with potential use of bull calves. Overall, the first-choice preference was to retain the bull calves for future breeding (54%) compared to immediate selling for income (44%). This was the first-choice of pastoralists and agro pastoralists preferred unlike ranchers who preferred selling bull calves for income compared to retaining for future breeding (80% versus 20%). The preference of retaining bull calves for future breeding was higher among women compared to male respondents (59% versus 51%). Second choice preferences were sales for income (58%), breeding (29%), draft power (5%), meat production and cultural practices (3% each) and prestige (2%). Socioeconomic factors had no significant influence on preferential use of ARTs bull calves. The results indicate that high genetic merit bull calves are preferred for breeding, implying that bull calves would be retained within the pastoral herds for bull service. This presents a possible barrier to adoption of ARTs in pastoral herds for upgrading of Sahiwal cattle breed. Policy direction need to invest in Sahiwal multiplication and distribution of bull calves to pastoralists and agro pastoralists. Ranchers have low preference for retaining bull calves for breeding, so it would be best to capacitate them to invest in ARTs to multiply breeding bulls and supply to pastoralists and agro pastoralists.
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