Department of Veterinary Public Health and Preventive Medicine, Nigeria.
Department of Veterinary Public Health and Preventive Medicine, Nigeria.
Prev Vet Med. 2021 Sep;194:105442. doi: 10.1016/j.prevetmed.2021.105442. Epub 2021 Jul 23.
Peri-urban dairy farming is an emerging industry in sub-Saharan Africa that risks being undermined by diseases like bovine mastitis (BM) if farmers do not implement appropriate management programmes. However, little is currently known about farmer perceptions and practices towards BM due to challenges with accessing these herds for research. In this study, 49 intensive and 53 extensive peri-urban dairy farmers having ≥10 milking cows in Kaduna and Zaria metropolises, North-Western Nigeria were recruited through snowball sampling and on-farm interviews were conducted to collect information on herd demographics, milking procedures, and mastitis management. Descriptive statistics were provided for all study variables and statistical comparisons were made between intensive and extensive herds. The mean herd size was 33 milking cows (range: 11-62). A greater proportion of extensive herds contained only indigenous breeds of cattle (36/53; 68 %) compared with intensive herds (6/49; 12 %). Hand milking was the most common milking method across both herd types (93/102; 92 %). Intensive herds had better hand washing and udder cleaning practices, but there was no statistical difference between management systems with regards to floor, udder, and tail cleanliness. Only a small number of farms performed on-farm diagnosis of BM via strip cup test (4/102; 4%) or rapid mastitis test (3/102; 3%). Treatment of clinical mastitis was typically by intramuscular antibiotic injection (71/102; 70 %) or topically applied herbal preparations (14/102; 14 %). Dry cow intramammary therapy was only used by 6/46 intensive farms (13 %) and 1/53 extensive farms (2%). Most extensive herds (40/53; 76 %) reported milking cows with clinical mastitis after apparently healthy cows, however this practice was less common among intensive herds (5/49; 10 %). Extensive herds were less likely to request veterinary assistance for mastitis than intensive herds (17/53; 32 % versus 28/49; 57 %) and had higher perceived costs for treating BM cases. Intensive farmers reportedly received higher prices for milk than extensive farmers and perceived that BM was causing significantly more production losses in their herds. Only a small number of farmers (20/102; 20 %) kept mastitis treatment records for their herds. Overall, the study findings indicate that peri-urban dairy farmers may be lacking in awareness of BM impacts and access to basic resources to implement good practices such as hand washing between milking cows and antibiotic intramammary infusions.
城郊奶牛养殖是撒哈拉以南非洲的一个新兴产业,如果农民不实施适当的管理计划,这种产业可能会因牛乳腺炎(BM)等疾病而受到破坏。然而,由于难以接触这些牛群进行研究,目前对农民对 BM 的看法和做法知之甚少。在这项研究中,通过滚雪球抽样法招募了来自尼日利亚西北部卡杜纳和扎里亚大都市的 49 名集约型和 53 名粗放型城郊奶牛养殖户,他们拥有≥10 头奶牛,并在农场进行了访谈,以收集有关牛群人口统计学、挤奶程序和乳腺炎管理的信息。对所有研究变量都提供了描述性统计数据,并对集约型和粗放型牛群进行了统计比较。平均牛群规模为 33 头奶牛(范围:11-62)。与集约型牛群(6/49;12%)相比,更多的粗放型牛群仅含有本地品种的牛(36/53;68%)。两种牛群类型中最常见的挤奶方法都是手工挤奶(93/102;92%)。集约型牛群在洗手和擦洗乳房方面有更好的做法,但在管理系统方面,它们在地板、乳房和尾巴清洁方面没有统计学差异。只有少数农场通过杯测法(4/102;4%)或快速乳腺炎检测法(3/102;3%)对牛乳腺炎进行了农场诊断。对临床乳腺炎的治疗通常是通过肌肉内注射抗生素(71/102;70%)或局部应用草药制剂(14/102;14%)。只有 6/46 家集约型农场(13%)和 1/53 家粗放型农场(2%)使用了干奶牛乳房内治疗。大多数粗放型牛群(40/53;76%)在看似健康的奶牛后报告挤奶牛患有临床乳腺炎,但这种做法在集约型牛群中较少见(5/49;10%)。与集约型牛群相比,粗放型牛群不太可能寻求兽医协助治疗乳腺炎(17/53;32%对 28/49;57%),并且治疗乳腺炎病例的感知成本更高。集约型农民报告说他们的牛奶价格高于粗放型农民,并且认为乳腺炎在他们的牛群中造成了更大的生产损失。只有少数农民(20/102;20%)为他们的牛群保留了乳腺炎治疗记录。总体而言,研究结果表明,城郊奶牛养殖户可能对乳腺炎的影响和获得实施良好做法(如在挤奶牛之间洗手和使用抗生素乳房内注射)的基本资源认识不足。