Makun H J, Abdulganiyu K A, Shaibu S, Otaru S M, Okubanjo O O, Kudi C A, Notter D R
Small Ruminant Research Programme, National Animal Production Research Institute, Ahmadu Bello University, Zaria, Nigeria.
Department of Veterinary Parasitology and Entomology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
Trop Anim Health Prod. 2020 Jan;52(1):79-87. doi: 10.1007/s11250-019-01987-y. Epub 2019 Jul 16.
Two studies at the National Animal Production Research Institute (NAPRI), Zaria, Nigeria, compared Red Sokoto (RS), Sahelian (SG), and West African Dwarf (WAD) goats after experimental or natural infection with Haemonchus contortus. In the first study, 20 RS, 17 SG, and 14 WAD kids were challenged at 6 months of age with 5000 L larvae of H. contortus. Fecal egg counts (FEC), packed cell volumes (PCV), and body weights (BW) were recorded 0, 28, 35, and 42 days after infection. The FEC and PCV were affected only by time of measurement. In the second study, 322 RS and 97 SG kids were produced at NAPRI over 3 years, weaned at 4 to 6 months of age, dewormed, returned to contaminated pastures, and evaluated 28 and 35 days later. Effects of breed, year, breed × time interaction, and breed × year interaction were observed for PCV and BW; FEC was only affected by time of measurement, year and breed × year interaction. The FEC were larger and PCV were smaller on day 35 compared to day 28 and in year 2 compared to years 1 and 3. The SG kids were notably smaller than RS kids in year 2, with higher FEC and lower PCV, but FEC were larger for RS kids in years 1 and 3. Differences in parasite resistance among these Nigerian goat breeds were therefore small and likely reflected underlying differences in growth, development, and disease history.
尼日利亚扎里亚国家动物生产研究所（NAPRI）的两项研究，比较了红索科托（RS）、萨赫勒（SG）和西非矮种（WAD）山羊在经实验性或自然感染捻转血矛线虫后的情况。在第一项研究中，20只RS、17只SG和14只WAD幼羊在6月龄时用5000条捻转血矛线虫的L3期幼虫进行攻毒。在感染后0、28、35和42天记录粪便虫卵计数（FEC）、红细胞压积（PCV）和体重（BW）。FEC和PCV仅受测量时间的影响。在第二项研究中，NAPRI在3年时间里繁育了322只RS和97只SG幼羊，在4至6月龄断奶，进行驱虫，放回受污染的牧场，并在28天和35天后进行评估。观察到品种、年份、品种×时间交互作用以及品种×年份交互作用对PCV和BW有影响；FEC仅受测量时间、年份以及品种×年份交互作用的影响。与第28天相比，第35天的FEC更高，PCV更低；与第1年和第3年相比，第2年的情况也是如此。在第2年，SG幼羊明显比RS幼羊小，FEC更高，PCV更低，但在第1年和第3年，RS幼羊的FEC更高。因此，这些尼日利亚山羊品种之间的寄生虫抗性差异很小，可能反映了生长、发育和疾病史方面的潜在差异。
