Abstract
AbstractSheep are important for food and livelihood security in sub-Saharan Africa, and maximizing lamb weight gain while minimizing mortality is essential to improve production. Using the Menz sheep breeding villages of Amhara region in Ethiopia as a case study, the weight gain and mortality rate of 208 lambs were monitored during their first 5 months of life. The study was conducted in intervention and control villages, where the intervention villages were part of community-based breeding programmes and had participated in various projects aiming to improve sheep production and management. Multivariable linear regression analysis was conducted to detect associations between weight gain from birth to 1 month, and birth to 5 months, and different lamb and ewe characteristics, farmer education, application of management routines, and presence of village level sheep management interventions. In general, lambs from intervention villages, without certain signs of diseases, whose mothers were 2 years or older, had a body condition score of more than 2 on a 5-point scale, and who originated from flocks where disease prevention strategies had been implemented, had gained more weight. Overall lamb mortality was 6.8% with most deaths occurring before 1 month of age. This study highlights that health interventions in ewes improve lamb survival and weight gain and that the care of lambs during the first month of life is crucial for overall herd productivity.
Funder
CGIAR Trust Fund
Swedish University of Agricultural Sciences
Publisher
Springer Science and Business Media LLC
Subject
Animal Science and Zoology,Food Animals
Reference41 articles.
1. Abebe, A. et al., 2020. Selection efficiency for growth performance of Menz sheep in a community-based breeding program, Livestock Research for Rural Development, 32,
2. Agenbag, B. et al., 2021. Lambs need colostrum: A review, Livestock Science, 251, 104624
3. Aktaş, A. et al., 2015. Effects of ewe live weight and age on reproductive performance, lamb growth, and survival in Central Anatolian Merino sheep, Archives Animal Breeding, 58, 451-459
4. Alemu, M.M., and Bawoke, G.T., 2020. Analysis of spatial variability and temporal trends of rainfall in Amhara region, Ethiopia, Journal of Water and Climate Change, 11, 1505-1520
5. Armson, B. et al., 2020. Small ruminant production in Tanzania, Uganda, and Ethiopia: a systematic review of constraints and potential solutions, Veterinary Sciences, 8, 5