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Converting multi-trait breeding objectives into operative selection indexes to ensure genetic gains in low-input sheep and goat breeding programmes
Small ruminant breeding programmes in low-input production systems are best organised at the community level. Participant farmers have to agree on goal traits and their relative importance. When BLUP breeding values of ...
Field synchronization of Ethiopian Highland sheep for fixed time artificial insemination: improvement of conception rate with a double injection of prostaglandin at 11 days
The study investigated, for fixed time artificially inseminated (AI) Menz ewes in field trials, the reproductive
performance of prostaglandin-based treatments simultaneously to the standard ‘P4+eCG’ protocol. A total
of ...
Risk Factors for Reproductive Disorders and Major Infectious Causes of Abortion in Sheep in the Highlands of Ethiopia
Community-based sheep breeding programs (CBBPs) were established in Ethiopia since 2010. Improved rams from CBBPs need to be disseminated. However, there is a risk of transmitting reproductive diseases to other community ...
Optimizing breeding structures and related management in community-based goat breeding programs in the Borana pastoral system of Ethiopia
The study simulated different potential breeding programs to design the optimal breeding structure and operational management structure for Borana goat. It evaluated different scenarios using ZPLAN+ software to maximize ...
Genetic and non-genetic effect on fertility trait of different ram breeds reared in the highland of North-Shewa, Ethiopia
The aim was to investigate genetic and non-genetic factors influencing fertility of rams. The fertility study encompassed 155 rams of different breed mated to 14,357 ewes over several years, seasons, locations and genotypes. ...
Increased number of large non-atretic follicles and codominance effects account for high litter sizes in Bonga sheep
To understand the ovarian basis for prolificacy of Bonga sheep, a total of 31 ewes were selected based on litter size (LS) records and divided into two groups: High Prolificacy (HP) (n = 20) with LS ≥ 2 and Low Prolificacy ...
Community‐based breeding programmes are a viable solution for Ethiopian small ruminant genetic improvement but require public and private investments
Ethiopia has a large and diverse population of small ruminants, which contribute
substantially to the livelihood and income of the rural poor and the country at large.
However, the sector faces a number of challenges. ...
The efficiency of estrus synchronization protocols and artificial insemination in the Abergelle goat on-station and on-farm conditions of Northern Ethiopia
This study was conducted to investigate the effect of different estrus synchronization protocols followed by artificial insemination on estrus response and the conception rate of Abergelle goats. Three estrus synchronization ...
Genome‑wide scans identify known and novel regions associated with prolifcacy and reproduction traits in a sub‑Saharan African indigenous sheep (Ovis aries)
Maximizing the number of ofspring born per female is a key functionality trait in commercial- and/or subsistence-oriented
livestock enterprises. Although the number of ofspring born is closely associated with female fertility ...
Community-based sheep breeding programs generated substantial genetic gains and socioeconomic benefits
Community-based breeding programs (CBBPs) for small ruminants have been suggested as alternatives to centralised, government-controlled breeding schemes which have been implemented in many developing countries. An innovative ...