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Articles by Mengistie Taye
Total Records ( 4 ) for Mengistie Taye
  Mengistie Taye , Belay Deribe and Mussie H. Melekot
  A study was conducted in the sub humid parts of Sekota District, Amhara Regional State, Ethiopia, to evaluate the reproductive performance of Central Highland goat types raised under the traditional management system of farm households. Twenty-two randomly selected flocks were monitored for two years during which reproductive data were collected on 524 does. The mean least squares Age at first kidding, litter size, kidding interval and kidding rate was found to be 407.9 days, 1.16±0.04 kids, 1.46±0.03, and 307.9 days, respectively. Age at first kidding was affected (p<0.01) by season of birth that does born during the hot season had short age at first kidding. Kidding interval was shorter (p<0.01) for does that kidded during cool season and single litter. Litter size was also affected (p<0.01) by parity and season of kidding. Does kidded in the hot season and those with higher parities had larger litter. The effect of type of birth and season of kidding on annual reproductive rate was significant that multiple bearing does and those kidded in the hot season had larger reproductive rate. The effect of season on most of the traits indicates the need for supplementation of does during the dry season when the grazing condition is very poor for better reproductive efficiency.
  Mengistie Taye , Girma Abebe , Sisay Lemma , Solomon Gizaw , Abebe Mekoya and Markos Tibbo
  On-farm data were collected to evaluate reproductive performance and survival of Washera sheep raised under traditional smallholder production systems in the North-Western highlands of the Amhara National Regional State, Ethiopia. The data were from flocks of 110 households from October, 2004 to September, 2007. Mean age and weight at first lambing were 464.2±14.0 days and 24.7±0.5 kg, respectively. None of the fixed effects considered affected age at first lambing although, weight at first lambing was affected (p<0.05) by district and parity. Ewes from primiparous ewes and from Quarit district had heavier weight at their first lambing. Lambing interval (269±6.2 days) was affected by district, lambing season, parity and birth type. The average number of lambs per ewe lambing was 1.19±0.02 and varied (p<0.0001) with lambing year and postpartum ewe body weight. Mean postpartum ewe body weight was 31.0±0.2 kg and influenced (p<0.01) by district, year, season, parity and type of birth. Cumulative survival from birth to 30, 90, 180, 270 and 365 days was 98.4±0.6, 93.6±0.9, 91.2±1.1, 90.0±1.2 and 89.9±1.2 days, respectively. Except at the age of 30 days, district, season, birth type and birth weight affected (p<0.05) survival. No interactions between any fixed effects were significant and thus were removed from the model. Postpartum ewe body weight as a covariate did not affect litter size. The higher survival rate indicates that the area is of low disease load and the farmers practice to decrease lamb mortality need to be encouraged and improved. The influence of different fixed effects on reproductive performances indicated that through different management and breeding practices it is possible to increase the productivity of these breed of sheep.
  Belay Deribe and Mengistie Taye
  The study was conducted at Abergele in the semi arid parts of Sekota district to evaluate growth performance of Abergele goats managed under traditional management systems. Data on growth and growth rates were collected from 724 kids for two years. The least squares mean birth, three months, six months and yearling weight of kids obtained were 1.91±0.04, 6.84±0.19, 9.13±0.31 and 16.42±1.20 kg, respectively. Parity of doe and birth type of kid significantly affected birth weight and three months weight while sex of kid and season of birth of kid affected birth, three months, six months and yearling weight consistently. Kids from first parity does were lighter at birth, three months and six months of age than kids from higher parity does. Twin born kids were lower in weight at birth and three months of ages than their single born counterparts. Female kids and kids born during the dry season had lower weight at all ages considered. The least squares mean pre-weaning and post-weaning growth rates obtained were 53.4±2.30 and 29.3±4.32 g day-1, respectively. Parity of doe, type of birth and season birth of kid affected pre-weaning growth rate. Kids from first parity does, twin born kids and kids born during the dry season had lower growth rate. The significant effect of fixed factors needs to be considered in an effort to improve productivity of goats in the study areas.
  Surafel Melaku , Zeleke Mekuriaw , Solomon Gizaw and Mengistie Taye
  This study was aimed at characterizing Simien sheep based on growth characteristics and farmers’ breeding objectives and selection criteria. A total of 63 households and 600 lambs from Miligebsa and Dara districts of Debark and Dabat woredas of North Gondar Zone in Amhara region, Ethiopia were registered and monitored. About 1 year and 5 months monitoring data on growth performance of the sheep was used for the study. Besides, group discussion and proportional piling tools of PRA were used to identify and prioritize farmers’ breeding objectives and selection criteria. The overall least square mean birth weight of Simien sheep was 2.976±0.030 kg. The overall least square mean weights of Simien sheep at 3 and 6 months of age were 11.761±0.161 and 15.787±0.330 kg, respectively. The overall average daily gain in g/day between 0-90 days of age was found to be 97.364±1.735; birth to 6 months of age was 72.089±1.729 and weaning to 6 months of age was 52.843±4.662. Parity was significant (p<0.05) source of variation on body weight measurements. Birth type affected only birth weight and weaning weight. Body weight gains at early age were significantly affected by district, parity and birth type. Sex showed no significant effect (p>0.05) on most of weight traits of Simien sheep except on 6 months weight and ADG between birth to 6 months. The leading farmers’ breeding objective was as source of cash income. Family performance took the 1st rank to select breeding rams and wider back area (shint) was considered as the most important criteria for selecting breeding ewes. The facts that the breed is superior to most of the sheep breeds in the country in terms of weight at early age and declines at later age signify that the sheep has good potential but there are influences by management and environmental factors. Thus, improvement of the general management condition can support the breed to express its full genetic potentials consistently at later stages of its growth. Further study on the reproductive performance of the sheep is suggested to investigate more details about the breed. Since, there exists high variations in body weight measurements at different ages within the breed, improvement by selection can be considered as good breeding strategy for Simien sheep.
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