Desta Gebremichael - Academia.edu (original) (raw)
Papers by Desta Gebremichael
The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of bree... more The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of breeding practices and evaluation of estrus synchronization of dairy cattle. The study of the survey covered 180 households found in per-urban and rural areas of Ahferom, Adwa and Laelay michew district which included 113 in rural areas and 67 in per-urban areas of the districts. The Information was collected from secondary data, group discussion, AI technician, household level survey questionnaire, farm visit and personal observations. Seven hundred one synchronized cows were selected form record of artificial insemination centre and evaluated for conception rate and number of service per conception. For experimental study a total of 126 dairy cattle 42 cows from each district were selected for PGF2α treatment. Single shot of PGF2 were given for dairy cattle that exhibited estrus after first injection and double shot has given to cows that failed to show heat after single injection. Twenty conceived lactating cows were used for progesterone profile assay using hormonost micro lab farmers test to check pregnancy and embryo mortality. The data were analyzed using SPSS (16) and SAS (9.1). Dairy cattle were kept for generating income (35.6%), milk consumption (32.2%) and milk consumption and breeding (16.1%) in the study area. Purchased dairy cattle (69.9% and 68.7%) were the main foundation stock followed by own (20.35% and 17.91%) in rural and per-urban areas respectively. Mating system in the study area were AI (42.8%), AI with estrus synchronization (22.2%) and natural mating (35%). Households obtained breeding bull from neighboring (61.4%), own (21.3%) and village (17.3%). Individual performance and pedigree selection were used as selection criteria for dairy cattle. Trait preference of farmers were milk yield (1 st) body weight (2 nd)) and fertility (3 rd) for both rural and per-urban areas. Production system significantly affected daily milk yield of local cattle and cross dairy cattle. In the study area AFC (3.9± 0.8, 3.0± 0.9) years, CI (1.7± 0.4, 1.3 ±0.5) years and DO (10.9 ±0.5, 6.9± 0.62) months were for local and cross cattle respectively. Overall CR and NSC of mass synchronization were 37.95% and 2.63 respectively. BCS, bull and AI technician significantly affected CR and NSC in mass synchronization. From single injection in the experimental study 84.9% cows responded to PGF2α and 51.4% of them were conceived. 89.5% Cows show estrus sign and 52.9% conceived with double injection. Among 20 cows assumed to be pregnant on basis of milk progesterone concentration on day 18-24 post insemination, 85% were confirmed to be pregnant and 15% showed late embryonic death. Community based breeding program is the best option to improve dairy breeding practice in the study area. Improvements in facilities and management should be necessary before implementing an estrous synchronization program. Giving second injection for cows not responded for first injection of PGF2α has complimentary advantage to single injection. Progesterone assay using hormonost micro lab farmers test is a practical solution for dairy farmers to detect estrus, pregnancy and embryo mortality.
The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of bree... more The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of breeding practices and evaluation of estrus synchronization of dairy cattle. The study of the survey covered 180 households found in per-urban and rural areas of Ahferom, Adwa and Laelay michew district which included 113 in rural areas and 67 in per-urban areas of the districts. The Information was collected from secondary data, group discussion, AI technician, household level survey questionnaire, farm visit and personal observations. Seven hundred one synchronized cows were selected form record of artificial insemination centre and evaluated for conception rate and number of service per conception. For experimental study a total of 126 dairy cattle 42 cows from each district were selected for PGF2α treatment. Single shot of PGF2 were given for dairy cattle that exhibited estrus after first injection and double shot has given to cows that failed to show heat after single injection. Twenty conceived lactating cows were used for progesterone profile assay using hormonost micro lab farmers test to check pregnancy and embryo mortality. The data were analyzed using SPSS (16) and SAS (9.1). Dairy cattle were kept for generating income (35.6%), milk consumption (32.2%) and milk consumption and breeding (16.1%) in the study area. Purchased dairy cattle (69.9% and 68.7%) were the main foundation stock followed by own (20.35% and 17.91%) in rural and per-urban areas respectively. Mating system in the study area were AI (42.8%), AI with estrus synchronization (22.2%) and natural mating (35%). Households obtained breeding bull from neighboring (61.4%), own (21.3%) and village (17.3%). Individual performance and pedigree selection were used as selection criteria for dairy cattle. Trait preference of farmers were milk yield (1 st) body weight (2 nd)) and fertility (3 rd) for both rural and per-urban areas. Production system significantly affected daily milk yield of local cattle and cross dairy cattle. In the study area AFC (3.9± 0.8, 3.0± 0.9) years, CI (1.7± 0.4, 1.3 ±0.5) years and DO (10.9 ±0.5, 6.9± 0.62) months were for local and cross cattle respectively. Overall CR and NSC of mass synchronization were 37.95% and 2.63 respectively. BCS, bull and AI technician significantly affected CR and NSC in mass synchronization. From single injection in the experimental study 84.9% cows responded to PGF2α and 51.4% of them were conceived. 89.5% Cows show estrus sign and 52.9% conceived with double injection. Among 20 cows assumed to be pregnant on basis of milk progesterone concentration on day 18-24 post insemination, 85% were confirmed to be pregnant and 15% showed late embryonic death. Community based breeding program is the best option to improve dairy breeding practice in the study area. Improvements in facilities and management should be necessary before implementing an estrous synchronization program. Giving second injection for cows not responded for first injection of PGF2α has complimentary advantage to single injection. Progesterone assay using hormonost micro lab farmers test is a practical solution for dairy farmers to detect estrus, pregnancy and embryo mortality.
Tropical forest issues, Mar 18, 2024
Through homestead agroforestry, households can meet their energy needs, enhance food production, ... more Through homestead agroforestry, households can meet their energy needs, enhance food production, generate cash income, produce animal feed, and enhance agrobiodiversity, thereby improving their livelihoods.
Book of abstracts, 2006
author={Nyssen, Jan and Poesen, Jean and MITIKU, H and DECKERS, J and MOEYERSONS, J and HAREGEWEY... more author={Nyssen, Jan and Poesen, Jean and MITIKU, H and DECKERS, J and MOEYERSONS, J and HAREGEWEYN, NIGUSSIE and DESCHEEMAEKER, K and GOVERS, G and GEBREMICHAEL, DESTA and NAUDTS, J and VERSTRAETEN, G and VANCAMPENHOUT, K},
... Authors: Nyssen, Jan Dewit, J Moeyersons, J Haregeweyn, Nigussie Naudts, J Amanuel, Zenebe Mi... more ... Authors: Nyssen, Jan Dewit, J Moeyersons, J Haregeweyn, Nigussie Naudts, J Amanuel, Zenebe Mitiku, Haile Bedru, Babulo Aerts, Raf Fredu, Nega Tesfamichael, Yohannes Tsehaye, Asmelash Desta, Gebremichael Poesen, Jean Deckers, Jozef A. Mintesinot, Behailu. ...
Soil Use and Management, Sep 1, 2005
Use of stone bunds to enhance soil and water conservation was first introduced to Tigray, norther... more Use of stone bunds to enhance soil and water conservation was first introduced to Tigray, northern Ethiopia in 1981. This study was designed to examine the factors that control the effectiveness of bunds installed on cropland. Qualitative and quantitative assessments of soil loss and sediment accumulation were conducted on 202 plots at 12 representative sites in Dogu'a Tembien district. Mean annual soil loss from the foot of the bunds due to tillage erosion was estimated at 39kgm-'yr-' or 20tha-'yr-', a rate which decreased with increasing age of bund. The assessed mean annual soil loss rate by sheet and rill erosion in the absence of stone bunds is 57 t ha-' yr-'. The mean measured annual rate of sediment accumulation behind the stone bunds is 119 kg m-' yr-' or 59 t ha-' yr-'. The measurements show that the introduction of stone bunds to the region has led to a 68Yo reduction in annual soil loss due to water erosion. This reduction is due to the accumulation of sediment behind the stone bunds, which occurs faster in the early years after construction and decreases as the depression behind the bunds becomes filled with sediment. New stone bunds are particularly effective in trapping sediment in transport, but regular maintenance and increase in height of the bunds is necessary to maintain their effectiveness. The average USLE P factor for stone bunds in the study area is estimated to be 0.32.
Soil & Tillage Research, Nov 1, 2006
The study was performed near Hagere Selam, Tigray and comprises (i) measurement of P av , N tot a... more The study was performed near Hagere Selam, Tigray and comprises (i) measurement of P av , N tot and C org along the slope on 20 representative plots and (ii) crop response measurement on 143 plots. Results indicate that levels of P av , N tot and C org in the plough layer are ...
Book of abstracts, Sep 1, 2004
1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Be... more 1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Belgium jan.nyssen@agr.kuleuven.ac.be 2 Department of Land Resources Management and Environmental Protection, Mekelle University, POBox 231, Mekelle, Ethiopia 3 Relief ...
Book of abstracts, 2004
Associatie KULeuven. ...
Book of abstracts, Sep 1, 2004
1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Be... more 1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Belgium jan.nyssen@agr.kuleuven.ac.be 2 Department of Land Resources Management and Environmental Protection, Mekelle University, POBox 231, Mekelle, Ethiopia 3 Relief ...
Geo-trekking in Ethiopia’s Tropical Mountains, 2019
All over Dogu’a Tembien, farmlands appear to be terraced, though there is no evidence of large-sc... more All over Dogu’a Tembien, farmlands appear to be terraced, though there is no evidence of large-scale manual or mechanical levelling of the land, not now and not in the past. Like in many cultural landscapes, such so-called progressive terraces are due to the interaction between plot boundaries and tillage but in north Ethiopia, the process is enhanced by soil conservation activities in farmland. The chapter starts with an investigation of the ard plough or mahrasha because this is the tool that does the soil translocation work.
The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of bree... more The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of breeding practices and evaluation of estrus synchronization of dairy cattle. The study of the survey covered 180 households found in per-urban and rural areas of Ahferom, Adwa and Laelay michew district which included 113 in rural areas and 67 in per-urban areas of the districts. The Information was collected from secondary data, group discussion, AI technician, household level survey questionnaire, farm visit and personal observations. Seven hundred one synchronized cows were selected form record of artificial insemination centre and evaluated for conception rate and number of service per conception. For experimental study a total of 126 dairy cattle 42 cows from each district were selected for PGF2α treatment. Single shot of PGF2 were given for dairy cattle that exhibited estrus after first injection and double shot has given to cows that failed to show heat after single injection. Twenty conceived lactating cows were used for progesterone profile assay using hormonost micro lab farmers test to check pregnancy and embryo mortality. The data were analyzed using SPSS (16) and SAS (9.1). Dairy cattle were kept for generating income (35.6%), milk consumption (32.2%) and milk consumption and breeding (16.1%) in the study area. Purchased dairy cattle (69.9% and 68.7%) were the main foundation stock followed by own (20.35% and 17.91%) in rural and per-urban areas respectively. Mating system in the study area were AI (42.8%), AI with estrus synchronization (22.2%) and natural mating (35%). Households obtained breeding bull from neighboring (61.4%), own (21.3%) and village (17.3%). Individual performance and pedigree selection were used as selection criteria for dairy cattle. Trait preference of farmers were milk yield (1 st) body weight (2 nd)) and fertility (3 rd) for both rural and per-urban areas. Production system significantly affected daily milk yield of local cattle and cross dairy cattle. In the study area AFC (3.9± 0.8, 3.0± 0.9) years, CI (1.7± 0.4, 1.3 ±0.5) years and DO (10.9 ±0.5, 6.9± 0.62) months were for local and cross cattle respectively. Overall CR and NSC of mass synchronization were 37.95% and 2.63 respectively. BCS, bull and AI technician significantly affected CR and NSC in mass synchronization. From single injection in the experimental study 84.9% cows responded to PGF2α and 51.4% of them were conceived. 89.5% Cows show estrus sign and 52.9% conceived with double injection. Among 20 cows assumed to be pregnant on basis of milk progesterone concentration on day 18-24 post insemination, 85% were confirmed to be pregnant and 15% showed late embryonic death. Community based breeding program is the best option to improve dairy breeding practice in the study area. Improvements in facilities and management should be necessary before implementing an estrous synchronization program. Giving second injection for cows not responded for first injection of PGF2α has complimentary advantage to single injection. Progesterone assay using hormonost micro lab farmers test is a practical solution for dairy farmers to detect estrus, pregnancy and embryo mortality.
The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of bree... more The study was conducted in central zone, Tigray, Northern Ethiopia, aimed with assessment of breeding practices and evaluation of estrus synchronization of dairy cattle. The study of the survey covered 180 households found in per-urban and rural areas of Ahferom, Adwa and Laelay michew district which included 113 in rural areas and 67 in per-urban areas of the districts. The Information was collected from secondary data, group discussion, AI technician, household level survey questionnaire, farm visit and personal observations. Seven hundred one synchronized cows were selected form record of artificial insemination centre and evaluated for conception rate and number of service per conception. For experimental study a total of 126 dairy cattle 42 cows from each district were selected for PGF2α treatment. Single shot of PGF2 were given for dairy cattle that exhibited estrus after first injection and double shot has given to cows that failed to show heat after single injection. Twenty conceived lactating cows were used for progesterone profile assay using hormonost micro lab farmers test to check pregnancy and embryo mortality. The data were analyzed using SPSS (16) and SAS (9.1). Dairy cattle were kept for generating income (35.6%), milk consumption (32.2%) and milk consumption and breeding (16.1%) in the study area. Purchased dairy cattle (69.9% and 68.7%) were the main foundation stock followed by own (20.35% and 17.91%) in rural and per-urban areas respectively. Mating system in the study area were AI (42.8%), AI with estrus synchronization (22.2%) and natural mating (35%). Households obtained breeding bull from neighboring (61.4%), own (21.3%) and village (17.3%). Individual performance and pedigree selection were used as selection criteria for dairy cattle. Trait preference of farmers were milk yield (1 st) body weight (2 nd)) and fertility (3 rd) for both rural and per-urban areas. Production system significantly affected daily milk yield of local cattle and cross dairy cattle. In the study area AFC (3.9± 0.8, 3.0± 0.9) years, CI (1.7± 0.4, 1.3 ±0.5) years and DO (10.9 ±0.5, 6.9± 0.62) months were for local and cross cattle respectively. Overall CR and NSC of mass synchronization were 37.95% and 2.63 respectively. BCS, bull and AI technician significantly affected CR and NSC in mass synchronization. From single injection in the experimental study 84.9% cows responded to PGF2α and 51.4% of them were conceived. 89.5% Cows show estrus sign and 52.9% conceived with double injection. Among 20 cows assumed to be pregnant on basis of milk progesterone concentration on day 18-24 post insemination, 85% were confirmed to be pregnant and 15% showed late embryonic death. Community based breeding program is the best option to improve dairy breeding practice in the study area. Improvements in facilities and management should be necessary before implementing an estrous synchronization program. Giving second injection for cows not responded for first injection of PGF2α has complimentary advantage to single injection. Progesterone assay using hormonost micro lab farmers test is a practical solution for dairy farmers to detect estrus, pregnancy and embryo mortality.
Tropical forest issues, Mar 18, 2024
Through homestead agroforestry, households can meet their energy needs, enhance food production, ... more Through homestead agroforestry, households can meet their energy needs, enhance food production, generate cash income, produce animal feed, and enhance agrobiodiversity, thereby improving their livelihoods.
Book of abstracts, 2006
author={Nyssen, Jan and Poesen, Jean and MITIKU, H and DECKERS, J and MOEYERSONS, J and HAREGEWEY... more author={Nyssen, Jan and Poesen, Jean and MITIKU, H and DECKERS, J and MOEYERSONS, J and HAREGEWEYN, NIGUSSIE and DESCHEEMAEKER, K and GOVERS, G and GEBREMICHAEL, DESTA and NAUDTS, J and VERSTRAETEN, G and VANCAMPENHOUT, K},
... Authors: Nyssen, Jan Dewit, J Moeyersons, J Haregeweyn, Nigussie Naudts, J Amanuel, Zenebe Mi... more ... Authors: Nyssen, Jan Dewit, J Moeyersons, J Haregeweyn, Nigussie Naudts, J Amanuel, Zenebe Mitiku, Haile Bedru, Babulo Aerts, Raf Fredu, Nega Tesfamichael, Yohannes Tsehaye, Asmelash Desta, Gebremichael Poesen, Jean Deckers, Jozef A. Mintesinot, Behailu. ...
Soil Use and Management, Sep 1, 2005
Use of stone bunds to enhance soil and water conservation was first introduced to Tigray, norther... more Use of stone bunds to enhance soil and water conservation was first introduced to Tigray, northern Ethiopia in 1981. This study was designed to examine the factors that control the effectiveness of bunds installed on cropland. Qualitative and quantitative assessments of soil loss and sediment accumulation were conducted on 202 plots at 12 representative sites in Dogu'a Tembien district. Mean annual soil loss from the foot of the bunds due to tillage erosion was estimated at 39kgm-'yr-' or 20tha-'yr-', a rate which decreased with increasing age of bund. The assessed mean annual soil loss rate by sheet and rill erosion in the absence of stone bunds is 57 t ha-' yr-'. The mean measured annual rate of sediment accumulation behind the stone bunds is 119 kg m-' yr-' or 59 t ha-' yr-'. The measurements show that the introduction of stone bunds to the region has led to a 68Yo reduction in annual soil loss due to water erosion. This reduction is due to the accumulation of sediment behind the stone bunds, which occurs faster in the early years after construction and decreases as the depression behind the bunds becomes filled with sediment. New stone bunds are particularly effective in trapping sediment in transport, but regular maintenance and increase in height of the bunds is necessary to maintain their effectiveness. The average USLE P factor for stone bunds in the study area is estimated to be 0.32.
Soil & Tillage Research, Nov 1, 2006
The study was performed near Hagere Selam, Tigray and comprises (i) measurement of P av , N tot a... more The study was performed near Hagere Selam, Tigray and comprises (i) measurement of P av , N tot and C org along the slope on 20 representative plots and (ii) crop response measurement on 143 plots. Results indicate that levels of P av , N tot and C org in the plough layer are ...
Book of abstracts, Sep 1, 2004
1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Be... more 1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Belgium jan.nyssen@agr.kuleuven.ac.be 2 Department of Land Resources Management and Environmental Protection, Mekelle University, POBox 231, Mekelle, Ethiopia 3 Relief ...
Book of abstracts, 2004
Associatie KULeuven. ...
Book of abstracts, Sep 1, 2004
1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Be... more 1Institute for Land and Water Management, KULeuven, Vital Decosterstraat 102, B - 3000 Leuven, Belgium jan.nyssen@agr.kuleuven.ac.be 2 Department of Land Resources Management and Environmental Protection, Mekelle University, POBox 231, Mekelle, Ethiopia 3 Relief ...
Geo-trekking in Ethiopia’s Tropical Mountains, 2019
All over Dogu’a Tembien, farmlands appear to be terraced, though there is no evidence of large-sc... more All over Dogu’a Tembien, farmlands appear to be terraced, though there is no evidence of large-scale manual or mechanical levelling of the land, not now and not in the past. Like in many cultural landscapes, such so-called progressive terraces are due to the interaction between plot boundaries and tillage but in north Ethiopia, the process is enhanced by soil conservation activities in farmland. The chapter starts with an investigation of the ard plough or mahrasha because this is the tool that does the soil translocation work.