The research analyzed the expression and difference of MSTN/Smad signal path genes(MSTN, Smad2, Smad3,Smad4, TGFBR1, TGFBR2) in Turpan black sheep muscle tissue, as well as the correlation with some growth indices. Be...The research analyzed the expression and difference of MSTN/Smad signal path genes(MSTN, Smad2, Smad3,Smad4, TGFBR1, TGFBR2) in Turpan black sheep muscle tissue, as well as the correlation with some growth indices. Besides,the research used the fluorescence quantitative PCR technique to detect the expression level of MSTN, Smad2, Smad3, Smad4,TGFBR1 and TGFBR2 genes in m RNA of Turpan black sheep muscle. The research also used conventional and histological methods to determine the muscle growth and meat producibility indices, discussed the relationship between MSTN/Smad signal path and muscle growth and meat production. The result shows that these genes are expressed in Turpan black sheep muscle tissues, and have some relationship with body weight, height, length, chest circumference, hoof circumference, carcass and dressing percentage. The MSTN gene is negatively correlated with body weight(r = 0.993, P < 0.05), and hoof circumference(r= 0.957, p < 0.01), but has no significant correlation with body height, length, carcass weight, dressing percentages(P > 0.05);Smad2 gene shows significantly negative correlation the with dressing percentage(r = 0.918, p < 0.05), but no significant correlation with body weight, height, length, chest circumference, hoof circumference and carcass(P > 0.05); Smad3 gene shows no significant correlation with any of them(P > 0.05); Smad4, TGFBR1, TGFBR2 did not show any significant relationship with body height, length, chest circumference, weight and dressing percentage(P > 0.05).展开更多
The study was conducted to assess management practices and constraints of Black head Somali sheep in Awbarre district of Fafen zone, Somali regional state, Ethiopia. A total of 120 households were purposively selected...The study was conducted to assess management practices and constraints of Black head Somali sheep in Awbarre district of Fafen zone, Somali regional state, Ethiopia. A total of 120 households were purposively selected for this study using purposive sampling technique. The data were collected through the questionnaire, key informants interview, focus group discussions & field observations. The primary purpose of keeping sheep was for income generation followed by saving, meat production, milk, social and cultural functions. The main feeds for sheep during wet season were communal & private natural pastures. In dry season, communal natural pasture, crop residues & private natural pasture were used. The major source of water during wet season was dam/pond, whereas in the dry season spring & pipe water were used. The majority of the respondents (85.8%) used houses enclosed with thorn woody trees and houses enclosed with stone/brick fence were also reported. Majority of the respondents used controlled mating system and sheep are bred to lamb when forage is plentiful because they are less drought tolerant than goats and to avoid unwanted lambing in dry season. Majority (90%) of respondents own their breeding ram and those who have no breeding males used their neighbors’ rams and borrow from others. The breeding rams were born in the flock implying that animals within the flock are very closely related which leads to inbreeding. The most important health problems affecting sheep were circling disease, sheep pox, tick lameness (tick paralysis), Peste des Petits Ruminants (PPR), bloating, and Foot & mouth disease (FMD). The major constraints hindering sheep production in the study area were shortage of veterinary service, feed shortage, scarcity of water, predators, diseases, and marketing. Therefore, to improve and increase the productivity of sheep production in the study area, better management practices and establishing of veterinary service centers are necessary.展开更多
[ Objective] The research was aimed to provide the basis for the development and utilization of Guide black-fur sheep and its disease di- agnosis and prevention. [ Methed] Blood samples were collected from 15 healthy ...[ Objective] The research was aimed to provide the basis for the development and utilization of Guide black-fur sheep and its disease di- agnosis and prevention. [ Methed] Blood samples were collected from 15 healthy adult Guide black-fur sheep in Black-Fur Sheep Farm o'f Guinan County in Qinghai Province. Eighteen blood indices belonging to three classes, erythrocyte, leukocyte and platelet, were determined. E Resultl The blood indices of the Guide black-fur sheep were as follows: the white blood cell count, (7.52 ±2.72) × 109/L; the red blood cell count, (13.04 ± 2.81 ) × 1012/L; the mean corpuscular hemoglobin, (85.36 +27.05) g/L; the mean corpuscular volume, (37.22 ± 1.93) fL; the mean corpuscular hemoglobin concentration, (13.19 ±0.96) pg; the platelet count, (370.67 ± 139.60) × 109/L; the lymphocyte absolute count, (14.11 +9.36) x 109/L; the absolute count of intermediate cell, (0.79 ±0.46)× 109/L; and the absolute neutrophil count, (0.81 +0.71 ) ×109/L.- Conclusion] The reseamh lays the foundation for further Drotectina the aenetic resources of the Guide black-fur sheep and imDrovinQ their production performance.展开更多
The study was conducted in the Awbarre district of the Fafen zone of the Somali regional state of Ethiopia. The objective of the study was to assess the breeding practices and reproductive performance of Black-head So...The study was conducted in the Awbarre district of the Fafen zone of the Somali regional state of Ethiopia. The objective of the study was to assess the breeding practices and reproductive performance of Black-head Somali sheep under a traditional management system. Purposive and simple random sampling techniques were used to select targeted kebeles and households, respectively. A total of 120 households were selected from four kebeles, each of 30 households, based on the production system and sheep population. Semi-structured questionnaires, group discussions, key informants interviews and field observations were used to generate the required data. The primary purpose of keeping sheep was for income generation, followed by saving as a future asset. The majority (89.2%) of the respondents separated male and female animals during herding. The selection criteria for breeding rams were appearance, growth, pedigree, and color while for breeding ewes were appearance, adaptability, pedigree, color, and lamb growth. The overall weaning age of Black-head Somali sheep in the study area was 3.7 months for both males & females. The castration of male sheep was common for the purpose of fattening, fattening with breeding control and breeding control as well. The castration is mainly performed during the summer and autumn and the methods of castration were both traditional and modern methods, the traditional castration method being the most important one in pastoral areas. The age of sexual maturity was 7.64 months for rams and 8.97 months for ewe’s male and female lambs in the pastoral area and 8.42 & 8.38 for rams & ewes in agro-pastoral and overall lambing interval was 11 months. On average, the ewe of Black-head Somali sheep in pastoral & agro-pastoral could produce 9.49 & 9.57 lambs, respectively in their lifetime. As the pastoralists and agro-pastoralists indicated the source of the breeding ram was their own, so the exchange of breeding ram is recommended to minimize the risk of inbreeding and further studies of on-farm performance investigation would be necessary to be carried out so as to understand the uniqueness of the breed better.展开更多
文摘The research analyzed the expression and difference of MSTN/Smad signal path genes(MSTN, Smad2, Smad3,Smad4, TGFBR1, TGFBR2) in Turpan black sheep muscle tissue, as well as the correlation with some growth indices. Besides,the research used the fluorescence quantitative PCR technique to detect the expression level of MSTN, Smad2, Smad3, Smad4,TGFBR1 and TGFBR2 genes in m RNA of Turpan black sheep muscle. The research also used conventional and histological methods to determine the muscle growth and meat producibility indices, discussed the relationship between MSTN/Smad signal path and muscle growth and meat production. The result shows that these genes are expressed in Turpan black sheep muscle tissues, and have some relationship with body weight, height, length, chest circumference, hoof circumference, carcass and dressing percentage. The MSTN gene is negatively correlated with body weight(r = 0.993, P < 0.05), and hoof circumference(r= 0.957, p < 0.01), but has no significant correlation with body height, length, carcass weight, dressing percentages(P > 0.05);Smad2 gene shows significantly negative correlation the with dressing percentage(r = 0.918, p < 0.05), but no significant correlation with body weight, height, length, chest circumference, hoof circumference and carcass(P > 0.05); Smad3 gene shows no significant correlation with any of them(P > 0.05); Smad4, TGFBR1, TGFBR2 did not show any significant relationship with body height, length, chest circumference, weight and dressing percentage(P > 0.05).
文摘The study was conducted to assess management practices and constraints of Black head Somali sheep in Awbarre district of Fafen zone, Somali regional state, Ethiopia. A total of 120 households were purposively selected for this study using purposive sampling technique. The data were collected through the questionnaire, key informants interview, focus group discussions & field observations. The primary purpose of keeping sheep was for income generation followed by saving, meat production, milk, social and cultural functions. The main feeds for sheep during wet season were communal & private natural pastures. In dry season, communal natural pasture, crop residues & private natural pasture were used. The major source of water during wet season was dam/pond, whereas in the dry season spring & pipe water were used. The majority of the respondents (85.8%) used houses enclosed with thorn woody trees and houses enclosed with stone/brick fence were also reported. Majority of the respondents used controlled mating system and sheep are bred to lamb when forage is plentiful because they are less drought tolerant than goats and to avoid unwanted lambing in dry season. Majority (90%) of respondents own their breeding ram and those who have no breeding males used their neighbors’ rams and borrow from others. The breeding rams were born in the flock implying that animals within the flock are very closely related which leads to inbreeding. The most important health problems affecting sheep were circling disease, sheep pox, tick lameness (tick paralysis), Peste des Petits Ruminants (PPR), bloating, and Foot & mouth disease (FMD). The major constraints hindering sheep production in the study area were shortage of veterinary service, feed shortage, scarcity of water, predators, diseases, and marketing. Therefore, to improve and increase the productivity of sheep production in the study area, better management practices and establishing of veterinary service centers are necessary.
基金funded by Research Fund for Young and Middle-Aged Talent of Northwest University for Nationalities(XBMU-2006-BD-81)
文摘[ Objective] The research was aimed to provide the basis for the development and utilization of Guide black-fur sheep and its disease di- agnosis and prevention. [ Methed] Blood samples were collected from 15 healthy adult Guide black-fur sheep in Black-Fur Sheep Farm o'f Guinan County in Qinghai Province. Eighteen blood indices belonging to three classes, erythrocyte, leukocyte and platelet, were determined. E Resultl The blood indices of the Guide black-fur sheep were as follows: the white blood cell count, (7.52 ±2.72) × 109/L; the red blood cell count, (13.04 ± 2.81 ) × 1012/L; the mean corpuscular hemoglobin, (85.36 +27.05) g/L; the mean corpuscular volume, (37.22 ± 1.93) fL; the mean corpuscular hemoglobin concentration, (13.19 ±0.96) pg; the platelet count, (370.67 ± 139.60) × 109/L; the lymphocyte absolute count, (14.11 +9.36) x 109/L; the absolute count of intermediate cell, (0.79 ±0.46)× 109/L; and the absolute neutrophil count, (0.81 +0.71 ) ×109/L.- Conclusion] The reseamh lays the foundation for further Drotectina the aenetic resources of the Guide black-fur sheep and imDrovinQ their production performance.
文摘The study was conducted in the Awbarre district of the Fafen zone of the Somali regional state of Ethiopia. The objective of the study was to assess the breeding practices and reproductive performance of Black-head Somali sheep under a traditional management system. Purposive and simple random sampling techniques were used to select targeted kebeles and households, respectively. A total of 120 households were selected from four kebeles, each of 30 households, based on the production system and sheep population. Semi-structured questionnaires, group discussions, key informants interviews and field observations were used to generate the required data. The primary purpose of keeping sheep was for income generation, followed by saving as a future asset. The majority (89.2%) of the respondents separated male and female animals during herding. The selection criteria for breeding rams were appearance, growth, pedigree, and color while for breeding ewes were appearance, adaptability, pedigree, color, and lamb growth. The overall weaning age of Black-head Somali sheep in the study area was 3.7 months for both males & females. The castration of male sheep was common for the purpose of fattening, fattening with breeding control and breeding control as well. The castration is mainly performed during the summer and autumn and the methods of castration were both traditional and modern methods, the traditional castration method being the most important one in pastoral areas. The age of sexual maturity was 7.64 months for rams and 8.97 months for ewe’s male and female lambs in the pastoral area and 8.42 & 8.38 for rams & ewes in agro-pastoral and overall lambing interval was 11 months. On average, the ewe of Black-head Somali sheep in pastoral & agro-pastoral could produce 9.49 & 9.57 lambs, respectively in their lifetime. As the pastoralists and agro-pastoralists indicated the source of the breeding ram was their own, so the exchange of breeding ram is recommended to minimize the risk of inbreeding and further studies of on-farm performance investigation would be necessary to be carried out so as to understand the uniqueness of the breed better.