خيارات البحث
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Acceptability of selected common shrubs/tree leaves in Nigeria by West African Dwarf goats
2008
Ikhimioya, I.
Fodder production, dry season leaf retention, and concentrations of crude protein and in vitro dry matter (DM) digestibility in fodder of Desmanthus virgatus, Desmodium cinereum, Desmodium gyroides, and Cajanus cajan were compared under cutting on an acid soil in southern Ethiopia. Desmodium cinereum, D. distortum, D. discolor, and C. cajan retained a higher percentage of green more fodder than D. gyroides and Desmanthus virgatus. Crude protein concentration in fodder of all species during the dry season was above 130 g kg DM, indicating that these species could be used as protein banks to supplement native pastures and crop residues during the dry season. Based on fodder production, dry season leaf retention, and concentration of crude protein in fodder, D. cinereum, D. distortum, D. disolor, and C. cajan are recommended for further testing with animals.
اظهر المزيد [+] اقل [-]Extent and implications of incorrect offspring-sire relationships in pastoral production system in Kajiado District, Kenya
2008
Maichomo, M.W. | Gitau, G.K. | Gathuma, J.M. | Ndung'u, J.M. | Kosura, O. | Olivier, H.O.
The aim of this study was to evaluate accuracy of farmer's paternity identification which determines success of future breed selection and hence genetic gain. Paternity of 269 Orma/zebu and Sahiwal/zebu calves was evaluated using genetic markers and the likelihood based method. Results indicate that only 6.7% farmer alleged paternities were confirmed, 88% parent-offspring relationships were rejected and 18% parent-offspring relationships were undetermined. However, 82% of offsprings were assigned at least 80% confident paternities to one of the sampled candidate males. These results suggest that there is need to institute proper breeding program in the pastoral area if farmers are to benefit from their current efforts of breed improvement.
اظهر المزيد [+] اقل [-]The feed values of indigenous multipurpose trees for sheep in Ethiopia: The case of Vernonia amygdalina, Buddleja polystachya and Maesa lanceolata
2008
Haile, Aynalem | Tolemariam, T.
The feed resources base, the feeding systems and feed values of three indigenous trees Girawa, Anfare and Kelewa (Local (Amharic), Ethiopian names ) were studied for sheep in sub humid, mid altitude area of south western Ethiopia. The study involved a survey of the feed resources base and assessment of the feeding systems, chemical analysis and in vitro dry matter digestibility. In addition, Girawa was selected to study its effect on growth performances using 32 lambs. The levels of Girawa used for the growth performance study in groups I, II, III and IV, respectively were 100 g/d, 200 g/d, 300 g/d and 400 g/d. The main feed resources for sheep in Jimma area were found to be natural pasture, crop residues, crop aftermaths and indigenous multipurpose trees. Grazing on natural pasture constituted the main feeding system. The indigenous trees were cut and fed occasionally. The levels of CP ranged from 186.2 to 244.4 g/kg DM with minimum level in Anfare. Higher values were recorded for Girawa. Organic matter content was higher for Anfare (924.3 g/kg DM) and lower for Girawa (877.9 g/kg DM). In vitro dry matter digestibility values were 0.448, 0.422 and 0.458 for Girawa, Anfare and Kelewa, respectively. Supplementation of Girawa had an effect (p<0.01) on live weight gains of lambs. Lambs that were offered 400 g/d of Girawa had a higher daily live weight gain (95.1 g/d) compared to those supplemented with 200 (43.3 g/d) and 300 g/d (50.5 g/d) of Girawa as well as the control group (34.0 g/d). Weight gains were not different between the control group and those supplemented with 200 and 300 g/d of Girawa. It was concluded that these feed resources represent a great potential for sheep production in areas where the resources are available. It is also suggested that more studies are needed on higher level of Girawa than the present study on animal performances along with its anti-nutritional effects.
اظهر المزيد [+] اقل [-]Characteristics of feeding and breeding practices for intensification of smallholder dairy systems in the Kenya highlands
2008
Bebe, B.O. | Udo, H.M.J. | Thorpe, W.R.
This study aimed at better understanding of the characteristics of feeding and breeding practices smallholder farmers adopt in intensifying their dairy production. Use of hired labour for fodder gathering, growing of fodder crops and purchase of feeds increased with increasing intensification, but Bos taurus breeds did not respond to increasing feeding intensification while Bos indicus cattle responded, calving at earlier age and yielding more milk. Overall, first calving occurred at 32 months, but days open prolonged to 250 days with milk yield of 4 litres per day of calving interval. A principal component analysis extracted six feeding and breeding components, explaining 71.79% of the total variations in feeding and breeding practices for dairy intensification. The six components were labelled: non-intensified feeding and breeding; breeding decisions based-intensification; high external resource based-intensification; moderate resource based-intensification; resource poor based-intensification; and moderate external resource based-intensification. These characteristics points to some 'evolutionary process' of intensification involving feeding and breeding decisions, depending on the risk-bearing capacity of the household. Intensification enhancing interventions for smallholders need be considered in the context of the household economy. Interventions on feeding and breeding have to be packaged together holistically if intensification is to enhance productivity. A selective intervention on only one of these is associated with low productivity levels, only contributing to sustaining family subsistence livelihoods.
اظهر المزيد [+] اقل [-]Village chicken characteristics and their seasonal production situation in Jamma District, South Wollo, Ethiopia
2008
Mengesha, M. | Tamir, B. | Dessie, Tadelle
This study was conducted in four Peasant Associations in Jamma district, with the objectives of assessing village chicken production situation and their characters. A total of 120 households from four PAs were involved in the study. A single-visit and multi-subject type of survey was conducted using structured questionnaires between November and December 2005, which was complemented by one arrival survey in August 2005 aiming at assessing seasonal variation in village chicken production. The survey work indicated that, the overall average flock size was 5.6±0. 8 per household. Flock size was significantly higher (p<0.05) for rich households than medium and poor households. Average flock size was not significantly (P>0.05) affected by PAs and agro ecologies. Major phenotypic appearance of chicken flock was white (28.9 %) followed by gray (25.9%). The mean of age at first lay, number of clutches per hen per year and number of eggs laid per clutch per hen were 5.05±1.34 months, 5.06±1.65 and 15.39±5.05, respectively. The mean hatchability was 84% per hen per household. The ratio of male to female was around 1:3. The purpose of keeping poultry was mainly for sale (38.11) followed by home consumption (31.56%). Of all classes of chicken, significant (P<0.05) variation between seasons and prices were observed for cockerels, which were 10.5 in winter and 9.0 Birr in summer seasons while season had significant (P<0.05) effect on the body weight of local cockerels and the body weight of cross bred hens was also affected by agro ecology. For better productivity, changing traditional management would be the first priority.
اظهر المزيد [+] اقل [-]The feed value of indigenous multipurpose trees for sheep: The case of Vernonia amygdalina (Girawa) Buddleja polystachya (Chocho) and Maesa lanceolata (Kelewa)
2008
Haile, Aynalem | Tolemariam, T.
The feed resources base, the feeding systems and feed values of three indigenous trees Girawa, Anfare and Kelewa (Local (Amharic), Ethiopian names ) were studied for sheep in sub humid, mid altitude area of south western Ethiopia. The study involved a survey of the feed resources base and assessment of the feeding systems, chemical analysis and in vitro dry matter digestibility. In addition, Girawa was selected to study its effect on growth performances using 32 lambs. The levels of Girawa used for the growth performance study in groups I, II, III and IV, respectively were 100 g/d, 200 g/d, 300 g/d and 400 g/d. The main feed resources for sheep in Jimma area were found to be natural pasture, crop residues, crop aftermaths and indigenous multipurpose trees. Grazing on natural pasture constituted the main feeding system. The indigenous trees were cut and fed occasionally. The levels of CP ranged from 186.2 to 244.4 g/kg DM with minimum level in Anfare. Higher values were recorded for Girawa. Organic matter content was higher for Anfare (924.3 g/kg DM) and lower for Girawa (877.9 g/kg DM). In vitro dry matter digestibility values were 0.448, 0.422 and 0.458 for Girawa, Anfare and Kelewa, respectively. Supplementation of Girawa had an effect (p<0.01) on live weight gains of lambs. Lambs that were offered 400 g/d of Girawa had a higher daily live weight gain (95.1 g/d) compared to those supplemented with 200 (43.3 g/d) and 300 g/d (50.5 g/d) of Girawa as well as the control group (34.0 g/d). Weight gains were not different between the control group and those supplemented with 200 and 300 g/d of Girawa. It was concluded that these feed resources represent a great potential for sheep production in areas where the resources are available. It is also suggested that more studies are needed on higher level of Girawa than the present study on animal performances along with its anti-nutritional effects.
اظهر المزيد [+] اقل [-]Socio-economical contribution and labor allocation of village chicken production of Jamma district, South Wollo, Ethiopia
2008
Mammo, M. | Berhan, T. | Dessie, Tadelle
The mode of ownership of chicken in the family was various types, for instance shared ownership constituted about (57%) followed by individual ownership (43%) among the members of the households. More than around 70% of overall care-taking of chickens, feeding of chickens, cleaning of birds-quarter, treating of sick birds, decision for off take of poultry products were the responsibility of women. The major criteria used for judging of the price of local chickens were body weight (34.2%), plumage color (33.3%) and comp-type (32.4%). Fluctuations in the prices of the village chicken and chicken-products were mainly due to purchasing power of the consumers (33.4), fasting (33.2), and availability of products (32.5%). Almost all farmers were selling their chicken and chicken products in local markets.
اظهر المزيد [+] اقل [-]The structure of rural economy in Zemgale intra-regions
2008
Liscova, A., Latvia Univ. of Agriculture, Jelgava (Latvia)
Zemgale planning region divides into two intra-regions (Zemgale 1 and Zemgale 2) by natural, soil and other agricultural resources. Each intra-region has different size of farms. The aim of the research was to find the structure of rural economy in different size farms or rural enterprises of Zemgale 1 and Zemgale 2 intra-regions. The research showed that very small farms dominate grow-plant sectors production. Medium size farms and enterprises have solid high proportion of grow-plant sector production in total production value. This proportion is even higher in biggest agricultural enterprises and companies (100 is less than or equal 250 ESU). In general author has stated that in Zemgale 1, which is the biggest agricultural production territory in Latvia, grow-plant production sectors dominate.
اظهر المزيد [+] اقل [-]Environmentally friendly entrepreneurship and problems of its definition
2008
Spruge, S., Latvia Univ. of Agriculture, Jelgava (Latvia)
Recently we have been noticing words as 'sustainable development', 'environment protection', 'environmentally friendly' etc more and more often. We understand meaning of those concepts, but there are no unambiguous definitions of these words in literature. Each of these notions includes particular characterizing elements which understanding and characterizing of which make possible to detect correctness of application or context. Sustainability like entrepreneurship is a process which takes place within definite environment around it. Mutual interaction of the processes produces consequences which have to satisfy all the interested parties. Therefore, it is necessary to integrate several science branches to solve this problem- i. e. economics and ecology. Nowadays, environment issues become part of each person, institution, policy and law. Environmental questions are integrated in different fields of economics and entrepreneurship, as well. It is hard to define environmentally friendly entrepreneurship. But there is a flexible definition that could be used in different economical spheres with great variability of economical circumstances, and it is- characterised circumstances would not be secured for a long time, yet. It is complicated to define the concept since this is a value involving process. Values which are sources for idea of sustainable development are based on need to form society satisfying human interests and unthreatening future generations, necessity to secure economical growth including moral, social and ecological aspects.
اظهر المزيد [+] اقل [-]Relationship between corruption level changes and economic growth in the world and Europe
2008
Paiders, J., University of Latvia, Riga (Latvia). Faculty of Geography and Earth Sciences
The present article reviews part of a research paper on regional differences in evaluating economic growth and the various aspects that influence it. In this publication, the relationship between changes in corruption level and economic growth is analyzed, paying close regard to all countries of the world and taking Europe separately as a region with relatively consistent economic and social development levels. The author analyzes the average values and changes in gross domestic product (GDP) per capita based on purchasing-power-parity valuation (in US dollars) for 1998 – 2005 and the corruption perception index (CPI) of 1998 – 2007. When looking at data from all countries of the world and European countries, no interrelation can be observed between changes in CPI and GDP per capita. These values fluctuate independently of each other. The obtained results give rise to doubt whether CPI is a suitable indicator for determining the corruption level. The author concludes that assertions of negative (or positive) influence that corruption is said to have on GDP increase should be taken very critically.
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