Tetsuji Tanaka, J. Macdiarmid, G. Horgan, P. Haggarty
The authors acknowledge the support of Scottish Government ClimateXChange Centre and the Rural and Environment Science and Analytical Services Division.
作者感谢苏格兰政府气候交流中心和农村与环境科学与分析服务部的支持。
{"title":"Global agricultural food and energy price spikes: impacts on low income households in the United Kingdom and policy options.","authors":"Tetsuji Tanaka, J. Macdiarmid, G. Horgan, P. Haggarty","doi":"10.15739/IJAPR.036","DOIUrl":"https://doi.org/10.15739/IJAPR.036","url":null,"abstract":"The authors acknowledge the support of Scottish Government ClimateXChange Centre and the Rural and Environment Science and Analytical Services Division.","PeriodicalId":230764,"journal":{"name":"International Journal of Agricultural Policy and Research","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125050260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. E. Mwaanga, Andrew Kataba, P. Parés-Casanova, E. Phiri, T. Lundu
Although the Gwembe Dwarf (GD) is the most populous goat-breed in Zambia, not much reproductive information is available. In order to investigate sperm morphological characteristics, and their relationship to body and testicular measurements, 21 GD bucks were considered. The body length (BL), heart girth (HG), body weight (BW) and scrotal circumference (SC) were measured. Thereafter, semen was flushed from caudal epididymis and stained using the Eosin-Nigrosin stain. Stained spermatozoa were examined under light microscope at X40 and X100 magnification where 95.1% and 4.9% live and dead sperm cells were observed, respectively. 62.6% spermatozoa showed no morphological abnormalities while 1.25 and 29.0% had proximal and distal cytoplasmic droplets, respectively. Using a non-parametric Spearman"s correlation, HG, BL and BW were significantly and positively correlated with SC (P<0.05). However, no significant correlation was noted between body measurements with spermatozoa abnormalities. The testicular weight (TW) was negatively and significantly correlated with the double bent tail abnormality (P<0.05). Caudal epididymal semen exhibited minimal morphological abnormalities not significantly correlated to body and testicular measurements. The HG, BL and BW can be indicators of good breeding selection criteria in the GD bucks.
{"title":"Caudal epididymal sperm morphology and body measurements relationships of the Gwembe dwarf bucks","authors":"S. E. Mwaanga, Andrew Kataba, P. Parés-Casanova, E. Phiri, T. Lundu","doi":"10.15739/IJAPR.006","DOIUrl":"https://doi.org/10.15739/IJAPR.006","url":null,"abstract":"Although the Gwembe Dwarf (GD) is the most populous goat-breed in Zambia, not much reproductive information is available. In order to investigate sperm morphological characteristics, and their relationship to body and testicular measurements, 21 GD bucks were considered. The body length (BL), heart girth (HG), body weight (BW) and scrotal circumference (SC) were measured. Thereafter, semen was flushed from caudal epididymis and stained using the Eosin-Nigrosin stain. Stained spermatozoa were examined under light microscope at X40 and X100 magnification where 95.1% and 4.9% live and dead sperm cells were observed, respectively. 62.6% spermatozoa showed no morphological abnormalities while 1.25 and 29.0% had proximal and distal cytoplasmic droplets, respectively. Using a non-parametric Spearman\"s correlation, HG, BL and BW were significantly and positively correlated with SC (P<0.05). However, no significant correlation was noted between body measurements with spermatozoa abnormalities. The testicular weight (TW) was negatively and significantly correlated with the double bent tail abnormality (P<0.05). Caudal epididymal semen exhibited minimal morphological abnormalities not significantly correlated to body and testicular measurements. The HG, BL and BW can be indicators of good breeding selection criteria in the GD bucks.","PeriodicalId":230764,"journal":{"name":"International Journal of Agricultural Policy and Research","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124208718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. D. S. Sunada, J. L. Júnior, M. Antônio, Previdelli Orrico Junior, A. W. Schwingel, M. Costa
*Corresponding Author: E-mail: anaorrico@ufgd.edu.br Studies that aim the reusing of agro-industrial wastes have become very important due to the high production of this sector and environmental preservation. The objective of this work was to evaluate the performance of digesters loaded with swine manure, increasing inclusion levels of waste oil and lipolytic enzyme, through the potential of biogas and methane production, as well as reductions in levels of total solids (TS) and volatile solids (VS). Batch digesters were loaded with substrates containing 4% TS, composed of pig manure, waste oil (ratios of 8, 10 and 12% in relation to levels of TS in the substrate) and lipolytic enzyme (0.05, 0.10, 0.15, 0.20 and 0.25% in relation to levels of TS in the substrate), water and inoculum. Maximum reduction of TS and VS were 56.13 and 64.49% respectively and occurred in inclusion levels of 0.15 and 0.13% lipase and 12% oil. The greatest potential for methane for the amounts of TS and VS added (0.23 and 0.29L) were achieved by inclusion of 12% oil and levels of 0.12 and 0.11% lipase, and these values were up to 29.7% higher than yields observed for the lowest inclusion level of enzyme. The inclusion of 12% oil and 0.15% lipase in the composition of substrates containing pig manure improves the yields of methane and reductions in pollutant constituents.
{"title":"Addition of lipolytic enzyme in anaerobic co-digestion of swine manure and inclusion levels of waste vegetable oil.","authors":"N. D. S. Sunada, J. L. Júnior, M. Antônio, Previdelli Orrico Junior, A. W. Schwingel, M. Costa","doi":"10.15739/IJAPR.019","DOIUrl":"https://doi.org/10.15739/IJAPR.019","url":null,"abstract":"*Corresponding Author: E-mail: anaorrico@ufgd.edu.br Studies that aim the reusing of agro-industrial wastes have become very important due to the high production of this sector and environmental preservation. The objective of this work was to evaluate the performance of digesters loaded with swine manure, increasing inclusion levels of waste oil and lipolytic enzyme, through the potential of biogas and methane production, as well as reductions in levels of total solids (TS) and volatile solids (VS). Batch digesters were loaded with substrates containing 4% TS, composed of pig manure, waste oil (ratios of 8, 10 and 12% in relation to levels of TS in the substrate) and lipolytic enzyme (0.05, 0.10, 0.15, 0.20 and 0.25% in relation to levels of TS in the substrate), water and inoculum. Maximum reduction of TS and VS were 56.13 and 64.49% respectively and occurred in inclusion levels of 0.15 and 0.13% lipase and 12% oil. The greatest potential for methane for the amounts of TS and VS added (0.23 and 0.29L) were achieved by inclusion of 12% oil and levels of 0.12 and 0.11% lipase, and these values were up to 29.7% higher than yields observed for the lowest inclusion level of enzyme. The inclusion of 12% oil and 0.15% lipase in the composition of substrates containing pig manure improves the yields of methane and reductions in pollutant constituents.","PeriodicalId":230764,"journal":{"name":"International Journal of Agricultural Policy and Research","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121525153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1International Institute of Tropical Agriculture (IITA) Burundi office, BP 1893, Bujumbura. 2International Institute of Tropical Agriculture (IITA), Humid Forest Ecoregional Center, BP 2008 Messa, Yaounde, Cameroon. 3Graduate School of Asian and African Area Studies, Kyoto University, Japan. 4Programme National de Developpement des Racines et Tubercules (PNDRT) Cameroun. 5AVRDC/The World Vegetable Center, Samanko Research Station, BP 320, Bamako, Mali.
{"title":"Cassava value chain development through partnership and stakeholders' platform in Cameroon","authors":"E. Njukwe, P. Sarr, Araki Shigeru, Thomas Ngue","doi":"10.15739/IJAPR.011","DOIUrl":"https://doi.org/10.15739/IJAPR.011","url":null,"abstract":"1International Institute of Tropical Agriculture (IITA) Burundi office, BP 1893, Bujumbura. 2International Institute of Tropical Agriculture (IITA), Humid Forest Ecoregional Center, BP 2008 Messa, Yaounde, Cameroon. 3Graduate School of Asian and African Area Studies, Kyoto University, Japan. 4Programme National de Developpement des Racines et Tubercules (PNDRT) Cameroun. 5AVRDC/The World Vegetable Center, Samanko Research Station, BP 320, Bamako, Mali.","PeriodicalId":230764,"journal":{"name":"International Journal of Agricultural Policy and Research","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115143609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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