International Journal of Agricultural Policy and Research最新文献_第3页

Global agricultural food and energy price spikes: impacts on low income households in the United Kingdom and policy options. 全球农产品和能源价格飙升:对英国低收入家庭的影响及政策选择。

International Journal of Agricultural Policy and Research Pub Date : 2015-03-01 DOI: 10.15739/IJAPR.036

Tetsuji Tanaka, J. Macdiarmid, G. Horgan, P. Haggarty

引用次数: 1

Caudal epididymal sperm morphology and body measurements relationships of the Gwembe dwarf bucks 格温贝矮雄鹿尾侧附睾精子形态与体型测量的关系

International Journal of Agricultural Policy and Research Pub Date : 2014-10-07 DOI: 10.15739/IJAPR.006

S. E. Mwaanga, Andrew Kataba, P. Parés-Casanova, E. Phiri, T. Lundu

{"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}

引用次数: 2

Addition of lipolytic enzyme in anaerobic co-digestion of swine manure and inclusion levels of waste vegetable oil. 猪粪厌氧共消化中脂解酶的添加及废植物油的夹杂水平。

International Journal of Agricultural Policy and Research Pub Date : 1900-01-01 DOI: 10.15739/IJAPR.019

N. D. S. Sunada, J. L. Júnior, M. Antônio, Previdelli Orrico Junior, A. W. Schwingel, M. Costa

{"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}

引用次数: 5

Cassava value chain development through partnership and stakeholders' platform in Cameroon 喀麦隆通过伙伴关系和利益相关者平台发展木薯价值链

International Journal of Agricultural Policy and Research Pub Date : 1900-01-01 DOI: 10.15739/IJAPR.011

E. Njukwe, P. Sarr, Araki Shigeru, Thomas Ngue

引用次数: 11