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Dynamics of Woody Species Composition and Diversity as a Result of Conversion of Open Grazing Land to an Exclosure in Northern Ethiopia: The Case of Tigray Lowlands 埃塞俄比亚北部露天牧场转为围栏后林木物种组成和多样性的动态变化:提格雷低地案例
Pub Date : 2024-08-10 DOI: 10.9734/ajraf/2024/v10i3303
Kiros Abay
Exclosures have been establishedon open grazing lands to tackle environmental degradation in Ethiopia, particularly in Tigray region. However, little has been know with regard to the effect of establishing exclosures on open grazing lands especially in Lowlands of Tigray region, northern Ethiopia. Hence, this study was conducted to explore the effect of conversion of grazing lands to an exclosure on woody species composition and diversity at Tselemti district, which was taken as testing site to represent the lowlands of Tigray.  To collect data on vegetation, three line transects, parallel to each other and across the slope were laid in the exclosure and open grazing lands systematically at 150 meters interval. Along each transect line, six sample plots measuring 20m×20m were laid down at 100 meters intervals from each other. So, a total of 36 plots (18 from grazing land and 18 from exclosure), measuring 20m*20m, were established along 6 transects for vegetation sampling. 41 and 16 woody species were recorded in the exclosure and grazing land respectively. Shannon diversity, richness, evenness and density were found to be significantly higher (P<0.05) in exclosure than grazing land. It can be concluded that conversion of open grazing lands to exclosures is a viable option to restore degraded vegetation. For this reason, additional exclosures have to be established on previously degraded open grazing lands in the area and areas with similar biophysical setup.
在埃塞俄比亚,特别是在提格雷地区,已经在露天牧场上建立了围栏,以解决环境退化问题。然而,人们对在露天牧场,尤其是埃塞俄比亚北部提格雷州低地建立围栏的效果知之甚少。因此,本研究以 Tselemti 区为试验地点,探讨将牧场改为围栏对木本物种组成和多样性的影响,以代表提格雷低地。 为了收集植被数据,在围栏地和开阔牧场上以 150 米的间距系统地铺设了三条相互平行且横跨斜坡的线状横断面。沿着每条横断线,以 100 米的间距划分出 6 个面积为 20 米×20 米的样地。因此,沿 6 条横断面共设立了 36 个 20 米*20 米的样地(18 个来自牧场,18 个来自围栏)进行植被取样。在围栏地和牧场分别记录到 41 种和 16 种木本物种。结果发现,围栏地的香农多样性、丰富度、均匀度和密度均明显高于放牧地(P<0.05)。由此可以得出结论,将露天牧场改成围栏是恢复退化植被的一个可行方案。因此,必须在该地区以前退化的露天牧场和生物物理环境类似的地区建立更多的围栏。
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引用次数: 0
Dynamics of Woody Species Composition and Diversity as a Result of Conversion of Open Grazing Land to an Exclosure in Northern Ethiopia: The Case of Tigray Lowlands 埃塞俄比亚北部露天牧场转为围栏后林木物种组成和多样性的动态变化:提格雷低地案例
Pub Date : 2024-08-10 DOI: 10.9734/ajraf/2024/v10i3303
Kiros Abay
Exclosures have been establishedon open grazing lands to tackle environmental degradation in Ethiopia, particularly in Tigray region. However, little has been know with regard to the effect of establishing exclosures on open grazing lands especially in Lowlands of Tigray region, northern Ethiopia. Hence, this study was conducted to explore the effect of conversion of grazing lands to an exclosure on woody species composition and diversity at Tselemti district, which was taken as testing site to represent the lowlands of Tigray.  To collect data on vegetation, three line transects, parallel to each other and across the slope were laid in the exclosure and open grazing lands systematically at 150 meters interval. Along each transect line, six sample plots measuring 20m×20m were laid down at 100 meters intervals from each other. So, a total of 36 plots (18 from grazing land and 18 from exclosure), measuring 20m*20m, were established along 6 transects for vegetation sampling. 41 and 16 woody species were recorded in the exclosure and grazing land respectively. Shannon diversity, richness, evenness and density were found to be significantly higher (P<0.05) in exclosure than grazing land. It can be concluded that conversion of open grazing lands to exclosures is a viable option to restore degraded vegetation. For this reason, additional exclosures have to be established on previously degraded open grazing lands in the area and areas with similar biophysical setup.
在埃塞俄比亚,特别是在提格雷地区,已经在露天牧场上建立了围栏,以解决环境退化问题。然而,人们对在露天牧场,尤其是埃塞俄比亚北部提格雷州低地建立围栏的效果知之甚少。因此,本研究以 Tselemti 区为试验地点,探讨将牧场改为围栏对木本物种组成和多样性的影响,以代表提格雷低地。 为了收集植被数据,在围栏地和开阔牧场上以 150 米的间距系统地铺设了三条相互平行且横跨斜坡的线状横断面。沿着每条横断线,以 100 米的间距划分出 6 个面积为 20 米×20 米的样地。因此,沿 6 条横断面共设立了 36 个 20 米*20 米的样地(18 个来自牧场,18 个来自围栏)进行植被取样。在围栏地和牧场分别记录到 41 种和 16 种木本物种。结果发现,围栏地的香农多样性、丰富度、均匀度和密度均明显高于放牧地(P<0.05)。由此可以得出结论,将露天牧场改成围栏是恢复退化植被的一个可行方案。因此,必须在该地区以前退化的露天牧场和生物物理环境类似的地区建立更多的围栏。
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引用次数: 0
The Coastal Environmental Profiling (CEP) of Barangay Mana, Malita, Davao Occidental, Philippines: Insights and Implications for Sustainable Management 菲律宾西达沃马利塔马纳镇沿海环境剖析 (CEP):对可持续管理的启示和影响
Pub Date : 2024-08-08 DOI: 10.9734/ajraf/2024/v10i3302
Divine Louis P. Villalon, Marivic M. Sanico, John Paul R. Pacyao
The study focused on ascertaining comprehensive coastal environmental profile of Barangay Mana, Malita, Davao Occidental. Coastal environmental profiling can help policy-makers design appropriate management strategies in the locality. A self-structured survey questionnaire and key informant interview were articulated to know the stratum of the coastal area in terms of socio- political setting, present natural resources, economic sector, existing people’s organization and management issues and opportunities. Purposive sampling technique was employed for data gathering following one-shoot sampling technique. Mean, percentage and catch per unit effort (CPUE) formula were used in analyzing the findings of the data. Results revealed that the overall population were 5,679 people, their average age is 31.92 and the productive gender is male. The average of their monthly income is Php7, 550.00 and business and fishing activities were common sources of income. An approximate 6 hectares wetland ecosystem were occupied by mangroves and shrubs grown and 1,500m coastline and 0. 4 hectares of estuaries were abundant with seaweeds, seagrasses, mollusks and crustaceans and by which has contributed to building marine species habitat and livelihood. Economic sector was uplifted by 16.32% of fishermen with their volume caught fishes that goes through fermented processing and fish selling. There were four (4) people’s organizations that are engaging with product development and innovation. These People’s Organization aims to generate alternative livelihood income, thereby reduce poverty dense in the barangay. They were likewise supplemented with opportunities designed to fish food security and resiliency and Sustainable Livelihood Programs (SLP) from Local Government Unit (LGU) and National Government Agencies (NGA’s). With the result of the study, it is recommended that Barangay Mana is still in need of various supports from local and national offices in adopting and addressing management issues in both economic and coastal environments.
这项研究的重点是确定西达沃省马利塔市马纳村的综合沿海环境概况。海岸环境概况有助于决策者为当地设计适当的管理策略。为了了解沿海地区的社会政治环境、现有自然资源、经济部门、现有人民组织以及管理问题和机遇等方面的情况,采用了自我结构化调查问卷和关键信息提供者访谈。在采用单次抽样技术收集数据时,采用了有目的的抽样技术。在分析数据结果时使用了平均值、百分比和单位努力渔获量(CPUE)公式。结果显示,总人口为 5 679 人,平均年龄为 31.92 岁,生产性别为男性。他们的平均月收入为 7 550.00 菲律宾比索,商业和渔业活动是他们的主要收入来源。红树林和灌木丛占据了约 6 公顷的湿地生态系统,1,500 米长的海岸线和 0.4 公顷的河口蕴藏着丰富的海藻、海草、软体动物和甲壳类动物,为海洋物种的栖息地和生计做出了贡献。16.32% 的渔民通过发酵加工和销售捕捞的鱼类,提高了经济效益。有四(4)个人民组织从事产品开发和创新。这些人民组织的目标是创造替代生计收入,从而减少村里的贫困人口。同样,地方政府部门(LGU)和国家政府机构(NGA)也为他们提供了各种机会,以确保食品安全和抗灾能力,以及可持续生计计划(SLP)。根据研究结果,建议 Barangay Mana 在采用和解决经济和沿海环境管理问题时,仍然需要地方和国家办事处的各种支持。
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引用次数: 0
A Study to Evaluate the Effectiveness of Foliar Application of Salicylic Acid against Mosaic Virus Disease in Capsicum annum 评估水杨酸叶面喷施对辣椒马赛克病毒病的效果的研究
Pub Date : 2024-07-25 DOI: 10.9734/ajraf/2024/v10i3301
T. Surekha, Sushma Patil, T. Udayasree
India is the world's leading producer, consumer, and exporter of chilli, a commodity with significant worldwide value. Pests, diseases, and viruses pose serious risks to chillies, resulting in large losses every year. A phenolic derivative that is widely distributed in the kingdom of plants, salicylic acid, is known to regulate a number of physiological and biochemical processes, including thermogenesis, plant signaling or defense, and response to biotic and abiotic stress. Salicylic acid's potential as a plant regulator led to the conduct of this study to ascertain its potentized form's effectiveness in varying potencies in preventing Chilli mosaic virus disease in Capsicum annum plants and improving plant parameters. Four groups were used in the study: Group A, B, C and D were administered for placebo, 6C, 12C, 30C respectively. The parameters analyzed in each group are plant height, number of chillies, weight of the chilli, size of the chilli, number of leaves and total yield. The ANOVA single-factor test was used to statistically assess the obtained data. The variations in plant parameters (plant height, number of chilies, weight of the chilli, size of the chilli, number of leaves, and total yield) amongst the four study groups were, respectively, 148.25, 219.58, 67739.8, 14.48, 75.6, and 6.71. At the 5% level, the computed value of F is 11.55, greater than the table value of F crit 2.77 with degrees of freedom v1 = 5 and v2 = 18. Strong evidence to reject the null hypothesis and accept the research hypothesis is provided by the obtained P value of 0.000041, which is less than 0.01. According to the findings of this study, Salicylic acid is effective in enhancing the parameters of capsicum annuum infected with the Chilli mosaic virus at varying potencies.
印度是世界领先的辣椒生产国、消费国和出口国,辣椒是一种具有重要全球价值的商品。虫害、疾病和病毒对辣椒构成严重威胁,每年都会造成巨大损失。水杨酸是一种广泛分布于植物界的酚类衍生物,可调节多种生理和生化过程,包括产热、植物信号或防御以及对生物和非生物压力的反应。水杨酸作为植物调节剂的潜力促使我们开展了这项研究,以确定不同效力的水杨酸药剂在预防辣椒花叶病毒病和改善植物参数方面的有效性。本研究使用了四个组:A 组、B 组、C 组和 D 组分别使用安慰剂、6C、12C 和 30C。每组的分析参数包括株高、辣椒数量、辣椒重量、辣椒大小、叶片数量和总产量。采用方差分析单因素检验对所得数据进行统计评估。四个研究组的植株参数(株高、辣椒数量、辣椒重量、辣椒大小、叶片数和总产量)的差异分别为 148.25、219.58、67739.8、14.48、75.6 和 6.71。在 5%的水平上,计算的 F 值为 11.55,大于表中自由度 v1 = 5 和 v2 = 18 的 F 临界值 2.77。得出的 P 值为 0.000041,小于 0.01,为拒绝零假设、接受研究假设提供了有力证据。根据这项研究的结果,水杨酸在不同浓度下可有效提高感染辣椒花叶病毒的辣椒的各项指标。
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引用次数: 0
Assessing Good Post-Harvest Practices and Barriers among Cocoa Farmers and Licensed Buying Agents in Southwest, Nigeria 评估尼日利亚西南部可可种植者和特许收购商的收获后良好做法和障碍
Pub Date : 2024-07-23 DOI: 10.9734/ajraf/2024/v10i3300
Abiodun Festus Akinrotimi, Olaniran Anthony Thompson, S. F. Arifalo
This study assesses the post-harvest practices and barriers among cocoa farmers and Licensed Buying Agents (LBAs) in Southwest Nigeria. The research utilizes primary data collected through structured questionnaires distributed to 200 cocoa farmers and 120 LBAs in the region, analyzed using descriptive statistics and Tobit regression analysis. Findings reveal that although there is a high level of awareness of good post-harvest practices among farmers, adoption is hindered by cultural beliefs, labour constraints, and inadequate financial incentives. LBAs face similar challenges, including limited access to information, inadequate infrastructure, and financial constraints. The analysis highlights that education, experience, and access to credit significantly influence the adoption of GPHP among farmers and LBAs, while older age and larger family sizes negatively impact farmers' adoption rates. The study concludes that targeted educational programs and training, improved infrastructure, financial support, strengthened extension services, market stability mechanisms, enhanced regulatory frameworks, and ongoing research and development are essential to improve post-harvest practices in the cocoa sector. These measures will not only enhance the quality and marketability of Nigerian cocoa beans but also contribute to the economic well-being of farmers and the broader community. By addressing the identified barriers and leveraging the influencing factors, the cocoa sector in Southwest Nigeria can achieve significant advancements in post-harvest handling, thereby supporting sustainable development and increasing economic returns.
本研究评估了尼日利亚西南部可可种植农和特许收购商(LBAs)的收获后做法和障碍。研究利用了通过向该地区 200 名可可种植农和 120 名特许收购商发放结构化问卷收集到的原始数据,并使用描述性统计和托比特回归分析进行了分析。研究结果表明,尽管农民对收获后良好做法的认识水平很高,但文化信仰、劳动力限制和经济激励不足阻碍了良好做法的采用。当地农业经营者也面临着类似的挑战,包括获取信息的渠道有限、基础设施不足和资金限制。分析强调,教育、经验和获得信贷的机会对农民和当地农民采用 GPHP 有重大影响,而年龄较大和家庭人口较多则对农民的采用率有负面影响。研究得出结论认为,有针对性的教育计划和培训、改善基础设施、提供财政支持、加强推广服务、建立市场稳定机制、强化监管框架以及不断进行研究和开发,对于改善可可行业收获后的做法至关重要。这些措施不仅将提高尼日利亚可可豆的质量和市场销售能力,还将促进农民和广大社区的经济福祉。通过解决已确定的障碍和利用影响因素,尼日利亚西南部的可可部门可在收获后处理方面取得重大进展,从而支持可持续发展和增加经济收益。
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引用次数: 0
Assessment of Growth Performance and Blood Profile of Rabbit Bucks Fed Moringa oleifera Leaf Meal 评估喂食油麻叶饲料的公兔的生长性能和血液指标
Pub Date : 2024-06-15 DOI: 10.9734/ajraf/2024/v10i2292
Nambeh, A. P., Ahemen, T., O. J., Anongo, T.T., Uza, O.
The study was conducted to assess growth performance and blood profile of rabbit bucks fed dietary inclusion levels of Moringa oleifera leaf meal (MoLM). Thirty (30) rabbit bucks (739.83 to 805.17 g) were balanced for weight and allocated to five groups of 6 rabbits and replicated six times with a buck per replicate in a complete randomized design. Five diets were formulated with incorporation of MoLM at 0.0, 7.5, 15.0, 22.5 and 30.0% and denoted as T1, T2, T3, T4 and T5, respectively. Results on growth performance parameters were not influenced by dietary treatment. Rabbits fed control diet, diets containing 7.5, 15.0 and 22.5% had highest and similar dress weight while those on diet containing 30.0% recorded the least dress weight. Heart weight was highest and similar for rabbit fed control diet, diets containing 7.5, 22.5 and 30.0% while those on diet containing 15.0% had the least heart weight. Rabbits on control diet had highest kidney fats while rabbits on diet containing 7.5 and 30.0% recorded the least and similar kidney fats weight. Bile, left kidney and liver weight were lower for rabbits fed 30.0%. Rabbits fed control diet, diets containing 7.5, 15.0 and 30.0% had highest and similar MCHC while rabbits on diet containing 22.5% recorded the least MCHC. Rabbits on control diet and diet containing 30.0% had the highest) and least lymphocytes, respectively. Rabbits fed control diet, diets containing 7.5 and 15.0% recorded highest and similar neutrophils while rabbits fed diet containing 30.00% had least neutrophils. Rabbits on control diet, diets containing 7.5 and 15.0% had highest and similar albumin while rabbits fed diets containing 22.5 and 30.0% recorded the least and similar albumin. Rabbits on control diet, diets containing 22.5 and 30.0% recorded highest and similar ALP while rabbits on diets containing 7.5 and 15.0% had the least and similar ALP.   It is concluded that inclusion MOLM up to 30% had no adverse effect on their growth performance, blood profile reduced kidney fat and liver weight kidney weight. It is therefore recommended that Moringa oleifera leaf meal can be included in the diets of rabbit bucks intended for breeding purposes up to 30.0%.
本研究旨在评估兔子的生长性能和血液特征。研究人员平衡了三十(30)只公兔(739.83 至 805.17 克)的体重,并将其分配到五组,每组六只,采用完全随机设计法,每个重复六次,每次一只公兔。五种日粮的 MoLM 添加量分别为 0.0%、7.5%、15.0%、22.5% 和 30.0%,分别称为 T1、T2、T3、T4 和 T5。生长性能参数的结果不受日粮处理的影响。饲喂对照日粮、含 7.5%、15.0% 和 22.5%的日粮的兔子的体重最高且相近,而饲喂含 30.0%的日粮的兔子的体重最低。饲喂对照组日粮、含 7.5%、22.5% 和 30.0%日粮的兔子心脏重量最高且相似,而饲喂含 15.0%日粮的兔子心脏重量最低。饲喂对照组日粮的兔子肾脏脂肪含量最高,而饲喂 7.5%和 30.0%日粮的兔子肾脏脂肪含量最低,但重量相近。饲喂 30.0% 日粮的兔子胆汁、左肾和肝脏重量较轻。饲喂对照组日粮、7.5%、15.0%和 30.0%日粮的兔子,其肉中胆固醇含量最高且相近,而饲喂 22.5%日粮的兔子,其肉中胆固醇含量最低。饲喂对照组日粮和含 30.0%日粮的兔子的淋巴细胞分别最高和最低。饲喂对照组日粮、含 7.5%和 15.0%日粮的兔子的中性粒细胞最高和相近,而饲喂含 30.00%日粮的兔子的中性粒细胞最少。饲喂对照组日粮、7.5%和 15.0%日粮的兔子白蛋白最高且相近,而饲喂 22.5%和 30.0%日粮的兔子白蛋白最低且相近。饲喂对照组日粮、22.5% 和 30.0% 日粮的兔子的 ALP 最高且相似,而饲喂 7.5% 和 15.0% 日粮的兔子的 ALP 最低且相似。 结论是,添加 30% 的 MOLM 对兔子的生长性能、血液轮廓、肾脏脂肪和肝脏重量、肾脏重量均无不良影响。因此,建议在以繁殖为目的的公兔日粮中添加不超过 30.0% 的辣木籽叶粉。
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引用次数: 0
An Overview of Trees in Smallholder Farmers' Agricultural Landscapes: A Case Study from Sub-Saharan Africa 小农农业景观中的树木概览:撒哈拉以南非洲案例研究
Pub Date : 2024-06-13 DOI: 10.9734/ajraf/2024/v10i2291
Gilbert Lungu, Chilala Ndeke, Yusuf Umer, Abduletif Abdurahman Mume, Abdi Hassen, Petros Chavula
Many developing countries, especially those in sub-Saharan Africa, have focused on improving agricultural production at the farm level. Governments have implemented agricultural policies and acts to support various initiatives aimed at generating secure and affordable food for low- and middle-income populations. However, these policies can sometimes lead to more homogeneous landscapes, reducing the diversity of accessible food. As global demand for food increases, farmers are expanding their crops and livestock into new areas. Yet, the inclusion of trees in agricultural landscapes is crucial for maintaining diversity. The objective of this study was to synthesize the benefits of incorporating trees in smallholder farming systems in sub-Sahara Africa. Therefore, the study found increasing evidence that trees can enhance welfare among rural farming households, particularly in sub-Sahara Africa. Incorporating trees into agricultural landscapes offers numerous benefits, including improved household nutrition and food security through enhanced crop yields and diversified diets. These practices also support income generation and livelihood diversification, providing farmers with additional sources of revenue. Moreover, trees contribute to environmental benefits and ecosystem services such as soil fertility, water retention, and carbon sequestration, which are crucial for climate change adaptation and resilience. Additionally, integrating trees fosters the preservation of cultural and traditional knowledge, while promoting biodiversity conservation and ecosystem restoration, ultimately creating a more sustainable and resilient agricultural system. Moreover, integrating trees into farming landscapes can help address Sustainable Development Goals (SDGs) 1 and 2—' No Poverty' and 'Zero Hunger'—by increasing crop yields. This study recommends enhanced awareness campaigns for incorporating trees into agricultural landscapes.
许多发展中国家,特别是撒哈拉以南非洲国家,都把重点放在提高农场一级的农业生产上。各国政府实施了农业政策和法案,支持旨在为中低收入人口提供安全和负担得起的粮食的各种举措。然而,这些政策有时会导致地貌更加单一,减少了可获得粮食的多样性。随着全球粮食需求的增加,农民们正在将作物和牲畜扩大到新的地区。然而,将树木纳入农业景观对于保持多样性至关重要。本研究的目的是总结将树木纳入撒哈拉以南非洲小农耕作系统的益处。因此,研究发现越来越多的证据表明,树木可以提高农村农户的福利,尤其是在撒哈拉以南非洲地区。将树木纳入农业景观可带来诸多益处,包括通过提高作物产量和饮食多样化来改善家庭营养和粮食安全。这些做法还有助于创收和生计多样化,为农民提供额外的收入来源。此外,树木还有助于环境效益和生态系统服务,如土壤肥力、保水和碳固存,这对适应气候变化和提高抗灾能力至关重要。此外,植树造林还有助于保护文化和传统知识,同时促进生物多样性保护和生态系统恢复,最终创建一个更具可持续性和复原力的农业系统。此外,将树木融入农业景观有助于通过提高作物产量来实现可持续发展目标(SDGs)1 和 2--"无贫困 "和 "零饥饿"。本研究建议加强宣传活动,将树木纳入农业景观。
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引用次数: 0
Evaluation of Carcass, Growth Performance, Hematological and Biochemical Parameters of Broiler Chickens Fed Additive of Onion Bulb Peel Powder 对添加洋葱球茎皮粉的肉鸡胴体、生长性能、血液学和生化指标的评价
Pub Date : 2024-05-15 DOI: 10.9734/ajraf/2024/v10i2287
O. Alamuoye, Nathaniel Olu Alamuoye, Francis Bosede Adebayo, Victoria Oniyilo
The study evaluated the effect of the powder of onion bulb peel waste (Allium cepa) as feed additives on growth performance, blood profile and carcass features of broiler chickens. A total of 150-day old Arbo acre strains of broiler chicks were randomly allocated into five treatments group with 30 birds in each treatment with three replicates of 10 birds each. The birds were reared on the floor of a pen partitioned into experimental units. The study was conducted in two phases; starter phase (0-28 day) and finisher phase (28-56 day). A basal experimental diet was formulated for the broiler chickens and varying levels of onion bulb peel powder was added as a supplement at 0mg/kg (control), 25mg/kg, 50mg/kg, 75mg/kg and 100mg/kg in diets 1, 2, 3, 4 and 5 respectively. Feed and water were provided ad libitum. The results obtained in this study revealed that there was significant difference (p<0.05) in feed intake, body weight, daily weight gain, feed conversion ratio, hematological and bio-chemical parameters, carcass weight, non-carcass weight, percentage of carcass cut-part relative to the dressed weight and percentage non carcass relative to live weight between treatment diets. Onion bulb peel powder at 100mg/kg enhanced growth performance, reduced total blood cholesterol, triglyceride and low-density lipoprotein, increased the high-density lipoprotein cholesterol and improved carcass yield of the birds. Since the feeding of onion bulb peel powder up to 100mg/kg as feed additives did not constitute nutritional disorder or any adverse effect on heamatological parameters of broiler chickens, it can be concluded that onion bulb peel powder at this level of inclusion is good for broiler chicken production.
该研究评估了洋葱球茎皮废弃物(Allium cepa)粉末作为饲料添加剂对肉鸡生长性能、血液特征和胴体特征的影响。将 150 日龄的 Arbo acre 品系肉用仔鸡随机分配到五个处理组,每个处理组 30 只,三个重复,每个重复 10 只。雏鸡被饲养在一个隔成实验单元的围栏地板上。研究分两个阶段进行:开食期(0-28 天)和育成期(28-56 天)。为肉鸡配制了基础试验日粮,并在日粮 1、2、3、4 和 5 中分别添加 0 毫克/千克(对照组)、25 毫克/千克、50 毫克/千克、75 毫克/千克和 100 毫克/千克的洋葱球茎皮粉作为添加剂。饲料和水自由供给。研究结果表明,不同处理日粮的采食量、体重、日增重、饲料转化率、血液学和生化指标、胴体重、非胴体重、胴体切割部分占胴体重量的百分比和非胴体占活体重的百分比差异显著(p<0.05)。100毫克/千克的洋葱球茎皮粉可提高鸡的生长性能,降低血液中的总胆固醇、甘油三酯和低密度脂蛋白,增加高密度脂蛋白胆固醇,提高胴体产量。由于将洋葱球茎皮粉作为饲料添加剂饲喂至 100 毫克/千克不会造成营养失调,也不会对肉鸡的血液学参数产生任何不利影响,因此可以得出结论,在这一添加量下饲喂洋葱球茎皮粉有利于肉鸡生产。
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引用次数: 0
Apparent and True Digestibility in Clarias gariepinus, Burchell, 1822 FED Soyabean Meal Based Diets Supplemented with Protease 以黄豆粉为基础、添加蛋白酶的饲料对梭子鱼(Burchell,1822 年)的表观消化率和真实消化率的影响
Pub Date : 2024-05-13 DOI: 10.9734/ajraf/2024/v10i2286
J. Oyedokun, O. Ogunwole, I. C. Adene, A. H. Oladele, Yewande Sunday, Kenneth Obosi, Olaolu Olalekan Fawole
Soyabean meal (SBM) could be a suitable replacement for the expensive fishmeal but for its low digestibility in fish. However, protease supplementation could improve digestibility of SBM based diets. Therefore, apparent and true digestibility in Clarias gariepinus fed SBM based diets supplemented with protease were investigated. Six diets containing varied inclusion levels of protease (ppm) in solvent extracted soybean-based diets (SESBD) were formulated; Control (without protease), SS100 (100), SS200 (200), SS300 (300), SS400 (400), SS500 (500). The Clarias gariepinus (n=720) weighing 12.00±0.10g were fed to satiation with the diets for 12 weeks. Each treatment was in triplicate. Protease supplementation significantly (P<0.05) influenced the weight gain of C. gariepinus with the higher value in fish fed SS400 (44.63±3.13) and least value in control diet (32.03±0.65).  FCR had a significantly (P<0.05) least value in C. gariepinus fed SS400 (1.62±0.18) but similar (P>0.05) to C. gariepinus diet SS300 (1.88±0.11). Supplemental protease in soyabean-based diet improved (P<0.05) apparent protein digestibility of C. gariepinus on diet SS400 (87.38±1.10) but similar (P>0.05) to C. gariepinus on diet SS200 (87.29±0.97). Also, true lysine digestibility was enhanced with protease supplementation in soybean-based diet with the higher value in diet SS200 (95.90±0.07). Optimal FCR occurred SESBD of 350ppm dietary inclusion (R2= 0.8147) of protease.  The findings suggest that, protease supplementation in solvent extracted soyabean based diet could improve growth performance and amino acid digestibility in C. gariepinus at 350ppm inclusion level.
大豆粉(SBM)可以替代昂贵的鱼粉,但其在鱼体内的消化率较低。然而,补充蛋白酶可以提高以 SBM 为基础的日粮的消化率。因此,研究人员对以 SBM 为基础、添加蛋白酶的日粮喂养的石斑鱼的表观消化率和真实消化率进行了调查。在溶剂萃取大豆日粮(SESBD)中添加不同含量(ppm)的蛋白酶,配制了六种日粮:对照组(不含蛋白酶)、SS100(100)、SS200(200)、SS300(300)、SS400(400)、SS500(500)。将体重为 12.00±0.10g 的石斑鱼(n=720)用这些日粮喂养 12 周至饱。每个处理一式三份。添加蛋白酶后,SS300(1.88±0.11)明显降低(P0.05)。在大豆日粮中添加蛋白酶可提高(P0.05)大黄蜂对 SS200 日粮的消化率(87.29±0.97)。此外,在大豆日粮中添加蛋白酶可提高真赖氨酸消化率,其中 SS200 日粮的真赖氨酸消化率较高(95.90±0.07)。日粮中添加 350ppm 蛋白酶(R2= 0.8147)时,SESBD 可达到最佳 FCR。 研究结果表明,在溶剂萃取大豆日粮中添加蛋白酶,在添加量为 350ppm 时,可提高大黄鱼的生长性能和氨基酸消化率。
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引用次数: 0
Evolution Analysis of the Land use in the Municipality of Korsimoro, North-Central Burkina Faso: Predictive Modelling for 2050 布基纳法索中北部科西莫罗市土地利用演变分析:2050 年预测模型
Pub Date : 2024-05-04 DOI: 10.9734/ajraf/2024/v10i2285
Ibrahim Ouedraogo, Amadou Zan, Joachim Bonkoungou, I. Yanogo
In the context of the commune of Korsimoro in Burkina Faso, this study looked at the evolution of land use between 1991 and 2021, with projections to 2050. Using satellite data and geospatial processing methods, an analysis of past and projected trends in future land-use scenarios was conducted. The results revealed a significant increase in anthropogenic activities in recent decades, with a 25.69 per cent increase in land dedicated to agriculture and the expansion of urban areas. However, an optimistic outlook for 2050 suggests a regression in anthropogenic activities and an increase in natural areas, with 5.67 per cent increase for wooded savannahs and 78.37 per cent increase for shrub and grassy savannahs, respectively. These findings underscore the importance of rethinking land management policies in order to promote more sustainable development. Sustainable agricultural practices, integrated urban planning and the protection of natural ecosystems appear to be promising avenues for reconciling human needs with environmental preservation.
本研究以布基纳法索科西莫罗镇为背景,考察了 1991 年至 2021 年间土地使用的演变情况,并对 2050 年的情况进行了预测。利用卫星数据和地理空间处理方法,对过去和未来土地利用方案的预测趋势进行了分析。结果显示,近几十年来,人为活动大幅增加,农业用地增加了 25.69%,城市面积也在扩大。然而,对 2050 年的乐观展望表明,人为活动将减少,自然区域将增加,林木稀树草原将增加 5.67%,灌木和草地稀树草原将增加 78.37%。这些发现强调了重新思考土地管理政策以促进更可持续发展的重要性。可持续农业实践、综合城市规划和保护自然生态系统似乎是协调人类需求与环境保护的可行途径。
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引用次数: 0
期刊
Asian Journal of Research in Agriculture and Forestry
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