Open Journal of Agricultural Research https://www.scipublications.com/journal/index.php/ojar <p><strong><em>Open Journal of Agricultural Research</em></strong> is an international journal dedicated to the advancements in agriculture throughout the world. The goal of this journal is to provide a platform for scientists, students, academics and engineers all over the world to promote, share, and discuss various new issues and developments in different areas of agricultural sciences.</p> en-US journal@scipublications.com (Robert Williams) journal@scipublications.com (Robert Williams) Sat, 29 Jan 2022 03:45:28 +0000 OJS 3.3.0.2 http://blogs.law.harvard.edu/tech/rss 60 Study for Some Body Weight and Egg Traits in Domyati and Khaki-Campbell Ducks https://www.scipublications.com/journal/index.php/ojar/article/view/260 <p>The duck industry makes an important contribution to the availability of animal protein sources in Egypt, little known about the genetic parameters, particularly the heritability and genetic correlations of body weight and egg production in ducks. Body weight is the most essential feature for genetic improvement due to its ease of selection, high heredity, and large impact on meat production costs. The target of this study was to evaluate and explain genetic parameters such as the heritability, the genetic and phenotypic correlations, and sire breeding value in Domyati (local) and Khaki-Campbell (foreign) ducks in order to improve body weight and egg traits. A total of 160 (80 Domyati and 80 Khaki-Campbell ducks utilized to measure body weight at 16 and 20 weeks g), as well as 7000 eggs (2500 Domyati and 4500 Khaki-Campbell) to measure egg traits (the egg number, egg weight, and egg mass are all measured throughout the first 90 days of laying). In Domyati and Khaki-Campbell ducks, the heritability estimated for body weight was moderate to high, ranged from 0.35 to 0.40, and 0.21 to 0.30 for egg production. The genetic correlations among body weight and egg traits were all positive and had high values, also among BW16 and BW20 were stronger (0.90); (0.99). So the genetic improvement in BW16 could be followed by an increase in BW20 weeks. It concluded that, the relatively high value of genetic heritability for body weights and egg traits in Domyati and Khaki-Campbell ducks, indicates that it is possible to genetically increase body weight and egg traits through selection and subsequently inbreeding to divide the herd into groups that are selected among themselves to keep their sons.</p> Amira S. El-Deghadi, Wael A. H. Ali, M. G. Gharib Copyright (c) 2022 Open Journal of Agricultural Research https://www.scipublications.com/journal/index.php/ojar/article/view/260 Mon, 09 May 2022 00:00:00 +0000 Floristic Composition and Structure in the Undergrowth of Agroforests in Neems in the Far North Region (Cameroon) https://www.scipublications.com/journal/index.php/ojar/article/view/154 <p>This study took place in the Far North region of Cameroon. The general objective was to assess the floristic diversity of the undergrowth of Agrosystems in <em>Azadirachta indica</em>. The data were collected in 100 m long by 20 m wide transects surveyed in plantations of different ages. In total, 5 transects were carried out, ie a total area of 1 ha per site. The sampling bands were established using the compass, decameter, GPS and wires. The experimental set-up used was a 5-repetition split plot. A total of 7689 individuals divided into 9 families, 13 genera and 16 species have been identified. <em>Guiera senegalensis</em> and <em>Piliostigma thonningii</em> are the most common in terms of relative abundance. The analysis of the Family Importance Index (VIF) shows overall that the Combretaceae, and Mimosaceae are the most important in ecological terms. While those of the species show that <em>Guiera senegalensis</em>, <em>Combretum micranthum</em> and <em>Acacia nilotica</em> finally for the genera, it is Acacia, Guiera and Combretum which contains the most important ecological indices. The overall density of species within the plots varies between 129 and 105 ind / ha. The basal area varies from 2.02 to 3.88 m² / ha. The Importance Value Index (IVI) is of the order of 300 in the different plots. The floristic diversity of the undergrowth of Agrosystems (average ISH&gt; 2) shows homogeneity and an even distribution between the different plots. Plots with similarity indices of less than 50% do not meet floristic affinity while similarity indices are high in plots with floristic affinities greater than or equal to 50%. The diameter structure showed a predominance of young individuals. This information drawn from the conclusion of the present study shows that they constitute an important argumentation of the advantages so that the services of agricultural development should be interested in the conservation and valuation of such an agroforestry system for the protection of the environment against the climate change mitigation and sustainable development of local communities.</p> NOUMI VALERY NOIHA, PIERRE MARIE MAPONGMETSEM Copyright (c) 2022 Open Journal of Agricultural Research https://www.scipublications.com/journal/index.php/ojar/article/view/154 Fri, 25 Mar 2022 00:00:00 +0000 Effect of Rainfall on Yield Related Traits and Total Carotenoids Contents of 42 Accessions of Provitamin A Cassava at Two Cropping Seasons in Ibadan https://www.scipublications.com/journal/index.php/ojar/article/view/314 <p>Cassava crop improvement is a function of selecting superior genotypes that meets the end-users needs and preference. This is done via genotype testing at different environments thereby subjecting the materials to the elements of climate and other environmental factors. In pro-vitamin a cassava genotypes, dry matter (DM), total carotenoids (TC), and fresh root yield (FYLD) are important traits for improving economic status, nutritional health and livelihoods of farmers and processors. This study evaluated the effect of rainfall patterns on 42 provitamin A Cassava accessions for FYLD, DM, TC at different months (6,9&amp;12 months after planting) and for two seasons (2019/2020 and 2020/2021) in Ibadan. The study shows that the relationship between TC and FYLD were more variable at second season than in the first season. The relationships between TC &amp; DM and FYLD &amp; DM at both seasons showed similar variability. The rainfall pattern shows that higher rainfall trend was noticed at the first cropping season (2019/2020) than 2020/2021 cropping seasons. At different months categories and across cropping season, rainfall recorded the least value of 4.58mm at 6 Months After Planting (MAP) which was in the month of December, increased at 9 MAP (Mar) and all through the 12 MAP (107.05mm). Traits relationship with rainfall shows that yield increased with rainfall, DM (25.70%) was highest during the months of least rainfall (4.58mm) and decreased (16.40%) as rainfall (52.09mm) starts during the 9 MAP and at 12 MAP, when the rainfall was 107mm, the DM was 18.76%. Total carotenoids were highest at 6 MAP with 13.76 µg/g when the rainfall was least and decreased (13.04 µg/g) with increased rainfall. During the first cropping season, DM and TC were higher with higher rainfall but with reduced fresh root yield while at second season, when the rainfall was lower, fresh root yield was higher.</p> Olusegun David Badewa, Elizabeth Parkes, Eli Kolo Tsado, Andrew Saba Gana, Kehinde Dele Tolorunse, Patrick Akpotuzor, Peter Iluebbey, Toye Ayankanmi Copyright (c) 2022 Open Journal of Agricultural Research https://www.scipublications.com/journal/index.php/ojar/article/view/314 Fri, 01 Jul 2022 00:00:00 +0000 COVID-19 and the Non-Repayment of Agricultural Loans in West Cameroon: A major Challenge for the Small Farmer in an Individual Loan Situation https://www.scipublications.com/journal/index.php/ojar/article/view/181 <p>This study raises the problem of the non-repayment of agricultural credits by producers who are members of the Community Growth Mutual (MC<sup>2</sup>), in this period of COVID-19. It questions the economic mores in force in most member countries of the Organization for the Harmonization of Business Law in Africa (OHADA), where credit has become difficult for small rural farmers; And refers to the theory of the vicious circle of poverty, which advocates an indispensable recourse to foreign capital in the event of financial breakdown, as a means of increasing capital. Since the capital of rural producers remains insufficient and their possibility of reinvestment decreases, then becomes zero because of agricultural credit. To understand the factors of the non-repayment of these credits, data were collected from 100 agro-sylvo-pastoral producers of the Bayangam group (West-Cameroon) of both sexes, aged at least 18 years, having obtained an unpaid credit from the MC<sup>2</sup> since 2019, and a manager of this microfinance institution. After analysis, it appears that beyond overproduction and anti-COVID-19 measures that lead to the missale or fall in prices on the market, the conditions of access to credit, the non-possession of acceptable guarantees, the misuse of the object of credit and the practice of financial cavalry by the borrower, as well as the rigidity of the procedures for prosecuting debtors significantly explain this non-repayment. It is associated with determinants such as age, level of education, marital status, type of agricultural activity of the debtor. Hence the need for flexibility of microfinance institutions vis-à-vis rural agro-sylvo-pastoral producers, who are severely affected by the economic shock of the COVID-19.</p> Yannick Tamo Fogue, Ibrahim Manu Copyright (c) 2022 Open Journal of Agricultural Research https://www.scipublications.com/journal/index.php/ojar/article/view/181 Sat, 29 Jan 2022 00:00:00 +0000