Commercial Farms Research Articles

Commercial Agriculture and Youth Poultry Egg Farmers’ Efficiency in Nigeria

Low egg production is one of the many factors that challenge the growth of the Nigerian poultry industry and particular attention has not been paid to youth involvement in commercial poultry egg production. Using data from 181 sampled farmers, this study used Propensity Score Matching (PSM) to investigate whether the impact of the concluded Commercial Agriculture Development Project was sustainable, even three years after its closure in Nigeria. Farmers who participated in the project recorded 7.6%-21.0% increases in profit and a slight (0.1%-0.7%) decrease in technical efficiency. Comparing determinants of profitability between youth and non-youth farmers, show that price per crate and egg production quantity recorded more positive effects on the profitability of youth farmers while feed price had a more negative effect on the profitability of non-youth farmers. On the determinants of Technical Efficiency (TE) between youth and non-youth farmers, although years of education decreased the TE of both groups, the effect was greater among youth farmers, while egg production was significant and positive for both groups, the effect was greater for non-youth farmers. Also, the number of birds, feed quantity, and price per crate had negative effects on TE for youth farmers only, while years of experience although negative was significant for only the non-youth group. Overall, youth farmers recorded more significant positive effects on profit than non-youth farmers and less significant positive effects on TE. Overall, our results suggest scaling-up or expanding commercial agriculture interventions to farmers, especially youth. Our finding further highlights the need for training/capacity-building and extension services for youth farmers as this will bridge the gaps of inexperience that are contributory to TE of non-youth farmers.

A semi-quantitative risk model for dairy farms to pinpoint and break source-pathway connections between nutrient sources and open drainage channel sections

IntroductionOn intensive grassland dairy farms in high rainfall areas with poorly drained soils, networks of open drainage channels linked to in-field drainage systems are needed to enable farm operations. Nitrogen and phosphorus point and diffuse sources may be connected to this open drainage channel network along surface and subsurface pathways, with negative impacts upon delivery to the downstream aquatic system.MethodsThis study developed a semi-quantitative risk assessment model by: (1) selecting parameters (categorical or continuous) representing the nutrient transfer continuum and (2) scoring (relative magnitude and impact) the risk of nutrient source connectivity and delivery for every open drainage channel section across seven dairy farms.Results and DiscussionA Risk Index Classification System consisting of low, medium, high, or very high-risk class was developed, with high or above requiring a mitigation plan. Results showed that 23%, 68%, 9% and 0% of all open drainage channels on study farms were identified as low, moderate, high and very high-risk, respectively. A range from 2% to 25% per farm of the open drainage channels was classified as high-risk that potentially needed mitigation, although none was identified as very high-risk. Two-thirds of the high-risk open drainage channels were connected to the farmyards, with potential for high nutrient loss from point sources. A combined approach of source management and targeted breaking of the pathway (e.g., in-channel filters, water diversion bars) may help minimise nutrient losses from high risk open drainage channels on poorly draining soils.

Retention of Crop Residue Increases Crop Productivity and Maintains Positive Sulfur Balance in Intensive Rice-Based Cropping Systems

Retention of Crop Residue Increases Crop Productivity and Maintains Positive Sulfur Balance in Intensive Rice-Based Cropping Systems

Conflict between Fulani herders and village landowners in Ghana: capitalism, climate change, and peasant struggles

In discussions of the capitalism–climate change interplay in the agrarian world, the intrusiveness of corporate and state-guided capitalism has been pre-eminent. This ‘hard capital’ focus obscures indirect linkages like how ‘soft capital’, although disoriented from raping nature, unlike the former, exacerbates climate change effects in ways that accelerate the destabilisation of agrarian economies. This indirect connection is evident in agrarian settings in Ghana’s Northern Region, where the resultant peasants’ revolt is directed at neither corporations nor the state but rather local landowning elites (soft capital), who transfer the burden of the twin pressures of climate change and hard capital (state intervention and privatisation of fertiliser supply) to their labourers. Using Marxian social relations of production as a theoretical lens, this paper unpacks how this capitalism–climate change interface plays out in Gushiegu, Northern Ghana. By highlighting that interface and the resultant agrarian struggles, this paper does two things: (1) invites agrarian scholars to transcend the commercialisation of agriculture and carbon capitalism in analysing how the intersection of capitalism and climate change destabilises the agrarian world; (2) encourages scholarship that transcends the more obvious herder–farmer conflicts over land and water in examining the destabilising effects of the aforementioned intersection.

Omission in Adoption: Whole of Systems Approach Applied to Case Study Analysis of Genetically Modifi ed (GM) Maize Adoption in Eastern Cape Province South Africa

This article critically explores the political economy of genetically modifi ed (GM) maize adoption in South Africa, focusing on its impact on smallholder farmers using the whole-of-systems approach. While South Africa has become a leader in GM maize production, the benefi ts have been unevenly distributed, particularly disadvantaging smallholders. Government eff orts to integrate smallholders into the GM maize value chain have faced signifi cant challenges, including structural inequalities, high input costs, inadequate infrastructure, and limited access to education and resources. The article analyzes the broader political, economic, and environmental contexts, revealing how global trade policies, foreign investments, and domestic regulatory frameworks infl uence smallholder integration into the global maize value chain. A case study of the Eastern Cape province underscores the additional challenges smallholders face, such as climate change, labor shortages, and barriers to market access. Despite GM maize’s potential to improve food security and smallholder incomes, the article argues that current policies and institutional frameworks need substantial reforms to ensure equitable benefi ts. The research highlights the need for a multidimensional approach that addresses the socioeconomic, political, and environmental factors constraining smallholder participation in the GM maize sector, calling for targeted interventions to bridge the gap between large-scale commercial farms and smallholders.

Organized labour migration of residents of Lithuania to the USSR in the sixth–ninth decades of the 20th century

Referring to archive and historiographic materials, in this paper problematics of labour migration to the USSR from Lithuania in 1953-1984 is analysed. Attention is drawn to migration directions, motivation of residents, quantitative indices, territorial aspects related to persons participating in labour migration process and social picture. Residents of Lithuania became participants of the campaign for organized all Soviet Union-wide labour force migration to participate in implementation of large and important land, forestry and industry projects. By the way, the residents of our Republic joined this campaign later than residents from other Republics – in 1953 only. Organized labour force migration from Lithuania to the USSR was of lower level that it had been planned in Moscow. The main directions of labour force migration were: 1) agriculture intensification program (virgin lands campaigns in Kazakhstan and Russia); 2) Russian forestry development program; 3) program of construction of gigantic transport and industrial objects in Russia (Siberia, etc.); 4) the “Third Semester” program – season-based works of students in industry and agriculture sectors of Russia, Kyrgyzstan, Uzbekistan and other Soviet Republics. In 6th-9th decades of the 20th century, about 75 thousand residents of Lithuanian Soviet Socialist Republic were sent to work in other regions of the Soviet Union; labour migrants worked on industrial objects, farms and forestry units. Mostly, they were men from urban areas, by ethnic composition – Russians and Lithuanians. The most intensive time period of sending to work as labour migrants was the 1953-1965 period, as at that time in Kazakhstan and Russia huge programs of economic development had been implemented (virgin lands campaign, forestry development). Namely during this period, over 80 per cent of residents of Lithuania who participated in this campaign were sent to labour destinations. Although in later years the migration campaign covered entire Lithuania, its scale diminished markedly. Due to certain national traits of Lithuanians (sedentary life, attachment to the land) and social-economic situation in the Lithuanian Soviet Socialist Republic (fast and intensive industry development ensuring quite good wages, well-developed social infrastructure, etc.), the residents of Lithuania liked to conclude short-term employment agreements, and after termination of these agreements made efforts to return to Lithuania and stay there not attracted by labour migration campaign anymore.

Mapping and modeling of water erosion in the Revubué river Sub-Basin, Moatize, Mozambique

This study investigated water erosion in the Revubué River Sub-Basin, Moatize, Mozambique, utilizing advanced mapping and modeling techniques. Through detailed land use surveys and application of the Potential Erosion Model (EPM), we identified areas with moderate to severe erosion rates (φ = 0.54), particularly in zones of intensive agriculture (15% of the study area) and mining (1% of the study area). The results highlighted the influence of undulating topography (average slope of 9%) and intensive agricultural practices on erosion rates (0 – 25 ton/ha). Urgent implementation of soil conservation practices, such as contour plowing and terracing, was recommended to mitigate soil loss, improve agricultural productivity, and promote environmental sustainability. Agricultural sustainability was emphasized, focusing on investments in sustainable agricultural practices to preserve long-term soil health. Raising awareness among farmers about the impacts of soil erosion and implementing effective management practices were considered crucial. Extension services were recognized as key agents in disseminating knowledge for promoting eco-friendly agricultural practices.

Impact of organic and conventional farming practices on the multidimensional characteristics of flour and indirectly on bread

The demand for organic and locally sourced products is on the rise. This study investigates the impact of farming practices (organic versus conventional) on the microbiological, microscopic, and physical-chemical properties of 'Caaveiro' flour, alongside the physical-chemical, instrumental texture parameters, and sensory attributes of breads, using two fermentation methods (sourdough versus mixed leavening). 'Caaveiro' flour and bread, recognized under the Protected Geographical Indication ‘Galician Bread’, were employed as a case study. Organic flours exhibited higher counts of aerobic plate microorganisms, yeasts, and molds, yet these levels posed no health risks. Overall, farming practices demonstrated negligible influence on the evaluated flour and bread characteristics. Instead, fermentation method emerged as the predominant factor shaping bread attributes. Consequently, promoting organic production could help maintain the distinctive qualities of traditional breads under Protected Geographical Indications.

“Liquid assets”: Coastal wetlands, regional parks, and the protection of Mediterranean deltas

After a century of accelerating drainage, in the 1960s coastal wetlands became the object of unprecedented protection campaigns around the world. This paper compares the history of three successful cases of coastal wetland protection in the Mediterranean between the 1960s and 1980s: the Rhône (France), Po (Italy), and Ebro (Spain) River deltas. As most of the coast of Mediterranean Europe, these three cases were at the center of renewed redevelopment attempts, to further expand intensive agriculture, industry, and seaside tourism, which invariably involved wetlands drainage. In these three cases, protection was achieved by establishing “regional parks” in the deltas. We argue that it was not by chance. Wetland advocates at the international, national, and local scales coated their plea for protection in the language of economics, making the case for wetlands’ value as “liquid assets.” They argued that wetland protection could rhyme with development and, abandoning initial projects to protect deltas as national parks, focused their efforts on creating regional parks instead. Stemming from the European regional planning movement, the regional park framework proved expedient to combine development expectations and wetland protection. Thanks to modular land use zoning, it promised to combine productive activities with protected areas, without imposing uniform restrictions on the entire deltas such as those often associated with national parks. The history of these three coastal parks, therefore, sheds light on the counterintuitive but strong relationship existing between coastal development and protection by uncovering the discursive strategies and unlikely coalitions that made conservation possible.

Phosphorus fertilization promotes carbon cycling and negatively affects microbial carbon use efficiency in agricultural soils: Laboratory incubation experiments

Soil organic carbon (SOC) loss from intensive agriculture represents a major global concern. Consequently, strategies to improve soil management to mitigate or abate SOC losses and enhance carbon (C) sequestration are urgently needed. Nutrient availability, especially nitrogen (N) and phosphorus (P), regulates soil C cycling and storage. While N effects are well studied, less is known about how soil P status and different fertilizer types affects SOC dynamics. This laboratory incubation assessed how two common P fertilizers, diammonium phosphate (DAP) and single superphosphate (SSP), affected microbial activity and C immobilization in the zone of soil directly around the fertilizer granule (prillosphere) across three contrasting agricultural soils (Inceptisol, Vertisol, Alfisol). Soils were amended with DAP or SSP granules and C turnover assessed with 14C-labeled glycine, malic acid or glucose, alongside unfertilized controls. After three weeks, soil pH, electrical conductivity (EC), Olsen-P and microbial C use efficiency (CUE) were measured. DAP increased pH in the Inceptisol (acidic soil), while SSP decreased pH in all soils. Both fertilizers increased EC and Olsen-P, but SSP enhanced Olsen-P more than DAP. Cumulative 14CO2 emissions were 19–20 % higher with P fertilizers compared to the control, with DAP stimulating faster initial C mineralization rates than SSP, except in the Alfisol. P addition reduced microbial CUE by 23–34 % across all soils and substrates versus the unfertilized control. We ascribe this reduction in CUE to an alleviation of nutrient limitation or a fertilizer-induced osmotic stress. The co-addition of N either in DAP or glycine did not alter the P-induced CUE response suggesting that P was more important than N in regulating microbial CUE in these soils. We conclude that P fertilization increased short-term C turnover and may lead to reduced C storage in soil, however, further long-term (>1 year) research is needed to identify optimum P management strategies to minimize C losses in agricultural soils.

The role of landscape context in shaping bat assemblages in African cacao plantations

Cacao production is mostly concentrated in Africa, with this continent exporting an impressive 68.4 % of the world's cacao. The increasing demand for cacao from the Global North has already led to massive deforestation in Ghana and Ivory Coast and cacao-driven deforestation is likely to continue changing landscapes in Sub-Saharan Africa. Bats are affected by these landscape changes due to their dependence on multiple resources spread at a large spatial scale. Although bats can save cacao farmers millions of euros through pest suppression, no study has investigated how landscape context affects bat communities in African cacao plantations. Here for the first time, we studied how abundance and richness of insectivorous, frugivorous and nectarivorous bats within cacao landscapes could be affected by cover type and the distance between these habitats and each cacao plantation. We sampled bats using mist-nets in 38 cacao plantations spread throughout southern Cameroon from 2017 to 2020. We found that guilds responded differently to the distance and amount of cover of each of the land cover types, with the scale of response being habitat-dependent. Overall, insectivorous bats were associated positively with high cover of natural habitats (e.g., tree cover, rangeland, and flooded vegetation), and negatively with nearby anthropogenic disturbance (e.g., logging and intensive agriculture). Frugivorous and nectarivorous bats were associated to the presence of natural habitats with water and of nearby anthropogenic habitats (e.g., human settlements, community forests and unpaved roads), probably due to the presence of more fruiting and flowering trees. Considering the associations found between the landscape metrics and bats, we propose three different conceptual designs to manage cacao landscapes: one for insectivores, one for frugivores/nectarivores and a third design that maximises the trade-offs between these three guilds. By safeguarding the diversity of these three guilds farmers can maintain pest suppression services within their plantations and guarantee healthy and long-lasting sustainable cacao landscapes through bats' pollination and seed dispersal.

Tomato dry farming as an agroecological model for California’s drought resilient future: Farmers’ perspectives and experiences

Small, diversified farms on California’s Central Coast have been dry farming for decades, allowing farmers to use water stored in soils from winter rains to grow tomatoes and other vegetables with little-to-no irrigation in summers without rainfall. As recent water shortages in California have forced a reckoning with the precariousness of the state’s water supply, policy groups and the general public have become increasingly interested in dry farming as a promising means of achieving water conservation goals. Academic research on this practice, however, has been scarce. Amid growing urgency to develop low-water agricultural systems in the state, we interviewed 10 Central Coast dry farmers, representing over half of the commercial dry farm operations in the region where this practice was developed, to collaboratively answer 2 central research questions: (1) What business and land stewardship practices characterize successful tomato dry farming on California’s Central Coast? (2) What is the potential for dry farming to expand beyond its current adoption while maintaining its identity as a diversified practice that benefits small-scale operations? We summarize farmers’ wisdom into 9 themes about current dry farm practice, its potential for expansion and future opportunities. We also synthesize farmer-stated environmental constraints on dry farm feasibility into a map of suitable areas in California. As we consider how dry farming might expand to new areas and operations, we highlight dry farming’s history as an agroecological alternative to industrial farming in the region and the need for careful policy planning to maintain that identity. In examining this California Central Coast dry farming system, we ask if and how it can enhance the viability of nonindustrial farming operations as the food system adapts to less water availability. Because policies that encourage dry farm expansion could change economic landscapes in which dry farming operates, we caution that well-intentioned policies could edge small growers out of dry farm markets if not carefully designed. At the same time, we emphasize the opportunity for dry farm tomato systems to model an agroecological transition toward water savings in California.

The impact of plant cryoextract on productivity and factors of innate immunity of pond fish against the background of stress in the experiment

The search for effective and environmentally friendly means to increase the productivity and natural resistance of animals, especially in aquaculture, remains an urgent socio-economic task. This article presents the results of the study of the effect of the cryobiological supplement ‘Immunolife-Fish’, based on medicinal plants, on the weight gain of juvenile common carp (Cyprinus carpio) and indicators of innate immunity of two-year-old common carp (Cyprinus carpio) and silver carp (Hypophthalmichthys molitrix) under the influence of thermal stress factor in aquarium conditions. It was found that the weight gain of juvenile carp treated with the cryobiological supplement ‘Immunolife-Fish’ was higher than that of the control group at all stages of the study. The increase was most pronounced during the first 42 days of feeding. A significant increase in the number of leukocytes was found in the blood of fish (common carp and silver carp) exposed to a heat stressor compared to control values. In fish that received a supplement of the herbal preparation during stress, this indicator only tended to increase. The effect of the stressor in fish of both species is manifested by a significant increase in the leukocyte content, a decrease in the indicators characterizing the functional state of cellular immunity — phagocytic activity and number of phagocytes, as well as a tendency to decrease the phagocytic index of neutrophils in the blood. The use of the cryobiological supplement ‘Immunolife-Fish’ in fish exposed to stress not only prevented the decrease in the phagocytic activity of neutrophils but also contributed to a slight increase in their activity in comparison with the control. A significant decrease in the activity of lysozyme and the level of circulating immune complexes, as well as an increase in the content of seromucoids, was found in the blood serum of common and silver carp under the influence of the stress factor. The use of the drug against the background of stress leveled the negative changes in the above indicators characterizing the state of the humoral link of innate immunity. In addition, a mild immune stimulating effect of the cryobiological supplement on fish of both species, which were kept in optimal conditions, was noted. The research is aimed at the development and testing of organic, environmentally friendly anti-stress and immunostimulant agents in commercial fish farming

Prevalence, antimicrobial resistance and genomic comparison of non-typhoidal salmonella isolated from pig farms with different levels of intensification in Yangon Region, Myanmar

In Myanmar, where backyard, semi-intensive, and intensive pig (Sus scrofa domesticus) farming coexist, there is limited understanding of the zoonotic risks and antimicrobial resistance (AMR) associated with these farming practices. This study was conducted to investigate the prevalence, AMR and genomic features of Salmonella in pig farms in the Yangon region and the impact of farm intensification to provide evidence to support risk-based future management approaches. Twenty-three farms with different production scales were sampled for two periods with three sampling-visit each. Antimicrobial susceptibility tests and whole-genome sequencing were performed on the isolates. The prevalence of Salmonella was 44.5% in samples collected from backyard farms, followed by intensive (39.5%) and semi-intensive farms (19.5%). The prevalence of multi-drug resistant isolates from intensive farms (45/84, 53.6%) was higher than those from backyard (32/171, 18.7%) and semi-intensive farms (25/161, 15.5%). Among 28 different serovars identified, S. Weltevreden (40; 14.5%), S. Kentucky (38; 13.8%), S. Stanley (35, 12.7%), S. Typhimurium (22; 8.0%) and S. Brancaster (20; 7.3%) were the most prevalent serovars and accounted for 56.3% of the genome sequenced strains. The diversity of Salmonella serovars was highest in semi-intensive and backyard farms (21 and 19 different serovars, respectively). The high prevalence of globally emerging S. Kentucky ST198 was detected on backyard farms. The invasive-infection linked typhoid-toxin gene (cdtB) was found in the backyard farm isolated S. Typhimurium, relatively enriched in virulence and AMR genes, presented an important target for future surveillance. While intensification, in terms of semi-intensive versus backyard production, maybe a mitigator for zoonotic risk through a lower prevalence of Salmonella, intensive production appears to enhance AMR-associated risks. Therefore, it remains crucial to closely monitor the AMR and virulence potential of this pathogen at all scales of production. The results underscored the complex relationship between intensification of animal production and the prevalence, diversity and AMR of Salmonella from pig farms in Myanmar.

A survey of cranberry fruit rots in commercial production beds in Oregon and Washington.

Fungal fruit rots are a perennial threat to the production of cranberries. Eleven genera of fungi have been reported to cause cranberry rot in the field and/or during cold storage. Oregon and Washington rank fourth and fifth in the production of cranberries in the USA, but much of the research on cranberry fruit rots has been conducted in Wisconsin, New Jersey, and Massachusetts. The primary objective of this project was to describe the current composition of cranberry fruit rot complex in Oregon and Washington. A survey of fungal fruit rot pathogens was conducted over four years in commercial cranberry farms located in the Pacific Ocean coastal zone in Oregon and Washington. Yield, rot incidence, and fungal pathogens isolated varied year-to-year. Pathogens isolated frequently from field-rotted cranberries included the cranberry fruit rot genera described in other cranberry production regions of the USA, such as Colletotrichum, Coleophoma, and Physalospora. Neofabraea actinidiae, a recently described cranberry fruit rot, was isolated consistently from field-rotted cranberries from beds with specific fungicide usage patterns. N. actinidiae also was one of the more common storage rot pathogens in this region, alongside other well-established storage rots like Coleophoma and black rots caused by Allantophomopsis cytisporea, A. lycopodina, and Strasseria geniculata. These findings may have important implications for Washington cranberry production because a large proportion of the crop is dry-harvested, placed in cold storage, and then sold as fresh cranberries. Climatic differences among the cranberry production areas across the United States may affect the disease incidence and prevalence of different genera of cranberry fruit rot pathogens, as summer months in Oregon and Washington are often much cooler and dryer than in Wisconsin and east coast states and may account for differing presence of various cranberry fruit rot fungi.

Review of the Highly Pathogenic Avian Influenza in Argentina in 2023: Chronicle of Its Emergence and Control in Poultry.

Highly pathogenic avian influenza (HPAI) is a highly contagious viral disease that represents a significant threat to poultry production worldwide. Variants of the HPAI virus (HPAIV) H5A/Goose/GuangDong/1/96 (H5 Gs/GD/96) lineage have caused five intercontinental epizootic waves, with the most recent, clade 2.3.4.4b, reaching Argentina in February 2023. Initially detected in wild birds, the virus quickly spread to backyard and commercial poultry farms, leading to economic losses, including the loss of influenza-free status (IFS). By March/April 2023 the epidemic had peaked and vaccination was seriously considered. However, the success of strict stamping-out measures dissuaded the National Animal Health Authority (SENASA) from authorizing any vaccine. Suspected cases sharply declined by May, and the last detection in commercial poultry was reported in June. The effective control and potential eradication of HPAIV in Argentina were due to SENASA's early detection and rapid response, supported by private companies, veterinarians, and other stakeholders. Stamping-out measures have been effective for virus elimination and reduced farm-to-farm transmission; however, as the virus of this clade may remain present in wild birds, the risk of reintroduction into poultry production is high. Therefore, maintaining continuous active surveillance will be crucial for promptly detecting any new HPAIV incursion and taking appropriate action to contain virus dissemination.

Live black soldier fly larvae as environmental enrichment for native chickens: implications for bird performance, welfare, and excreta microbiota

Dietary live insect larvae were recently proposed for use in laying hens and broiler−intensive chicken farming as an innovative form of environmental enrichment, but their use in native dual-purpose chickens has never been investigated. This study aims to evaluate the effects of live black soldier fly (BSF) larvae as environmental enrichment in two autochthonous dual-purpose chicken breeds, namely Bionda Piemontese (BP) and Bianca di Saluzzo (BS), in terms of bird performance, behaviour, integument status, excreta corticosterone metabolites (ECMs), and microbiota analyses. A total of 90 BP and 90 BS hens aged 308 days old were randomly distributed between two treatment groups (three replicates/group/breed, 15 hens/replicate). For the following 90 days, the control group (C) was fed a commercial feed only, whereas the BSF group was fed the commercial diet plus BSF live larvae calculated at 6% of the expected daily feed intake (DFI). Larva ingestion time, bird performance, integument scores, and behavioural observations were assessed at regular intervals, and excreta samples were collected to evaluate ECM and microbiota. The larva ingestion time became faster over the course of the experimental trial (P < 0.001). The DFI of BSF-fed hens was lower than that of C hens independently of breed (P < 0.001), whereas only in the BS hens, the live weight of the BSF-fed group was greater than that of the C group (P < 0.01). The BSF-fed BP hens showed a higher laying rate and feed conversion ratio compared with BSF-BS (P < 0.05). Better total integument scores were observed in BSF-fed BP hens compared with C-birds (P < 0.05). The BSF-fed hens displayed higher frequencies of preening, trotting, and wing flapping than C, as well as a lower incidence of severe feather pecking (P < 0.05). An increase in allopreening was only identified in BSF-fed BS hens with respect to the C hens (P < 0.001). No differences in ECM and faecal microbiota were observed between treatment groups. In conclusion, the administration of BSF live larvae as environmental enrichment has the potential to positively influence the welfare of both BP and BS chickens, by enhancing the frequency of positive behaviours whilst reducing severe feather pecking, without affecting their excreta microbiota. BSF larva administration also has the potential to improve the productive performance and the plumage status of the BP breed.

Determinants of household livelihood diversification in the uplands: The case of cassava production areas in central highlands of Vietnam

ABSTRACT The livelihoods of upland communities in Vietnam are rapidly transforming due to socio-economic and environmental changes. As a result, livelihood diversification has emerged as an adaptive strategy to these pressures, while agricultural commercialization demands greater production specialization. This study explored livelihood and crop diversification in the central highlands using survey data from 364 households and 22 in-depth interviews. The Simpson Diversity Index and Herfindahl-Hirschman Indexe were used to measure diversification levels, and regression analysis identified key determinants. Findings revealed moderate-low livelihood diversification toward non-farm activities and moderate-high crop diversification, with a trend toward industrial cassava specialization. Household-head age, education, perception of climate risks, and transportation accessibility were key factors influencing livelihood diversification. The study recommends policies to enhance young laborers’ capacity in agriculture and promote the development of non-farm livelihood activities, leveraging local resources for sustainable upland development.

Establishing defined daily and course doses for antimicrobials used in Pakistani broilers to enable farm-level quantification and comparison of antimicrobial use

Monitoring antimicrobial use (AMU) is crucial, as it plays a key role in driving antimicrobial resistance (AMR). Animals account for a significant share of AMU, making it essential to accurately quantify AMU exposure at the species, farm, and country levels. In Pakistan, prophylactic use of antimicrobials remains common alongside therapeutic use. This study aimed to establish defined daily and course doses for both therapeutic and prophylactic use of antimicrobials in commercial broiler production in Pakistan. A list of antimicrobial products was compiled from the daily treatment records from 100 commercial broiler farms in Punjab, Pakistan. For each active substance (AS), a defined daily dose (DDDvetPK) was assigned for treatment, prevention or both, by averaging the recommended doses of all similar AS with the same administration route. A defined course dose (DCDvetPK) was calculated by multiplying the average recommended dose by the average treatment duration for each AS, based on the Summary of Product Characteristics (SmPC). A total of 41 AS, categorized into 17 antimicrobial classes, were identified from 139 antimicrobial products. The most frequently reported AS were colistin (polymyxins) at 15.9 %, amoxicillin (aminopenicillins) at 7.5 %, neomycin (aminoglycosides) at 7.3 %, enrofloxacin (fluoroquinolones) at 6.7 %, and tylosin (macrolides) at 6.4 % of the total treatments (n = 358) reported at farms. Notably, 51 % of AS were classified as critically important for human medicine by WHO. Among AS indicated for treatment in SmPC, the defined daily doses for Pakistan (DDDvetPK) varied substantially from the European Medicines Agency (EMA) values (DDDvet), with the top deviations being Tiamulin (+147.8 %), Sulfadimidine_TMP (+111.2 %), Flumequine (+88.6 %), Spiramycin (-87.8 %), and Tylosin (-84.3 %). This study presents a list of defined daily doses and defined course doses for AMU quantification in Pakistani broilers using dose-based indicators. The observed differences between Pakistani and EMA doses, and lack of EMA doses for preventive antimicrobials, suggest using Pakistani DDDvetPK values to quantify antimicrobial usage in Pakistan. A huge variation in recommended doses was reported in SmPC. There is an urgent need to establish a list of approved veterinary antimicrobials used in Pakistan, along with harmonization in recommended doses and maintenance of standardized SmPC by the drug regulatory authorities. Setting up a national-level list of defined daily doses is crucial to accurately monitor and quantify AMU.

Applying double cropping and interactive irrigation in the North China Plain using WRF4.5

Abstract. Irrigated cultivation exerts a significant influence on the local climate and the hydrological cycle. The North China Plain (NCP) is known for its intricate agricultural system, marked by expansive cropland, high productivity, compact rotation, a semi-arid climate, and intensive irrigation practices. As a result, there has been considerable attention on the potential impact of this intensive irrigated agriculture on the local climate. However, studying the irrigation impact in this region has been challenging due to the lack of an accurate simulation of crop phenology and irrigation practices within the climate model. By incorporating double cropping with interactive irrigation, our study extends the capabilities of the Weather Research Forecast (WRF) model, which has previously demonstrated commendable performance in simulating single-cropping scenarios. This allows for two-way feedback between irrigated crops and climate, further enabling the inclusion of irrigation feedback from both ground and vegetation perspectives. The improved crop modeling system shows significant enhancement in capturing vegetation and irrigation patterns, which is evidenced by its ability to identify crop stages, estimate field biomass, predict crop yield, and project monthly leaf area index. The improved simulation of large-scale irrigated crops in the NCP can further enhance our understanding of the intricate relationship between agricultural development and climate change.