Commercial Farming Systems Research Articles

Dari Petani Subsisten Ke Ekonomi Pasar

Independent oil palm plantations in the region are extensive compared to other local crop production. Oil palm has become an important plantation product for local communities. Oil palm plantations significantly change the socio-economic and environmental conditions of local communities. Oil palm plantations in the sub-district contribute significantly more to plantation production than other small-scale crops. The purpose of this study was to investigate and analyze the transition of small-scale agriculture to a market economy and to determine the factors driving this change. This research was conducted in Parindu sub-district, considering that oil palm plantations account for 61.33% of the area. This research uses a qualitative descriptive method. Sampling was done using target sampling. Data collection techniques were conducted through observation, in-depth interviews, and documentation. The triangulation technique was used to check the validity of the data. The data analysis method used the Miles and Hubermen analysis model (data reduction, presentation, and review). The informants in this study were independent oil palm farmers. The research found that before the introduction of market-oriented commercial farming systems, the Parindu community practiced subsistence farming, shifting cultivation and rubber plantations, and the results were sufficient to meet the needs of their families. They did not cultivate rubber as their main job, but as a side job in between their work as farmers. The desire to fulfill family needs became a strong foundation for the transformation of the agricultural economy from subsistence farming to the field of product marketing through the market economy. This change affected farmers' lifestyles, which were reflected in their possessions and assets. Property and wealth clearly increase honor and dignity as well as social status.

Expected values for the accuracy of predicted breeding values accounting for genetic differences between reference and target populations

BackgroundGenetic merit, or breeding values as referred to in livestock and crop breeding programs, is one of the keys to the successful selection of animals in commercial farming systems. The developments in statistical methods during the twentieth century and single nucleotide polymorphism (SNP) chip technologies in the twenty-first century have revolutionized agricultural production, by allowing highly accurate predictions of breeding values for selection candidates at a very early age. Nonetheless, for many breeding populations, realized accuracies of predicted breeding values (PBV) remain below the theoretical maximum, even when the reference population is sufficiently large, and SNPs included in the model are in sufficient linkage disequilibrium (LD) with the quantitative trait locus (QTL). This is particularly noticeable over generations, as we observe the so-called erosion of the effects of SNPs due to recombinations, accompanied by the erosion of the accuracy of prediction. While accurately quantifying the erosion at the individual SNP level is a difficult and unresolved task, quantifying the erosion of the accuracy of prediction is a more tractable problem. In this paper, we describe a method that uses the relationship between reference and target populations to calculate expected values for the accuracies of predicted breeding values for non-phenotyped individuals accounting for erosion. The accuracy of the expected values was evaluated through simulations, and a further evaluation was performed on real data.ResultsUsing simulations, we empirically confirmed that our expected values for the accuracy of PBV accounting for erosion were able to correctly determine the prediction accuracy of breeding values for non-phenotyped individuals. When comparing the expected to the realized accuracies of PBV with real data, only one out of the four traits evaluated presented accuracies that were significantly higher than the expected, approaching h2\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\sqrt{{{\ ext{h}}}^{2}}$$\\end{document}.ConclusionsWe defined an index of genetic correlation between reference and target populations, which summarizes the expected overall erosion due to differences in allele frequencies and LD patterns between populations. We used this correlation along with a trait’s heritability to derive expected values for the accuracy (R\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$${\ ext{R}}$$\\end{document}) of PBV accounting for the erosion, and demonstrated that our derived ER|erosion\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$${\ ext{E}}\\left[{\ ext{R}}|{\ ext{erosion}}\\right]$$\\end{document} is a reliable metric.

Commercial Cultivation of Edible Halophytes: The Issue of Oxalates and Potential Mitigation Options

Saline agriculture, including the commercial cultivation of edible halophytes, is expanding rapidly to address the increase in salinised soil due to natural and man-made causes, the decline in availability of fresh water, the increased use of poor-quality water, and increasing food insecurity. Halophytes, as food crops, offer an innovative new opportunity in agriculture, many being highly nutritious and containing bioactive compounds. However, the commercial production of edible halophytes to meet emerging consumer demands faces several challenges. This review examines the market potential for the expansion of edible halophyte crops and the challenges of consumer acceptance and production capacity beyond wild harvest. In addition to beneficial compounds, halophytes are known to contain several anti-nutrient compounds, which can have negative health consequences. In edible halophytes, oxalates are of particular concern. However, research has shown that there are ways to mitigate the accumulation of oxalate through processing, agronomic practice, and genetic engineering. These approaches are presented as potential strategies that can be used in commercial farming systems to reduce the levels of this compound.

The Present Status of the Agriculture Sector Towards Sustainable Development in Sri Lanka: A Review of Existing Policies and Suggestions for Improvements

Agriculture plays a significant role in the national economy, helping to ensure food security and achieve sustainable development in Sri Lanka. This paper presents a review of the present situation of the agriculture sector and suggestions for the improvements needed to achieve sustainable development in Sri Lanka. As per the findings of the study, Sri Lanka had conventional agriculture practices a few decades ago, and agricultural policymakers were introduced to organic agriculture for commercial farming systems a few years ago. In particular, the application of organic agriculture practices has gradually reduced in commercial farming systems recently. This is because certain issues are still prominent in the agriculture sector: yield losses, lower ability to share the latest information and experiences of organic agriculture, lower responsiveness of hybrid seeds in organic farming, unavailability of properly directed organic agricultural regulations and national standards, post-harvest losses during long distance transportation, limited research and development, higher prices of organic products, higher input costs, higher susceptibility to pests and diseases, and a shortage of organic inputs, etc. As a result, the majority of agricultural authorities have introduced GAP farming practices for farmers. GAP is important to address the issues of food safety, trade, and sustainability. In addition to that, it also helps to reduce the unregulated use of agrochemicals, and avoid adverse climate change impacts or any negative externality that threatens the overall agriculture production, people's health, and the environment, thereby challenging the sustainability of the sector. Thus, pick-up orders at stations, usage of proper storage facilities to avoid post-harvest losses during long-distance transportation, formulating and implementing regulations for the development of the export market of GAP products, organising extension programs and training to disseminate the latest information to enhance farmers' adoption to GAP farming, encouraging field experts to gain international training opportunities, introducing proper control mechanisms to protect the local market, conducting research and development activities, and enhancing links between GAP farmers and other supply chain components to maintain a strong certification system for their products may lead to achieving sustainable agriculture development in Sri Lanka.

Learning from adversity: Small-scale commercial farming in Nepal amidst COVID-19 pandemic

The COVID-19 pandemic has exposed various shortcomings in Nepal’s small-scale commercial farming system. Farmers who were transitioning from subsistence to a market-dependent model faced significant challenges during the pandemic. This has raised concerns about the well-being of these farmers, the sustainability of their farming practices, and their capacity to withstand future shocks. Our paper aims to assess the current resilience of small commercial farmers and identify factors that can enhance their ability to weather external disruptions like COVID-19. We use the case study in Ravi Opi, a farming village located in Dhulikhel Municipality, Nepal to explore the challenges experienced by the small commercial farmers during the pandemic and the strategic responses adopted at the household and institutional levels. Our analysis reveals that the small-scale commercial farming system demonstrated ‘buffering capabilities’ and ‘adaptability,’ but not ‘transformability.’ This is primarily because farmers adopted short-term responses that are necessary for addressing immediate crises, rather than responses that would facilitate longer-term transformation. We argue that there is a lack of adequate state support for farmers in Nepal, which worsened during the pandemic. As a result, farmers resorted to leveraging their community connections for help, which provided short-term relief, and aided in addressing only immediate but not their long-term needs. Our observations underscore the risks associated with the current approach used by subsistence farmers to transition into commercial farming. Based on our findings, we propose that longer-term initiatives involving the government and other stakeholders are essential to strengthen the supply network and promote community-based agriculture extension services. We posit that these initiatives can potentially enhance farmers’ resilience and their ability to withstand future disruptions, such as the COVID-19 pandemic.

Identification and Characterization of Mercury Contamination in Vegetables and Herbs Cultivated on a Commercial Vertical Indoor Farming System with Light-Emitting Diode Lighting: Unveiling an Unusual Food Safety Risk of Some Improperly Manufactured High-Density Agricultural Production Systems.

Artificial grow lights, such as light-emitting diodes (LEDs) and fluorescent grow lights, are commonly used in modern day indoor farming, citing advantages in energy efficiency and a higher controlled environment. However, the use of LEDs poses a risk in mercury contaminations as a result of its production process, specifically LEDs with polyurethane encapsulates that were traditionally produced using mercury resins as a catalyst. A total of 10.0 ppm of mercury was detected in a curly kale sample harvested from an indoor hydroponic vegetable farm, exceeding Singapore Food Regulation's limit of 0.05 ppm. Vegetables, farming inputs, and surface swabs from the affected farm were analyzed using wet acid digestion followed by cold vapor atomic absorption spectroscopy analysis. The investigation found high concentrations of mercury in the LED encapsulant, and the encapsulant material was identified to be polyurethane by Fourier transform infrared spectroscopy and pyrolysis-gas chromatography-mass spectrometry analysis, indicating the source of mercury contamination to be the LED polyurethane encapsulant.

The development strategy of subsistent or semi commercial maize farming system

Subsistent/semi commercial farmers were very slow to adopt the new technology of maize cultivation, although the new introduction technology could be done by farmers, economies and compatible with farmer’s socio-culture. Generally, that was caused introduction technology need high inputs (i.e. superior seed maize varieties, fertilizer, and pesticides), and other sides orientation of maize cultivation by subsistent/semi commercial farmers for food security, farmers limited money to bought inputs, and inputs shop in sub district/village levels was nothing. The consequence was introduction of new technology could not extend and farmers back to existing technology after character building had finished. The research was conducted on 3 (three) farmer’s group and planted area 15 hectares of maize in South Timor Tengah district, East Nusa Tenggara province in 2017-2018. The research showed the problems could be overcome by guiding of new technology to farmers/farmer’s group among 1-2 times planting and building of new institutional i.e. clinic of technology on village level. Extension workers and group of farmer’s group (GAPOKTAN) manage clinic of technology. The clinic function was to inform new agricultural information to farmers/farmer’s group and be responsibility to supplying of inputs. To guarantee the continuity maize farming system, farmers need loan assistance with semi grand system. Farmers/farmers group borrow inputs from the clinic of technology and it refund by maize product after harvesting. The clinic of technology did maize processing and sold maize in early rainy season. The clinic of technology built maize seed industry unit in village level and bought inputs (fertilizer and pesticides Farmer’s household lack of food, although improving of technology cultivation in ENT province had done) from agricultural shop on district/province level. This strategy could guarantee sustainability maize farming system and potential to develop in other village.

Uncovering changes in microbiome profiles across commercial and backyard poultry farming systems.

The microbiome profiles of poultry production systems significantly impact bird health, welfare, and the environment. This study investigated the influence of broiler-rearing systems on the microbiome composition of commercial and backyard chicken farms and their environment over time. Understanding these effects is vital for optimizing animal growth, enhancing welfare, and addressing human and environmental health implications. We collected and analyzed various samples from commercial and backyard farms, revealing significant differences in microbial diversity measurements between the two systems. Backyard farms exhibited higher alpha diversity measurements in soil and water samples, while commercial farms showed higher values for litter and feeder samples. The differences in microbial diversity were also reflected in the relative abundance of various microbial taxa. In backyard farms, Proteobacteria levels increased over time, while Firmicutes levels decreased. Campilobacterota, including the major poultry foodborne pathogen Campylobacter, increased over time in commercial farm environments. Furthermore, Bacteroides, associated with improved growth performance in chickens, were more abundant in backyard farms. Conversely, pathogenic Acinetobacter was significantly higher in backyard chicken fecal and feeder swab samples. The presence of Brevibacterium and Brachybacterium, associated with low-performing broiler flocks, was significantly higher in commercial farm samples. The observed differences in microbial composition and diversity suggest that farm management practices and environmental conditions significantly affect poultry health and welfare and have potential implications for human and environmental health. Understanding these relationships can inform targeted interventions to optimize poultry production, improve animal welfare, and mitigate foodborne pathogens and antimicrobial resistance risks. IMPORTANCE The microbiome of poultry production systems has garnered significant attention due to its implications on bird health, welfare, and overall performance. The present study investigates the impact of different broiler-rearing systems, namely, commercial (conventional) and backyard (non-conventional), on the microbiome profiles of chickens and their environment over time. Understanding the influence of these systems on microbiome composition is a critical aspect of the One-Health concept, which emphasizes the interconnectedness of animal, human, and environmental health. Our findings demonstrate that the type of broiler production system significantly affects both the birds and their environment, with distinct microbial communities associated with each system. This study reveals the presence of specific microbial taxa that differ in abundance between commercial and backyard poultry farms, providing valuable insights into the management practices that may alter the microbiome in these settings. Furthermore, the dynamic changes in microbial composition over time observed in our study highlight the complex interplay between the poultry gut microbiome, environmental factors, and production systems. By identifying the key microbial players and their fluctuations in commercial and backyard broiler production systems, this research offers a foundation for developing targeted strategies to optimize bird health and welfare while minimizing the potential risks to human and environmental health. The results contribute to a growing body of knowledge in the field of poultry microbiome research and have the potential to guide future improvements in poultry production practices that promote a sustainable and healthy balance between the birds, their environment, and the microbial communities they host.

Acaricide resistance of Rhipicephalus (Boophilus) decoloratus (Acari: Ixodidae) on commercial farms in South Africa: filling a gap in historical data

In South Africa, acaricides are widely used for tick control but very few reports are available on resistance development of Rhipicephalus (Boophilus) decoloratus Koch to chemical control on commercial farming systems in Africa, south of the Sahara. Resistance to different acaricide classes reported over the years was mostly from localised communal farming systems. This report addresses the lack of available information on resistance development by reviewing results found during a National Tick Resistance Survey carried out from 1998 to 2001, laying the foundation for more recent research on resistance development, and the evolution of resistance over the years. One hundred and eighty R. decoloratus populations were randomly collected from commercial farming systems, covering most of the provinces of South Africa. Larval immersion tests were used to determine phenotypic resistance for each tick population and 6.6% of the populations tested were found to be resistant to amitraz, 35.5% to cypermethrin, and 36.1% to chlorfenvinphos. Multi-resistance to all three acaricides was found in 1.2% of populations and a further 25.8% of the populations were resistant to two acaricides. The detection of resistance of Rhipicephalus (Boophilus) species to currently used or new acaricides is an essential tool in resistance management. The acaricides tested for the resistance of R. decoloratus during the survey are currently still in use in South Africa and these historical results, never published before, can be valuable and can act as reference data to determine the evolution of resistance development to acaricides in more recent studies.

Soil Microbiomes Associated with a Novel Perennial Grain Cultivated under Temperate Agricultural Conditions.

A perennial wheatgrass called Kernza perennial grains was developed by the Land Institute to harness the benefits of perenniality on soil health in a commercial farming system. This study compared bacterial and fungal soil microbiomes surrounding 1-year-old Kernza, 4-year-old Kernza, and 6-week-old winter wheat in Hudson Valley, New York.

Pathogenicity and Genomic Characterization of a Novel Genospecies, Bacillus shihchuchen, of the Bacillus cereus Group Isolated from Chinese Softshell Turtle (Pelodiscus sinensis).

The Chinese softshell turtle (CST; Pelodiscus sinensis) is a freshwater aquaculture species of substantial economic importance that is commercially farmed across Asia, particularly in Taiwan. Although diseases caused by the Bacillus cereus group (Bcg) pose a major threat to commercial CST farming systems, information regarding its pathogenicity and genome remains limited. Here, we investigated the pathogenicity of Bcg strains isolated in a previous study and performed whole-genome sequencing. Pathogenicity analysis indicated that QF108-045 isolated from CSTs caused the highest mortality rate, and whole-genome sequencing revealed that it was an independent group distinct from other known Bcg genospecies. The average nucleotide identity compared to other known Bcg genospecies was below 95%, suggesting that QF108-045 belongs to a new genospecies, which we named Bacillus shihchuchen. Furthermore, genes annotation revealed the presence of anthrax toxins, such as edema factor and protective antigen, in QF108-045. Therefore, the biovar anthracis was assigned, and the full name of QF108-045 was Bacillus shihchuchen biovar anthracis. In addition to possessing multiple drug-resistant genes, QF108-045 demonstrated resistance to various types of antibiotics, including penicillins (amoxicillin and ampicillin), cephalosporins (ceftifour, cephalexin, and cephazolin), and polypeptides, such as vancomycin.

Effect of weaning system on lamb growth, mammary gland development and ewe milk production in dairy sheep managed in an outdoor pasture-based commercial farming system

The objective was to merge science and practice to determine the feasibility of a mixed suckling and milking system compared with a traditional exclusive suckling management system on the production performance of dairy sheep and their progeny in an outdoor pasture-based farming system at commercial scale. At 14 d postpartum, twin- and triplet-bearing mixed-age East Friesian ewes were randomly allocated to either a mixed system of once-a-day milking,suckling and early weaning (MS, n=61) or control with exclusive suckling and later weaning (Ctrl, n=57) using a randomised block design. MS lambs had lower live weight at weaning (14.6 vs. 16.7 kg; P<0.001) but 3-5weeks post-weaning average daily gain and mammary gland mass was similar between groups. Ewe lamb mammary mass was positively associated with post-weaning but not pre-weaning live weight gain (P<0.01). Weaning system influenced the percentage of protein, total solids and fat (MS > Ctrl) while milk yield, somatic cell count and lactose levels were not different. This study highlighted that the MS comparedwith Ctrl system had no negative effects on dam or progeny performance.

Sexual differentiation and sex reversal in tilapia (Oreochromis niloticus) by hormone 17 α methyltestosterone similar to that used in cultivation systems

The hormone 17 α methyltestosterone (MT) is commonly used in the farming of tilapia, which is a gonochoristic species, for the obtainment of a male mono-sex population to avoid reproduction during grow-out and due to the fact that males present greater growth, making cultivation commercially more lucrative. Larvae were collected and experimentally received MT in the feed for 30 days in a similar way as that performed in commercial farming. Physiological events of sexual differentiation and the moment in which sex reversal promoted by MT occurred were documented with the use of histological and morphometric methods. On the first day of receiving feed with MT, the fish presented gonads with undifferentiated germ cells. On the 12th day of exogenous feeding with and without MT, sexual differentiation of the gonads was observed morphologically, demonstrated by the formation of the ovarian cavity in females. Males continued to have undifferentiated gonads for a longer period. Sex reversal occurred in all females treated with MT at 25 days after the onset of exogenous feeding. The results indicate that treatment for sex reversal used in commercial farming systems could be shorter than that customarily employed, diminishing the quantity of synthetic hormone released into the environment and reducing the harmful effects of MT on other aquatic organisms. Therefore, the data suggest the possibility of reducing the use of hormone MT by 5 days.

Agronomical Practices and Management for Commercial Cultivation of Portulaca oleracea as a Crop: A Review.

Soil is an essential resource, and its degradation is challenging modern agriculture, while its impact is expected to increase in the near future. One of the strategies to address this issue is to incorporate new alternative crops able to tolerate arduous conditions, as well as for the use of sustainable agricultural practices in order to recover and/or improve soil health. Additionally, the increasing market for new functional/healthy natural foods promotes the search for potential alternative crop species with promising bioactive compounds content. For this purpose, wild edible plants are a key option because they have already been consumed for hundreds of years in traditional gastronomy and there is well-established evidence of their health-promoting effects. Moreover, since they are not a cultivated species, they are able to grow under natural conditions without human intervention. Among them, common purslane is an interesting wild edible species and a good candidate for integration in commercial farming systems. With worldwide spread, it is able to tolerate drought, salinity and heat stress and is already used in traditional dishes, while it is highly appreciated for its high nutritional value due to its bioactive compound content, especially omega-3 fatty acids. In this review, we aim to present the breeding and cultivation practices of purslane, as well as the effects of abiotic stressors on yield and chemical composition of the edible parts. Finally, we present information that helps to optimize purslane cultivation and facilitate its management in degraded soils for their exploitation in the existing farming systems.

The Impact of African Swine Fever (ASF) on Romanian Pig Meat Production: A Review

Abstract The first outbreak of African Swine Fever (ASF) in Romania was recorded in a backyard holding in Satu Mare County in July 2017 as a result of a previous large-scale spread of the virus in wild boars and domestic pig populations in two of Romania’s neighbouring countries, Ukraine and the Republic of Moldova. Since then, more than 1.3 million domestic pigs have been infected in more than 5600 backyard holdings and commercial farms all over Romania where stamping out procedures have been performed afterwards. The spread of the disease could not be contained despite the contingency plans developed by the authorities based on the current EU and Romanian legislation, and currently, the entire territory of Romania is considered to be affected, leading to a significant decline of the pig inventory and major damages in the commercial farming system. Consequently, the amounts of pork imported from other EU member states have increased yearly, pig meat becoming the main commodity on the list of agricultural goods purchased by Romania. 2021 has been by far the worst year for Romanian pig meat production, generating the highest financial losses mainly due to the inability of authorities and policymakers to implement effective and efficient disease control measures.

Access to Veterinary Drugs in Sub-Saharan Africa: Roadblocks and Current Solutions.

BackgroundAccess to veterinary drugs for livestock has become a major issue over the last decade. Analysis has tended to focus on the demand for these products, while studies looking at the drivers behind their use generally focus on farmer behavior and interactions between veterinarians and farmers. However, the use of drugs also depends on structural factors that determine the functioning of the drug supply chain and farmers' access to the drugs. This article presents an overview of the factors that limit access to veterinary drugs in sub-Saharan Africa (SSA) as well as the international policy tools and arrangements that claim to improve it.MethodsWe have conducted a scoping review of the scientific and grey literature as well as the publicly-available data from both the animal health industry and international organizations. We aimed to gather information on the veterinary drugs market in SSA as well as on the international norms, recommendations, guidelines, and initiatives that impact SSA farmers' access to these drugs.FindingsWe highlight numerous barriers to veterinary drug access in SSA. The SSA market is highly dependent on imports, yet the region attracts little attention from the international companies capable of exporting to it. It suffers from a high level of fragmentation and weak distribution infrastructures and services, and is driven by the multiplication of private non-professional actors playing a growing role in the veterinary drug supply chain. The distribution system is increasingly dualized, with on the one hand the public sector (supported by development organizations) supplying small scale farmers in rural areas, but with limited and irregular means; and on the other side a private sector largely unregulated which supplies commercial and industrial farming systems. Different innovations have been developed at the international and regional levels to try to reduce barriers, such as homogenizing national legislations, donations, and vaccine banks. Alongside decades-old inter-state cooperation, many new forms of public-private partnerships and other hybrid forums continue to emerge, signaling the private sector's increasing influence in global governance.ConclusionsPolicies on animal health would be bolstered by a better understanding of the drivers behind and the components of access to veterinary drugs in different regional and national contexts. Inequalities in drug access need to be addressed and a market-driven approach adopted in order to strengthen our understanding of what determines veterinary drug use at the farm level. Policies should balance the interests of the various stakeholders, being careful not to reinforce bias toward certain diseases deemed “interesting” and neglect others that could prove to be highly important for veterinary public health.

Categorisation of Antimicrobial Use in Fijian Livestock Production Systems.

Antimicrobial resistance (AMR) is a major global threat to human and animal health. The use of antimicrobials in the livestock sector is considered to contribute to AMR. Therefore, a reduction in and prudent use of antimicrobials in livestock production systems have been advocated. This cross-sectional survey aimed to investigate the extent of imprudent antimicrobial use (AMU) and to determine whether the AMU practice was affected by either the farming system or species of farmed livestock in the largest island (Viti Levu) of Fiji. A total of 276 livestock enterprises were surveyed and antimicrobials were used on 309 occasions over 90 days. Overall, in 298 of 309 (96%) incidents, antimicrobials were used imprudently, comprising antibiotics, 160 of 170 (94%) and anthelmintics, 138 of 139 (99%). Prudent use of antibiotics was associated with commercial farming systems (X2 = 13, p = 0.001), but no association was observed with anthelmintic use (p > 0.05). Imprudent antibiotic use was associated with dairy (OR = 7.6, CI = 1.41, 41.57, p = 0.018) followed by layer and beef (p > 0.05) compared to broiler enterprises. Imprudent AMU was more common in the backyard and semi-commercial enterprises compared to commercial broiler enterprises. Policies promoting the prudent use of antimicrobials in Fiji should focus on smaller livestock production systems and enterprises.

Exploring farmers' adaptation strategies to water shortage under climate change in the Tunisian semi-arid region.

This study explores the adaptation strategies to water shortage at the farm level in the Tunisian semi-arid region and investigates factors determining the farmers' behavior. In this area, climate change exacerbates the scarcity of water resources, groundwater suffers from saline intrusion, and the reinforcement of surface water depends on the water transfer decision. Based on 81 farmers survey data collected in Diar El Hajjaj irrigated area, the typology of farmers was constructed using the multivariate technique combining the clustering method and principal component analysis.The results show that two groups of the surveyed farmers use more intensive water resources to grow high-value crops and operate toward a commercial farming system. They set up either an accommodating or an expansive plan. The remaining sampled farmers are smallholder farmers who endure critical resource constraints. They tend to adopt a contractive strategy and face a real risk of farming abandonment. Additional actions should be taken at the farm level as well at the national policy level to preserve the farming system under water scarcity due to climate change effects.

The gut microbiota of chickens in a commercial farm treated with a Salmonella phage cocktail

The microbiota in broiler chicken intestines affects the animals’ health, metabolism, and immunity both positively and negatively. Accordingly, it has a significant impact on animal productivity. Phages, host-specific parasites of bacterial cells, are a promising antimicrobial alternative that selectively target pathogens without disturbing the microbiota. The purpose of this study is to further characterize the commensal microbial community at production scale in broiler chickens treated with a Salmonella phage treatment. We evaluated the cecal microbiota of broilers reared in a commercial farming system where a phage cocktail against Salmonella, SalmoFree was supplied to animals. To do so, two field trials were conducted, incorporating three doses of phages in the broilers’ drinking water. Our results showed that the core microbiome (taxa that were present in more than 50% of samples) contained species that are key to microbiota adaptation in the last stage of the production cycle. Among these, there are some important degraders of complex polysaccharides and producers of short chain fatty acids (SCFA) such as Eisenbergiella and Lachnoclostridium. The phage cocktail did not affect the normal development of the microbiota’s structure. The addition of the phage cocktail resulted in a significant reduction in Campylobacter and an increase in Butyricimonas, Helicobacter and Rikenellaceae, which are common inhabitants in chicken gut with known negative and positive effects on their health and metabolism. Altogether, we consider that these results contribute valuable information to the implementation of large-scale phage therapy technologies.

Sustainability of Rearing System Using Multicriteria Analysis: Application in Commercial Poultry Production.

Simple SummaryOrganic poultry production is growing annually in Europe and USA. The main objective of the organic rearing system is to improve animal welfare, environmental impact and human welfare. All of these aspects are part of the "One Welfare" approach, which also includes food security, sustainability, the reduction of human suffering and improvements in the productivity of farms by applying high welfare standards. However, “One Welfare” is still a theoretical concept; it is important to determine practical applications for this concept in order to evaluate the production system in its entirety. This study, for the first time, applies the One Welfare approach in commercial poultry production by developing a specific a multicriteria model. This model was used to compare three different rearing systems, considering all their inputs and outputs simultaneously.The aim of the present study was to develop a multicriteria model for the comparison of three commercial poultry farms: organic with Ross 308 genotype (OR), organic with Naked Neck genotype (ONN) and a conventional system (C), which represents the most common commercial farming system. A model based on multicriteria decision analysis was developed, considering for the first time the One Welfare approach in an operational manner, including three dimensions: human, environmental and animal welfare. The three alternatives demonstrated different performances, according to the different dimensions considered. In particular, the two organic systems performed better for human welfare and animal welfare, with relevant differences due to the genetic strains used. Conventional rearing performed better for the environment index due to the method chosen. The multicriteria analysis showed that the organic system performed better overall than the conventional system. In particular, the use of an adapted Slow Growing (SG) strain positively affected the final rank, mainly by reducing welfare problems and producing good economic and social performance. The stability of the results was verified by performing a sensitivity analysis, specifically a weight stability analysis, which confirmed the strength of results.