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Salami SA, Taylor-Pickard J, Ross SA, Moran CA. A Meta-Analysis of the Effects of Dietary Yeast Mannan-Rich Fraction on Broiler Performance and the Implication for Greenhouse Gas Emissions from Chicken Production. Animals (Basel) 2024; 14:1595. [PMID: 38891642 PMCID: PMC11171374 DOI: 10.3390/ani14111595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/16/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
Dietary supplementation of yeast-derived mannan-rich fraction (MRF) could improve the gastrointestinal health and production efficiency of broilers, and, consequently, lower the environmental impacts of chicken production. The objective of this meta-analysis was to quantify the retrospective effects of feeding MRF (Actigen®, Alltech Inc., Nicholasville, KY) on the production performance of broilers. The meta-analysis database included 27 studies and consisted of 66 comparisons of MRF-supplemented diets vs. basal (i.e., negative control) and antibiotic-supplemented (i.e., positive control) diets. A total of 34,596 broilers were involved in the comparisons and the average final age of the birds was 35 days. Additionally, the impact of feeding MRF on the carbon footprint (feed and total emission intensities) of chicken production was evaluated using the meta-analysis results of broiler performance (MRF vs. basal diets) to develop a scenario simulation that was analyzed by a life cycle assessment (LCA) model. A database of all trials (MRF vs. basal and antibiotic diets) indicated that feeding MRF increased (p < 0.01) average daily feed intake (ADFI; +3.7%), final body weight (FBW; +3.5%), and average daily gain (ADG; 4.1%) and improved (p < 0.01) feed conversion ratio (FCR; -1.7%) without affecting (p > 0.05) mortality. A subdatabase of MRF vs. basal diets indicated that dietary MRF increased ADFI (+4.5%), FBW (+4.7%), and ADG (+6.3%) and improved FCR (-2.2%) and mortality (-21.1%). For the subdatabase of MRF vs. antibiotic diets, both treatments exhibited equivalent effects (p > 0.05) on broiler performance parameters, suggesting that MRF could be an effective alternative to in-feed antibiotics. Subgroup analysis revealed that different study factors (year of study, breed/strain, production challenges, and MRF feeding duration) influenced the effect of dietary MRF on broiler performance. Simulated life cycle analysis (LCA) indicated that feeding MRF decreased feed and total emission intensities, on average, by -2.4% and -2.1%, respectively. In conclusion, these results demonstrate that dietary MRF is an effective nutritional solution for improving broiler performance, an effective alternative to in-feed antibiotic growth promoters, and reduces the environmental impact of poultry meat production.
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Affiliation(s)
- Saheed A. Salami
- Alltech Biotechnology Centre, Summerhill Road, A86 X006 Dunboyne, Ireland;
| | - Jules Taylor-Pickard
- Solutions Deployment Team, Alltech (UK) Ltd., Ryhall Road, Stamford PE9 1TZ, UK;
| | | | - Colm A. Moran
- Regulatory Affairs Department, Alltech SARL, Rue Charles Amand, 14500 Vire, France
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Mramba RP, Mwantambo PA. The impact of management practices on the disease and mortality rates of broilers and layers kept by small-scale farmers in Dodoma urban district, Tanzania. Heliyon 2024; 10:e29624. [PMID: 38655291 PMCID: PMC11035043 DOI: 10.1016/j.heliyon.2024.e29624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/25/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024] Open
Abstract
The demand for chicken products in Tanzania has increased due to population growth and rising incomes. As a result, the production of broilers and layers has been promoted to fill the gap due to their high productivity. However, exotic breeds of chicken are susceptible to diseases, thus requiring good disease management practices. The current study aimed to increase production of exotic breeds of chicken in the Dodoma region, which is growing rapidly, by identifying management factors associated with disease and chicken mortality. One hundred and four households that keep broilers or layers were selected randomly from the Dodoma urban district. The households were interviewed to gather information about chicken diseases, mortality, and management practices. The proportion of sick and dead chickens per farm was determined and used in beta regression to test its association with management practices and chicken breed. The proportion of sick chickens in a flock was low when stocking density was low and in large households, but it was higher when the farmer lacked knowledge of disease management. Further, mortality rates were high when farmers lacked disease knowledge and cleaning frequency was low, and low when farmers had extensive experience in chicken production. Improvement of extension services and education programmes for poultry farmers on good disease management practices is necessary to increase the production of layers and broilers in the region.
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Rahmani A, Ahmed Laloui H, Kara R, Dems MA, Cherb N, Klikha A, Blake DP. The financial cost of coccidiosis in Algerian chicken production: a major challenge for the poultry sector. Avian Pathol 2024:1-12. [PMID: 38529824 DOI: 10.1080/03079457.2024.2336091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/25/2024] [Indexed: 03/27/2024]
Abstract
Coccidiosis, caused by parasites of the genus Eimeria, is a significant economic burden to the poultry industry. In this study, we conducted a comprehensive analysis to evaluate the financial losses associated with Eimeria infection in chickens in Algeria, relying on data provided by key stakeholders in the Algerian poultry industry to assess sub-clinical as well as clinical impact. We employed the updated 2020 version of a model established to estimate the cost of coccidiosis in chickens, taking into consideration specific cultural and technical aspects of poultry farming in Algeria. The findings predict economic losses due to coccidiosis in chickens of approximately £86.7 million in Algeria for the year 2022, representing £0.30 per chicken raised. The majority of the cost was attributed to morbidity (74.9%), emphasizing the substantial economic impact of reduced productivity including decreased bodyweight gain and increased feed conversion ratio. Costs associated with control measures made up 20.5% of the total calculated cost, with 4.6% of the cost related to mortality. These figures provide a clear indication of the scope and economic impact of Eimeria infection of chickens in Algeria, illustrating the impact of practices common across North Africa. They underscore the ongoing requirement for effective preventive and control measures to reduce these financial losses while improving productivity and welfare, ensuring the economic sustainability of the Algerian poultry industry.
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Affiliation(s)
- Abderrahmen Rahmani
- Animal Production Team, Biotechnology and Agriculture Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | - Hamza Ahmed Laloui
- Animal Production Team, Biotechnology and Agriculture Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | | | - Mohamed Abdesselem Dems
- Bio-informatics and Bio-statistics Unit (BIBS-U); Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | - Nora Cherb
- Environment Biotechnology Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
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4
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Salgado Pardo JI, González Ariza A, Navas González FJ, León Jurado JM, Díaz Ruiz E, Delgado Bermejo JV, Camacho Vallejo ME. Discriminant canonical analysis as a tool for genotype traceability testing based on turkey meat and carcass traits. Front Vet Sci 2024; 11:1326519. [PMID: 38425837 PMCID: PMC10902079 DOI: 10.3389/fvets.2024.1326519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
The present study aims to develop a statistical tool for turkey breed traceability testing based on meat and carcass quality characteristics. To this end, a comprehensive meta-analysis was performed, collecting data from a total of 75 studies approaching meat and carcass attributes of 37 turkey strains and landraces since the late 1960s. A total of 22 meat and carcass traits were considered variables, grouped in the following clusters: carcass dressing traits, muscle fiber properties, pH, colorimetry, water-capacity traits, texture-related attributes, and nutritional composition of the meat. Once the multicollinearity analysis allowed the deletion of redundant variables, cold carcass weight, slaughter weight, muscle fiber diameter, sex-female, carcass/piece weight, meat redness, ashes, pH24, meat lightness, moisture, fat, and water-holding capacity showed explanatory properties in the discriminating analysis (p < 0.05). In addition, strong positive and negative correlations were found among those variables studied. Carcass traits were positively associated, particularly slaughter weight and cold carcass weight (+0.561). Among meat physical traits, pH showed positive correlations with drip loss (+0.490) and pH24 (+0.327), and water-holding capacity was positively associated with cholesterol (+0.434) and negatively associated with collagen (-0.398). According to nutritional traits, fat and ash showed a strong correlation (+0.595), and both were negatively associated with moisture (-0.375 and -0.498, respectively). Strong negative correlations were found as well between meat protein and fat (-0.460) and between collagen and cholesterol (-0.654). Finally, the Mahalanobis distance suggested a clustering pattern based on meat and carcass characteristics that report information about interbreeding and variety proximity. This study establishes a departure point in the development of a tool for breed traceability guaranteeing aimed at enhancing distinguished, local breed-based turkey meat.
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Affiliation(s)
| | - Antonio González Ariza
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, Córdoba, Spain
- Agropecuary Provincial Centre, Diputación Provincial de Córdoba, Córdoba, Spain
| | | | | | - Esther Díaz Ruiz
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, Córdoba, Spain
| | | | - María Esperanza Camacho Vallejo
- Department of Agriculture and Ecological Husbandry, Area of Agriculture and Environment, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Alameda del Obispo, Córdoba, Spain
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5
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Dong S, Li L, Hao F, Fang Z, Zhong R, Wu J, Fang X. Improving quality of poultry and its meat products with probiotics, prebiotics, and phytoextracts. Poult Sci 2024; 103:103287. [PMID: 38104412 DOI: 10.1016/j.psj.2023.103287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 12/19/2023] Open
Abstract
Remarkable changes have occurred in poultry farming and meat processing in recent years, driven by advancements in breeding technology, feed processing technology, farming conditions, and management practices. The incorporation of probiotics, prebiotics, and phytoextracts has made significant contributions to the development of poultry meat products that promote both health and functionality throughout the growth phase and during meat processing. Poultry fed with these substances improve meat quality, while incorporating probiotics, prebiotics, and phytoextracts in poultry processing, as additives or supplements, inhibits pathogens and offers health benefits to consumers. However, it is vital to assess the safety of functional fermented meat products containing these compounds and their potential effects on consumer health. Currently, there's still uncertainty in these aspects. Additionally, research on utilizing next-generation probiotic strains and synergistic combinations of probiotics and prebiotics in poultry meat products is in its early stages. Therefore, further investigation is required to gain a comprehensive understanding of the beneficial effects and safety considerations of these substances in poultry meat products in the future. This review offered a comprehensive overview of the applications of probiotics and prebiotics in poultry farming, focusing on their effects on nutrient utilization, growth efficiency, and gut health. Furthermore, potential of probiotics, prebiotics, and phytoextracts in enhancing poultry meat production was explored for improved health benefits and functionality, and possible issues associated with the use of these substances were discussed. Moreover, the conclusions drawn from this review and potential future perspectives in this field are presented.
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Affiliation(s)
- Sashuang Dong
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510630, PR China; Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512000, PR China
| | - Lanyin Li
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510630, PR China
| | - Fanyu Hao
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510630, PR China
| | - Ziying Fang
- Weiran Food Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518000, PR China
| | - Ruimin Zhong
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512000, PR China
| | - Jianfeng Wu
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510630, PR China.
| | - Xiang Fang
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510630, PR China.
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Salgado Pardo JI, Navas González FJ, González Ariza A, León Jurado JM, Galán Luque I, Delgado Bermejo JV, Camacho Vallejo ME. Study of Meat and Carcass Quality-Related Traits in Turkey Populations through Discriminant Canonical Analysis. Foods 2023; 12:3828. [PMID: 37893720 PMCID: PMC10606380 DOI: 10.3390/foods12203828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
The present research aimed to determine the main differences in meat and carcass quality traits among turkey genotypes worldwide and describe the clustering patterns through the use of a discriminant canonical analysis (DCA). To achieve this goal, a comprehensive meta-analysis of 75 documents discussing carcass and meat characteristics in the turkey species was performed. Meat and carcass attributes of nine different turkey populations were collected and grouped in terms of the following clusters: carcass dressing traits, muscle fiber properties, pH, color-related traits, water-retaining characteristics, texture-related traits, and meat chemical composition. The Bayesian ANOVA analysis reported that the majority of variables statistically differed (p < 0.05), and the multicollinearity analysis revealed the absence of redundancy problems among variables (VIF < 5). The DCA reported that cold carcass weight, slaughter weight, sex-male, carcass/piece weight, and the protein and fat composition of meat were the traits explaining variability among different turkey genotypes (Wilks' lambda: 0.488, 0.590, 0.905, 0.906, 0.937, and 0.944, respectively). The combination of traits in the first three dimensions explained 94.93% variability among groups. Mahalanobis distances cladogram-grouped populations following a cluster pattern and suggest its applicability as indicative of a turkey genotype's traceability.
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Affiliation(s)
- José Ignacio Salgado Pardo
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain; (J.I.S.P.); (F.J.N.G.); (I.G.L.); (J.V.D.B.)
| | - Francisco Javier Navas González
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain; (J.I.S.P.); (F.J.N.G.); (I.G.L.); (J.V.D.B.)
| | - Antonio González Ariza
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain; (J.I.S.P.); (F.J.N.G.); (I.G.L.); (J.V.D.B.)
- Agropecuary Provincial Centre, Diputación Provincial de Córdoba, 14071 Córdoba, Spain;
| | | | - Inés Galán Luque
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain; (J.I.S.P.); (F.J.N.G.); (I.G.L.); (J.V.D.B.)
| | - Juan Vicente Delgado Bermejo
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain; (J.I.S.P.); (F.J.N.G.); (I.G.L.); (J.V.D.B.)
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7
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Neethirajan S. Digital Phenotyping: A Game Changer for the Broiler Industry. Animals (Basel) 2023; 13:2585. [PMID: 37627376 PMCID: PMC10451972 DOI: 10.3390/ani13162585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
In response to escalating global demand for poultry, the industry grapples with an array of intricate challenges, from enhancing productivity to improving animal welfare and attenuating environmental impacts. This comprehensive review explores the transformative potential of digital phenotyping, an emergent technological innovation at the cusp of dramatically reshaping broiler production. The central aim of this study is to critically examine digital phenotyping as a pivotal solution to these multidimensional industry conundrums. Our investigation spotlights the profound implications of 'digital twins' in the burgeoning field of broiler genomics, where the production of exact digital counterparts of physical entities accelerates genomics research and its practical applications. Further, this review probes into the ongoing advancements in the research and development of a context-sensitive, multimodal digital phenotyping platform, custom-built to monitor broiler health. This paper critically evaluates this platform's potential in revolutionizing health monitoring, fortifying the resilience of broiler production, and fostering a harmonious balance between productivity and sustainability. Subsequently, the paper provides a rigorous assessment of the unique challenges that may surface during the integration of digital phenotyping within the industry. These span from technical and economic impediments to ethical deliberations, thus offering a comprehensive perspective. The paper concludes by highlighting the game-changing potential of digital phenotyping in the broiler industry and identifying potential future directions for the field, underlining the significance of continued research and development in unlocking digital phenotyping's full potential. In doing so, it charts a course towards a more robust, sustainable, and productive broiler industry. The insights garnered from this study hold substantial value for a broad spectrum of stakeholders in the broiler industry, setting the stage for an imminent technological evolution in poultry production.
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Affiliation(s)
- Suresh Neethirajan
- Department of Animal Science and Aquaculture, Faculty of Computer Science, Dalhousie University, Halifax, NS B3H 4R2, Canada
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8
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Fiorilla E, Birolo M, Ala U, Xiccato G, Trocino A, Schiavone A, Mugnai C. Productive Performances of Slow-Growing Chicken Breeds and Their Crosses with a Commercial Strain in Conventional and Free-Range Farming Systems. Animals (Basel) 2023; 13:2540. [PMID: 37570348 PMCID: PMC10417706 DOI: 10.3390/ani13152540] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/17/2023] [Accepted: 08/05/2023] [Indexed: 08/13/2023] Open
Abstract
Local chicken breeds play a vital role in promoting sustainability by preserving genetic diversity, enhancing resilience, and supporting local economies. These breeds are adapted to local climates and conditions, requiring fewer external resources and inputs for their maintenance. By conserving and utilizing local chicken breeds, sustainable farming practices can be incentivized, maintaining ecosystem balance and ensuring food security for future generations. The present study aimed at evaluating the growth performance and slaughter traits of two local Italian chicken breeds (Bionda Piemontese and Robusta Maculata) and their crosses with a medium-growth genotype (Sasso chicken®) reared in conventional and free-range farming systems. The conventional system used a high-energy high-protein diet in a closed barn with controlled temperature, humidity, and lighting, and a stocking density of 33 kg/m2. The free-range system used a low-input diet (low-energy low-protein diet composed of local and GMO-free feed ingredients), uncontrolled environmental conditions, and a stocking density of 21 kg/m2 in a barn with free access to an outdoor area. The birds were slaughtered at 84 days of age in both systems. The crossbred chickens showed the best results for growth performance in both farming systems compared to local breeds. Within genotype, the final live weight of chickens was similar in the two farming systems. In conclusion, slow-growth crossbreeds should be used in alternative farming systems, demonstrating better performance than pure local breeds.
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Affiliation(s)
- Edoardo Fiorilla
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy; (U.A.); (A.S.); (C.M.)
| | - Marco Birolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell’Università, 16, 35020 Padova, Italy; (M.B.); (G.X.); (A.T.)
| | - Ugo Ala
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy; (U.A.); (A.S.); (C.M.)
| | - Gerolamo Xiccato
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell’Università, 16, 35020 Padova, Italy; (M.B.); (G.X.); (A.T.)
| | - Angela Trocino
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell’Università, 16, 35020 Padova, Italy; (M.B.); (G.X.); (A.T.)
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell’Università, 16, 35020 Padova, Italy
| | - Achille Schiavone
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy; (U.A.); (A.S.); (C.M.)
| | - Cecilia Mugnai
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy; (U.A.); (A.S.); (C.M.)
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9
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Adams JRG, Mehat J, La Ragione R, Behboudi S. Preventing bacterial disease in poultry in the post-antibiotic era: a case for innate immunity modulation as an alternative to antibiotic use. Front Immunol 2023; 14:1205869. [PMID: 37469519 PMCID: PMC10352996 DOI: 10.3389/fimmu.2023.1205869] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/12/2023] [Indexed: 07/21/2023] Open
Abstract
The widespread use of antibiotics in the poultry industry has led to the emergence of antibiotic-resistant bacteria, which pose a significant health risk to humans and animals. These public health concerns, which have led to legislation limiting antibiotic use in animals, drive the need to find alternative strategies for controlling and treating bacterial infections. Modulation of the avian innate immune system using immunostimulatory compounds provides a promising solution to enhance poultry immune responses to a broad range of bacterial infections without the risk of generating antibiotic resistance. An array of immunomodulatory compounds have been investigated for their impact on poultry performance and immune responses. However, further research is required to identify compounds capable of controlling bacterial infections without detrimentally affecting bird performance. It is also crucial to determine the safety and effectiveness of these compounds in conjunction with poultry vaccines. This review provides an overview of the various immune modulators known to enhance innate immunity against avian bacterial pathogens in chickens, and describes the mechanisms involved.
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Affiliation(s)
- James R. G. Adams
- School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
- Avian Immunology, The Pirbright Institute, Woking, United Kingdom
| | - Jai Mehat
- School of Biosciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Roberto La Ragione
- School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
- School of Biosciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
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10
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Mesele TL. Reproduction and production performance of improved chickens, their production constraints, and opportunities under Ethiopian conditions. Trop Anim Health Prod 2023; 55:245. [PMID: 37340246 DOI: 10.1007/s11250-023-03653-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/06/2023] [Indexed: 06/22/2023]
Abstract
Chickens have important roles in human food security and social and cultural values throughout the world. The current review focused on improved chickens' reproduction and production performance, their production constraints, and opportunities under Ethiopian conditions. The review covered nine performance traits, thirteen commercial breeds, and eight crossbreds between commercial breeds, and local chicken. The genotypes affected the age of the first egg, eggs per hen per year, and average egg weight. The three exotic breeds with short ages at first egg were Lohmann Brown, Novo Brown, and Potchefstroom Koekoek at 137, 140, and 142 days, respectively. The three genotypes with the highest egg production were Sasso T44, Bovans Brown, and Isa Browns laying 229, 235, and 276 eggs per hen per year. The three with the highest egg weight were Isa Browns, Bovans Brown, and Sasso T44 with their eggs weighing 58.8, 60.3, and 65.6 g each, respectively. Crossbreeding indigenous chicken with exotic breeds improved the age at first egg-lay, eggs per hen per year, and egg weigh. Crossbreeding indigenous chicken with exotic breeds shortened the age at first egg-lay. Crossbred of indigenous chicken with Fayoumi, Rhode Island Red, and White Leghorn reduced age at first egg-lay to 196.0, 198.3 and 224.3 days, respectively. Crossbreeding Dominant Red Barred with indigenous chicken reduced the age at first egg-lay from 137.3 to 130.7 days. Among the crossbred chicken, crossing between local chicken and Fayoumi, White Leghorn, and Yarkon laid the most eggs per hen per year being 119, 120, and 129 eggs, respectively. The crossbreed between Dominant Red Barred, and Horro ecotype aged 41-44 weeks laid eggs weighing 56.3 g. The management practices affected age at first egg with the smallholder production system tending to delay it and reduced the eggs per hen per year and average egg weight. The age at first egg-lay for Bovans Brown breed ranged from 165.6 to 196.2 days under this system. Potchefstroom Koekoek chicken breed reared under this system laid 130.5 to 187.0 eggs per hen per year. When additional feed was provided, Bovans Brown chicken breed increased their egg production from 133.5 to 235.9 eggs per hen per year. The average egg weight was 43.0, 52.1, and 52.5 g for Fayoumi, White Leghorn, and Rhode Island Red chicken, repectivelly, under this system in northern Ethiopia. Most chicken breeds were reared under inadequate management practices resulting in suboptimal performance. Crossbreeding exotic and indigenous chicken breeds and intensifying the management will improve performance. The existence of suitable market demand for chicken products, readily available commercial feeds, and government and private investor involvement are emerging opportunities for enhanced chicken performance in Ethiopia.
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Affiliation(s)
- Tsegay Lijalem Mesele
- Department of Animal Production and Technology, College of Agriculture and Environmental Sciences, Adigrat University, Adigrat, Tigray, Ethiopia.
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11
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Ijaz M, Khan F, Zaki HEM, Khan MM, Radwan KSA, Jiang Y, Qian J, Ahmed T, Shahid MS, Luo J, Li B. Recent Trends and Advancements in CRISPR-Based Tools for Enhancing Resistance against Plant Pathogens. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091911. [PMID: 37176969 PMCID: PMC10180734 DOI: 10.3390/plants12091911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/29/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
Targeted genome editing technologies are becoming the most important and widely used genetic tools in studies of phytopathology. The "clustered regularly interspaced short palindromic repeats (CRISPR)" and its accompanying proteins (Cas) have been first identified as a natural system associated with the adaptive immunity of prokaryotes that have been successfully used in various genome-editing techniques because of its flexibility, simplicity, and high efficiency in recent years. In this review, we have provided a general idea about different CRISPR/Cas systems and their uses in phytopathology. This review focuses on the benefits of knock-down technologies for targeting important genes involved in the susceptibility and gaining resistance against viral, bacterial, and fungal pathogens by targeting the negative regulators of defense pathways of hosts in crop plants via different CRISPR/Cas systems. Moreover, the possible strategies to employ CRISPR/Cas system for improving pathogen resistance in plants and studying plant-pathogen interactions have been discussed.
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Affiliation(s)
- Munazza Ijaz
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Fahad Khan
- Tasmanian Institute of Agriculture, University of Tasmania, Prospect, TAS 7250, Australia
| | - Haitham E M Zaki
- Horticulture Department, Faculty of Agriculture, Minia University, El-Minia 61517, Egypt
- Applied Biotechnology Department, University of Technology and Applied Sciences-Sur, Sur 411, Oman
| | - Muhammad Munem Khan
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad 38000, Pakistan
| | - Khlode S A Radwan
- Plant Pathology Department, Faculty of Agriculture, Minia University, El-Minia 61517, Egypt
| | - Yugen Jiang
- Agricultural Technology Extension Center of Fuyang District, Hangzhou 311400, China
| | - Jiahui Qian
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Temoor Ahmed
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Shafiq Shahid
- Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khod 123, Oman
| | - Jinyan Luo
- Department of Plant Quarantine, Shanghai Extension and Service Center of Agriculture Technology, Shanghai 201103, China
| | - Bin Li
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
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Liu M, Zhou J, Li Y, Ding Y, Lian J, Dong Q, Qu Q, Lv W, Guo S. Effects of dietary polyherbal mixtures on growth performance, antioxidant capacity, immune function and jejunal health of yellow-feathered broilers. Poult Sci 2023; 102:102714. [PMID: 37172360 DOI: 10.1016/j.psj.2023.102714] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/06/2023] [Accepted: 04/09/2023] [Indexed: 05/14/2023] Open
Abstract
This study aimed to investigate the effects of polyherbal mixtures (PHM) on growth performance, antioxidant capacities, immune function, and intestinal health in yellow-feathered broilers. PHM is composed of five traditional Chinese medicine herbs (Portulaca oleracea L., Radix Sophora flavescens, Thalictrum glandulosissimum, Terra flava usta, and Pogostemon cablin). A total of 270 one-day-old yellow-feathered broilers were randomly allotted into 3 treatments for a 42-d feeding trial, each with 6 replicates of 15 birds. The dietary treatments consisted of a basal diet (CON), a basal diet supplemented with 50 mg/kg chlortetracycline (CTC), and a basal diet supplemented with 1000 mg/kg PHM. The results showed that dietary PHM supplementation increased body weight, ADG, and decreased F/G compared to the CON. PHM also increased spleen index and mRNA expression of IL-4 (d 21), and thymus index, serum IgA (d 42) and IgG, IL-4 and sIgA in jejunal mucosa (d 21 and 42), but decreased serum IFN-γ and mRNA expression of IFN-γ (d 21 and 42). In addition, PHM increased serum SOD, GSH-Px (d 21 and 42) and T-AOC (d 42), but decreased the content of serum MDA (d 21), the up-regulated mRNA expression of GSH-Px, CAT (d 21), SOD and CAT (d 42). Furthermore, PHM also improved the intestinal epithelial barrier indicators by the up-regulated mRNA expression of CLDN-1, OCLN (d 21 and 42) and ZO-1 (d 21), and the increased of villus height and villus height to crypt depth in jejunum (d 42). The high-throughput sequencing results showed that dietary PHM supplementation increased the alpha diversity and relative abundance of Oscillospira and Ruminococcus (d 21) and Lactobacillus (d 42), whereas decreasing that of Enterococcus (d 21) compared with CON. PICRUSt analysis revealed that metabolic pathways of carbohydrate, energy, lipid, cofactors, and vitamins were significantly enriched in the PHM group. Spearman's correlation analysis revealed that the genera Lactobacillus, Enterococcus, Ruminococcus, Oscillospira, and Faecalibacterium were related to growth performance, intestinal integrity, immune-related factors, antioxidant indices, and tight junction proteins. In conclusion, the results indicated that dietary PHM supplementation improved growth performance and immune status of yellow-feathered broilers by enhancing antioxidant capacities, barrier function, and modulated jejunal microbial communities. PHM used in our study has the potential to replace prophylactic antibiotic use in poultry production systems.
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Affiliation(s)
- Mengjie Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jing Zhou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Yue Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Yiqing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jiale Lian
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Qi Dong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Qian Qu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Weijie Lv
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Shining Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China; Guangdong Technology Research center for Traditional Chinese Veterinary Medicine and Natural Medicine, Guangzhou, People's Republic of China.
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Abstract
PURPOSE OF REVIEW Nontyphoidal Salmonella is a major food safety concern in developed and developing countries. Table eggs are often linked to cases of foodborne gastrointestinal disease. This review is focused on the latest findings on foodborne Salmonella infections acquired from poultry products and their implications on food safety. RECENT FINDINGS Salmonella Enteritidis (SE) and Salmonella Typhimurium (ST) are the predominant Salmonella serovars associated with human Salmonellosis. In Australia, ST is the predominant serovar but SE has been recently detected in some commercial free-range egg flocks. The Salmonella shedding in poultry flocks can be highly variable across different flocks and farms; as a result, the level of product contamination is largely attributed to the flock management. The microevolution in the ST genome after in-vivo passaging may have clinical significance. On farm use of Salmonella vaccines and/or interventions during the processing of the product can influence the bacterial load. The refrigeration of the product also influences the safety of the poultry product. SUMMARY Many interventions are in place for the control of Salmonella from farm to fork. However, given the biosecurity challenges because of the increase in public demand for free-range products, the emergence of Salmonella virulent types and expensive diagnostics, ongoing collaborative efforts from farmers, regulators and public health officials are required.
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14
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Du J, Zhao Y, Wang Y, Xie M, Wang R, Liu N, An X, Qi J. Growth, carcase characteristics, meat quality, nutrient digestibility and immune function of broilers fed with enzymatically treated or raw dandelion (taraxacum mongolicum hand.-mazz.). ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2096488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Juan Du
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Yang Zhao
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Yuan Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Mingxin Xie
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Ruifang Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Na Liu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Xiaoping An
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
| | - Jingwei Qi
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Inner Mongolia Herbivorous Livestock Feed Engineering Technology Research Center, Hohhot, China
- Key Laboratory of Smart Animal Husbandry at Universities of Inner Mongolia Automomous Region, Hohhot, China
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15
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Combining Abilities, Heterosis, Growth Performance, and Carcass Characteristics in a Diallel Cross from Black-Bone Chickens and Thai Native Chickens. Animals (Basel) 2022; 12:ani12131602. [PMID: 35804500 PMCID: PMC9264945 DOI: 10.3390/ani12131602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to determine the combining abilities and heterosis for the growth performance and carcass characteristics in crosses between Hmong black-bone (HB), Chinese black-bone (CB), and Thai native (TN) chickens using a mating system diallel crossing. Nine crossbred chickens including HB × HB, CB × CB, TN × TN, HB × TN, TN × HB, CB × HB, HB × CB, TN × CB, and CB × TN, were tested. The total data were 699 recorded at the beginning of the experiment to 595 recorded in weeks 14 of age. Body weight (BW), average daily gain (ADG), feed conversion ratio (FCR), and survival rate (SUR) were recorded. Heterosis and combining ability regarding general combining ability (GCA), specific combining ability (SCA), and reciprocal combining ability (RCA) were estimated. The study found that CB had the greatest BW and ADG at all weeks (p < 0.05) except for hatch, while those of HB were the lowest. The highest GCA was found in CB; meanwhile, GCA was significantly negative in HB of all ages. Crossing between TN × CB had the greatest BW from 8 weeks of age, which was related to positive SCA and RCA values. However, the RCA value of TN × CB was lower than the SCA value of CB × TN. The yield percentages of the carcass in CB (87.00%) were higher than those in TN (85.05%) and HB (82.91%) (p < 0.05). The highest breast and thigh meat lightness (L*) values were obtained in TN (p < 0.05), while those of CB and HB were not different (p > 0.05). In the crossbreed, the yield percentage of the carcass was highest in TN × CB (89.65%) and CB × TN (88.55%) (p > 0.05) and was lowest in TN × HB (71.91%) (p < 0.05). The meat and skin color of the breast and thigh parts in the crossbreed had the lowest lightness in HB × CB (27.91 to 38.23) (p < 0.05), while those of TN × CB and CB × TN were insignificant (p > 0.05). In conclusion, crossing between the TN sires and CB dams has the preferable potential to develop crossbred Thai native chickens for commercial use based on their high growth performance.
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16
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Cheng Y, Xie Y, Shi L, Xing Y, Guo S, Gao Y, Liu Z, Yan S, Shi B. Effects of rare earth-chitosan chelate on growth performance, antioxidative and immune function in broilers. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2028589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yuchen Cheng
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yi Xie
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Lulu Shi
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yuanyuan Xing
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Shiwei Guo
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yibiao Gao
- Qingdao Nuoneng Biotechnology Co., Ltd, Qingdao, China
| | - Zhengya Liu
- Shenzhen Xike’an Industrial Co., Ltd, Shenzhen, China
| | - Sumei Yan
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Binlin Shi
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
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