Article
Agriculture, Dairy & Animal Science
Adelumola Oladeinde, Babafela Awosile, Reed Woyda, Zaid Abdo, Dinku Endale, Timothy Strickland, Jodie Plumblee Lawrence, Denice Cudnik, Sandra House, Kimberly Cook
Summary: In this study, longitudinal sampling of peanut hull-based litter from a farm under a no antibiotics ever program was conducted to determine the factors associated with the occurrence of food-borne pathogens and the abundance of commensal bacteria. Logistic and linear regression models were used to analyze the relationships between pathogen prevalence, commensal abundance, broiler management practices, and environmental factors. The results showed that different factors influenced the prevalence of Salmonella and Campylobacter, suggesting the need for tailored interventions for each pathogen to prevent their persistence in broiler litter.
Article
Infectious Diseases
Aaron Oxendine, Allison A. Walsh, Tamesha Young, Brandan Dixon, Alexa Hoke, Eda Erdogan Rogers, Margie D. Lee, John J. Maurer
Summary: Animal manures contain a large reservoir of antimicrobial resistance (AMR) genes, which could potentially transfer to antibiotic-susceptible pathogens. This study examined the ability of poultry litter microbiota to transmit AMR and found a high abundance of AMR to streptomycin and tetracycline, as well as a significant AMR gene load. However, experiments showed that plasmid transfer and transmission of resistance in poultry litter were low under commonly used conditions.
Article
Engineering, Environmental
Ran Avidov, Avishai Lublin, Vempalli Sudharsan Varma, Ibrahim Saadi, Israel Yoselewitz, Yona Chen, Yael Laor
Summary: Composting poultry carcasses and infected litter can effectively eliminate Avian flu and Newcastle viruses under various temperatures and aerobic/anaerobic conditions. However, Salmonella can persist at 40 degrees Celsius, especially under anaerobic conditions. The composting process results in significant mass loss and the odor can become offensive. The water balance in composting sleeves needs to be carefully managed, as excessive moisture can be generated.
Article
Agriculture, Dairy & Animal Science
Amrit Pal, Matthew A. Bailey, Aidan A. Talorico, James T. Krehling, Kenneth S. Macklin, Stuart B. Price, Richard Jeff Buhr, Dianna Bourassa
Summary: This study found through in vitro experiments that Salmonella can potentially be transmitted through dust from poultry litter, with litter moisture levels impacting this process. Results suggest that higher levels of Salmonella in litter increase the likelihood of detecting Salmonella in dust, while higher litter moisture levels decrease the prevalence of Salmonella in generated dust.
Article
Agriculture, Dairy & Animal Science
Bruno S. Mendonca, Willian R. de Oliveira, Rhaquel S. Pereira, Luciana R. Santos, Laura B. Rodrigues, Elci L. Dickel, Luciane Daroit, Fernando Pilotto
Summary: A new poultry litter disinfection method using gaseous ammonia was proposed in this study, which successfully eliminated pathogenic Salmonella spp. Through experiments and field observations, it was found that this method effectively reduced the survival and transmission of Salmonella in poultry litter.
Article
Plant Sciences
Xiaojian Wu, Yue Cao, Yu Jiang, Mingxu Chen, Huiguang Zhang, Pengfei Wu, Xiangqing Ma
Summary: This study used a net bag decomposition method to observe the dynamics of NSCs release in Chinese fir topsoil and canopy litter at four altitudes. The study found that the release of NSCs in Chinese fir litter rises gradually with increasing height, and the difference in cumulative release percentage of soluble sugar between altitudes is more significant than that of starch. The NSC content response in different treatment groups at four altitudes is also different.
Article
Veterinary Sciences
Robert Valeris-Chacin, Maria Pieters, Haejin Hwang, Timothy J. Johnson, Randall S. Singer
Summary: Campylobacter species, a common pathogen causing bacterial diarrhea, can persist in broiler houses through various sources, and its isolation is associated with the composition of the broiler litter microbiome. Certain bacterial genera, like Clostridium and Anaerostipes, were positively correlated with Campylobacter isolation, while others, like Bifidobacterium, Anaerosporobacter, and Stenotrophomonas, were negatively associated, suggesting potential for pre-harvest control strategies.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Kelsy Robinson, Anna L. F. Assumpcao, Komala Arsi, Gisela F. Erf, Annie Donoghue, Palmy R. R. Jesudhasan
Summary: The research demonstrates the ability of Salmonella to alter the intestinal microbiota composition and highlights potential probiotics for combating Salmonella colonization. Additionally, the study indicates the early involvement of monocytes and thrombocytes during colonization, followed by heterophils.
Article
Microbiology
Tawni L. Crippen, Baneshwar Singh, Robin C. Anderson, Cynthia L. Sheffield
Summary: This study investigated the microbial community of litter beetles in broiler chicken facilities and pastureland after the spent litter was used as fertilizer. The research found significant changes in the microbial profiles of the beetles in different environments, indicating the potential impact of environmental conditions on their microbiome.
Article
Agriculture, Dairy & Animal Science
Madri Brink, Geert P. J. Janssens, Evelyne Delezie
Summary: The addition of water to broiler litter can increase ammonia emissions and decrease litter quality, leading to a higher incidence of foot lesions in broilers.
Article
Biotechnology & Applied Microbiology
Minna Sarvi, Marleena Hagner, Sannakajsa Velmala, Helena Soinne, Risto Uusitalo, Riikka Keskinen, Kari Ylivainio, Janne Kaseva, Kimmo Rasa
Summary: Granulated poultry manure can be used as a phosphorus fertilizer for annual crops with similar bioavailability to mineral fertilizer phosphorus, while pyrolyzed poultry manure is suitable as a slow-release or storage phosphorus fertilizer.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Microbiology
Lapo Mughini-Gras, Angela H. A. M. van Hoek, Tryntsje Cuperus, Cecile Dam-Deisz, Wendy van Overbeek, Maaike van den Beld, Ben Wit, Michel Rapallini, Bart Wullings, Eelco Franz, Joke van der Giessen, Cindy Dierikx, Marieke Opsteegh
Summary: In Dutch broiler flocks, a heterogeneous population of (pESI-carrying) S. Infantis has been established with evidence of possible vertical transmission. These bacteria exhibit resistance to multiple antibiotics, with certain feed, antibiotic use, and cleaning practices posing risk factors. Further monitoring and control measures are recommended to address this issue.
VETERINARY MICROBIOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Xin Yu, Hongwei Zhu, Yongheng Bo, Youzhi Li, Yue Zhang, Yang Liu, Jianlong Zhang, Linlin Jiang, Guozhong Chen, Xingxiao Zhang
Summary: The study investigated the prevalence and antimicrobial resistance of Salmonella enterica serovar Enteritidis in broiler chickens in Shandong Province, China. It found that S. Enteritidis was the predominant serovar with high antimicrobial resistance rates to several antibiotics. Multidrug resistance, particularly to fluoroquinolone, showed an increasing trend from 2013 to 2018. This study provides updated information on antimicrobial resistance data and risk assessment for Salmonella Enteritidis in broiler chickens in Shandong Province, which can be valuable for future surveillance activities to ensure chicken supply safety.
Article
Biotechnology & Applied Microbiology
Surendra Rasamsetti, Nikki W. Shariat
Summary: Salmonella contamination of poultry remains a food safety challenge for broiler processors. This study demonstrated the efficacy of antimicrobial interventions in reducing Salmonella in commercial broiler processing plants and assessed changes in Salmonella serovars before and after the chilling process.
Article
Agriculture, Dairy & Animal Science
Laura Lorenzo-Rebenaque, Danish J. Malik, Pablo Catala-Gregori, Clara Marin, Sandra Sevilla-Navarro
Summary: This study demonstrates that microencapsulation of bacteriophages can enable targeted delivery to the gut and cecum of animals, providing a promising method to control Salmonella in poultry at any time during the rearing period.
Article
Agriculture, Dairy & Animal Science
Jesper Tessin, Judith Rohde, Arne Jung, Nicole Kemper, Jochen Schulz
Summary: In this study, samples from poultry house environment and culled birds were collected, and E. cecorum was successfully isolated. The principle of isolating the pathogen by streaking on a chromogenic agar may motivate researchers to investigate transmission routes and optimize biosecurity measures.
Article
Agriculture, Dairy & Animal Science
Junqin Zhang, Zimin Xie, Yanlin Pan, Zuoxin Chen, Yunzhen Huang, Linlin Li, Jiawen Dong, Yong Xiang, Qi Zhai, Minhua Sun, Xingying Li, Shujian Huang, Ming Liao
Summary: In recent years, there has been an increase in the occurrence of fowl adenovirus 2 (FAdV-2) in China, posing a significant threat to the poultry industry. This study investigated the epidemiology, phylogenetic relationship, genomic characteristics, and pathogenicity of FAdV-2. The results showed that FAdV-2 was the most commonly detected serotype among various FAdV serotypes. Genetic analysis revealed that these FAdV-2 strains formed a distinct branch within the FAdV-D group and had a high nucleotide similarity with reference strains. Recombination analysis identified recombination events between FAdV-2 and FAdV-11 in some strains. Pathogenicity experiments demonstrated that a recombinant FAdV-2 strain caused a high mortality rate and more severe disease in chickens. These findings contribute to our understanding of FAdV-2 and provide a basis for vaccine development.
Article
Agriculture, Dairy & Animal Science
Ebtsam Iraqi, Ali Abdel Hady, Nadia Elsayed, Hanaa Khalil, Amina El-Saadany, Karim El-Sabrout
Summary: Thermal manipulation during egg incubation, particularly at 12 to 18 days, has positive effects on embryonic development, hatching characteristics, chick quality, as well as posthatch thermotolerance and performance.
Article
Agriculture, Dairy & Animal Science
Yong Liu, Mingxin Song, He Bai, Chunhua Wang, Fei Wang, Qi Yuan
Summary: Dietary curcumin supplementation can significantly improve egg quality of quails in the late laying period, primarily by improving lipid metabolism and selectively regulating the intestinal microbial community.
Article
Agriculture, Dairy & Animal Science
Lei Zhang, Zhixuan Song, Peiyao Li, Xingju Song, Xinming Tang, Dandan Hu
Summary: This study evaluated the vaccine potential of recombinant proteins for avian coccidiosis caused by Eimeria. The results showed that the rEten5-B protein can trigger immune protection against E. tenella and may be a potential and effective subunit vaccine for the control of coccidiosis in poultry.
Article
Agriculture, Dairy & Animal Science
Milan Kumar Sharma, Amit Kumar Singh, Doyun Goo, Venkata Sesha Reddy Choppa, Hanseo Ko, Hanyi Shi, Woo Kyun Kim
Summary: The study investigates the effect of Eimeria infection on gastrointestinal physiology, growth performance, and egg production of Hy-Line W-36 laying hens during peak production. Results show that Eimeria infection negatively affects body weight, feed intake, immune response, and nutrient transporter gene expression. Egg production temporarily ceases in hens infected with high and medium-high dosages of Eimeria.
Article
Agriculture, Dairy & Animal Science
Elwy A. Ashour, Mahmoud Kamal, Hayman A. A. Altaie, Ayman A. Swelum, Gamaleldin M. Suliman, Guillermo Tellez-Isaias, Mohamed E. Abd El-Hack
Summary: This study evaluated the effects of CP and ME on the performance and nutritional value of Japanese quail lay chicken. The results showed that protein and energy levels significantly influenced all productive outcomes except feed conversion ratio. The combination of dietary energy and protein levels had a substantial effect on all egg quality trials evaluated. It is recommended to feed layer Japanese quail between the ages of 8 and 20 weeks during the summer with a dietary energy content of 2,900 kcal ME/kg and 20% CP.
Article
Agriculture, Dairy & Animal Science
J. E. Doornweerd, R. F. Veerkamp, B. de Klerk, M. van der Sluis, A. C. Bouwman, E. D. Ellen, G. Kootstra
Summary: Tracking group-housed individual broilers using video can provide valuable information on their health, welfare, and performance. This study conducted a comprehensive analysis on broiler tracking on video and potential tracking errors, highlighting the potential and challenges of phenotyping broiler locomotion. The results emphasized the importance of addressing tracking errors, potential algorithm improvements, and the need for an external animal identification system for efficient locomotion phenotyping.
Article
Agriculture, Dairy & Animal Science
Jiayu Wu, Yanan Wang, Yu An, Changyu Tian, Lingfeng Wang, Zuhong Liu, Desheng Qi
Summary: This study compared the gene expression differences in liver tissues of laying hens at different ages using RNA sequencing, and found that the transport and metabolism of amino acids changed during the growing period, which influenced the growth and development of the hens.
Article
Agriculture, Dairy & Animal Science
J. Raabe, G. Raveendran, W. Otten, K. Homeyer, T. Bartels
Summary: This study investigated the effects of different flicker frequencies on the behavior, performance, and stress response in male turkeys. The results showed that flicker frequencies of 165 Hz or higher had no detrimental effect on growth performance, injurious pecking, or endocrine stress response in the turkeys.
Article
Agriculture, Dairy & Animal Science
Adamu Mani Isa, Yanyan Sun, Yuanmei Wang, Yunlei Li, Jingwei Yuan, Aixin Ni, Hui Ma, Lei Shi, Hailai Hagos Tesfay, Yunhe Zong, Panlin Wang, Pingzhuang Ge, Jilan Chen
Summary: This study sequenced mRNAs and lncRNAs in the ovary stroma of specific chicken breeds and their reciprocal crossbreds to understand the molecular mechanism of heterosis for egg production. Results showed that genes with nonadditive expression were related to follicle growth and atresia as well as oxidative stress in the crossbred hens.
Article
Agriculture, Dairy & Animal Science
Zhepeng Wang, Qiu Chen, Yiwei Wang, Yulu Wang, Ruifang Liu
Summary: The study investigates the functional variants associated with chicken eggshell color in the SLCO1B3 gene by measuring the eggshell color of Lueyang black-boned chickens and analyzing the genetic data. It identifies 15 variants in SLCO1B3 that are significantly associated with eggshell color. However, the functional analysis shows that one specific variant, 1B3_SNP108, does not have a significant effect on promoter activity. This study highlights the importance of SLCO1B3 and its variants in breeding eggshell color.
Article
Agriculture, Dairy & Animal Science
P. Yin, Q. Tong, B. M. Li, W. C. Zheng, Y. Wang, H. Q. Peng, X. L. Xue, S. Q. Wei
Summary: This study investigated the welfare and health of laying hens in a multitier system. The results showed that the spatial distribution of hens changed with increasing age, and lower-ranking hens preferred to stay in lower tiers to avoid competition but still had access to resources. This improved the welfare and health of the hens near the end of the laying cycle.
Article
Agriculture, Dairy & Animal Science
Wenwen Liang, Siqiong Jie, Yiqin Wang, Xiaowei Wen, Yanling Xiong, Xiaoxi Lin, Zhengrong Lv
Summary: This study examined the effect of risk perceptions on preventive behavior among vendors in the live poultry wholesale market and the live poultry retail market in Guangdong Province using the health belief model and structural equation modeling. The results showed that perceived severity and perceived benefits positively influenced vendors' self-efficacy in the wholesale market, while perceived barriers negatively affected self-efficacy in both the wholesale and retail markets. Moreover, cues to action mediated the relationship between perceived severity, perceived benefits, and self-efficacy, and also mediated the effect of perceived susceptibility among wholesale market vendors.
Article
Agriculture, Dairy & Animal Science
Shreeya Sharma, Raveendra R. Kulkarni, Shayan Sharif, Hosni Hassan, Mohammadali Alizadeh, Scott Pratt, Khaled Abdelaziz
Summary: The study investigates the impact of exposing chick embryos to antigens via in ovo delivery of poultry-specific lactobacilli on the expression of genes associated with early bursal development and maturation. Results indicate that the supplementation of poultry-specific lactobacilli to chick embryos can accelerate the development and immunological maturation of the bursa of Fabricius.