Article
Agriculture, Dairy & Animal Science
Hossein Ayasi, Behrouz Dastar, Taghi Ghoorchi, Seyed Reza Hashemi, Alijan Tabaraei, Morteza Alemi
Summary: This study evaluated the effects of diets containing a high level of corn silage and alfalfa meal on inducing molt and reducing susceptibility to Salmonella Enteritidis in laying hens. The results showed that using corn silage and alfalfa meal in the diet improved the resistance of hens to Salmonella during the molting process.
Article
Agriculture, Dairy & Animal Science
Magdalena Kopacz, Aleksandra Alicja Drazbo, Katarzyna Smiecinska, Katarzyna Ognik
Summary: Rapeseed cake (RC) is being considered as an alternative protein source to soybean meal (SBM) in poultry diets, with technological processes like thermal treatment and fermentation improving its nutritional value. Inclusion of 20% RC in layer diets improves egg yolk fatty acid profile and redox status, with hydrobarothermally treated RC (HRC) and fermented RC (FRC) showing better laying performance than raw RC (RRC). FRC is recommended for its superior laying performance and egg quality compared to RRC and HRC.
Article
Environmental Sciences
Zhikang Zhong, Chao Wang, Huaidan Zhang, Jiandui Mi, Juan Boo Liang, Xindi Liao, Yinbao Wu, Yan Wang
Summary: This study investigates the effect of sodium butyrate supplementation on the metatranscriptome and metaproteome of lay hen cecal microorganisms. The results show that sodium butyrate can reduce ammonia production by regulating glutamate dehydrogenase expression in cecal microorganisms.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Agriculture, Dairy & Animal Science
Chung Ming Huang, Wen Yang Chuang, Wei Chih Lin, Li Jen Lin, Sheng Chang Chang, Tzu Tai Lee
Summary: The co-fermentation of wheat bran with Aspergillus oryzae and phytase improved phosphorus and fiber utilization in laying hens, enhanced antioxidant capacity, and decreased excreta phosphorus content. Birds fed with 10% PCFWH had better egg quality, antioxidant status, and reduced excreta phosphorus compared to control.
Article
Nutrition & Dietetics
Huayou Chen, Xinyu Heng, Keyi Li, Zhen Wang, Zhong Ni, Ebin Gao, Yangchun Yong, Xin Wu
Summary: By synergistically fermenting bean dregs and soybean meal with strains and proteases, we successfully developed mineral element fermentation complexes (MEFC) that have good antioxidant effects and promote production performance. Animal experiments showed that MEFC has positive effects on blood indexes, intestinal morphology, and mineral absorption in laying hens.
FRONTIERS IN NUTRITION
(2022)
Article
Agriculture, Dairy & Animal Science
Zheng Ma, Keren Jiang, Dandan Wang, Zhang Wang, Zhenzhen Gu, Guoxi Li, Ruirui Jiang, Yadong Tian, Xiangtao Kang, Hong Li, Xiaojun Liu
Summary: This study compared the hypothalamus transcriptome profiles of Lushi blue-shelled-egg chickens and Rhode Island Red chickens, and identified potential core genes responsible for the egg-laying rate difference between the two breeds. These findings pave the way for investigating the mechanism of egg-laying regulation and enrich the theory of chicken reproductive regulation.
Article
Agriculture, Dairy & Animal Science
Markus Rodehutscord, Vera Sommerfeld, C. Roselina Angel, Douglas R. Korver
Summary: The objective of this contribution is to summarize the optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens from scientific literature. The data suggests that the NPP concentration in feed should not exceed 2.2 g NPP/kg without the use of phytase, as it shows no positive effect on performance and eggshell. The addition of phytase to the feed can reduce this value, but precise values of reduction cannot be calculated due to insufficient data.
Article
Agriculture, Dairy & Animal Science
T. Chang, J. Ngo, J. Vargas, E. Rocheford, T. Rocheford, D. Ortiz, D. M. Karcher, T. A. Johnson
Summary: Further investigation is needed to determine the impact of carotenoids from different corn sources on the chicken microbiome. This study found that the cecal bacterial community composition differed significantly in chickens fed orange corn compared to white corn, but there was no difference between yellow corn and the other groups.
Article
Agriculture, Dairy & Animal Science
Markus Rodehutscord, Vera Sommerfeld, C. Roselina Angel, Douglas R. Korver
Summary: The optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens was summarized from scientific literature. The results showed that increasing the NPP concentration above 2.2 g NPP/kg of feed without phytase supplementation did not have a positive effect on performance and eggshell quality. Therefore, laying hens in different stages of production require no more than 2.2 g NPP/kg of feed. This value can be reduced when phytase is added to the feed, but there are insufficient data to determine the precise reduction rate.
Article
Agriculture, Dairy & Animal Science
Lara A. van Veen, Anna C. M. van den Oever, Bas Kemp, Henry van den Brand
Summary: Daily farm management is crucial for laying hen health, welfare, and productivity. However, there is a lack of sensor-based support for farmers. A survey was conducted to identify important indicators for assessing laying hen health and welfare, and stakeholders expressed interest in using cameras and microphones. The integration and visualization of collected data into a monitoring system were also highlighted.
Article
Agriculture, Dairy & Animal Science
Tzuen-Rong J. Tzeng, Tzu-Yu Liu, Chiao-Wei Lin, Pei-En Chang, Pei-Xin Liao, Wen-Yuan Yang, Chih-Yuan Cheng, Pei-Chun Liao, Wen-Dee Chiang, Shih-Torng Ding, Yuan-Yu Lin
Summary: The study shows that Hydrastis canadensis can improve egg albumen height and modulate the cecum digesta microbiota composition of laying hens, providing additional health benefits for the chickens.
Article
Agriculture, Dairy & Animal Science
Yoo-Bhin Kim, Sang-Hyeok Lee, Da-Hye Kim, Hyun-Gwan Lee, Yongjun Choi, Sung-Dae Lee, Kyung-Woo Lee
Summary: This study aimed to evaluate the effects of organic and inorganic sulfur on laying hens. The results showed that both types of sulfur had positive effects on ileal morphology and antioxidant capacity in laying hens. However, sodium sulfate inhibited laying performance and further research is needed.
Article
Agriculture, Dairy & Animal Science
Kai -Min Niu, Yong Feng Wang, Xiaoxiao Liang, Zhenya Zhai, Jianping Liu, Ruxia Wang, Guoshun Chen, Xin Wu
Summary: The effects of dietary supplementation of Lactobacillus plantarum-fermented B. papyrifera on laying hens were investigated. The results showed that the inclusion of fermented BP improved feed intake, egg yolk color, and lipid metabolism, but may decrease eggshell quality at higher inclusion levels.
Article
Agriculture, Dairy & Animal Science
Er-Ying Hao, De-He Wang, Yi-Fan Chen, Rong-Yan Zhou, Hui Chen, Ren-Lu Huang
Summary: This study found that reproductive aging in avian species is related to the mTOR signaling pathway, with different manifestations in the peak and late phases of egg production. The mTOR activity is age-specific, and a compensatory enhancement of the mTOR signaling cascade can regulate ovarian follicular development in aged laying hens.
Article
Agriculture, Dairy & Animal Science
Yu Fu, Jing Wang, Hai-jun Zhang, Shu-geng Wu, Jian-min Zhou, Guang-hai Qi
Summary: The study found that reducing dietary chloride and substituting part of it with sodium bicarbonate or sodium sulfate can improve laying performance and eggshell quality. This improvement is attributed to enhanced eggshell ultrastructure and increased supply of eggshell calcium carbonate, with no significant difference between the two substitutes.
Article
Environmental Sciences
Radoslav Georgiev, Hristo Kalaydzhiev, Anton Slavov, Petya Ivanova, Galina Uzunova, Vesela Chalova
Summary: The study focused on the biochemical and functional characterization of deproteinized rapeseed meal residue (DRM) and found that it is rich in proteins, dietary fibers, and micronutrients. DRM exhibited a pH-dependent water absorption capacity (WAC) with significant influence of NaCl addition observed in alkaline media. The results suggest the potential utilization of DRM as a value-added product in the food industry.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Food Science & Technology
Teodora Yaneva, Rada Dinkova, Velitchka Gotcheva, Angel Angelov
Summary: This study aimed to enrich a probiotic oat beverage with antioxidants by adding chokeberry juice and evaluated the impact of different quantities of chokeberry juice on the antioxidant activity of the beverage and the fermentation potential of Lactobacillus plantarum Pro. Results showed that adding up to 20% chokeberry juice did not inhibit the growth and fermentation activity of the probiotic starter culture, and adding chokeberry juice before fermentation led to higher antioxidant activity in the beverage compared to adding it after fermentation.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)
Article
Food Science & Technology
Radoslav Georgiev, Hristo Kalaydzhiev, Petya Ivanova, Cristina L. M. Silva, Vesela Chalova
Summary: The study demonstrates that protein isolates obtained from industrial rapeseed meal through a specific preparation approach exhibit excellent functional and antioxidant properties. PI10.5-2.5, in particular, shows high water and oil absorption capacities, good emulsion stability, and strong scavenging abilities on DPPH and hydroxyl radicals.
Article
Parasitology
Darko Marinkovic, Pavle Gavrilovic, Dejan Vidanovic, Dusko Cirovic, Milica Kurucki, Nikola Vaskovic, Milan Anicic
Summary: This article describes a case of alveolar hydatid disease in a golden jackal, providing evidence that the golden jackal can serve as an aberrant intermediate host for E. multilocularis.
ACTA PARASITOLOGICA
(2022)
Article
Biotechnology & Applied Microbiology
Milena Misic, Branislava Kocic, Aleksandra Arsovic, Jelena Cukic, Dejan Vidanovic, Milanko Sekler, Dejan Baskic
Summary: This study investigated the distribution and prevalence of MLS resistance genes and phenotypes in enterococcal isolates from community and hospital settings. The most frequent MLS resistance phenotype was cMLSb, with enterococci being a major reservoir of ermB, lsaA, and lnuA genes.
JOURNAL OF ANTIBIOTICS
(2022)
Article
Food Science & Technology
Rosen Chochkov, Daniela Savova-Stoyanova, Maria Papageorgiou, Joao Miguel Rocha, Velitchka Gotcheva, Angel Angelov
Summary: This study aimed to produce gluten-free bread using single cultures of Pediococcus acidilactici, Pediococcus pentosaceus, and Enteroccocus durans as sourdoughs. The addition of xanthan gum, guar gum, and carboxymethyl cellulose improved the structural and baking properties of the gluten-free dough. Enterococcus durans showed the best baking characteristics and highest softness of the bread during storage, while Pediococcus pentosaceus had the most positive effect on aroma, taste, and aftertaste. Pan baking was found to be more suitable for obtaining stable shape and good-looking products.
Article
Food Science & Technology
Mariya A. Dushkova, Apostol T. Simitchiev, Hristo R. Kalaydzhiev, Petya Ivanova, Nikolay D. Menkov, Vesela Chalova
Summary: This study determined the equilibrium moisture contents (EMC) of deproteinized rapeseed meal (DRM) and model extrudate at different temperatures and water activities. The results showed that the model extrudate had lower sorption capacity and greater hysteresis loop than DRM. The modified Oswin and GAB models were found suitable for describing the relationship between EMC, water activity, and temperature. The study demonstrated the usability of DRM for producing a model extrudate suitable for long-term storage.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)
Article
Microbiology
Mariana Petkova, Velitchka Gotcheva, Milena Dimova, Elena Bartkiene, Joao Miguel Rocha, Angel Angelov
Summary: Lactiplantibacillus plantarum has antimicrobial properties against Ps. syringae and B. cinerea, making it a potential biocontrol agent for table grape production.
Article
Agriculture, Dairy & Animal Science
Biljana Djurdjevic, Vladimir Polacek, Marko Pajic, Tamas Petrovic, Ivana Vucicevic, Dejan Vidanovic, Sanja Aleksic-Kovacevic
Summary: A novel highly pathogenic H5N8 avian influenza virus was transmitted through migratory birds in Europe in 2016 and 2017. It first appeared in wild birds in Serbia and then spread to backyard poultry. In 2021/2022, new cases of avian influenza with the H5N1 subtype were reported. This study aims to describe the outbreaks in backyard chickens and identify the virus, confirming severe systemic disease with neurological symptoms.
Article
Microbiology
Vesselin Baev, Elena Apostolova, Velitchka Gotcheva, Miglena Koprinarova, Maria Papageorgiou, Joao Miguel Rocha, Galina Yahubyan, Angel Angelov
Summary: Sourdoughs are microbial ecosystems composed of lactic acid bacteria and acid-tolerant yeasts, which significantly impact the characteristics of bakery products. By studying the microbial communities in Bulgarian sourdoughs, we found that the composition of the microbiome varies significantly depending on geographical location, potentially due to climate and geographic factors.
Article
Biotechnology & Applied Microbiology
Miluska Cisneros-Yupanqui, Vesela I. Chalova, Hristo R. Kalaydzhiev, Dasha Mihaylova, Albert I. Krastanov, Anna Lante
Summary: This study focused on optimizing an ultrasound assisted extraction (UAE) of antioxidant bioactive compounds from rapeseed meal ethanol-wash solutes (EWS) and fortifying rapeseed oil with the best extract obtained. The combination of amplitude and time of 10%-9.24 min and 15%-0.76 min achieved the optimum values of total phenolic compounds (TPC) and antioxidant activity (AOA), and the extracted compounds were mainly phenylacetic acid and ferulic acid. The fortification of rapeseed oil with the optimum extracts delayed oxidation up to 61%.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Virology
Steven Van Borm, Simon Dellicour, Darren P. Martin, Philippe Lemey, Eirini I. Agianniotaki, Eleni D. Chondrokouki, Dejan Vidanovic, Nikola Vaskovic, Tamas Petrovic, Sava Lazic, Xhelil Koleci, Ani Vodica, Igor Djadjovski, Kiril Krstevski, Frank Vandenbussche, Andy Haegeman, Kris De Clercq, Elisabeth Mathijs
Summary: This study analyzes the global and regional dynamics of the Lumpy skin disease virus (LSDV) outbreak in southeastern Europe by fine-grained sampling of whole genomes and combining them with public genomes. The study highlights the limited genetic variability in the outbreak region and explores the correlation between genetic and geographic distances. It also emphasizes the importance of careful selection and application of phylodynamic approaches to DNA viruses and the importance of whole genome sampling in endemic and outbreak areas to improve our understanding of DNA virus evolution, epidemiology, and transmission dynamics.
JOURNAL OF VIROLOGY
(2023)
Article
Chemistry, Multidisciplinary
Anton Slavov, Hristo Spasov, Rada Dinkova, Petko Denev, Ivayla Dincheva, Mariyana Georgieva Topuzova, Vesela Chalova
Summary: This study explores the potential of using byproducts of the essential rose oil industry to prepare aromatized wine-type beverages. The findings show that these beverages can have distinctive and pleasant rose aromas, as well as increased polyphenol content. This method contributes to the diversification of the wine market and the valorization of byproducts, while aligning with the concept of circular economy.
APPLIED SCIENCES-BASEL
(2023)
Article
Food Science & Technology
Valentina Lacivita, Adriana Lordi, Hristo Kalaydzhiev, Vesela I. Chalova, Matteo A. Del Nobile, Amalia Conte
Summary: The potential of sunflower meal ethanol-wash powder (SEWP) as an antimicrobial agent in liquid foods was investigated. Different concentrations of SEWP were tested for their antimicrobial efficacy against various spoilage bacteria in vitro, as well as in real food matrices such as soymilk and apple juice. Results showed that SEWP had moderate effects against target microorganisms in vitro, but different microbial evolutions were observed in the two food matrices. The lowest SEWP concentration (1% w/v) demonstrated the best result as a bioprotectant, extending the shelf life of apple juice for more than 21 days.
Article
Food Science & Technology
Angel Angelov, Aneliya Georgieva, Mariana Petkova, Elena Bartkiene, Joao Miguel Rocha, Manol Ognyanov, Velitchka Gotcheva
Summary: Exopolysaccharides (EPSs) produced by lactic acid bacteria have significance in the food industry for improving the quality of food products. Sucrose was found to be the best carbon source for EPS production, while glucose-based culture medium resulted in the highest biomass accumulation. The yield and composition of EPS varied depending on the carbon source used.
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.