Journal of Dairy Research最新文献

In vitro antimicrobial and antibiofilm activity of phage cocktail against Mammaliicoccus sciuri, a causative agent of bovine mastitis. 噬菌体鸡尾酒对牛乳腺炎致病菌 Mammaliicoccus sciuri 的体外抗菌和抗生物膜活性。

IF 1.6 3区农林科学

Journal of Dairy Research Pub Date : 2024-08-27 DOI: 10.1017/S0022029924000384

Puthiya Maliyekkal Shahana Shirin, Archana Chandran, Pathiyarathvalappill Subrahmanian Surabhi, Ramachandran Latha Rathish, Mundakka Paramban Rahila

{"title":"In vitro antimicrobial and antibiofilm activity of phage cocktail against Mammaliicoccus sciuri, a causative agent of bovine mastitis.","authors":"Puthiya Maliyekkal Shahana Shirin, Archana Chandran, Pathiyarathvalappill Subrahmanian Surabhi, Ramachandran Latha Rathish, Mundakka Paramban Rahila","doi":"10.1017/S0022029924000384","DOIUrl":"https://doi.org/10.1017/S0022029924000384","url":null,"abstract":"In this research paper the in vitro antimicrobial and antibiofilm activity of phage cocktail against the coagulase negative Mammaliicoccus sciuri was investigated. Three M. sciuri isolates obtained from clinical bovine mastitis samples were characterized and identified by 16S rRNA gene sequencing. Bacteriophages with lytic activity against M. sciuri isolates were isolated from dairy farm effluents. Two typical phages were isolated using standard enrichment and plaque assay techniques, purified by polyethylene glycol precipitation, and morphologically characterized based on shape and size using transmission electron microscopy. This was followed by determination of host range using spot tests and stability to varying temperature, pH and UV treatment. The phage cocktail suppressed bacterial activity within 30 min of exposure. Crystal violet assay showed that the tested phages and their cocktail significantly reduced the biofilm biomass of all three M. sciuri strains compared to the untreated control in vitro within 24 h with a single dosing. Transmission electron micrography of the purified phage particle revealed an icosahedral head and a rigid contractile tail, characteristic of the class Caudoviricetes. The findings open new avenues in phage-based antimicrobial approaches for controlling contagious and teat skin opportunistic bacteria causing bovine mastitis.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142072998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relationship between body weight and hip width in dairy buffaloes (Bubalus bubalis). 奶水牛（Bubalus bubalis）体重与臀宽之间的关系。

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-05-30 DOI: 10.1017/S0022029924000311

Alvar Alonzo Cruz-Tamayo, Marco Antonio Ramírez-Bautista, Daniel Mota-Rojas, José Carlos Escobar-España, Ricardo García-Herrera, Antonio Leandro Chaves Gurgel, Tairon Pannunzio Dias-Silva, Marcos Jácome de Araújo, Juliana Caroline Santos Santana, Isadora Osorio Maciel Aguiar, Luís Carlos Vinhas Ítavo, Alfonso Juventino Chay-Canul

{"title":"Relationship between body weight and hip width in dairy buffaloes (Bubalus bubalis).","authors":"Alvar Alonzo Cruz-Tamayo, Marco Antonio Ramírez-Bautista, Daniel Mota-Rojas, José Carlos Escobar-España, Ricardo García-Herrera, Antonio Leandro Chaves Gurgel, Tairon Pannunzio Dias-Silva, Marcos Jácome de Araújo, Juliana Caroline Santos Santana, Isadora Osorio Maciel Aguiar, Luís Carlos Vinhas Ítavo, Alfonso Juventino Chay-Canul","doi":"10.1017/S0022029924000311","DOIUrl":"https://doi.org/10.1017/S0022029924000311","url":null,"abstract":"The objective of the present study was to evaluate the relationship between body weight (BW) and hip width (HW) in dairy buffaloes (Bubalus bubalis). HW was measured in 215 Murrah buffaloes with a BW of 341 ± 161.6 kg, aged between three months and five years, and raised in southeastern Mexico. Linear and non-linear regressions were used to construct the prediction models. The goodness of fit of the models was evaluated using the Akaike information criterion (AIC), Bayesian information criterion (BIC), coefficient of determination (R2), mean squared error (MSE), and root MSE (RMSE). Additionally, the developed models were evaluated through internal and external cross-validation (k-folds) using independent data. The ability of the fitted models to predict the observed values was assessed based on the root mean square error of prediction (RMSEP), R2, and mean absolute error (MAE). The relationship between BW and HW showed a high correlation coefficient (r = 0.96, P < 0.001). The chosen fitted model to predict BW was: -176.33 (± 40.83***) + 8.74 (± 1.79***) × HW + 0.04 (± 0.01*) × HW2, because it presented the lowest MSE, RMSE, and AIC values, which were 1228.64, 35.05 and 1532.41, respectively. Therefore, with reasonable accuracy, the quadratic model using hip width may be suitable for predicting body weight in buffaloes.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141174506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of double-premilking teat disinfection protocols on bacterial counts on teat skin of cows and milker gloves in a free-stall-housed dairy herd. 双重挤奶乳头消毒方案对自由挤奶厅奶牛群中奶牛乳头皮肤和挤奶工手套上细菌数量的影响。

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-05-27 DOI: 10.1017/S0022029924000335

Thiago Resin Niero, Roberto Kappes, Angelica Leticia Scheid, Andreina Ferreira Ramos, Eduardo Becker Ribeiro, Leonardo Leite Cardozo, Sandra Maria Ferraz, André Thaler Neto

{"title":"Effect of double-premilking teat disinfection protocols on bacterial counts on teat skin of cows and milker gloves in a free-stall-housed dairy herd.","authors":"Thiago Resin Niero, Roberto Kappes, Angelica Leticia Scheid, Andreina Ferreira Ramos, Eduardo Becker Ribeiro, Leonardo Leite Cardozo, Sandra Maria Ferraz, André Thaler Neto","doi":"10.1017/S0022029924000335","DOIUrl":"https://doi.org/10.1017/S0022029924000335","url":null,"abstract":"This research communication addresses the hypothesis that double premilking teat disinfection (DD) is more effective in reducing soiling and bacterial count on the cows' teat skin and milkers' gloves than conventional disinfection (CONV). The design was a 3 × 3 Latin square (three groups of cows and three treatments) with conventional teat disinfection (CONV, lactic acid application after forestripping), double teat disinfection using the same disinfectant (DD1D, lactic acid application before and after forestripping), and double teat disinfection using two different disinfectants (DD2D, application of lactic acid before and chlorine-based disinfectant after forestripping). All groups were assigned for six days for each treatment, and the evaluations and samples were collected on the last day, before and after treatment. We evaluated the teat cleanliness score (TCS), count of Gram-negative bacteria (coliforms and noncoliforms), Staphylococcus spp., Streptococcus spp., and total bacterial count (TBC) on the cows' teats and TBC on the milkers' gloves. TCS after premilking was lower in DD than CONV treatment. The reduction of Staphylococcus spp. count was greater in the DD treatment and tended to be higher in the DD2D. The TBC reduction on the cows' teats was greater in the DD treatments. The TBC on the milkers' gloves was lower for DD before and after premilking. In conclusion, DD can be an alternative for reducing some bacterial populations on cow teats and preventing the transmission of microorganisms between cows via the milkers' hands.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141154914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the relationship between heat load and shade seeking behaviour in dairy buffaloes. 调查奶水牛的热负荷与寻阴行为之间的关系。

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-05-09 DOI: 10.1017/S0022029924000256

Syed I Hussain, Muhammad A Rashid, Muhammad Q Shahid

{"title":"Investigating the relationship between heat load and shade seeking behaviour in dairy buffaloes.","authors":"Syed I Hussain, Muhammad A Rashid, Muhammad Q Shahid","doi":"10.1017/S0022029924000256","DOIUrl":"https://doi.org/10.1017/S0022029924000256","url":null,"abstract":"The study presented in this Research Communication aimed to investigate the relationship between physiological responses, body surface temperature and shade-seeking behaviour in Nili Ravi dairy buffaloes during summer months. We enrolled 60 buffaloes, and each animal was observed for three consecutive days starting before sunrise until they moved towards the shade structures. A repeated measures ANOVA was employed to assess the changes in physiological parameters and body surface temperature between the early morning and the occurrence of shade-seeking behaviour. The average temperature humidity index and heat load index during the behavioural monitoring period (0400 to 1200 h) were 81.3 ± 6.5 and 92.9 ± 17, respectively (mean ± sd). There was no significant difference in core body temperature between sunrise and the time of shade-seeking event. However, the buffaloes had a slightly higher respiration rate at the time of shade-seeking (19.2 vs. 22.4 breaths/min). In addition, body surface temperature, measured at the flank region, shoulder, base of the ear and forehead was significantly higher at the occurrence of shade-seeking behaviour compared to the early morning. On average, the buffaloes sought shade when the surface temperature was 2°C higher than the temperature recorded before sunrise. Overall, the current findings suggest that body surface temperature, rather than core body temperature was strongly associated with shade-seeking behaviour in dairy buffaloes. These findings could be useful in developing strategies to mitigate the effects of heat stress in dairy buffalo herds and thereby improve animal welfare.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140891901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genotypic insights to Panton-Valentine leukocidin positive methicillin-resistant Staphylococcus aureus isolated from cattle mastitis. 对从牛乳腺炎中分离出的潘通-瓦伦丁白细胞介素阳性耐甲氧西林金黄色葡萄球菌基因型的认识。

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-05-06 DOI: 10.1017/S0022029924000244

Muhammad Ijaz, Nauman Zaheer Ghumman, Muhammad Umar Javed, Arslan Ahmed, Hamza Rasheed, Farwa Anwaar, Muhammad Jawad Sabir, Iqra Muzammil

引用次数: 0

Impact of parity number, milk production and somatic cell count on the reproduction of Holstein cows - ERRATUM. 奇数、产奶量和体细胞数对荷斯坦奶牛繁殖的影响 - ERRATUM。

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-05-06 DOI: 10.1017/S0022029924000177

Bianca Letícia Barbosa, Victor Breno Pedrosa, Luciana da Silva Leal Karolewski, Caio César de Godoi, Adriana de Souza Martins

引用次数: 0

Implementation of hazard analysis and critical control point (HACCP) in yogurt production 在酸奶生产中实施危害分析和关键控制点 (HACCP)

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-04-22 DOI: 10.1017/s0022029924000232

Ramin Aslani, Yeganeh Mazaheri, Maryam Jafari, Parisa Sadighara, Ebrahim Molaee-aghaee, Sibel Ozcakmak, Zahra Reshadat

引用次数: 0

Effects of feeding pasteurized waste milk or saleable milk to calves on weight, health and fecal Escherichia coli antimicrobial resistance 给犊牛喂食巴氏杀菌废奶或可出售牛奶对体重、健康和粪便中大肠埃希氏菌抗菌性的影响

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-04-19 DOI: 10.1017/s0022029924000219

Ivana Cellone, Norma Russi, Luis F. Calvinho, Marcelo Signorini, Ana Molineri

{"title":"Effects of feeding pasteurized waste milk or saleable milk to calves on weight, health and fecal Escherichia coli antimicrobial resistance","authors":"Ivana Cellone, Norma Russi, Luis F. Calvinho, Marcelo Signorini, Ana Molineri","doi":"10.1017/s0022029924000219","DOIUrl":"https://doi.org/10.1017/s0022029924000219","url":null,"abstract":"The aim of this study was to compare the effects of feeding pasteurized waste milk or saleable milk to calves on weight, health and emergence of antimicrobial resistance in Escherichia coli strains isolated from those calves. An experimental study under field conditions on a commercial pasture-based Argentinian dairy farm was carried out. Forty Holstein calves were assigned randomly to either pasteurized waste milk (PWM) or non-pasteurized saleable milk (SM). The antimicrobial agents (AM) used on the farm, both to treat or prevent diseases, were recorded. The passive immunity level, calf live weight, AM presence in milk, clinical examination of calves, and E. coli isolation and identification, were performed. A total of 258 E. coli strains were isolated from fecal samples (132 isolates from SM calves and 126 from PWM calves at six sampling times). All E. coli isolated were used to perform AM susceptibility tests (disc diffusion and agar dilution). No differences were observed between groups in health parameters, average daily gain or prevalence of resistant E. coli strains to any AM evaluated throughout the study. Peaks of trimethoprim, sulfamethoxazole and enrofloxacin minimum inhibitory concentration (MIC) were observed at 30 d in E. coli from both groups of calves, whilst additional peaks to tetracyclin and ampicillin were observed only in SM calves. All MIC apart from gentamicin decreased at 75 and 90 d of age (during the weaning period). Gentamicin MIC behaved differently, having no peaks and increasing at 90 d only in PWM group. In conclusion, we found no evidence that emergence of antibiotic resistance is related to the consumption of pasteurized waste milk.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140629410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of nonlinear functions to describe lactation curves for cumulative milk production in buffalo 描述水牛累积产奶量泌乳曲线的非线性函数比较

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-04-17 DOI: 10.1017/s0022029924000062

Hassan Darmani Kuhi, Secundino López, Navid Ghavi Hossein-Zadeh, James France

{"title":"Comparison of nonlinear functions to describe lactation curves for cumulative milk production in buffalo","authors":"Hassan Darmani Kuhi, Secundino López, Navid Ghavi Hossein-Zadeh, James France","doi":"10.1017/s0022029924000062","DOIUrl":"https://doi.org/10.1017/s0022029924000062","url":null,"abstract":"The aim of this study was to examine the suitability of different growth functions (linear, sinusoidal, Gompertz, Schumacher and Richards) to fit cumulative milk production data from buffalo cows. Cumulative milk production at each day in milk was calculated from two published datasets reporting (i) fortnightly test-day milk yield records of the first lactation of Murrah buffalo that had calved during 1977–2012 and (ii) the first lactation records of Jaffarabadi buffalo collected from history-cum-pedigree registers for each quinquennium between 1991 and 2010. Each function was fitted to the lactation curves using nonlinear regression procedures. The Richards and sinusoidal equations provided the smallest root mean square error values, Akaike's and Bayesian information criteria and, therefore, the best fit for the cumulative lactation curves for milk yield. The Richards equation appeared to provide the most accurate estimate of the cumulative milk production at peak milk yield. Sinusoidal and flexible classical growth functions are appropriate to describe cumulative milk production curves and estimate lactation traits in buffalo.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quality and antioxidant potential of goat's milk paneer prepared from different citrus juices and its whey 用不同柑橘果汁及其乳清制备的山羊奶馅饼的质量和抗氧化潜力

IF 2.1 3区农林科学

Journal of Dairy Research Pub Date : 2024-04-16 DOI: 10.1017/s0022029924000190

Tahir Mahmood Qureshi, Muhammad Mobeen Saeed, Muhammad Nadeem, Ghulam Muhammad, Mian Anjum Murtaza, Salam A. Ibrahim

{"title":"Quality and antioxidant potential of goat's milk paneer prepared from different citrus juices and its whey","authors":"Tahir Mahmood Qureshi, Muhammad Mobeen Saeed, Muhammad Nadeem, Ghulam Muhammad, Mian Anjum Murtaza, Salam A. Ibrahim","doi":"10.1017/s0022029924000190","DOIUrl":"https://doi.org/10.1017/s0022029924000190","url":null,"abstract":"The experiments reported in this research paper aimed to evaluate the physico-chemical and sensory characteristics, microbial quality and antioxidant potential of goat's milk paneer during storage (0–12 d, 4 ± 1°C). The juices from five different citrus fruits were used as coagulant (treatments) to make goat's milk paneer. The pH of all paneer samples decreased during storage whereas titratable acidity increased. Ash (%) fat (%) and protein (%) of paneer increased slightly during storage, whereas sensory perception decreased. The juices from all the citrus fruit varieties showed high contents of total phenolics and total flavonoids which ultimately influenced ferric reducing antioxidant power, total antioxidant capacity and radical scavenging activities. As the contents of different juices were also retained in the paneer matrix, so paneer coagulated with citrus juices also showed encouraging results in terms of total phenolic and flavonoid contents, ferric reducing antioxidant power and radical scavenging activities. Amongst all the paneers, the most promising was that coagulated by kinnow juice. In addition, the whey obtained from paneer coagulated by citrus juices also showed appreciable quantities of total phenolic and flavonoid contents, thereby beneficially influencing ferric reducing antioxidant power andradical scavenging activities. It is concluded that citrus juices improve the sensorial quality and antioxidant potential of goat's milk paneer and its whey.","PeriodicalId":15615,"journal":{"name":"Journal of Dairy Research","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140561789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0