Latest ArticlesTo investigate the preventive and therapeutic effects of a self-formulated traditional Chinese medicine compound on bovine mastitis.
The in vitro antibacterial activity of this compound against the main pathogens causing bovine mastitis was determined, and its clinical efficacy was evaluated.
The minimum inhibitory concentration (MIC) of the traditional Chinese medicine compound against Staphylococcus aureus and Streptococcus agalactiae was 31.25 mg/mL, and the MIC against Escherichia coli was 62.5 mg/mL, indicating moderate sensitivity. The results of different drug interventions showed that the high-dose group of the traditional Chinese medicine compound had the highest clinical efficacy and cure rate, reaching 100% and 83.33%, respectively; followed by the antibiotic group, with an efficacy rate of 83.33% and a cure rate of 66.67%; the medium-dose group of the traditional Chinese medicine compound had an efficacy rate of 66.67%; and the low-dose group of the traditional Chinese medicine compound had the worst effect, with an efficacy rate of 50% and a cure rate of 16.67%. After medication, the somatic cell count (SCC) of milk in all groups decreased significantly (P< 0.05) ; among them, the SCC of milk in the medium-dose group, high-dose group, and antibiotic group were all below 200000 cells/mL, namely 19.35±0.32, 11.32±0.44, and 14.52±0.21×104 cells/mL, respectively. Compared with the blank control group, the average daily feed intake of dairy cows in each medication group increased significantly (P<0.05) ; the milk yield of the medium and high dose groups of the traditional Chinese medicine compound increased significantly (P<0.05) , and the milk-to-feed ratio showed an upward trend (P>0.05) .
This traditional Chinese medicine compound can effectively inhibit the proliferation of Staphylococcus aureus, Streptococcus agalactiae, and Escherichia coii, and has a good therapeutic effect on mastitis in dairy cows, which can significantly reduce the somatic cell count of milk; the high-dose compound is more effective than conventional antibiotics, and can also increase the feed intake and milk yield of sick dairy cows, and improve their health status.
To evaluate the application effect of probiotic preparations in the health management of dairy cows, this study took lactating cows from a large-scale dairy farm in Yishui County, Shandong Province, as the research subjects.A controlled trial method was used to systematically analyze the effects of probiotic preparations on the incidence of mastitis, milk quality, and milk production performance.
Healthy lactating Holstein cows were randomly divided into a control group and a probiotic group.The control group was fed a basic diet, while the experimental group received the same diet supplemented with a compound probiotic preparation.The trial lasted for a continuous feeding period.By recording the incidence of mastitis and measuring milk quality indicators (somatic cell count, milk fat percentage, milk protein percentage, and lactose percentage) as well as milk production performance indicators (daily milk yield and milk production stability), a comprehensive evaluation of the application effect of the probiotic preparation was conducted.
The results showed that compared with the control group, the incidence of mastitis in the probiotic group was significantly reduced (P<0.05), somatic cell count in milk decreased significantly (P<0.01), and both milk fat and protein percentages increased to varying degrees (P<0.05), while lactose percentage showed no significant difference (P>0.05). The probiotic group showed a higher average daily milk yield than that of the control group, though the difference was not significant (P>0.05), and exhibited better production stability; however, milk production stability was significantly better than that of the control group.Additionally, the probiotic group exhibited a lower incidence of subclinical mastitis compared to the control group, with a corresponding decrease in the average subclinical mastitis score, suggesting a reduced risk of subclinical mastitis.Regarding milk conductivity, the probiotic group demonstrated lower conductivity levels than the control group, indicating that probiotic preparations can alleviate the inflammatory burden on mammary glands and improve overall mammary gland health.
In conclusion, probiotic preparations can reduce the risk of mastitis by improving dairy cow health and reducing mammary gland inflammation, enhance milk quality, and increase lactation stability, demonstrating good potential for practical application and promotion.
This study used white kidney bean cooked powder as the raw material to investigate the effects of the ratio of ingredients on the physicochemical properties, sensory evaluation, and antioxidant activity of white kidney bean plant-based yogurt.
By setting different ratios of ingredients (1∶6, 1∶8, 1∶10, 1∶12, 1∶14) , the pH value, water holding capacity, particle size, zeta potential, total flavonoid content, antioxidant activity (DPPH and ABTS⁺ free radical scavenging rate) , and sensory evaluation of yogurt were explored.
As the ratio of ingredients decreased, the total soluble solids and total flavonoid contents in the yogurt and its antioxidant activity showed a downward trend, and reached the lowest level at a ratio of 1∶14. When the ratio of ingredients was 1∶10, the system exhibited the best stability and sensory quality, specifically: pH value of 4.48, water holding capacity of 43.60%, particle size of 481.1 nm, zeta potential of 25.59 mV, and sensory evaluation of 81.7 points.
The white kidney bean yogurt prepared under the condition of a 1∶10 ratio of ingredients achieved the optimal balance in terms of physicochemical stability, sensory quality, and antioxidant activity.
In recent years, consumers' attention to the health attributes of food has been continuously increasing, and "reducing sugar and fat" has become a new demand for product development. Traditional ice cream products, due to their high sugar and high fat properties, have witnessed a year-on-year decline in market sales. Therefore, developing a new product that combines the health benefits with the sensory characteristics of ice cream-a refrigerated and frozen "dual consumption" fully fermented ice cream yogurt (which remains in a yogurt state at 2~6 ℃ and in an ice cream state at 18 ℃) is expected to gain consumers' attention and favor. This paper elaborated on the definitions of ice cream and yogurt and the current development status of the industry, analyzed the microbiological basis of fully fermented products, and discussed the formulation design and texture regulation strategies of refrigerated and frozen "dual consumption" refrigerated and frozen ice cream yogurt. Finally, it summarized the challenges and future development trends faced in the current industrialization process.
To establish an ion chromatography method for the determination of xylitol, erythritol, sorbitol and maltitol in infant formula.
Dionex CarboPacTM MA1 sugar column guard column (4 mm×50 mm) and Dionex CarboPacTM MA1 sugar analysis column (4 mm×250 mm) were used as chromatographic columns, 480mmol/L sodium hydroxide eluent was used for isocratic elution, the flow rate was 0.45mL/min, the injection volume was 10μL, the column temperature was 30℃, and the electrochemical detector was detected.
The mass concentration showed a good linear relationship with its peak area in the range of 0.2~20 μg/mL (r2≥0.99969) , the detection limit was between 0.01~0.20 μg/mL, the average recovery rate was 91.8%~99.1%, and the relative standard deviation (RSD) was in the range of 0.9%~2.9%.
This method was simple to operate, had high sensitivity and good stability, and could provide a reference for the quality control of infant formula.
In the industrial production of dairy products, incomplete equipment cleaning can lead to microbial contamination and affect product quality. To further optimize the traditional Cleaning in Place (CIP) cleaning parameters, this study focused on the milk collection line and optimized the sequence of alkaline circulation cleaning. The alkaline circulation time was shortened from 900 seconds to 600 seconds, and the pulse frequency was reduced.
Residual water samples were collected at multiple time points after cleaning, and the hygiene of 5 key sampling points was verified using the ATP rapid detection method. Data analysis was conducted using the two-sample T test.
All ATP detection values after optimization were below the standard limit (100 RLU) .
While ensuring the cleaning effect, it is possible to effectively reduce cleaning time and resource consumption, providing a reference basis for the energy-saving optimization and risk assessment of the CIP cleaning process in dairy product enterprises.
This paper systematically sorted out the evolutionary trajectory and theoretical basis of land supporting policies for dairy farming in China, and focused on the core restrictive role of the carrying capacity logic in ruminant breeding. Through policy text analysis and empirical literature research, it revealed structural predicaments faced by large-scale dairy farming at present, such as soaring feed costs and difficulties in manure disposal caused by insufficient supporting land. Combined with the cyclical fluctuation characteristics of the current dairy market, this paper demonstrated the vital significance of mandatory supporting forage land in cost reduction, efficiency improvement and industrial resilience enhancement. It was suggested to integrate the carrying capacity logic into the approval system for dairy farm construction, and pilot a rigid linkage mechanism between breeding scale and land area in major northern producing provinces, so as to provide institutional support for the high-quality development of the dairy industry.
To accurately assess the financial performance of Bright Dairy and reveal its value creation capabilities and operational shortcomings, this study constructed a comprehensive performance evaluation system with Economic Value Added (EVA) as the core metric, supplemented by traditional financial indicators. By collecting Bright Dairy's financial data over the past five years and employing EVA adjustment calculations, comparative analysis, and industry benchmarking methods, the study systematically evaluated its financial performance. The results show: Bright Dairy's EVA exhibits a fluctuating upward trend, with steadily improving value creation capabilities. However.due to rising raw material prices and intensified market competition.its EVA growth rate falls below the industry average, and deficiencies persist in cost control and asset operational efficiency. The findings indicated that EVA more accurately reflects Bright Dairy's actual operational performance. The company needs to optimize its cost management system, enhance asset turnover efficiency, and strengthen core business competitiveness to further boost value creation capabilities and support sustainable development.
To investigate the effects of a compound plant-derived additive (formulated with rosmarinic acid, carvacrol, and tea polyphenols at a ratio of 1:3:1) on growth performance, serum biochemical indicators, and rumen microbiota of weaned lambs, and to provide a theoretical basis for its application in dairy goat farming.
A total of 120 healthy 50-day-old weaned Saanen dairy goats were randomly divided into a control group and a treatment group, each with 60 lambs (10 replicates, 6 lambs per replicate). The control group was fed a basal diet, while the treatment group received the basal diet supplemented with 5.0 g/kg of the compound plant-derived additive. The trial lasted 90 days. Growth performance, serum biochemical parameters, and the relative abundance of rumen microbiota were measured.
Compared with the control group, the treatment group showed significant increases in final body weight (16.90%) and average daily gain (38.89%) (P<0.05), and a significant decrease in feed-to-gain ratio (26.48%) (P<0.05). Serum levels of triglyceride (TG), globulin (GLB), and total protein (TP) were significantly increased by 95.83%, 27.72%, and 16.09%, respectively (P<0.05). The relative abundances of Lachnospiraceae, Oscillospira, and other rumen bacteria were significantly reduced (P<0.05), while that of Succinivibrio was significantly increased by 132.87% (P<0.05).
The addition of the compound plant-derived additive to the basal diet of weaned lambs can significantly improve growth performance, serum biochemical indices, and rumen microbiota composition, indicating good potential for application in dairy goat production.
This study focused on two large-scale dairy farms in the Lanzhou region, targeting key indicators of dairy cow production performance. By systematically analyzing Dairy Herd Improvement (DHI) data, this study aimed to investigate the variation patterns of milk composition, milk urea nitrogen (MUN), somatic cell count (SCC), peak milk yield, and days to peak yield, clarify the main influencing factors, and provide data-driven support and practical guidance for precision feeding management on dairy farms.
A total of 30 consecutive DHI test records from January 2022 to December 2024 were collected from the two farms. Descriptive statistics and trend analyses were performed using SPSS 26.0 software. Combined with farm management logs (including records on diet formulation, immunization and health care, environmental regulation, etc.), the driving factors behind changes in each indicator were comprehensively analyzed to ensure scientific reliability of the results.
Milk composition was jointly influenced by dietary adjustments and genetic improvements. Farm A exhibited significant fluctuations in milk fat percentage due to modifications in feed formula, while Farm B achieved progressive annual increases in milk protein percentage through optimized protein supplementation and breeding enhancements. Both farms significantly reduced SCC values by improving barn environments and standardizing milking procedures. MUN levels remained generally stable, though energy-nitrogen balance during peak lactation requires attention. Peak milk yield showed a steady increasing trend, days to peak yield gradually decreased, and overall feeding management levels continued to improve.
Through systematic analysis of three-year DHI data, this study identified the variation characteristics and key influencing factors of production performance indicators on large-scale dairy farms in the Lanzhou region. The targeted management recommendations provided can serve as an important reference for controlling feed costs, improving milk quality, and optimizing feeding management models on dairy farms.
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