International Journal of Dairy Science最新文献_第5页

Influence of Some Hygienic Measures on the Prevalence of Subclinical Mastitis in a Dairy Farm 某些卫生措施对某奶牛场亚临床乳腺炎流行的影响

International Journal of Dairy Science Pub Date : 2019-12-15 DOI: 10.3923/ijds.2020.38.47

N. H. Youssif, N. M. Hafiz, M. Halawa, M. F. Saad

{"title":"Influence of Some Hygienic Measures on the Prevalence of Subclinical Mastitis in a Dairy Farm","authors":"N. H. Youssif, N. M. Hafiz, M. Halawa, M. F. Saad","doi":"10.3923/ijds.2020.38.47","DOIUrl":"https://doi.org/10.3923/ijds.2020.38.47","url":null,"abstract":"Background and Objective: The hygienic measures of the farm especially during milking and the storage condition are all key agents in the count and kind of pathogen contamination present in the bulk milk, so the influence of some hygienic measures (bedding, silage, equipment swabs, worker hand swabs and SCM cow’s milk samples) of the farm on the prevalence of subclinical mastitis (SCM) pathogens was evaluated in this study. Material and Methods: Swabs (workers hands and milking equipment) silage, bedding, SCM samples were collected from dairy farm located in Fayoum district, Egypt and the different types of SCM pathogens were isolated. Bulk milk tank and water samples were subjected to count (total colony and coliforms), respectively. The significant (p<0.05) relationship between hygienic condition of environmental samples and prevalence of different subclinical mastitis pathogens was calculated. Results: In this study, 51 BTM (bulk tank milk) samples were examined through the 4 seasons of the year for the TCC, the highest mean value was 4.8×104±3.6×103 CFU mLG1 in the spring. The results of coliforms count of the examined 24 water samples from trough showed that, the highest mean value 8.3×10±3.45 MPN/100 mL was observed at the winter. Conclusion: There was a significant relation between the hygienic condition of the farm and microorganisms causing subclinical mastitis which could enter the food chain and accidently mixed with bulk tank milk which may induce health hazards to human, so adequate sanitary measures should be taken by improving the personnel, cow, equipment and farm hygiene. Producers should well know the influence of each hygienic measure on a load of microbes in raw milk and how they can control to prevent the occurrence of clinical form of mastitis.","PeriodicalId":35398,"journal":{"name":"International Journal of Dairy Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46482298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Effect of Cellulases Supplementation on Milk Yield and Feed Utilization by Baladi Goats in Early Lactation 添加纤维素酶对泌乳早期巴拉迪山羊产奶量和饲料利用的影响

International Journal of Dairy Science Pub Date : 2019-12-15 DOI: 10.3923/ijds.2020.48.53

H. Azzaz, A. Aboamer, Hoda Alzahar, Noha A. Hassaan, H. Murad

引用次数: 3

Antioxidant Properties of Milk: Effect of Milk Species, Milk Fractions and Heat Treatments 乳的抗氧化性能：乳种、乳级分和热处理的影响

International Journal of Dairy Science Pub Date : 2019-12-15 DOI: 10.3923/ijds.2020.1.9

A. A. El-Fattah, M. Azzam, Hany Elkashef, Ahmed Elhadydy

{"title":"Antioxidant Properties of Milk: Effect of Milk Species, Milk Fractions and Heat Treatments","authors":"A. A. El-Fattah, M. Azzam, Hany Elkashef, Ahmed Elhadydy","doi":"10.3923/ijds.2020.1.9","DOIUrl":"https://doi.org/10.3923/ijds.2020.1.9","url":null,"abstract":"Background and Objective: Oxidative stress is a term denoting an imbalance between the production of oxidants and the respective defense systems of an organism. Oxidants include reactive oxygen species (ROS), reactive nitrogen species (RNS) and others. Oxidative stress is deemed a causative factor of neurodegenerative disorders, cancer, liver injury, aging, diabetes, chronic pancreatitis and cardiovascular disease. In this study, the antioxidant activity of different milk species was investigated. Also, which milk components are responsible for antioxidant activity were also determined. In addition, the effect of pasteurization or sterilization on the antioxidant capacity of milk was studied. Material and Methods: The antioxidant activity of 14 different samples of cow, buffalo, goat, sheep and camel milk either raw or heat-treated by pasteurization or sterilization was investigated using DPPH radical scavenging activity, metal chelating activity and reducing power. Results: The results showed that sheep milk exhibited the strongest DPPH radical scavenging and metal chelating activities, while buffalo and sheep milk presented had the highest reducing power. Antioxidant activity of all milk fractions was lower than that of whole milk. Moreover, skim milk had the highest antioxidant capacity, while deproteinized milk was the lowest. Pasteurization did not affect the antioxidant activity of different types of milk. Sterilization led to increase the antioxidant activity of milk from different species. Conclusion: These findings indicated that sheep and buffalo milk showed the greatest antioxidant properties compared to other types of milk. Also, pasteurization did not affect the antioxidant activity of milk, while sterilization had positive effect on the antioxidant activity.","PeriodicalId":35398,"journal":{"name":"International Journal of Dairy Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43949680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Pectinase Production Optimization for Improving Dairy Animal’s Diets Degradation 优化果胶酶生产以改善奶牛日粮降解

International Journal of Dairy Science Pub Date : 2019-12-15 DOI: 10.3923/ijds.2020.54.61

H. Azzaz, H. Murad, Noha A. Hassaan, M. Fahmy

引用次数: 4

Utilizing of Celery and Thyme as Ruminal Fermentation and Digestibility Modifier and Reducing Gas Production 芹菜和百里香作为瘤胃发酵消化率调节剂及减气量的研究

International Journal of Dairy Science Pub Date : 2019-12-15 DOI: 10.3923/ijds.2020.22.27

M. Khattab, A. M. A. E. Tawab, F. Hadhoud, M. M. Shaaban

{"title":"Utilizing of Celery and Thyme as Ruminal Fermentation and Digestibility Modifier and Reducing Gas Production","authors":"M. Khattab, A. M. A. E. Tawab, F. Hadhoud, M. M. Shaaban","doi":"10.3923/ijds.2020.22.27","DOIUrl":"https://doi.org/10.3923/ijds.2020.22.27","url":null,"abstract":"Background and Objectives: Improving ruminant environmental impacts and productivity get a great interest in last years, herbal plants were investigated as feed additive for decreasing gas production from rumen and enhancing nutrients digestibility. So, in the current study was carried out to investigate the effect of supplementing ruminant diets with different levels of thyme or celery on rumen fermentation, digestibility and gas production. Materials and Methods: Seven experimental treatments were done using rumen in vitro batch culture technique. Treatments were: 60% CFM, 40% clover hay (control), control diet+5 g thyme kgG1 DM (T1), control diet+10 g thyme kgG1 DM (T2), control diet+20 g thyme kgG1 DM (T3), control diet+5 gG1 celery kgG1 DM (T4), control diet+10 gG1 celery kgG1 DM (T5), control diet+20 g celery kgG1 DM (T6), control diet+0.4 g salinomycin kgG1 DM (T7). Results: The obtained results showed no significant (p>0.05) change in ruminal pH, neutral detergent fiber (NDF) and acid detergent fiber (ADF) degradation. Thyme addition to diet (T1 and T2) significantly lowered (p<0.05) total gas production (TGP) compared with control (152, 152 vs. 157 mL, respectively). Dry matter and organic matter disappearance (DMd, OMd) appeared showed no significant difference (p<0.05) between control and thyme treatments (T1, T2 and T3) and celery treatments (T4, T5 and T6). Conclusion: It could be concluded the adding thyme or celery at low levels to ruminant diets could improve ruminal fermentation and reducing gas production without adverse effect on nutrients digestibility.","PeriodicalId":35398,"journal":{"name":"International Journal of Dairy Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44029018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Optimizing Production of Tannase and in vitro Evaluation on Ruminal Fermentation, Degradability and Gas Production 单宁酶产量优化及瘤胃发酵、降解性和产气量体外评价

International Journal of Dairy Science Pub Date : 2019-02-01 DOI: 10.3923/ijds.2019.53.60

M. Khattab, Ahmed M. Abd El Taw, H. Murad, H. Azzaz

引用次数: 9

Production Optimization of Fungal Cellulase and its Impact on Ruminal Degradability and Fermentation of Diet 真菌纤维素酶的生产优化及其对瘤胃降解和日粮发酵的影响

International Journal of Dairy Science Pub Date : 2019-02-01 DOI: 10.3923/ijds.2019.61.68

M. Khattab, H. Azzaz, A. Taw, H. Murad

引用次数: 11

Microbiological Qualities of Goat Milk Obtained under Different Milking Systems at a Smallholder Dairy Farm in Yogyakarta, Indonesia 印度尼西亚日惹一个小型奶牛场在不同挤奶系统下获得的羊奶的微生物质量

International Journal of Dairy Science Pub Date : 2018-12-15 DOI: 10.3923/IJDS.2019.29.35

Ismiarti ., Yustina Yuni Suranindya, Widodo .

{"title":"Microbiological Qualities of Goat Milk Obtained under Different Milking Systems at a Smallholder Dairy Farm in Yogyakarta, Indonesia","authors":"Ismiarti ., Yustina Yuni Suranindya, Widodo .","doi":"10.3923/IJDS.2019.29.35","DOIUrl":"https://doi.org/10.3923/IJDS.2019.29.35","url":null,"abstract":"Background and Objective: In Indonesia, smallholder dairy farms contribute 20.37% of domestic market. A small portion of these farms is from goat dairy farms that are traditionally managed with poor sanitation during milking and improper storage management. This system causes contamination that can affect consumer health and cause financial loss. This study aimed to evaluate the microbiological quality of goat milk obtained under different milking systems at a smallholder dairy farm in Yogyakarta, Indonesia. Materials and Methods: Samples were collected from 20 crossbred dairy goats divided into two groups: Group A and B. In Group A, milking was conducted manually. In Group B, milking was conducted using a bucket milking machine. Total Plate Count (TPC) and the presence of Enterobacteriaceae (EB), Shiga toxin-producing Escherichia coli (STEC) and Salmonella were assessed. Data obtained were analyzed using a t-test. Results: The results showed that TPC and EB were higher in Group A than in Group B. In Groups A and B, 80% (8/10) of samples contained STEC and 30% (3/10) contained Salmonella. Phylogenetic analysis showed that partial sequencing of amplified genomic DNA using stx1 primers had more than 90% similarity with several sequences of Escherichia coli O157:H7 strain Shiga toxin subunit 1A (stx1A) and Shiga toxin subunit 1B (stx1B). Moreover, partial sequencing of amplified genomic DNA using 16S rRNA primers had more than 90% similarity with several sequences of S. enterica. Conclusion: The results conclude that hygienic and sanitary practices in smallholder dairy goat farming are still poor as shown by the presence of pathogenic bacteria.","PeriodicalId":35398,"journal":{"name":"International Journal of Dairy Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47845321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of Functional Fermented Oat Milk by Using Probiotic Strains and Whey Protein 利用益生菌菌株和乳清蛋白研制功能性发酵燕麦乳

International Journal of Dairy Science Pub Date : 2018-12-15 DOI: 10.3923/ijds.2019.21.28

O. El-Batawy, S. Mahdy, Safaa T Gohari

引用次数: 14

Efficiency of Water Resources in Small and Medium-sized Dairy Factories in Egypt 埃及中小型奶牛厂的水资源效率

International Journal of Dairy Science Pub Date : 2018-12-15 DOI: 10.3923/IJDS.2019.1.11

W. Bahgaat, H. M. Mahrous

{"title":"Efficiency of Water Resources in Small and Medium-sized Dairy Factories in Egypt","authors":"W. Bahgaat, H. M. Mahrous","doi":"10.3923/IJDS.2019.1.11","DOIUrl":"https://doi.org/10.3923/IJDS.2019.1.11","url":null,"abstract":"Background and Objective: The dairy industry consumes great amounts of water and generates large quantities of wastewater. The study problem is the lack of available water resources which reflected in decreased average per capita water. The main objective of this study was to study the efficiency of water use in the production units, estimate the cash yield of the water unit and finally study the factors that affect them. Materials and Methods: Data were analyzed using Statistical Package for Social Sciences (SPSS) version 16. Quantitative data were presented as Means±SD. The independent sampleANOVA was used with two-way analysis of variance, with Post-hoc (LSD) test was used to analyze mean difference. Probability values (P) of less than 0.05 were regarded as statistically significant. Results: The most important results of the study suggested to the low average per capita average annual attrition rate of about 1.29% and rising share of water resources industry with a growth rate of approximately 15.1% during the study period have been measuring the significance differences between the sample in the water-use efficiency, proven statistical model significant at level p<0.05. Also, suggest the disparity in the percentage of the cost of employing and run water to an average of about 5% of total operating costs, as well as indicate low efficiency rate. Conclusion: The study concluded that a clear plan Inspection Department on how to deal with these facilities over the long term and anaerobic biological treatment in processing the high organic content industrial pollutants.","PeriodicalId":35398,"journal":{"name":"International Journal of Dairy Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45769177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0