I Asgari, A Rasooli, M Mohebbi-Fani, S S Shekarforoush, S Hosseinzadeh, A Omidi, N Najafi Tire Shabankare
{"title":"伊朗法尔斯选定奶牛场新鲜牛初乳的免疫学和细菌学质量及被动免疫转移。","authors":"I Asgari, A Rasooli, M Mohebbi-Fani, S S Shekarforoush, S Hosseinzadeh, A Omidi, N Najafi Tire Shabankare","doi":"10.22099/IJVR.2021.41453.6022","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The quality of colostrum is affected by IgG level and microbial load.</p><p><strong>Aims: </strong>The quality of colostrum used in feeding dairy calves and passive immunity transfer in selected dairy farms in Fars province, Iran was investigated.</p><p><strong>Methods: </strong>A total of 75 colostrum and neonatal blood samples were collected from 11 herds. The immunological quality of colostrum was assessed using a Brix digital refractometer. The bacteriological quality was assessed by performing total plate count (TPC), total coliform count (TCC), spore-former count, fungi count, and species-specific PCR assay to detect some bacterial species.</p><p><strong>Results: </strong>The mean Brix of colostrum samples was 25.4% and 72% of the samples had a Brix score ≥22%. The mean serum Brix and the prevalence of failure of passive transfer (FPT) were 10% and 4%, respectively. The mean TPC, TCC, spore-former count, and fungi count were 3.6 × 10<sup>5</sup>, 2.8 × 10<sup>4</sup>, 3.2 × 10<sup>4</sup>, and 1.1 × 10<sup>4</sup> CFU/ml, respectively. The results showed that 50, 5.9, and 4% of colostrum samples were positive for <i>Staphylococcus</i> spp., <i>Salmonella</i> spp. and <i>Maycobacterium paratuberculosis</i>, respectively. There was no evidence of contamination with <i>Brucella</i> spp., <i>Corynebacterium bovis</i> and <i>Mycoplasma bovis.</i></p><p><strong>Conclusion: </strong>Considering all colostrum quality indicators comprehensively, only 37.3% of the studied samples met the industry standard. A large number of calves were at risk of receiving poor quality colostrum, especially in terms of microbial contamination. Further researches are needed to evaluate the colostrum management and the effect of bacterial contamination of colostrum on the health of neonate calves in this region.</p>","PeriodicalId":14629,"journal":{"name":"Iranian journal of veterinary research","volume":"23 2","pages":"95-103"},"PeriodicalIF":0.8000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9441159/pdf/jvr-23-95.pdf","citationCount":"0","resultStr":"{\"title\":\"Immunological and bacteriological quality of fresh cow colostrum and passive immunity transfer in selected dairy farms in Fars, Iran.\",\"authors\":\"I Asgari, A Rasooli, M Mohebbi-Fani, S S Shekarforoush, S Hosseinzadeh, A Omidi, N Najafi Tire Shabankare\",\"doi\":\"10.22099/IJVR.2021.41453.6022\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>The quality of colostrum is affected by IgG level and microbial load.</p><p><strong>Aims: </strong>The quality of colostrum used in feeding dairy calves and passive immunity transfer in selected dairy farms in Fars province, Iran was investigated.</p><p><strong>Methods: </strong>A total of 75 colostrum and neonatal blood samples were collected from 11 herds. The immunological quality of colostrum was assessed using a Brix digital refractometer. The bacteriological quality was assessed by performing total plate count (TPC), total coliform count (TCC), spore-former count, fungi count, and species-specific PCR assay to detect some bacterial species.</p><p><strong>Results: </strong>The mean Brix of colostrum samples was 25.4% and 72% of the samples had a Brix score ≥22%. The mean serum Brix and the prevalence of failure of passive transfer (FPT) were 10% and 4%, respectively. The mean TPC, TCC, spore-former count, and fungi count were 3.6 × 10<sup>5</sup>, 2.8 × 10<sup>4</sup>, 3.2 × 10<sup>4</sup>, and 1.1 × 10<sup>4</sup> CFU/ml, respectively. The results showed that 50, 5.9, and 4% of colostrum samples were positive for <i>Staphylococcus</i> spp., <i>Salmonella</i> spp. and <i>Maycobacterium paratuberculosis</i>, respectively. There was no evidence of contamination with <i>Brucella</i> spp., <i>Corynebacterium bovis</i> and <i>Mycoplasma bovis.</i></p><p><strong>Conclusion: </strong>Considering all colostrum quality indicators comprehensively, only 37.3% of the studied samples met the industry standard. A large number of calves were at risk of receiving poor quality colostrum, especially in terms of microbial contamination. Further researches are needed to evaluate the colostrum management and the effect of bacterial contamination of colostrum on the health of neonate calves in this region.</p>\",\"PeriodicalId\":14629,\"journal\":{\"name\":\"Iranian journal of veterinary research\",\"volume\":\"23 2\",\"pages\":\"95-103\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9441159/pdf/jvr-23-95.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Iranian journal of veterinary research\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.22099/IJVR.2021.41453.6022\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"VETERINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian journal of veterinary research","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.22099/IJVR.2021.41453.6022","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
Immunological and bacteriological quality of fresh cow colostrum and passive immunity transfer in selected dairy farms in Fars, Iran.
Background: The quality of colostrum is affected by IgG level and microbial load.
Aims: The quality of colostrum used in feeding dairy calves and passive immunity transfer in selected dairy farms in Fars province, Iran was investigated.
Methods: A total of 75 colostrum and neonatal blood samples were collected from 11 herds. The immunological quality of colostrum was assessed using a Brix digital refractometer. The bacteriological quality was assessed by performing total plate count (TPC), total coliform count (TCC), spore-former count, fungi count, and species-specific PCR assay to detect some bacterial species.
Results: The mean Brix of colostrum samples was 25.4% and 72% of the samples had a Brix score ≥22%. The mean serum Brix and the prevalence of failure of passive transfer (FPT) were 10% and 4%, respectively. The mean TPC, TCC, spore-former count, and fungi count were 3.6 × 105, 2.8 × 104, 3.2 × 104, and 1.1 × 104 CFU/ml, respectively. The results showed that 50, 5.9, and 4% of colostrum samples were positive for Staphylococcus spp., Salmonella spp. and Maycobacterium paratuberculosis, respectively. There was no evidence of contamination with Brucella spp., Corynebacterium bovis and Mycoplasma bovis.
Conclusion: Considering all colostrum quality indicators comprehensively, only 37.3% of the studied samples met the industry standard. A large number of calves were at risk of receiving poor quality colostrum, especially in terms of microbial contamination. Further researches are needed to evaluate the colostrum management and the effect of bacterial contamination of colostrum on the health of neonate calves in this region.
期刊介绍：
The Iranian Journal of Veterinary Research(IJVR) is published quarterly in 4 issues. The aims of this journal are to improve and expand knowledge in all veterinary fields. It is an international journal indexed by the Thomson Institute for Scientific Information (ISI), Elsevier, Scopus, CAB International, Veterinary Bulletin and several other international databases. Research papers and reports on a wide range of veterinary topics are published in the journal after being evaluated by expert reviewers.The Editor-in-Chief is responsible for the editorial content of the journal—including peer-reviewed manuscripts—and the timing of its publication.
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