Effect of Intramammary Dry Cow Antimicrobial Treatment on Fresh Cow’s Milk Microbiota in California Commercial Dairies

Basbas, Carl; Aly, Sharif S.; Okello, Emmanuel; Karle, Betsy M.; Lehenbauer, Terry W.; Williams, D. E.; Ganda, Erika; Wiedmann, Martin; Pereira, Richard Van Vleck

doi:10.3390/antibiotics11070963

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…Kekhawatiran selain munculnya resistensi bakteri karena penggunaan antibiotika intramammary pada periode kering adalah munculnya potensi gangguan mikrobiota endogen yang ada di kelenjar susu sapi. Selain hal tersebut, ada risiko kontaminasi mikroorganisme lingkungan secara tidak sengaja ke dalam ambing selama proses terapi intramammary (Basbas et al, 2022). Oleh sebab itu diperlukan pemilihan penggunaan antibiotika dan penanganan yang hati hati dalam pengelolaan kesehatan sapi perah khususnya pada ambing.…”

Section: Dampak Negatif Penggunaan Antibiotika Pada Periode Keringunclassified

Dampak Terapi Antibiotika Mastitis Periode Kering pada Sapi Perah

Yanuartono,

Indarjulianto,

Paryuni

2024

Jurnal Sain Veteriner

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AbstrakPeriode kering pada sapi perah didefinisikan sebagai masa istirahat non laktasi sebelum melahirkan dengan tujuan utama meningkatkan produksi susu pada periode laktasi berikutnya. Saat ini secara umum antibiotika juga digunakan untuk terapi maupun pencegahan mastitis saat periode kering. Mastitis adalah salah satu penyakit menular yang paling penting pada sapi perah di seluruh dunia, bertanggung jawab atas kerugian ekonomi yang besar dan dampak negatif pada kesejahteraan sapi maupun manusia disebabkan oleh penurunan produksi susu. Salah satu metode yang digunakan untuk meningkatkan produksi susu pada laktasi berikutnya adalah periode kering yang berkisar antara 40-60 hari sebelum melahirkan. Guna menghindari kejadian mastitis saat periode kering maka saat ini banyak digunakan antibiotika saat memasuki periode kering atau akhir periode kering. Saat ini, sebagian besar dari antibiotika yang digunakan dalam industri susu diterapkan untuk mengendalikan mastitis pada sapi perah periode kering. Banyak Negara menerapkan system pemberian antibiotika pada semua kwartir saat periode kering. Namun demikian penggunaan antibiotika tersebut meningkatkan kekhawatiran munculnya resistensi antibiotika. Tulisan ini akan mencoba mengulas secara sederhana dampak penggunaan antibiotika saat periode kering pada sapi perah.Kata kunci : mastitis; periode kering; antibiotika; resistensi

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Section: Dampak Negatif Penggunaan Antibiotika Pada Periode Keringunclassified

Dampak Terapi Antibiotika Mastitis Periode Kering pada Sapi Perah

Yanuartono,

Indarjulianto,

Paryuni

2024

Jurnal Sain Veteriner

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Effects of Intramammary Antimicrobial Treatment on the Milk Microbiota Composition in Mild Clinical Bovine Mastitis Caused by Gram-Positive Bacteria

Hayashi

Shinozuka

Kurumisawa

et al. 2023

Animals

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The purpose of this study was to clarify the effects of antimicrobial treatment for mild mastitis caused by Gram-positive bacteria on the milk microbiota in dairy cattle. Sixteen quarters of sixteen cows with mild clinical mastitis from the same herd were included in the study. On the day of onset (day 0), the cows were randomly allocated to a no-treatment (NT; n = 10) group or an intramammary antimicrobial treatment (AMT) group that received AMT starting on day 0 (AMT-AMT group; n = 6). The next day (day 1), the cows in the NT group were randomly allocated into an NT group (NT-NT group; n = 3) that received no treatment or an AMT group that received AMT starting on day 1 (NT-AMT group; n = 7). Milk samples were collected on days 0, 1, 3 and 7, and the milk microbiota of each sample was comprehensively analyzed via 16S rRNA gene amplicon sequencing of the milk DNA. During the treatment period, the milk microbiota of the NT-NT group did not change, but those of the NT-AMT and AMT-AMT groups changed significantly on days three and seven. Thus, the use of antimicrobials for mild mastitis caused by Gram-positive bacteria changes the milk microbiota composition.

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Temporal Changes in Jejunal and Ileal Microbiota of Broiler Chickens with Clinical Coccidiosis (Eimeria maxima)

Miska,

Campos,

Cloft

et al. 2024

Animals

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Coccidiosis in broiler chickens continues to be a major disease of the gastrointestinal tract, causing economic losses to the poultry industry worldwide. The goal of this study was to generate a symptomatic Eimeria maxima (1000 oocysts) infection to determine its effect on the luminal and mucosal microbiota populations (L and M) in the jejunum and ileum (J and IL). Samples were taken from day 0 to 14 post-infection, and sequencing of 16S rRNA was performed using Illumina technology. Infected birds had significantly (p < 0.0001) lower body weight gain (BWG), higher feed conversion ratio (FCR) (p = 0.0015), increased crypt depth, and decreased villus height (p < 0.05). The significant differences in alpha and beta diversity were observed primarily at height of infection (D7). Analysis of taxonomy indicated that J-L and M were dominated by Lactobacillus, and in IL-M, changeover from Candidatus Arthromitus to Lactobacillus as the major taxon was observed, which occurred quicky in infected animals. LEfSe analysis found that in the J-M of infected chickens, Lactobacillus was significantly more abundant in infected (IF) chickens. These findings show that E. maxima infection affects the microbiota of the small intestine in a time-dependent manner, with different effects on the luminal and mucosal populations.

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Effect of Intramammary Dry Cow Antimicrobial Treatment on Fresh Cow’s Milk Microbiota in California Commercial Dairies

Cited by 3 publications

References 64 publications

Dampak Terapi Antibiotika Mastitis Periode Kering pada Sapi Perah

Dampak Terapi Antibiotika Mastitis Periode Kering pada Sapi Perah

Effects of Intramammary Antimicrobial Treatment on the Milk Microbiota Composition in Mild Clinical Bovine Mastitis Caused by Gram-Positive Bacteria

Temporal Changes in Jejunal and Ileal Microbiota of Broiler Chickens with Clinical Coccidiosis (Eimeria maxima)

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