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1. Epidemiology of Sub-Clinical Mastitis in Dairy Cows in Urban Areas of Chittagong, Bangladesh

Author

Shariful Islam, Shama Ranjan Barua, Ariful Islam, Shahnaj Parvin Moni, Helal Uddin, Jinnat Ferdous, Md Kaisar Rahman, Mohammad Mahmudul Hassan, A.K.M. Anisur Rahman, and Sharmin Chawdhury

Subjects
epidemiology, sub-clinical mastitis, cow, bangladesh, risk factors, Agriculture, Agriculture (General), S1-972
Abstract

Mastitis is considered to be the most devastating condition for the dairy farms of low and medium income countries due to its alarming impact on production and worldwide has been recognized as one of the most economically significant infectious diseases affecting the welfare of dairy animal. Chittagong is one of the dairy intensive regions of Bangladesh but comprehensive epidemiological studies addressing prevalence of and risk factors for subclinical mastitis (SCM) are scant. Therefore we aimed to approximate the prevalence of SCM in dairy cows along with the associated risk factors in dairy cows of Chittagong Metropolitan Area (CMA), Bangladesh. We included 114 cross breed (Holstein × Local) lactating cows, raised at 6 dairy farms in CMA between February to November, 2015 for this study. California Mastitis Test (CMT) was used to assess SCM at animal level. The overall prevalence of mastitis was 34.2% among the tested cows. Floor type, source of replacement cows, history of previous reproductive disorder, stage of lactation and cleanliness of floor was found significantly associated with SCM in univariate analysis. In random effect multiple logistic regression model, cemented floor was found to increase the odds of SCM by 5.03 times than that of brick floor. Similarly, cows with history of reproductive disorders had more risk of having SCM than that of cows without a history of reproductive disorders. Since the SCM is prevalent in the study area, the intervention strategy should focus on causal agent, improved management, frequent monitoring of SCM in milking cows with CMT and use of teat disinfectants; with minimal or no treatment with antimicrobial agents.

Published
2019
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2. Efficacy of anthelmintics against parasitic infections and their treatment effect on the production and blood indices in Black Bengal goats in Bangladesh

Author

QAMAR BANU, MOHAMMAD BELAYET HOSSAIN, SAHANEAZ ALI KHAN, SKM AZIZUL ISLAM, MD AHASANUL HOQUE, and MOHAMMAD MAHMUDUL HASSAN

Subjects
General Veterinary, Key words: Black Bengal goat,anthelmintics,efficacy,hematological and biochemical parameters,body weight
Abstract

The Black Bengal goat is an important livestock animal in Bangladesh. To assess the efficacy of selective anthelmintics against ecto- and endoparasites of Black Bengal goats and their treatment effects on body-weight gains and hematobiochemical indices, a field trial was conducted at Pahartali Thana in Chittagong district. The study was performed during the period of February 2006 to January 2007. Goats were treated with CEVAMEC®-1% (ivermectin) (T1), ENDEX®-1500 (triclabendazole along with levamisole) (T2), and a placebo (T3, untreated). A reduction of eggs per gram count was very significant from day 7 (91.3% reduction) through day 28 (100%) with the treatment of ivermectin. The reduction rate of eggs per gram was also significant with the treatment of triclabendazole along with levamisole (75.8%-94.7%). Both of the drugs were equally significant against endoparasitic infections of goats in this study (P < 0.05; t-test). The percentage efficacy of ivermectin was also recorded against ticks and lice of goats from day 7 through day 28 of the trial period. The packed cell volume and hemoglobin levels increased significantly (P < 0.05) in both of the treated groups (T1 and T2), which was indicative of effective treatments of those trial drugs. The total serum protein and calcium levels also increased significantly (P < 0.05) in both of the treated groups (T1 and T2) as compared to the untreated group (T3), which was also suggestive of effective treatment. The level of serum glutamate pyruvate transaminase (SGPT) and serum glutamate oxaloacetate transaminase (SGOT) declined significantly (P < 0.05) in both of the treated groups (T1 and T2). This result also indicates the success of those drug actions against endoparasites of goats. In conclusion, either of the drug regimens can be used against parasitic infections of backyard goats. However, in order to design a proper anthelmintic schedule against parasitic infections in backyard goats, a long-term trial, covering seasons of a calendar year, needs to be conducted.

Published
2014

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