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Bangladesh VeterinarianNumber of Followers: 0
 Open Access journal ISSN (Print) 1012-5949
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- Quality of ram semen in relation to scrotal size
Authors: S Sharmin, MM Islam, A Saha, S Akter, NS Juyena, FY Bari
Pages: 1 - 9
Abstract: Aim of this study was to select superior rams by assessing their scrotal size and quality of semen. In ten indigenous Bangladeshi rams, the body weight, scrotal circumference, and scrotal volume of rams increased with age (P<0.05). Body weight at 381-410 days (13.6 ± 1.5 kg) was higher than at 169-200 days (10.2 ± 0.1 kg) and 201-230 days (10.4 ± 1.2 kg) (p<0.05). Scrotal circumference at 381 - 410 days (19.1 ± 0.3 cm) was higher (p<0.05) than at 169 - 200 days (17.2 ± 0.1 cm), 201 - 230 days (17.2 ± 0.6 cm), and 231 - 260 days (17.2 ± 0.5 cm). At 381 - 410 days, scrotal volume (87.4 ± 5.5 cm3) was higher than in the five youngest groups (p<0.05). Both scrotal circumference and volume were positively correlated (R2=0.519) with the increased body weight. Semen volume increased with age, which varied from 0.4 ± 0.0 - 1.2 ± 0.3 ml. The semen volume at 381 - 410 days (1.2 ± 0.3 ml) was higher than other age groups (P<0.05) except for 351 - 380 days. The mass activity of sperms of different age groups varied from 2.8 ± 0.4 to 4.3 ± 0.3. Sperm concentration, progressive motility (%), and normal spermatozoa (%) improved progressively with age, but significant changes in these parameters were seen when the animals reached 291 days or more (P<0.05). However, normal spermatozoa (%) improved from the age of 261 days. The mass activity was positively correlated with sperm concentration (R2 = 0.568) and with progressive motility (%) (R2 = 0.616). Measurements of scrotum could provide a reliable guide in estimating sperm production capacity, which are important for breeding soundness evaluation, and genetic improvement of indigenous rams. Bangl. vet. 2021. Vol. 38, No. 1-2, 1–9
PubDate: 2022-12-31
DOI: 10.3329/bvet.v38i1-2.63671
Issue No: Vol. 38, No. 1-2 (2022)
- Prevalence and pathology of colibacillosis in broiler farms at Dinajpur
Sadar Upazila
Authors: R Khatun, MG Azam, MM Islam, M Akther, SMH Rashid
Pages: 10 - 16
Abstract: This study was carried out to investigate the prevalence and pathological lesions of avian colibacillosis in commercial broiler farms at Dinajpur Sadar Upazila (Sub-district) from July to December 2018. A total of 8800 birds from six farms were diagnosed with colibacillosis from clinical signs, post-mortem lesions and histopathological changes. Highest prevalence was in F1 farm (76.2%) and lowest in F6 farm (9.2%). Highest mortality was in F1 farm (9.1%) and lowest in F6 farm (3.3%). Average prevalence was 39.6% and mortality 5.4%. Highest prevalence was at0-2 weeks of age (69.3%) and lowest at2-4 weeks of age (9.6%). The most common gross lesions were air sacculitis, omphalitis, pericarditis, perihepatitis, peritonitis and enteritis. The microscopic lesions were haemorrhage and congestion in lung, destruction of intestinal wall and reactive cell infiltration, and thickening of fibrous tissue in pericardium. Bangl. vet. 2021. Vol. 38, No. 1-2, 10–16
PubDate: 2022-12-31
DOI: 10.3329/bvet.v38i1-2.63672
Issue No: Vol. 38, No. 1-2 (2022)
- Retention of placenta and its associated factors in Bangladeshi zebu
cattle
Authors: R Debnath, A Saha, LN Talukder, MMU Bhuiyan, J Bhattacharjee
Pages: 17 - 23
Abstract: The aim was to find out the incidence of retention of placenta in 175 zebu cattle with regard to age, body condition score (BCS), parity, and feeding system. Pretested questionnaire was used for collecting the information. The overall incidence of manually removed placenta was 10.3%. Age, body condition score and feeding system had significant effect (P<0.05) on incidence of manual removal of placenta. The effect of parity was not significant. The highest incidence of 14.3%, 16%, 11.8% and 12% was in cows over 7 years of age, 6th parity, poor BCS and stall-feeding, respectively. It is suggested that animals aged 4 to 7 years, fair body condition, and free-range grazing were less susceptible to retained placenta. Bangl. vet. 2021. Vol. 38, No. 1-2, 17–23
PubDate: 2022-12-31
DOI: 10.3329/bvet.v38i1-2.63673
Issue No: Vol. 38, No. 1-2 (2022)
- Trematode infections in cattle and their vector snails in Rajshahi
district in Bangladesh
Authors: S Sejuti, MA Alim, KMM Hossain, MG Yasin, SS Labony, - Anisuzzaman, MMH Mondal
Pages: 24 - 32
Abstract: The prevalence of snail-borne trematodes (SBTs) of cattle and their vector snails in Rajshahi district in Bangladesh were determined. A total of 380 faecal samples of cattle were collected and examined using Modified Stoll’s Ova Counting Technique. Of the smaples examined, 130 (34.2%) animals were found affected with SBTs, and the mean egg per gram of faeces (EPG) was 180.3 ± 0.8. The trematodal infections by Fasciola gigantica (1.1%), different amphistomes (32.9%), and Schistosoma spindale (0.8%) were detected among the infected cattle. The effects of age, sex, breed, and body condition of the cattle on the prevalence of SBTs were determined. The infection rate was higher in young (> 2- 4 years) cattle (46.5%), followed by calves of ≤ 2 years (35.3%), and the lowest in older (> 4 years) cattle (20%). The prevalence of trematode infections was significantly (P<0.0001) higher in females (36.5%) than in male (28.3%) cattle. The prevalence was higher in cattle with poor body condition (48.7%) than in cattle with normal body condition (24.8%). Significantly (P<0.008) higher prevalence of trematode infection was recorded in indigenous cattle (41.2%) than in cross-bred cattle (26.9%). It is suggested that SBT infection is a common problem in cattle in Rajshahi district of Bangladesh. Particular emphasis should be given to proper management and regular deworming, and sustainable control measures should be developed for the prevention of SBT infection in cattle. Bangl. vet. 2021. Vol. 38, No. 1-2, 24–32
PubDate: 2022-12-31
DOI: 10.3329/bvet.v38i1-2.63674
Issue No: Vol. 38, No. 1-2 (2022)
- Factors affecting calving to service interval in crossbred Friesian cows
in a large dairy farm
Authors: MS Hossain, MA Rahman, FY Bari, MMU Bhuiyan
Pages: 33 - 41
Abstract: To determine the calving to service interval and its associated factors, 125 crossbred Friesian cows were studied. The farm records were randomly examined, and related data were collected on genotype, age, body weight, body condition score (BCS), parity, milk yield, suckling status and season of first postpartum service. The overall calving to service interval in Friesian crossbred cows was 98.9 ± 42.6 days. Calving to service intervals in cows with 50.0%, 62.5 - 68.8% and 75.0 - 87.5% exotic blood were 98.7 ± 41.6, 102.9 ± 58.3 and 94.7 ± 33.6 days, respectively. The calving to service interval in cows aged 42 - 60, 61 - 78 and 79 - 173 months was 74.0 ± 14.4, 108.5 ± 48.9 and 100.8 ± 43.0 days, respectively. The calving to service interval in cows with body weight 140 - 180, 181 - 220 and 221 - 250 Kg was 94.3 ± 38.4, 99.3 ± 41.4 and 134.2 ± 74.9 days, respectively. The calving to service interval in cows with BCS 2.5 - 3.0 and 3.5 - 4.0 was 98.8 ± 42.3 and 99.1 ± 44.3 days, respectively. The calving to service interval in cows with parity 1, 2 - 3 and 4 - 10 was 117.5 ± 76.4, 99.6 ± 40.0 and 96.4 ± 41.2 days, respectively. The calving to service interval in cows with milk yield 0 (dry), 1 - 5, 6 - 10 and 11 - 16 litres was 118.4 ± 51.2, 99.6 ± 45.6, 102.5 ± 45.8 and 84.0 ± 22.1 days, respectively. The calving to service interval in suckling and nonsuckling cows was 100.5 ± 44.3 and 88.8 ± 28.8 days, respectively. The calving to service interval in cows in summer, rainy and winter season was 98.8 ± 41.4, 104.5 ± 46.9 and 95.3 ± 41.9 days, respectively. The difference in calving to service interval among cows of different ages was significant (P<0.05). It is suggested that calving to service interval was not influenced by breed, body weight, BCS, parity, milk yield, suckling status or season of service. Bangl. vet. 2021. Vol. 38, No. 1-2, 33–41
PubDate: 2022-12-31
DOI: 10.3329/bvet.v38i1-2.63675
Issue No: Vol. 38, No. 1-2 (2022)
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