IOSR-JAVS VOLUME-16 ~ ISSUE-5 ~ May 2023

ABSTRACT:Background: Mastitis is a common inflammation of the udder and teats in dairy cows that exists in two forms: clinical and subclinical. Subclinical mastitis is more prevalent and difficult to diagnose, resulting in longer persistence in the herd and higher economic losses compared to clinical mastitis, making it a significant concern for dairy farmers.
Objective: The investigation used CMT score, udder scoring protocols, and physical parameters to determine the prevalence and factors affecting the incidence of mastitis in milking cows in select regions of Bangladesh. Methods: The study investigated the prevalence of mastitis in 360 lactating dairy cows of different breeds, ages, and lactation stages in various dairy farms of the Matlab Dakshin, Matlab Uttar, Faridganj, and Chandpur Sadar Upazila of Chandpur district, Bangladesh. The data were collected through a farm survey, examination of the udder and milk, and California Mastitis Test (CMT), and analyzed using SPSS software. Results: Utilizing a formal questionnaire......

Keywords: Mastitis, Prevalence, Dairy cows, Subclinical form, Bangladesh

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[2]. Taponen, S.; Liski, E.; Heikkilä, A.-M.; Pyörälä, S. Factors associated with intramammary infection in dairy cows caused by coagulase-negative staphylococci, Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Corynebacterium bovis, or Escherichia coli. J. Dairy Sci. 2017, 100, 493-503.
[3]. Mbindyo, C.M.; Gitao, G.C.; Mulei, C.M. Prevalence, etiology, and risk factors of mastitis in dairy cattle in Embu and Kajiado Counties, Kenya. Vet. Med. Int. 2020, 2020.
[4]. Jamali, H.; Barkema, H.W.; Jacques, M.; Lavallée-Bourget, E.-M.; Malouin, F.; Saini, V.; Stryhn, H.; Dufour, S. Invited review: Incidence, risk factors, and effects of clinical mastitis recurrence in dairy cows. J. Dairy Sci. 2018, 101, 4729-4746.
[5]. Ndahetuye, J.B.; Persson, Y.; Nyman, A.-K.; Tukei, M.; Ongol, M.P.; Båge, R. Aetiology and prevalence of subclinical mastitis in dairy herds in peri-urban areas of Kigali in Rwanda. Trop. Anim. Health Prod. 2019, 51, 2037-2044

ABSTRACT:Sorghum grain can potentially be a high-quality energy source in non-ruminant diets. However, its digestibility is constrained by endogenous anti-nutritional factors. This study investigated the effect of extrusion cooking variables on in vitro dry matter digestibility (IVDMD) of sorghum extrudate. The study followed a (3×2×2) factorial arrangement in a completely randomized design, each with three replicates, to determine the effect of feed moisture content, barrel temperature, and screw speed on IVDMD of sorghum extrudate using a co-rotating twin screw extruder. According to preliminary trials, the feed moisture content was between 40 to 50% (wet basis), the barrel temperature was 70 and 90 °C, and the screw speed was 280 and 300 rpm. The IVDMD of sorghum extrudate increased as......

Keywords: Anti-nutritional factors, barrel temperature, high-tannin sorghum, screw speed, twin screw extruder

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ABSTRACT: Red Chittagong (RC) is a breed of cattle that is native to Bangladesh, and is known for its adaptation to tropical climates. The Y chromosomal haplotypes formed by 5 single nucleotide polymorphisms (SNPs) of sex- determining region Y gene (SRY) in Y chromosome shows the mode of paternal inheritance in cattle. The polymorphism of stearoyl‐CoA desaturase (SCD) and sterol regulatory element‐binding protein‐1 (SREBP-1) genes are associated with fatty acid composition in meat and melanocortin receptor-1 (MC1R) gene is involved in coat color determination in cattle. The aim of this study was to investigate genetic characteristics of these cattle using Y chromosomal haplotypes and polymorphism of genes associated with economical traits and coat color.......

Keywords: SRY, MC1R, SCD, SREBP1, and Genotyping

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[3]. Hoashi S, Ashida N, Ohsaki H, Utsugi T, Sasazaki S, Taniguchi M, Oyama K, Mukai F, Mannen H. Genotype of bovine sterol regulatory element binding protein-1 (SREBP-1) is associated with fatty acid composition in Japanese Black cattle. Mammalian Genome. 2007; 18: 880-886.
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[5]. Hamid MA, Rahman A, Zaman MA, Hossen KM. Cattle Genetic Resources and their Conservation in Bangladesh. Asian Journal of Animal Sciences. 2017;11:54-64.

ABSTRACT: An experiment was conducted at the Horticulture Research Field, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during the period from November 2020 to March 2021 to evaluate the performance of strawberry variety under different growing conditions. The experiment consisted of two factors; Factor A: two varieties viz. i) Rabi strawberry-1 ii) Sweet sensation and Factor B: Growing condition (two different environmental conditions) viz. i) Ambient condition ii) Agro-shade condition. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. About 35 days old healthy and disease free daughter plants of strawberry variety Rabi strawberry-1 and sweet sensation were collected from Rajshahi University, Bangladesh and Kolkata......

Keywords: Strawberry, variety, plant growth, yield and quality.

[1]. Adnan, M. M., Rahim, M. A., Haque, T., Hossain, M. M. 2017: Growth and yield performance of strawberry (Fragaria × ananassa Duch.) as influenced by variety and mulch materials. Fundamental and Applied Agriculture 2(1): 202-206.
[2]. Asrey, R., Jain, R.K., Singh, R. 2009: Effect of pre-harvest chemical treatments on shelf life of Chandler strawberry. Indian Journal of Agricultural Sciences 74: 485-487.
[3]. Caillouet O. C. 2016: The Effects of Shade on Growth, Development and Yield of a Primocane Fruiting Blackberry, 'Prime-Ark 45' to Extend the Market Season. Horticulture Undergraduate Honors Theses. 4
[4]. Chaudhuri, S. K. 2013: A simple and reliable method to detect gamma irradiated lentil (Lens culinaris Medik) seeds by germination efficiency and seedling growth test. Radiation Physics and Chemistry 64: 131-136.
[5]. Chowdhury, A. N., Nargis, A., Rahman, M. Z., Alam, A. K. M. S., Ibrahim, M., Akhter