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Articles by M.A.M.Y. Khandoker
Total Records ( 4 ) for M.A.M.Y. Khandoker
  P.C. Goswami , S.Z. Ali , M.A.M.Y. Khandoker , S.A. Azmal , M.K. Alam and R. Khatun
  The research was carried out at the Animal Breeding and Genetics Laboratory under the Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh. It was conducted with a view to establish some relationship between ovarian condition in terms of the presence or absence of corpus luteum and morphological quality of the COCs as well as the relationship between follicular diameter and quality of COCs. Significantly highest (p<0.01) number of follicles was found in type III ovaries. The number of follicles measuring 2-6 mm diameter was observed to be significantly higher (p<0.01) in type III than type II and type I ovaries. Moreover, grade A and grade B COCs were significantly highest (p<0.01) in number in 2-6 mm diameter follicles. It was established that cumulus cells surrounding the oocytes favour to a less or greater extent the IVM (In vitro maturation), IVF (In vitro fertilization) of oocytes and subsequent IVC (In vitro culture) of zygotes. On the basis of the study, it is concluded that type III ovaries having no corpus luteum may be suggested for obtaining good quality Cumulus-oocyte-complexes (COCs) in experiment for IVM, IVF and subsequent IVC.
  L. Asad , S.S. Husain , M.G.M. Rahman , M.A.M.Y. Khandoker , M.E. Hossain and M.Z. Rahman
  In the present experiment volume, concentration, mass movement and forward movement of semen of different genotypes of bulls relating to body weight, age, sexual maturity and season were evaluated. A total of 1422 semen samples from 22 different bulls of seven genotypes were included in this study from Central Cattle Breeding Station (CCBS), Shavar, Dhaka, Bangladesh. Among the seven genotypes of bulls, only the Friesian bulls gave the largest volume of semen (14.26 ± 0.19 mL), mass movement (4.87 ± 0.07 grade) and forward movement (61.29 ± 0.31%) of sperm. While considering the age, the bulls of 4 to 6 years old provided the highest semen volume (13.60 ± 0.18 mL), sperm concentration (1219.89 ± 10.72 million sperm mL-1), mass movement (4.66 ± 0.06 grade) and forward movement (61.34 ± 0.28%) of sperm. The highest volume (12.01 ± 0.22 mL) of semen, sperm concentration (1182.29 ± 14.30 million sperm mL-1), mass movement (4.40 ± 0.08 grade) and forward movement (58.74 ± 0.54%) of sperm was found in 3 years age of sexual maturity. In case of body weight, the maximum volume of semen (12.16 ± 0.22 mL) and forward movement (60.25 ± 0.45%) of sperm was obtained in the bulls of 400 to 600 kg body weight and the volume was maximize (12.15 ± 0.23 mL) in summer season. The findings suggested that Friesian produced better quality semen than other genotypes while 4 to 6 years age and >600 to 700 kg body weight of bulls performed better than other age and body weight groups. The summer season gave better quality semen than other seasons.
  M.P. Mostari , M.G.M. Rahman , M.A.M.Y. Khandoker and S.S. Husain
  The data of the present study were collected from Bangladesh Milk Producers` Co-operative Union Limited (BMPCUL) at Baghabarighat, Sirajgong, Bangladesh to evaluate the bull performance through semen quality and 30-day Non Return Rate (NRR). Data on 245 ejaculates and 12,750 services of almost same aged of 5 Sahiwal bulls (B1, B2, B3, B4 and B5) over a period of 5 years were collected from Animal Breeding Section and Cattle Feed Unit of BMPCUL. The significant (p<0.01) individual sire effect was found on semen volume, three stages of sperm motility (initial, on dilution and post-thawing) and fertility. Significant (p>0.05) variation was not found for pH. The highest volume of semen per ejaculate, the initial, on dilution and post-thawing sperm motility were found in bull B4 and representing 5.60±0.19 mL, 73.56±0.61, 69.27±0.33 and 63.90±0.48%, respectively. The highest sperm motility was found in initial stage and then declined steadily up to post-thawing stage. Significant (p<0.01) positive correlations were observed between the three stages of sperm motility and fertility. The results of the present study revealed that evaluation of breeding bulls on the basis of semen quality and herd fertility is important and provides the guideline of the way to sire selection for reproductive performance.
  M.A.S. Talukder , M.A.M.Y. Khandoker , M.G.M. Rahman , M.R. Islam and M.A.A. Khan
  The reproductive disorders are major causes of reduced fertility in cows that result in failure to produce or delay in producing the total annual calf crop. To identify the reproductive problems of dairy cows of Bangladesh Agriculture University (BAU) dairy farm initially different reproductive parameters in five genetic groups of cows were compiled in this study and 10 cows were identified as less performer. Jersey cross and Holstein Friesian cross were found as the less performer (30% reproductive disorder) followed by Sindhi and Sahiwal crossbred cows (20% reproductive disorder) and Red Chittagong was found as the best performer (0% reproductive disorder). The reproductive records of these 10 cows further taken into consideration and found to be anestrus. The cause of anestrus were further confirmed by rectal palpation and led to the anestrus due to unknown reason (20%) and ovarian abnormalities (80%). The ovarian abnormalities recorded to be as hypoplasia, deformed ovaries and cystic ovaries and their incidence percentages were 30, 20 and 30, respectively. For probable remedies related reproduction management were provided and the incidence (%) of improvement found in Jersey, Sindhi, Holstein Friesian and Sahiwal crossbreds cows were 66.7, 0.0, 33.3 and 100.0, respectively. It is concluded that Red Chittagong cows encountered least reproductive complains in BAU dairy farm. Moreover, Jersey and Holstein-Friesian crosses were found to be more susceptible to reproductive disorders than crosses of Sindhi and Sahiwal cows.
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