Factors influencing the pregnancy rate in indigenous ewes following AI using frozen semen

Naher, Nazmun; Juyena, Nasrin Sultana; Jha, Pradeep Kumar; Talukder, Mri; Alam, Md. Monjurul; Bari, Farida Yeasmin

doi:10.3329/bvet.v33i2.36456

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…In this study, a significantly higher (p<0.05) pregnancy rate (75%) was found in ewes which were inseminated 20-24 hours from the onset of estrus. The study report is similar to Naher et al (2017) and Azizunnesa (2016), who reported a pregnancy rate of 75%-77.3% following LAP-AI, inseminated 20-24 hours from the onset of estrus.…”

Section: Discussionsupporting

confidence: 89%

“…The pregnancy rate was significantly higher (83.33%) in ewes which were punctured 4-5 cm away from the udder, facilitating the clear visualization of the uterine horn near the puncture site. This result is similar to Naher et al (2017) and Jha et al (2020). This result is not matched with Dovenski et al (2012) and El-Badry et al (2014), found higher pregnancy rate when puncturing ewes 7-10 cm away from the udder.…”

Section: Discussionsupporting

confidence: 42%

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Factors affecting the pregnancy rate of Bangladeshi ewes following Laparoscopic Artificial Insemination (LAP-AI)

Akter¹,

Asaduzzaman²,

Saha³

et al. 2020

VIS

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The study was conducted to determine the effects of different factors on increased pregnancy rate of Bangladeshi ewes through LAP-AI. A total of 24 indigenous ewes and 4 rams were selected. Frozen semen with a concentration of 100×106 spermatozoa/ 0.25 ml straws were produced. The selected ewes were synchronized using two doses of PGF2α @ 175µg per ewe at 9 days intervals intramuscularly. Estrus was confirmed by the vasectomized ram. The LAP-AI was performed at two different times from the onset of estrus, two angles of placement on the laparoscopic cradle, and two different puncture sites. Pregnancy was confirmed by ultrasonography on days 45-50 following insemination. The pregnancy rate of ewes 2.5-4 years of age and 16-20 kg bodyweight was higher (75% vs. 41.67%) than ewes 1-2 years and 9-13 kg. However, this was not significant (p>0.05). The pregnancy rate of ewes having BCS >3 was significantly higher (p<0.05) (78.57% vs. 30%) than BCS 2-2.5. The 20-24 hours insemination time from the onset of estrus yielded a significantly higher (p<0.05) (75% vs. 25%) pregnancy rate than 12-16 hours. The pregnancy rate was higher (66.67% vs. 50%) at 45° than 30°angle of placement of ewes on the laparoscopic cradle. However, there was no significant difference (p>0.05). The puncture point, 4-5 cm away from the udder resulted from a significantly higher pregnancy rate (p<0.05) (83.33% vs. 33.33%) than 7-10 cm. The present study indicates that the pregnancy rates following LAP-AI using frozen semen could be increased if the significant factors are considered.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 42%

Factors affecting the pregnancy rate of Bangladeshi ewes following Laparoscopic Artificial Insemination (LAP-AI)

Akter¹,

Asaduzzaman²,

Saha³

et al. 2020

VIS

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“…Moreover, the farmers favor to practice low input technology in their extensive farming system (Bora and Das, 2013). In Bangladesh, preliminary work on artificial insemination in sheep breeding program has been performed by many researchers (Rekha et al 2016;Naher et al 2016;Jha et al 2020). Till to date, there is found no information about the cost structure of frozen ram semen as well as Developing a Cost Structure of Frozen Semen Production and Performance of Artificial Insemination for Sheep Breeding Program performance artificial insemination.…”

Section: Introductionmentioning

confidence: 99%

Developing a Cost Structure of Frozen Semen Production and Performance of Artificial Insemination for Sheep Breeding Program

Asaduzzaman¹,

Saha²,

Alam³

et al. 2021

ASD

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Background: Artificial insemination is an important applicable tool in increasing productivity by genetic exploitation through the male line. But farmers or breeders adoption require to be known the detailed cost structure and the nature of the cost function of the new technology. In this paper, therefore an attempt is made to develop a cost structure for frozen semen dose and a representative artificial breeding program in ewes.Methods: Semen was frozen twice-weekly for a period of a month following traditional box-freezing. Variable and fixed costs associated with the ram management, semen collection, processing and freezing were estimated and used in frozen semen production cost calculation. Cost items estimated as per cost assumption model and used for artificial insemination cost calculation.Result: The mean production cost of a frozen semen straw was estimated as Tk. 41.66 where ram maintenance cost, semen processing and preservation cost and staff cost shared the maximum expenses were to be 53.69, 12.93 and 33.38%, respectively. The average performance cost of artificial insemination incurred in the study was approximately Tk. 217.31, there in the semen dose, AI pipette and hormone cost covered the top areas of expenses to be 38.34, 23.00 and 19.33%, respectively. The cost estimate of the current study will be of more informative for breeders, stakeholders and researchers in sheep breeding technology.

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A systematic review of pre-clinical and clinical research reports on small ruminants published during the last six decades in the then East Pakistan and in Bangladesh

Samad¹

2019

JVMOHR

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Background: A dozen of veterinary academic institutions offer degree courses with pre-clinical and clinical studies and conduct research works but their activities are not coordinated and unified in Bangladesh. An attempt has been made to review the pre-clinical and clinical research reports in small ruminants which would help the concerned academicians, research scientists and research funded organizations to update their knowledge of specialization and use this reference as a starting point for formulation of the future academic and research guidelines. Objectives: The main objectives are to provide an integrated, systematic overview of all the available published research reports on the pre-clinical and clinical aspects of small ruminants to update knowledge and to identify research insights, existing gaps and future research directions. Materials and Methods: The available research reports on pre-clinical and clinical aspects of small ruminants published mainly in journals during the last six decades in Bangladesh from 1966 to 2019 were reviewed. Data obtained were analyzed statistically based on pre-clinical and clinical subjects, host species, age, breeds, clinical prevalence and decade-wise to assess the rate of publication. Results: Of the 665 selected articles, 621 research papers published on small ruminants during the last six decades from Bangladesh were systematically reviewed, of which 340 (54.75%) articles reported as pre-clinical and 281 (45.25%) on clinical aspects with significantly higher rates in goats (n = 486; 78.26%) than sheep (n = 135; 21.74%). Out of 126 recorded clinical diseases and disorders in small ruminants, 125 (99.21%) reported in goats and 44 (34.92%) in sheep, with 43 (34.13%) common in both goats and sheep but only pregnancy toxaemia (0.79%) reported in sheep. The influence of age and breeds on the prevalence of clinical diseases and disorders associated with their morbidity and mortality are described and discussed. Conclusions: This unified review article would serve as a guide for the veterinary medical academicians, research scientists and organizations for future studies and research directions. The disease profiles and their morbidity and mortality status in small ruminants might help the practicing veterinarians, government, human health care providers and neighboring countries who may need to take action.

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Factors influencing the pregnancy rate in indigenous ewes following AI using frozen semen

Cited by 4 publications

References 4 publications

Factors affecting the pregnancy rate of Bangladeshi ewes following Laparoscopic Artificial Insemination (LAP-AI)

Factors affecting the pregnancy rate of Bangladeshi ewes following Laparoscopic Artificial Insemination (LAP-AI)

Developing a Cost Structure of Frozen Semen Production and Performance of Artificial Insemination for Sheep Breeding Program

A systematic review of pre-clinical and clinical research reports on small ruminants published during the last six decades in the then East Pakistan and in Bangladesh

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