Embryo Transfer Technique for Improvement of Cattle Productivity

Item

ชื่อเรื่อง

Embryo Transfer Technique for Improvement of Cattle Productivity

ชื่อเรื่องอื่น/ชื่อเรื่องเทียบเคียง

การเพิ่มจำนวนและคุณภาพโคจากการถ่ายฝากตัวอ่อนที่ผลิตจากหลอดทดลอง

ผู้สร้าง/เจ้าของผลงาน

Manop Chaimati

หัวเรื่อง

Reproduction
Breeding
Animal breeding

คำอธิบายรายละเอียดของเอกสาร

Infertility, especially in the older animal, is one of the most wasteful and economically devastating problems of the livestock industry.
In the majority of cases, tile food-producing animals should be culled. There are, however, many genetically superior females which become infertile due to uterine or oviductal diseases or the old age, and in many instances embryo transfer technique can be used to obtain additional progeny from such animals.

สรุปเนื้อหา/บทคัดย่อ

The pregnancy rates and calve offspring in an embryo transfer program of bovine embryos which were produced in vitro were investigated. The bovine embryos were produced by tissue culture method to mature oocytes (in TCM-199 medium) and fertilize in vitro with heparin-treated sperm (in TALP-glucose free medium). The oviductal epithelial cells were co-cultured in vitro (in TCM-199+10% HTFCS) and were capable of supporting normal growth of embryos to the stages at which non-surgical embryo transfer could be performed (compact morula, early blastocyst and blastocyst). It was found that the pregnancy rate following non- surgical of the same stage of two excellent embryos to the native recipient cows was higher in early blastocyst (75%) than compact morula (55%) and blastocyst (30%) stages and the total rate of pregnancy was 55% while the twin pregnancy rate was 28%. A total of 21 healthy calves were born from 17 recipients and mean birth weight was 21.2 kg. The result of the present study indicates that satisfactory pregnancy could be obtained when excellent embryos produced in vitro were transferred to-1 day a synchronous native recipient cows and the early blastocysts were the best for transfer.

ผู้จัดพิมพ์/สำนักพิมพ์

National Research Council Thailand

วัน/เดือน/ปีที่ผลิตเอกสาร

1993

วันที่บันทึกข้อมูล

2025-06-01

สิทธิ์การเข้าถึง

This document is distributed under the terms of the Creative Commons Attribution 4.0 International (CC-BY-NC-ND 4.0) and copyright of the Chulachomklao Royal Military Academy

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ขนาดหรือจำนวนของเอกสาร

17 leaves

ต้นฉบับ/แหล่งที่มา

Journal of the National Research Council of Thailand Vol. 25 No. 1 January-June 1993, 1-18
Library and Information Center, National Institute of Development Administration

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Ministry of Higher Education, Science, Research and Innovation

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This document is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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