Effect of Timing of Artificial Insemination and Ovulation in Relation to Onset of Standing Heat on Pregnancy Rate in Nili-Ravi Buffaloes (Record no. 3402)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02669nam a2200193Ia 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20151006142722.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 150525s2013 xx 000 0 und d |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 1694,T |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Umair Riaz |
| 110 ## - MAIN ENTRY--CORPORATE NAME | |
| Location of meeting | Prof. Dr. Nasim Ahmad |
| 245 ## - TITLE STATEMENT | |
| Title | Effect of Timing of Artificial Insemination and Ovulation in Relation to Onset of Standing Heat on Pregnancy Rate in Nili-Ravi Buffaloes |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Year of publication | 2013 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Artificial insemination (AI) is one of the first and most influential biotechnologies of animal agriculture. To be beneficial artificial insemination must be done properly. There are many factors involved in quality of AI performance, including insemination technique, technician, semen quality, cleanliness, etc. However, the single most important factor in achieving high conception rate in buffalo is the timing of AI relative to the timing of ovulation. Application of AI is difficult because of poor estrus expression by buffaloes and poor estrus detection by owners, a highly variable duration of estrus and the difficulty to predict time of ovulation. The objective of the present study was to determine the effect of A.I at different time intervals (0, 12, 24 hours after the onset of standing heat) in relation to time of ovulation on pregnancy rate in buffalo. For this purpose, buffaloes with average body condition 2.5 ± 0.5 at Livestock Experimental Station Bhuneki, Buffalo Research Institute, Pattoki District Kasur during breeding season (September to December) were exposed to teaser bull two times in a day at 12 hours interval (6:00 am in morning and 6:00 pm in evening) to determine the standing heat (0h). Buffaloes, allocated randomly, at different time intervals i.e., either 0, 12 or 24 hours after the onset of standing heat were bred artificially using frozen thawed semen. Trans-rectal ultrasonography (HS 1500V; Honda; Japan, with 7.5 MHz transducer) was used to determine ovarian follicular development and ovulation, from onset of standing heat till ovulation after every 12 hours. Pregnancy status was determined by ultrasonography, 30 to 40 days post AI. Results revealed that the overall time of ovulation from onset of standing heat averaged 35.33 ± 0.21 h. Pregnancy rates were 26% (8/30) at 0 h, 37% (10/27) at 12 h and 53% (15/28) at 24 h after the onset of standing heat. It is concluded that timing of ovulation is about 35 h and 24 maximum pregnancy rate are achieved when bred after 24 hours after the onset of heat in buffaloes. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Department of Theriogenology |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dr. Mian Abdul Sattar |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Prof. Dr. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Thesis |
| Damaged status | Collection code | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Accession Number | Koha item type |
|---|---|---|---|---|---|---|---|---|
| Veterinary Science | UVAS Library | UVAS Library | Thesis Section | 2015-05-29 | 1694,T | 1694,T | Thesis |