Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle.
The objectives of this study were to evaluate estrus response and pregnancy rates resulting from timed artificial insemination (AI) following estrus synchronization using CIDR in postpartum beef cattle. A total of 100 cows were randomly divided into three groups. Groups 1, 2 and 3 were artificially...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/25421/1/Effects%20of%20timed%20artificial%20insemination%20following%20estrus%20synchronization%20in%20postpartum%20beef%20cattle.pdf |
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| author | A. Malik, Haron, Abd. Wahid Yusoff, Rosnina Kasim, Azhar Yusoff, Md. Sabri |
| author_facet | A. Malik, Haron, Abd. Wahid Yusoff, Rosnina Kasim, Azhar Yusoff, Md. Sabri |
| author_sort | A. Malik, |
| collection | UPM |
| description | The objectives of this study were to evaluate estrus response and pregnancy rates resulting from timed artificial
insemination (AI) following estrus synchronization using CIDR in postpartum beef cattle. A total of 100 cows were randomly divided into three groups. Groups 1, 2 and 3 were artificially inseminated at 48-50 h(n=30), 53-55 h(n=30) and 58-60 h (n=40) after CIDR removal, respectively. Estrussynchronization was carried out using a CIDR containing 1.38 mg progesterone. All cows were given 2 mg estradiol benzoate, intramuscularly on the day of CIDR
insertion (D 0). The CIDR was removed after 8 days and 125 μg of prostaglandin F2α(PGF2α) was injected intramuscularly. One day after CIDR removal all cows were given 1 mg of estradiol benzoate intramuscularly (D 9).
Cows were observed visually for estrus after removal of CIDR. Between 30 and 32 days after timed AI, pregnancy
was determined using transrectal ultrasonography. The first estrus observation which is approximately 32 h after
CIDR removal showed no significant difference (P>0.05) among the three groups. The onset response of estrus after
32 h removal of CIDR was less than 10% in all three group
s 6.6% (G1), 6.8% (G2) and 7.3% (G3). Furthermore,
percentages of estrus response (D 10) following CIDR removal were 76.6%, 75.0% and 77.5%. The difference
between on D9 and D10 estrus response were statistically significant (P<0.05). The pregnancy rates were 23.3%
(G1), 26.6% (G2) and 37.5% (G3), which were not significant (P>0.05). |
| first_indexed | 2024-03-06T08:02:46Z |
| format | Article |
| id | upm.eprints-25421 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T08:02:46Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | upm.eprints-254212015-09-28T07:25:50Z http://psasir.upm.edu.my/id/eprint/25421/ Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. A. Malik, Haron, Abd. Wahid Yusoff, Rosnina Kasim, Azhar Yusoff, Md. Sabri The objectives of this study were to evaluate estrus response and pregnancy rates resulting from timed artificial insemination (AI) following estrus synchronization using CIDR in postpartum beef cattle. A total of 100 cows were randomly divided into three groups. Groups 1, 2 and 3 were artificially inseminated at 48-50 h(n=30), 53-55 h(n=30) and 58-60 h (n=40) after CIDR removal, respectively. Estrussynchronization was carried out using a CIDR containing 1.38 mg progesterone. All cows were given 2 mg estradiol benzoate, intramuscularly on the day of CIDR insertion (D 0). The CIDR was removed after 8 days and 125 μg of prostaglandin F2α(PGF2α) was injected intramuscularly. One day after CIDR removal all cows were given 1 mg of estradiol benzoate intramuscularly (D 9). Cows were observed visually for estrus after removal of CIDR. Between 30 and 32 days after timed AI, pregnancy was determined using transrectal ultrasonography. The first estrus observation which is approximately 32 h after CIDR removal showed no significant difference (P>0.05) among the three groups. The onset response of estrus after 32 h removal of CIDR was less than 10% in all three group s 6.6% (G1), 6.8% (G2) and 7.3% (G3). Furthermore, percentages of estrus response (D 10) following CIDR removal were 76.6%, 75.0% and 77.5%. The difference between on D9 and D10 estrus response were statistically significant (P<0.05). The pregnancy rates were 23.3% (G1), 26.6% (G2) and 37.5% (G3), which were not significant (P>0.05). 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25421/1/Effects%20of%20timed%20artificial%20insemination%20following%20estrus%20synchronization%20in%20postpartum%20beef%20cattle.pdf A. Malik, and Haron, Abd. Wahid and Yusoff, Rosnina and Kasim, Azhar and Yusoff, Md. Sabri (2012) Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. Open Veterinary Journal, 2. pp. 1-5. ISSN 2218-6050 English |
| spellingShingle | A. Malik, Haron, Abd. Wahid Yusoff, Rosnina Kasim, Azhar Yusoff, Md. Sabri Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title | Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title_full | Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title_fullStr | Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title_full_unstemmed | Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title_short | Effects of timed artificial insemination following estrus synchronization in postpartum beef cattle. |
| title_sort | effects of timed artificial insemination following estrus synchronization in postpartum beef cattle |
| url | http://psasir.upm.edu.my/id/eprint/25421/1/Effects%20of%20timed%20artificial%20insemination%20following%20estrus%20synchronization%20in%20postpartum%20beef%20cattle.pdf |
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