Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle

The first experiment was conducted to evaluate the effect of various progestagen treatment methods in term of oestrous synchronization, ovulation and pregnancy rate using controlled internal drug-release (CIDR) device or progesterone-releasing intravaginal device (PRID) with prostaglandin F2ct (PGF...

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Main Author:	Khor, Chun Siah
Format:	Thesis
Language:	English English
Published:	2002
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Online Access:	http://psasir.upm.edu.my/id/eprint/11727/1/FPV_2002_8.pdf
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spelling	my-upm-ir.117272024-06-25T07:17:10Z Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle 2002-11 Khor, Chun Siah The first experiment was conducted to evaluate the effect of various progestagen treatment methods in term of oestrous synchronization, ovulation and pregnancy rate using controlled internal drug-release (CIDR) device or progesterone-releasing intravaginal device (PRID) with prostaglandin F2ct (PGF2ct) injection on the day of CIDRIPRID removal. Twenty-four non-pregnant Kedah-Kelantan (KK) cows were randomly assigned to two groups: CIDR (n=12); PRID (n=12). Both group were given 12-day synchronization treatment and received an intramuscular injection of 25 mg PGF2ct on the day of device removal. The ovaries of all cows were examined by ultrasonography, using a 5 MHz probe, from one day after CIDR/PRID removal until ovulation. Blood samples were collected for determination of progesterone. The proportion of cows observed in oestrus was significantly higher in the CIDR group than PRID group (91.7% vs 58.3%, P<O.Ol). Pregnancy rate was also significantly higher in CIDR group than PRID group (27.3% vs 14.2%, P<0.05). Results from experiment indicated that CIDR is more efficient than PRID. The second experiment was to evaluate the effect of the length of progestagen treatment (12 day vs 7 day) on oestrous synchronization, ovulation and pregnancy rate using controlled internal drug-release device (CIDR) with PGF2a injection at the end of CIDR treatment. Sixteen adult non-pregnant KK cows were divided into two groups: long-term treated group (n=8); Short-term treated group (n=8), day of CIDR removal. All the cows were undergone transrectal ultrasonography, and blood samples were taken for hormone assay. Until 120 h after CIDR removal, the percentage of cows came into oestrus was significantly higher in long-termtreated group than short-term treated group (87.5%). The pregnancy rate was significantly higher in the short-term treated group than in long-term-treated group (40.0% vs 25.0%, follicle in long-term treated group attained a larger maximum diameter than in short-term treated group (P<0.05). The mean time of ovulation after device removal was 108 h in the short-term treated group and 88 ± 5.06 h in the long-tenn treated group; the length of time required for ovulation between two treatment were significantly different (P<0.05). The result showed that the 7-d CIDR+ PGF2a oestrous synchronization protocol rendered a better fertility in Kedah-Kelantan cows. 2002-11 Thesis http://psasir.upm.edu.my/id/eprint/11727/ http://psasir.upm.edu.my/id/eprint/11727/1/FPV_2002_8.pdf text en public masters Universiti Putra Malaysia Faculty of Veterinary Medicine Baron, Abd Wahid English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Baron, Abd Wahid
topic
spellingShingle	Khor, Chun Siah Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
description	The first experiment was conducted to evaluate the effect of various progestagen treatment methods in term of oestrous synchronization, ovulation and pregnancy rate using controlled internal drug-release (CIDR) device or progesterone-releasing intravaginal device (PRID) with prostaglandin F2ct (PGF2ct) injection on the day of CIDRIPRID removal. Twenty-four non-pregnant Kedah-Kelantan (KK) cows were randomly assigned to two groups: CIDR (n=12); PRID (n=12). Both group were given 12-day synchronization treatment and received an intramuscular injection of 25 mg PGF2ct on the day of device removal. The ovaries of all cows were examined by ultrasonography, using a 5 MHz probe, from one day after CIDR/PRID removal until ovulation. Blood samples were collected for determination of progesterone. The proportion of cows observed in oestrus was significantly higher in the CIDR group than PRID group (91.7% vs 58.3%, P<O.Ol). Pregnancy rate was also significantly higher in CIDR group than PRID group (27.3% vs 14.2%, P<0.05). Results from experiment indicated that CIDR is more efficient than PRID. The second experiment was to evaluate the effect of the length of progestagen treatment (12 day vs 7 day) on oestrous synchronization, ovulation and pregnancy rate using controlled internal drug-release device (CIDR) with PGF2a injection at the end of CIDR treatment. Sixteen adult non-pregnant KK cows were divided into two groups: long-term treated group (n=8); Short-term treated group (n=8), day of CIDR removal. All the cows were undergone transrectal ultrasonography, and blood samples were taken for hormone assay. Until 120 h after CIDR removal, the percentage of cows came into oestrus was significantly higher in long-termtreated group than short-term treated group (87.5%). The pregnancy rate was significantly higher in the short-term treated group than in long-term-treated group (40.0% vs 25.0%, follicle in long-term treated group attained a larger maximum diameter than in short-term treated group (P<0.05). The mean time of ovulation after device removal was 108 h in the short-term treated group and 88 ± 5.06 h in the long-tenn treated group; the length of time required for ovulation between two treatment were significantly different (P<0.05). The result showed that the 7-d CIDR+ PGF2a oestrous synchronization protocol rendered a better fertility in Kedah-Kelantan cows.
format	Thesis
qualification_level	Master's degree
author	Khor, Chun Siah
author_facet	Khor, Chun Siah
author_sort	Khor, Chun Siah
title	Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
title_short	Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
title_full	Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
title_fullStr	Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
title_full_unstemmed	Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle
title_sort	effects of progesterone intravaginal devices on artificial insemination, oestrous synchronization, ovulation and pregnancy rate in kedah-kelantan cattle
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Veterinary Medicine
publishDate	2002
url	http://psasir.upm.edu.my/id/eprint/11727/1/FPV_2002_8.pdf
_version_	1804888650217947136

Effects of Progesterone Intravaginal Devices on Artificial Insemination, Oestrous Synchronization, Ovulation and Pregnancy Rate in Kedah-Kelantan Cattle

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