Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia

Reproductive wastage is a major cause of production loss in dairy animals. Fertilization failure and embryonic death are suggested to be the main causes of reproductive loss. The dairy industry in Malaysia is hampered by poor reproductive performance which is manifested by repeat breeding and length...

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Main Author:	Hj. Rusli, Roslaini
Format:	Thesis
Language:	English English
Published:	1998
Subjects:	Livestock - Malaysia - Embryos - Mortality Friesian cattle
Online Access:	http://psasir.upm.edu.my/id/eprint/12190/1/FPV_1998_3_A.pdf
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id	my-upm-ir.12190
record_format	uketd_dc
spelling	my-upm-ir.121902011-07-14T08:30:18Z Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia 1998-04 Hj. Rusli, Roslaini Reproductive wastage is a major cause of production loss in dairy animals. Fertilization failure and embryonic death are suggested to be the main causes of reproductive loss. The dairy industry in Malaysia is hampered by poor reproductive performance which is manifested by repeat breeding and lengthened calving interval. Whether this is due to fertilization failure or embryonic death has never been determined. This study is belief to be the first in the tropics in trying to quantify reasons for reproductive inefficiency in crossbred cows in the tropical environment and attempts to relates the influence of the hot ambient tropical temperature and humidity to embryonic mortality. In this study reproductive inefficiency is caused by fertilization failure (9%), luteal insufficiency at insemination (10%), embryonic mortality (53%) and foetal deaths (8%). Embryonic mortality is the major caused of reproductive inefficiency. BED contributed to 73% of all embryonic mortalities with 62% of these taking place from Day 8-21 of the gestation period. Fertilization rate of 81% is achievable in the tropics. Treatment with exogenous progesterone do not increased pregnancy rate neither does keeping early pregnant animal under stallfeeding, but both factors had a positive association in contributing to embryonic mortality. Poor reproductive performance in this study in not due to fertilization failure but due to embryonic mortality. This study has challenged the traditionally accepted reason of poor heat detection being the main reason for poor reproductive performance (due to fertilization failure) in the Sahiwal Friesian cows. Livestock - Malaysia - Embryos - Mortality Friesian cattle 1998-04 Thesis http://psasir.upm.edu.my/id/eprint/12190/ http://psasir.upm.edu.my/id/eprint/12190/1/FPV_1998_3_A.pdf application/pdf en public masters Universiti Putra Malaysia Livestock - Malaysia - Embryos - Mortality Friesian cattle Faculty of Veterinary Medicine English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Livestock - Malaysia - Embryos - Mortality Friesian cattle
spellingShingle	Livestock - Malaysia - Embryos - Mortality Friesian cattle Hj. Rusli, Roslaini Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
description	Reproductive wastage is a major cause of production loss in dairy animals. Fertilization failure and embryonic death are suggested to be the main causes of reproductive loss. The dairy industry in Malaysia is hampered by poor reproductive performance which is manifested by repeat breeding and lengthened calving interval. Whether this is due to fertilization failure or embryonic death has never been determined. This study is belief to be the first in the tropics in trying to quantify reasons for reproductive inefficiency in crossbred cows in the tropical environment and attempts to relates the influence of the hot ambient tropical temperature and humidity to embryonic mortality. In this study reproductive inefficiency is caused by fertilization failure (9%), luteal insufficiency at insemination (10%), embryonic mortality (53%) and foetal deaths (8%). Embryonic mortality is the major caused of reproductive inefficiency. BED contributed to 73% of all embryonic mortalities with 62% of these taking place from Day 8-21 of the gestation period. Fertilization rate of 81% is achievable in the tropics. Treatment with exogenous progesterone do not increased pregnancy rate neither does keeping early pregnant animal under stallfeeding, but both factors had a positive association in contributing to embryonic mortality. Poor reproductive performance in this study in not due to fertilization failure but due to embryonic mortality. This study has challenged the traditionally accepted reason of poor heat detection being the main reason for poor reproductive performance (due to fertilization failure) in the Sahiwal Friesian cows.
format	Thesis
qualification_level	Master's degree
author	Hj. Rusli, Roslaini
author_facet	Hj. Rusli, Roslaini
author_sort	Hj. Rusli, Roslaini
title	Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
title_short	Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
title_full	Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
title_fullStr	Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
title_full_unstemmed	Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia
title_sort	embryonic deaths in the sahiwal friesian cows in an institutional farm in malaysia
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Veterinary Medicine
publishDate	1998
url	http://psasir.upm.edu.my/id/eprint/12190/1/FPV_1998_3_A.pdf
_version_	1747811325028859904

Embryonic Deaths in the Sahiwal Friesian Cows in an Institutional Farm in Malaysia

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