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Early embryonic mortality
Embryo mortality is a serious problem for farmers, practitioners and researchers. The establishment and maintenance of pregnancy is a highly complicated process involving the embryo, uterus and cow. Fertilization rates in cattle are generally between 90and100 % , with only 70% of all fertilizations resulting in a live birth. Therefore, 30 % of fertilizations are lost to some form of embryo death. Nearly 65% of all embryonic losses occur between days 6 and 18 of pregnancy.
There is no single fa cto r that ca n b e manipulate d that will c onsistently improve embryonic survivability. But, by managing genetics, nutrition, parity, stress, and infectious agents the incidence of embryonic loss can be decreased considerably.
Q. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat? How evolution does solve those problems?
Sphaerosome Also known as Plant lysosome , because they contain hydrolytic enzymes. Hanstei n first observed them and called microsomes . Discovered by Dangeared
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what is radula?
What happens to transcription at the lac operon when lactose is absent and why? What happens to transcription at the lac operon when lactose is present and why? What happens
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Metestrus - Estrous cycle This occurs shortly after ovulation and is intermediate between estrus and diestrus. The period lasts for 10 to 14 hours and mating is usually not perm
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