Sexual Differentiation in Domestic Animals - Flow Chart

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Sexual Differentiation in Domestic Animals
Sexual Differentiation in Domestic Animals - Flow Chart

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Different "EFFECT"s in Reproduction (Bruce, Whitten, Lee boot, Vandenbergh, Coolidge, McClintock, Dormitory, Audience effect)

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Bruce effect            1.   It is also known as pregnancy block effect.        2.  It refers to the spontaneous abortion or reabsorption of the embryo in the female by exposure to an unfamiliar male. Exposure to the odour of a strange male activates a neuroendocrine reflex leading to implantation failure. Whitten effect           1.  In the presence of adult male, his pheromones induce estrus in female.          2.  Female animals undergo estrus synchronization, if a group of female animals housed together with a male or when a male animal introduced into the group of females. Likewise, pheromones produced by male sheep and goats can induce out-of-season ovulation in females (“male effect”). 3. Nearly 50% of the does will be in estrus on the third day after introduction of a buck. Lee-Boot effect           Groups ...
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GONADOSTAT THEORY

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GONADOSTAT THEORY OF PUBERTY:      The gonadostat theory was proposed by Hohlweg , 1931     1. During prepuberty, sensitivity to the negative feedback actions of gonadal steroids is highest, resulting in a low release of GnRH and gonadotropins.      2. Initiation of puberty is secondary to a decrease in sensitivity to gonadal steroid feedback inhibition , resulting in increased GnRH and gonadotropin release, until a new equilibrium level is reached in adulthood. Example:        Failure of prepubertal ewe lamb to undergo ovulation and oestrus is due to the high threshold for the positive feedback is lowered, thus there is no LH surge. At puberty, the threshold is lowered, thus allowing the pituitary to respond.
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Andrological Horoscope

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  Andrological Horoscope -  Listen To Your Fingers You may have noticed the persons on roadsides who are predicting the future of persons by seeing their palm line pattern. I do not have an answer to prove the possibility of predicting the future of a person by their palm. However, I am going to tell how you can know about your past by the length of your fingers. Past means not about your previous year’s life, this is far beyond that. I am going to predict what was happened when you are inside your mother’s womb.  Is this sound interesting? Yes, by measuring the length of your fingers, you can find out whether you had been exposed to a higher level of male hormone (testosterone) when you are inside your mother’s womb. This is not like a simple palm line horoscope because so many scientific literatures are available and new researches also still going on in this aspect.   2D:4D ratio How to measure?        ...
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