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Anand Agricultural University, Anand

Anand Agricultural University (AAU) was established in 2004 at Anand with the support of the Government of Gujarat, Act No.(Guj 5 of 2004) dated April 29, 2004. Caved out of the erstwhile Gujarat Agricultural University (GAU), the dream institution of Sardar Vallabhbhai Patel and Dr. K. M. Munshi, the AAU was set up to provide support to the farming community in three facets namely education, research and extension activities in Agriculture, Horticulture Engineering, product Processing and Home Science. At present there seven Colleges, seventeen Research Centers and six Extension Education Institute working in nine districts of Gujarat namely Ahmedabad, Anand, Dahod, Kheda, Panchmahal, Vadodara, Mahisagar, Botad and Chhotaudepur AAU's activities have expanded to span newer commodity sectors such as soil health card, bio-diesel, medicinal plants apart from the mandatory ones like rice, maize, tobacco, vegetable crops, fruit crops, forage crops, animal breeding, nutrition and dairy products etc. the core of AAU's operating philosophy however, continues to create the partnership between the rural people and committed academic as the basic for sustainable rural development. In pursuing its various programmes AAU's overall mission is to promote sustainable growth and economic independence in rural society. AAU aims to do this through education, research and extension education. Thus, AAU works towards the empowerment of the farmers.

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1953 - 195921990 - 19921
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Subject: Veterinary and Animal Husbandry Extension Education × Thesis Type: M.Sc ×
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Now showing 1 - 3 of 3
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    ThesisItemOpen Access
    REPEATABILITY OF OESTRUS CYCLE LENGTH AND FACTORS AFFECTING IT, IN KANKREJ CATTLE
    (AAU, Anand, 1953) Jagani, C. K.; Patel, M. D.
    Abstract not Available
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    ThesisItemOpen Access
    STUDIES OF SOME FACTORS INFLUENCING THE BIRTH WEIGHT OF CALF IN KANKREJ CATTLE
    (AAU, Anand, 1953) Patel, T. D.; Patel, M. D.
    Abstract not Available
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    ThesisItemOpen Access
    CORRELATED STUDIES ON ENDOCRINE AND RESPONSES TO hCG IN INDUCING THE SECRETION OF MALE SEX HORMONES IN SURTI BUCKS OF DIFFERENT STAGES AND THEIR HISTOLOGICAL ASPECTS
    (AAU, Anand, 1992) Susha, N.; Mehta, V. M.
    The age related studies on development of gonads, spermatogenesis, sex steroid profiles, biochemical profiles and the endocrine and biochemical response to hcg challenge were undertaken in a well planned experiment carried out on Surti bucks between 15 days and three years of age. The age related biometry of gonads was studied after castration of Surti bucks of different age. The development of spermatogenesis was recorded with the help of histological sections wherein the biometry of seminiferous tubules and chronology of apperance of various cell types of spermatogenic appartus and interstitial cells were recorded. The gondal development was correlated with the four important blood biochemical profiles (total cholesterol, alkaline phosphatase ascorbic acid and inorganic phosphorus) and two sex steroid (testosterone and androstenedione). The blood levels of sex steroids in Surti bucks of different age were analysed by employing standard Radioimmunoassay technique. A few days before castration, a l l the animals of these experiments (n=21) were challenged with 200 and 500 IU of hCG injected intravenously and the secretory response of sex steroids (Testosterone and Androstenedione) and specific changes in blood biochemical profiles (Total cholesterol. Alkaline phosphatase. Ascorbic acid and Inorganic phosphorus) was recorded in serial blood samples collected at regular interval for eight hours. The data collected on gonadal biometry; spermatogenesis; blood sex steroids and biochemical profiles and endocrine and biochemical response of bucks to hCG challenge were statistically analysed following standard techniques. The studies on gonadal biometry(weight, circumfejrence, length and width) revealed close and positive age related development. Between 15 days and three years of age, the weight of test is increased 93 tinies, circxunference increased four times, length increased four times and width increased four times. After observing an initial slow phase of growth, the test is grew faster in later age. The histomorphological studies on development of spermatogenesis revealed that at three months of age, the process of differentiation of spermatogonia and initiation of spermatogenesis occur in Surti male kids. Till that period the spermatogenic cell types remain undifferentiated. The spermatogenesis progress towards formation of primary and secondary spermatocytic stage by six months of age and by the time Surti bucks are of one year of age, fullfladged spermatogenesis is recorded. The interstitial cells and Sertoli cells get fully differentiated at one year of age in Surti bucks. The blood profiles of sex steroids such as Androste nedione and Testosterone revealed age related changes. The basal, peak and mean level of testosterone at birth were found to be significantly (P<0.1) lower as compared to other age studies. The blood level of testosterone was significantly elevated by three months of age of Surti kids. However, the level declined significantly (P<0.05) at six months and one year of age of Surti bucks, A progressive rise in basal, peak and mean level of testosterone was observed beyond one year of age. The Androstenedione levels in blood, plasma remain at peak upto three months of age and then tended to decline with the advancement of age upto one year of age. The levels of this hormone were exceptionally higher in adult bucks. The age related sex steroid levels of Surti bucks follow the trends followed by other species of ruminants but the higher levels of androstenedione recorded in adult group of bucks(2 and 3 years) was a species peculiarity. The sex steroid profiles when correlated with the development of testis and spermatogenesis, it was evident that higher testosterone and androstenedione levels recorded at three months of age could boost up the biometrical development of gonad and initiation of spermatogenesis, Once the gonadal development and spermatogenesis has been initiated, further to this sex steroid support was not found to be essential. This is suggested by low levels of both the sex steroids at six months and one year of age recorded in present studies. It was evident from the historaorphological and endocrine studies that the undifferentiated Leydig cells (mesenchymal cells) are in position to secrete sex steroids in growing Surti males. The studies on blood biochemical profiles in relation to age of Surti bucks revealed that the total cholesterol and ascorbic acid levels rise parallel with advancement of age but the blood plasma alkaline phosphatase (AKP) activity exhibit an opposite trend. The blood plasma inorganic phosphorus level tended to remain stable upto one year of age and then it declines. The blood plasma total cholesterol and ascorbic acid tried to associate positively with blood plasma testosterone level in different age groups of Surti bucks but similar association was not established either for serum AKP or inorganic phosphorus. The studies carried out on the age related steroid hormone secretory response with hCG treatment indicated that the Surti kids of neonatal age were also responsive to this challenge in causing secretion of both testosterone and androstenedione. The time taken for exhibiting sex steiroid secretory response was inversely related with the age. The bucks of three months of age exhibited significantly higher (P<0.01) sex steroid secretory response as compared to six months and one year old bucks. The undifferentiated Leydig cells were responsive to hCG challenge in younger group of bucks. The increasing dose of hCG had caused more secretion of androstenedione even in older group of animals. Ob establish the physiological role of hCG (IH) and testosterone in regulating blood levels of Total cholesterol. Alkaline phosphatase. Ascorbic acid and Inorganic phosphorus, the serial blood sanples collected from Surti bucks of 15 days to three years of age were analysed for these estimates. The studies revealed that hCG treatments caxised significant change in mean plasma level of total choles-herol, ascorbic acid and inorganic phosphorus but effects on blood plasma alkaline phosphatase (AKP) levels were nonsignificant. The fluctuations in levels of total cholesterol and ascorbic acid in blood plasma to some extent could be related with testosterone secretory response and it was possible to establish that through testosterone secretory response the hCG (LH) was in position to modulate the levels of total cholesterol and ascorbic acid. The above studies showing close correlationship between gonadal and endocrine development in Surti bucks are first of their kind for goat species.