Thumbnail Image

Kerala Agricultural University, Thrissur

The history of agricultural education in Kerala can be traced back to the year 1896 when a scheme was evolved in the erstwhile Travancore State to train a few young men in scientific agriculture at the Demonstration Farm, Karamana, Thiruvananthapuram, presently, the Cropping Systems Research Centre under Kerala Agricultural University. Agriculture was introduced as an optional subject in the middle school classes in the State in 1922 when an Agricultural Middle School was started at Aluva, Ernakulam District. The popularity and usefulness of this school led to the starting of similar institutions at Kottarakkara and Konni in 1928 and 1931 respectively. Agriculture was later introduced as an optional subject for Intermediate Course in 1953. In 1955, the erstwhile Government of Travancore-Cochin started the Agricultural College and Research Institute at Vellayani, Thiruvananthapuram and the College of Veterinary and Animal Sciences at Mannuthy, Thrissur for imparting higher education in agricultural and veterinary sciences, respectively. These institutions were brought under the direct administrative control of the Department of Agriculture and the Department of Animal Husbandry, respectively. With the formation of Kerala State in 1956, these two colleges were affiliated to the University of Kerala. The post-graduate programmes leading to M.Sc. (Ag), M.V.Sc. and Ph.D. degrees were started in 1961, 1962 and 1965 respectively. On the recommendation of the Second National Education Commission (1964-66) headed by Dr. D.S. Kothari, the then Chairman of the University Grants Commission, one Agricultural University in each State was established. The State Agricultural Universities (SAUs) were established in India as an integral part of the National Agricultural Research System to give the much needed impetus to Agriculture Education and Research in the Country. As a result the Kerala Agricultural University (KAU) was established on 24th February 1971 by virtue of the Act 33 of 1971 and started functioning on 1st February 1972. The Kerala Agricultural University is the 15th in the series of the SAUs. In accordance with the provisions of KAU Act of 1971, the Agricultural College and Research Institute at Vellayani, and the College of Veterinary and Animal Sciences, Mannuthy, were brought under the Kerala Agricultural University. In addition, twenty one agricultural and animal husbandry research stations were also transferred to the KAU for taking up research and extension programmes on various crops, animals, birds, etc. During 2011, Kerala Agricultural University was trifurcated into Kerala Veterinary and Animal Sciences University (KVASU), Kerala University of Fisheries and Ocean Studies (KUFOS) and Kerala Agricultural University (KAU). Now the University has seven colleges (four Agriculture, one Agricultural Engineering, one Forestry, one Co-operation Banking & Management), six RARSs, seven KVKs, 15 Research Stations and 16 Research and Extension Units under the faculties of Agriculture, Agricultural Engineering and Forestry. In addition, one Academy on Climate Change Adaptation and one Institute of Agricultural Technology offering M.Sc. (Integrated) Climate Change Adaptation and Diploma in Agricultural Sciences respectively are also functioning in Kerala Agricultural University.

Browse

20071
Reset filters
Author: Deepa, S × Start date: 2000 × Type: Thesis × Thesis Type: M.V.Sc. ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on in vitro maturation of porcine follicular oocytes
    (Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, Mannuthy, 2007) Deepa, S; KAU; Vijayakumaran, V
    A study was designed and carried out to evaluate the effect of different retrieval methods like aspiration, slicing, puncturing and post aspiration slicing on yield of different grades of oocytes and their in vitro maturation potential. The effect of cumulus oocyte complex morphology and culture duration on in vitro maturation of porcine oocyte was also studied. a total of 40 follicular and 36 luteal stage ovaries obtained from Large White Yorkshire, Landrace and Duroc pigs were used for the study. Each quality grade of oocyte obtained through four retrieval methods was subjected to maturation for 42 h in TCM-199 medium supplemented with LH, FSH, estradiol, pyruvate and foetal calf serum. Culture environment was set as 38.5°C temperature, 5 per cent CO2 and maximum humidity in standard water-jacketed CO2 incubator. Maturation changes were assessed by observing the degree of cumulus expansion at 24h, 36h and 42h of incubation. There was no significant difference in oocyte yield from follicular and luteal stage ovaries even though the surface follicle distribution was different significantly. Slicing, puncturing and post aspiration slicing did not differ significantly in the yield of total number of oocytes per ovary. But the yield from aspiration was significantly lower compared to other methods (7.64 vs.33.83, 33.43, 25.42). The percentage yield of good quality (A and B) oocytes was more from aspiration than slicing, puncturing or post aspiration slicing. The percentage yield of D grade oocyte was more from post aspiration slicing method. The percentage of maturation for aspiration, puncturing, slicing and post aspiration slicing were 68.07, 64.63, 64.17 and 45.56 per cent respectively. It was found that the maturation rate for post aspiration slicing was significantly lower than other methods. The maturation rate for A grade, B grade and C grade oocytes were found to be 66.67, 65.29 and 54.84 per cent respectively. A and B grade oocytes were not significantly different in the maturation rate. At zero hour culture all the oocytes were devoid of any detectable response of maturation. At 24h, 81.33 per cent oocytes showed minimum observable response. At 36 h, 72 per cent oocytes showed expansion limited to the outer layer of cumulus cells. At 42h, about 62.28 per cent COCs showed maximum degree of cumulus expansion. The over all cumulus expansion rates was found to be 64 per cent and nuclear maturation rate was 62 per cent. Slicing and puncturing were found to be good methods for the collection of oocytes from porcine ovaries. These two methods yielded higher number good quality oocytes with satisfactory level of maturation rate. Among A, B and C grade oocytes A and B grade oocytes showed a higher maturation rate indicating that the oocytes with more than three layer of cumulus cells are better for in vitro maturation. For the completion maturation process in porcine oocytes a minimum period of 42h was found essential.