Browsing by Author "Prabhakaran, V"
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ArticleItem Open Access BASELINE STUDIES ON RD IMMUNITY IN BROILERS(1993) Prabhakaran, V; Dhinakaran, Manorma; Appaji Rao, VN; TANUVASThe baseline study on RD immunity done on batches A and B using 50 and 30 chicks respectively, revealed the following: (1) Chicks which were vaccinated with RDVF on the 7th day and challenged with RD virulent virus on the 28th day showed a survival rate of 130 percent while chicks which were challenged on 49th day showed only 73.3 per cent survivability.ThesisItem Open Access Influence of Infectious Bursal Disease (IBD) Infection on Immunity to Ranikhet Disease (RD) in Broilers(TANUVAS, 1992) Prabhakaran, V; TANUVAS; Dhinakaran, Manorma; Mathew, C. John; Ramkrishna, JOtherItem Open Access INFLUENCE OF OXIDATIVE STRESS IN CORPUS LUTEUM FUNCTION AND CONCEPTION RATE IN REPEAT BREEDER COWS(2019-12) Prabhakaran, V; Selvaraju, M; Ezakial Napolean, R; et al.; TANUVASRepeat breeder cows between second and fifth parity were selected and they were randomly and equally divided into five groups as Group I, II, III, IV and V, each group consisted of 20 cows. Out of 128 repeat breeding cows, 100 cows (78.13 per cent) were selected for the study based on the white side test and it indicated 21.87 per cent repeat breeding cows were affected with subclinical uterine infections. There were 100 and 90 per cent oestrus responses in group IV and V, respectively. There was no significant difference in the mean duration of oestrus among groups II, III and IV. However, these 3 groups significantly (P≤0.05) differed from group I and V. The difference in mean duration of oestrus between group I and V was statistically significant (P≤0.05). The highest percentage (75 per cent) of cows in group II exhibited intense oestrus intensity followed by group IV in which 60 per cent cows showed the same. Pregnant and non-pregnant cows of all the groups had a gradual increase in the diameter of CL from day 5 to 60 and day 5 to 15, respectively. There was a drastic reduction in the diameter of the CL on day 20 in the non-pregnant cows of all the groups.The mean diameter of CL in non-pregnant cows was lower than pregnant cows in different days in all the treatment and control groups. From day 5 to 60, diameter of the CL was higher in group II pregnant cows than the other groups. In group I, II, III, IV and V, the percentages of conception rate were 40, 75, 55, 60 and 50, respectively. When compared to control (40.00 per cent), all the experimental groups exhibited high rate of conception with the highest conception rate in group II (75.00) followed group IV (60.00), III (55.00) and V (50.00 per cent). Hence, it is concluded that administration of antioxidants along with mineral mixture improved the conception rate in repeat breeder cows.ArticleItem Open Access STUDIES ON THE EFFECT OF IBDV AND RDV CHALLENGE ON RD IMMUNITY IN BROILERS(1995) Prabhakaran, V; Dhinakaran, Manorama; Appaji Rao, VN; TANUVASThe effect of BDV and ROV challenge on RD immunity was studied on 30 IR-2 broiler chicks. It was found that those birds which were vaccinated with RDV-F on 7th day intranasally and chaIlenged on 30th day showed a survival rate of 40% while those birds vaccinated with RDVF on 7th day intranasally and challenged 50th day showed a still lower survival rate of30%, inspite of high HI titres and ELISA values. This could be suggestive of immunosuppression against RD consequent to IBD challenge.OtherItem Open Access SUCCESSFUL MANAGEMENT OF FETAL MUMMIFICATION IN A JERSEY CROSSBRED HEIFER(2019-12) Rajkumar, R; Prabhakaran, V; Raja, S; et al.; TANUVASA three years old Jersey crossbred heifer was brought to Veterinary Clinical Complex, VCRI, Orathanadu with the history of not showing signs of parturition even after completing full term gestation period. The animal was inseminated 10 months back and confirmed as pregnant 3 months later. On clinical examination, all the vital parameters were normal. The vaginal examination revealed closed cervix with intact cervical seal. During rectal examination, the cervix was located at pelvic brim; the uterus was descended into abdominal cavity. The uterine wall was thick and tightly contracting around the fetus. Hard and firm mass of fetus was palpated inside the uterus. Rectal examination also revealed absence of fetal fluid, placentomes and fremitus. On ultrasound examination, the absence of fetal fluid and placentomes were confirmed. Thus, the case was diagnosed as fetal mummification. The animal was treated with 500 μg of Cloprostenol sodium (PGF2α) intramuscularly. After 3 days of PGF2α injection, the cervix was fully dilated and hard mass of fetus with empty orbit was present inside the uterus. After lubrication of birth canal with carboxy methyl cellulose, mummified fetus was removed by manual traction. The fetus was reddish brown in colour and eye balls were empty. After removal of the fetus, the animal was treated with Inj. Enrofloxacin (1500 mg, I/M), Inj. Meloxicam (100 mg, I/M), Inj. Chlorpheneramine maleate (100 mg, I/M), and Inj. Oxytocin (40 IU, I/M). The treatment with antibiotic and supportive therapy was continued for 3 days. The animal had an uneventful recovery and resumed estrous cycle after 45 days.ArticleItem Open Access SURGICAL MANAGEMENT OF HAEMATIC FETAL MUMMIFICATION BY C-SECTION IN A JERSEY CROSSBRED COW(2020-01) Prabhakaran, V; Raja, S; Rajkumar, R, et al.; TANUVASFetal mummification is one of the gestational accidents that occur due to intra-uterine death of fetus commonly at fourth, fifth and six months of gestation. A 4 years old pluriparous Jersey crossbred cow was brought to the Obstetrics Unit of VCC, VCRI, Orathanadu with history of mild vaginal discharge, anorectic for past one day. The cow was inseminated 8 months back. On clinical examination animal was found to be normal. Vaginal examination revealed two fingers dilated external os of the cervix with thickened wall. During the rectal examination, the uterus was located in the abdominal cavity with hard and firm mass of the fetus inside the tightly contracted uterus was palpated, absence of the fetal fluid, fetal movement and placentomes were confirmed. A tentative diagnosis of fetal mummification was made with a strong probability of an anomalous fetus. The animal was treated for induction of parturition with PGF2α (500 μg; i/m) for the course of two days and observed for 72-96 hours. The animal was repeatedly examined for the dilatation of the cervix daily for 3 days but animal does not respond to the PGF2α treatment. Therefore, C section was performed as per standard protocol and a mummified fetus was delivered. The fetus was reddish brown in color and the eye balls were empty. Post operatively the animal was treated with antibiotic, anti-inflammatory, antihistamines for seven days as in patient in VCC, VCRI, Orathanadu. The animal had an uneventful recovery. After 60 days animal resumed normal estrous cycle.