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2019 - 20202
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Subject: Animal Reproduction, Gynaecology and Obstetrics × End date: 2020 × Start date: 2019 × Type: Thesis × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    TRANSRECTAL DOPPLER SONOGRAPHY OF OVARIAN STRUCTURES AND UTERUS DURING ESTROUS CYCLE IN DAIRY COWS
    (CHKHPKV Palampur, 2020-09-19) SONI, TANIA; Singh, Madhumeet
    The study was conducted atInstructional Livestock Farm Complex, ChaudharySarwan Kumar Himachal Pradesh Agricultural University, Palampur. Ten dairy cows were selected for research and subjected to sonographic examination of ovarian structures from the day of estrus till completion of one estrous cycle using B-mode and color Doppler mode ultrasonography. Developmental pattern of follicles and corpus luteum during two- and three-follicular waves of estrous cycle were studied. The per cent vascularity of corpus luteum during different luteal phases and blood flow to uterus was evaluated based on the analysis of Doppler haemodynamic indices at an interval of 48 hours during an estrous cycle. Two-wave estrous cycle was more prevalent in dairy cows as compared to three-wave estrous cycle and there was no significant difference (p>0.05) between the diameter of dominant follicle during different waves of two- and three-wave estrous cycle. Corpus luteum diameter and vascularity were significantly higher (p<0.01-0.05) during mid-luteal phase as compared to early and late luteal phase except in three-wave estrous cycle. Corpus luteum vascularity percentage was significantly higher in dairy cows (p<0.05) during late luteal phase in three-wave cycle as compared to two-wave cycle who failed to conceive. Also, there was a significant correlation (p<0.05) between corpus luteum diameter and vascularity irrespective of follicular waves and different luteal phases. A significant difference (p<0.01-0.05) between the recorded haemodynamic indices of middle uterine artery ipsilateral and contralateral to pre-ovulatory follicle was recorded on the day of estrus, however, this difference was found to be non-significant (p>0.05) with the progression of estrous cycle into luteal phase.
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    ThesisItemOpen Access
    ETIO-PATHOLOGY AND MANAGEMENT OF UTERINE TORSION IN BOVINES OF HIMACHAL PRADESH
    (CSKHPKV. Palampur, 2019-07-19) ABROL, ANKUR; Singh, (Madhumeet
    The present study was planned with the objectives of recording of incidence of uterine torsion in cattle and buffaloes of Himachal Pradesh and to determine the success rate of different procedures adopted to treat uterine torsion. The study was conducted in two parts. First part comprised of field survey of cases presented under field conditions of Himachal Pradesh and conducted through questionnaires. Second part comprised of recording of clinical observations, obstetrical interventions, haemato-biochemical and Doppler sonographic studies of middle uterine artery of torsion affected bovines presented in Teaching Veterinary Clinical Complex (TVCC) of college of Veterinary & Animal Sciences, Palampur, Himachal Pradesh. In the field conditions of Himachal Pradesh buffaloes were more commonly presented with uterine torsion as compared to cows and right side and post cervical torsion was encountered more frequently as compared to left side and pre cervical uterine torsion. Modified Schaffer’s method was used more often than Caesarean section under field conditions to correct the condition and has a better dam and calf survival rate as compared to Caesarean section method. Among the uterine torsion affected bovines presented in TVCC, haematological analysis of uterine torsion affected cows and buffaloes showed a significant decrease (p<0.05) in haemoglobin and lymphocyte concentration while there was a significant increase (p<0.05) in granulocyte and cortisol concentration as compared to eutocial cows and buffaloes, respectively. Resistance index was significantly higher (p<0.05) in middle uterine artery ipsi-lateral to uterine torsion affected cows as compared to eutocial cows. Blood flow volume and blood vessel diameter of ipsi-lateral middle uterine artery was significantly reduced (p<0.01) in uterine torsion affected cows and buffaloes as compared to the eutocial cows and buffaloes, respectively. Significantly higher blood flow volume on TAMAX basis (p<0.01; p<0.05) was discernible in middle uterine artery ipsi-lateral to the gravid horn as compared to the contralateral artery in normal eutocial cows and buffaloes.