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TI - Volume 5 - Issue 2

[<<< GO BACK ][ VOLUME 5 - ISSUE 2 ]

Title: Estimates of Genetic Parameters and Trends of Lactation Performance Traits of Deoni Cattle
Abstract :

Data on 114 Deoni cows maintained at Cattle Cross Breeding Project, Vasantrao Naik Marathwada Agriculture University, Parbhani over a period of 25 years were used for the present investigation. The data were subjected to assess the effect of period of calving, season of calving, lactation order and age at first calving on persistency and lactation traits. The records corrected for significance and non-genetic factors were used for estimating genetic parameters of the milk production traits. Least squares means for persistency of milk yield in Deoni cattle by Mahadevan method was 2.98±0.20. The significant effect of period of calving was recorded on 305 DMY, LL, PY and DAPY and non-significant effect, was recorded on persistency of milk yield, lactation milk yield .The non-significant effect of season of calving & lactation order was recorded on persistency of milk yield & all milk production traits. The significant (P<0.05) effect of age at first calving was observed only on lactation length. It showed increasing trend from A1 to A3. Moderate to high estimates of heritability for all lactation traits were observed indicating improvement in these traits, which may probably be brought about by individual selection. Moderately high heritability was observed for persistency of milk yield (0.36 ± 0.23) and LL (0.25 ± 0.23).

Title: In Vitro Maturation of Bubaline Oocytes in Three Different Culture Media (TCM 199, Ham’s F 10 and Way mouth MB medium)
Abstract :

In order to evaluate the effect of media on in vitro maturation, culturable grade buffalo oocytes were matured in vitro in three different media (Ham’s F-10, Waymouth MB and TCM-199) with same supplements (5µg/ml FSH, 5µg/ml LH, 1µg/ml estradiol, 25 mM Hepes, 0.25 mM pyruvate and antibiotics). The overall mean culturable grade oocyte recovery was 3.12±0.20. At the end of experiment all oocytes in all groups were fixed and stained to evaluate the nuclear status. Oocytes were considered mature if they were at metaphase II. Significantly higher (P<0.01) proportion of oocytes were matured in vitro in Waymouth medium compared to Ham’s F-10. In TCM-199, IVM rates were non-significantly higher compared to Ham’s F-10 and non-significantly lower compared to Waymouth MB medium. It was concluded that Way mouth MB medium is the most appropriate medium for in vitro maturation of buffalo oocytes followed by TCM-199 and Ham’s F 10.

Title: Conception Rates after Cervical Insemination of Freshly Diluted Semen and Chilled Semen in Nellore Sheep (Jodipi)
Abstract :

This study was undertaken to evaluate the conception rate in Nellore sheep (Jodipi) with fresh diluted semen and chilled semen at 24 and 48h (stored at 5°C). Semen was collected, diluted with Tris Citric acid Fructose Yolk diluent and stored at 5°C for 24 and 48h to undertake cervical artificial insemination in 63 ewes at natural estrus. Conception rates were 61.90, 47.62 and 42.86% with diluted semen and chilled semen stored for 24 and 48h, respectively based on 25 day non return rates. Therefore, it was concluded that Artificial Insemination with both freshly diluted semen and chilled semen stored up to 48 h can used with good conception rates.

Title: Fetal Dystocia due to Postural Defects of Neck and Carpals in a Jenny: Case Report
Abstract :

This article puts on record successful management of dystocia due to lateral deviation of head and neck and flexion of carpal of both forelimbs in a jenny. A 5 year old jenny in her first parity was presented to outpatient department of Veterinary Teaching Hospital, College of Veterinary and Animal Sciences, G.B. Pant University of Agriculture and Technology, Pantnagar with a history of complete gestation, straining since morning, the water bag ruptured and treated by a local vet without any success. Per vaginal examination revealed complete dilatation of cervix and dry foaling passage. The case was diagnosed as dystocia due to lateral deviation of head and neck and flexion of carpal of both forelimbs. The postural abnormalities of the fetus were corrected by applying repulsion on the brisket region and the head and neck were brought into normal posture by holding the mouth of the fetus in the palm. The fore limbs were brought to normal posture by grasping the hoof of the fetus and straightened one by one. Snares were applied on both the fore limbs at fetlock joint and a blunt eye hook was placed in the right orbit of the fetus. The fetus and the foaling passage were thoroughly lubricated with liquid paraffin and traction is applied. A dead male foal was delivered per vaginally after applying traction. Post operative medication of the jenny was done and healthy recovery was observed

Title: Identification of bacterial and fungal agents of clinical endometritis in dairy heifers and treatment by metronidazole or cephapirin
Abstract :

This study was aimed to identify fungal and bacterial causes of clinical endometritis as the first study in one hundred thirty dairy heifers by culture and PCR methods, and also to evaluate intrauterine cephapirin and/or metronidazole treatments. Although there were no growth of bacteria and fungi agents in all samples but PCR results showed the presence of E.coli and Trueperella pyogenes in six heifers. Conception rate of the treated heifers with metronidazole and cephapirin was significantly higher than that of untreated heifers. Heifers in metronidazole-treated group had higher conception rate compared to cephapirin group but the difference was not significant. A greater conception rate was observed in heifers that had clear discharge at time of insemination, compared to heifers with mucopurulent or opaque discharges. The results of this study showed that the pregnancy rate of treated heifers was significantly higher than that of untreated heifers. It could be concluded that treatment of affected heifers and the clear discharges at the time of AI could improve conception rate.

Title: Studies on Estrual Cervical Mucus of Repeat Breeding Cows with Special Reference to Ovulatory Disturbances and Genital Infection
Abstract :

A total of 100 crossbred Jersey cows comprising of 80 repeat breeder presented for treatment and 20 clinically healthy (control group) animals presented for artificial Insemination at their first service within 60-90 days following calving were selected. Estrual cervical mucus were examined for physical properties and white side test (WST). Effects of ovulatory disturbances and non specific bacterial genital infection on physical properties of cervical mucus were also determined. The volume, colour, consistency, stringiness, fern pattern and spinnbarkeit values of cervical mucus were not affected by ovulatory disturbances, while, colour, consistency and pH showed significant (p < 0.01) changes due to non-specific bacterial genital infection. The results of WST showed significant (p < 0.01) positive correlation (0.484) with bacterial culture. It is concluded that ovulatory disturbances have no impact on altering physical characteristics of estrual cervical mucus; however, colour, consistency and pH of cervical mucus are greatly influenced by nonspecific bacterial genital infection in repeat breeding cattle.

Title: Heat (Estrus) Detection Techniques in Dairy Farms- A Review
Abstract :

Dairy producers who achieve reasonably good pregnancy rates in dairy animals are always benefited from improved heat detection. Proper heat detection is to know the appropriate timing of insemination is the biggest constraint in attaining high conception rate in a herd. Boosting heat detection rates by 10 to 20 percentage points could be invaluable to increasing your herd’s pregnancy rates. Traditional heat detection methods involve visual observation of sexual behavior displayed by the cows. Accuracy of visual observation varies according to the expertise of farm personnel, frequency of observation, housing and footing conditions, and milk production levels. The challenge of an excellent heat detection program is not only identifying animals in correct estrus (accuracy), but also not missing any heat activity displayed (efficiency). Generally, well trained farm personnel are quite accurate in identifying the cows in heat, but lack of efficiency of observing all possible cows in heat is the limiting factor. Therefore aids/techniques of heat detection along with visual observation for improving efficiency of heat detection in turn it can give better results in the form productivity in the dairy farms.

Title: Congenital Rectovaginal Fistula with Atresia Ani Et Recti in a Calf
Abstract :

The present paper deals with technique of correction of congenital anomaly of rectovaginal fistula with atresia ani et recti in a calf. Epidural anaesthesia was given with 2% lignocaine hcl @ 2 mg/ kg body weight. In the present case rectovaginal fistula was identified too cranially along with peripheral adhesions and laparatomy was choosen to approach rectal end. Laparatomy was done on left flank and the caudal alimentary tract was identified. The rectum was fixed to artificial opening of anus. The rectovaginal fistula was repaired by placing interrupted sutures in roof of vagina.

Title: The Effect of Cock: Hen Ratio on Reproduction Performance of Koekoek Chickens in the Lowlands of Lesotho
Abstract :

The objective of the study was to investigate the effect of cock: hen ratio on the reproductive performance of Koekoek chickens. Fifty seven hens and nine cocks were randomly allocated to three cock: hen ratio treatments in a Completely Randomized Design (CRD). The cock: hen treatments were 1:3, 1:6 and 1:10 at 37 weeks of age. The birds were allocated into nine pens and each treatment was replicated three times. Thirty eggs were incubated from each replicate hence 270 eggs were used. Data was collected and analyzed using SPSS (17.00). The results revealed that the chickens that were assigned to cock: ratio of 1:10 performed similar to the ones in the sex ratios of 1:3 and 1:6 in terms of fertility. Cock: hen ratio did not have any effect on hatching percentage and embryo mortality. Therefore, when looking at the cost of raising cocks and the level of infighting among the cocks, it would be advisable for the farmers to rear one cock for every ten hens. Koekoek chickens, egg size, fertility rate, hatchability, embryo mortality

Title: Successful Treatment of Fetal Mummification in a Bitch by Caesarean Section: A Case Report
Abstract :

A four year old Labrador bitch was presented with a history full term gestation and non-progessive signs of labor with uterine discharge. Per vaginal examination showed dilated birth canal without any fetus. Plain radiography revealed presence of bony structures in the uterus. Induction of labor with oxytocin and calcium was futile. Upon C-section, mummified (n=5), was removed along with normal fetus. The bitch recovered uneventfully following normal post-operative management.