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Prevalence and management of ovulatory disturbances in cross-bred cattle.
2011
Bhattacharyya, H. K. | Khan, M. Z. | Bhatt, F. A.
Prevalence and management of ovulatory disturbances was recorded from 454 repeat breeding crossbred Jersey cattle of Kashmir valley during a 7 years period (2004-05 to 2010-11). Prevalence of anovulation and delayed ovulation was recorded 16.30 and 12.78% with an overall prevalence of 29.07% ovulatory disturbances. Anovulatory animals treated with RCG (Chorulon @ 1500 to 3000 IV i.v. per animal depending on body weight) showed conception rate (CR) of 86.36%; while those treated with Buserelin (Receptal @ 5ml Lv. per animal) as 100.00%, although this difference was statistically non-significant. Animals suffering from delayed ovulation inseminated twice, thrice or 4th times depending on the persistence of estrus signs showed overall CR of 87.93%.
Show more [+] Less [-]Evaluation of lactate dehydogenase, alkaline phosphatase and aspartate aminotransferase activity in milk as an indicator of subclinical mastitis in Holstein x Hariana cows.
2011
Gera, Sandeep | Guha, Anirban
Pertaining to the scenario at hand milk samples from Holstein x Hariana crossbred cows were investigated for alternation in enzyme activity as influenced by sub clinical mastitis (SCM) and their percent sensitivity,specificity,accuracy,positive and negative predictive values, positive and negative likelihood ratios and correlation with (somatic cell count) SCC were calculated. It was found that SCM influence significantly the activity of ALP at pO.OIand LDH at pO.O5in milk. Aspartate amino transferase activity was not influenced by SCM in milk. Moreover, both were found to be correlated with somaticcellcount, significantly.Fromthe likelihoodratios itwas clearthat both alkalinephosphatase (ALP) and LDH can be used for diagnosis of SCM, but, ALP is the safe indicator of SCM in the present study.
Show more [+] Less [-]The administration of GnRH plus PGF2 alpha synchronizes the estrus in anestrus crossbred cows exposed to bull urine.
2011
Ahmad, S. | Kumar, H. | Singh, G . | Patra, M.K.
The objective of this experiment was to study wheather the administration of GnRH plus PGF2 alpha synchronizes the estrus in anestrus crossbred cows exposed to bull urine (BU) during the winter season (Nov to Feb). The results indicated that a greater proportion of BU-exposed cows (n=20) showed estrus as compared to control (n=8) (90 vs 37.5 % P0.05). The mean plasma progesterone concentration remained below 1ng/ml in all animals of each group during the treatment period. The overall conception rate was double in BU-exposed cows (66.7 vs 33.3 % P0.05). From this experiment it can be concluded that oro-nasal application of BU synchronizes the estrus in a greater proportion of anestrus cows treated with GnRH plus PGF2 alpha during winter season.
Show more [+] Less [-]Prevalence of flurosis in crossbreds on an organized farm.
2011
Ulemale, A. H. | Kulkarni, M. D. | Zambre, P. C. | Yadav, G. B. | Jadhav, Y. B.
The herd strength of the farm was 480 crossbreds containing 393 females and 87 males, out of which 43 females and 15 males suffered from fluorosis leading to overall prevalence of 12.08 %. It is revealed that overall prevalence in males (17.24 %) was higher as compare to the females (11.05%). The prevalence in males below six months of age group and in six months and above (adults) was recorded to be 16.66 % and 17.46 % respectively. The adults and calves were equally susceptible to fluorosis in both sexes while heifers were least susceptible (3.12 %). Genetic group wise studies concluded that,prevalence in Brown swiss 50 % + Holstein Frisian 25 % + Gir 25% (16.88 %), then comes Holstein Frisian 50 % + Gir 50 % (15.84 %), then (11.94 %) in Holstein Frisian 50 % + Jersey 25 % + Gir 25% and least (5.95 %) was recorded in reciprocal crosses. Clinical examination revealed two forms viz: osteodental fluorosis and osteofluorosis. The level of fluorine in serum samples ranged between 1.0 to 7.0 ìg/ml. Epidemiological investigation could not ascertain the source of fluorine intake. Drop in milk production, adverse effect on reproduction and evidence of hypothyroidism were not recorded in any animal. Aluminium sulphate @ 30 gms to 45 gms / day was given as a curative treatment while in chronic cases of fluorosis @ 20 gms/animal was given for 15 days keeping 7 days gap and again given for 15 days till there is improvement in clinical symptoms. There was no recurrence of clinical symptoms and no addition of new cases. __________________________________________________________________
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