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Articles by K.C. Dhara
Total Records ( 2 ) for K.C. Dhara
  K.C. Dhara , N. Ray , S. Roy , A.K. Samanta and P.K. Senapati
  Present study was undertaken to ascertain the improvement of reproductive performances through selective breeding. Reproductive data of 339 Black Bengal goats comprising of 2 genetic groups namely selective mating group and random mating group was recorded during the year 2004-05 and 2005-06. The study was conducted in 3 adopted villages namely Hatikanda, Ganguria and Panchpota villages in the Nadia district of West Bengal state of India under All India Coordinated Research Project on goat improvement, Black Bengal Field Unit. It was observed that effect of years, villages or genetic groups on age at first mating, age at first kidding, service per conception, weight at first mating, gestation period, service period and kidding interval was nonsignificant while effect of selection was significant (p<0.05) on weight at first kidding. The does of the selective group came on heat, served and kidded early during the year 2005-06 in comparison to the previous year. The kidding interval as well as service period was also decreased among the goats of selective group and service required per conception was also less. The body weight at first kidding of Black Bengal does of selective group was higher than random mating group during 2005-06. The reproductive efficiency was improving through selective breeding of Black Bengal goat under field condition. Indication of the result of present study was justifying the selection process as well as effectiveness for conservation of Black Bengal goat in their home tract.
  G. Halder , G. Samanta , S. Mondal , B. Roy , K.C. Dhara and S. Koley
  An experiment was conducted to find out the effect of excess methionine and methionine-betaine supplementation on deposition of arsenic in different tissues, organs and eggs of hen and contribution of hen egg and meat to human health hazard along with the arsenic contaminated drinking water. One hundred twenty Rhode Island Red, 16 week-old, were allocated into four groups having three replicates with nine hens and one cock in each replicate. The experimental groups were C (control group fed with basal diet only), T1 (fed control diet with 5.5 ppm arsenic through water), T2 (fed control diet with 5.5 ppm arsenic through water + 50 g methionine per 100 kg of feed) and T3 (fed same as T2 but 50% of the excess methionine supplement was replaced with betaine). The birds were maintained in deep litter system of housing. Statistical analysis confirmed that the concentration of arsenic in different organs, tissues and eggs were varied significantly (p< 0.01) due to dietary treatments. The long term intake of such arsenic contaminated hen eggs and meat by human being may act as some contributory factor to suffer from the serious health hazard. Statistical analysis confirmed that the concentration of arsenic (As) in various organs, tissues and eggs was significantly (p< 0.01) reduced due to supplementation of methionine and methionine-betaine in T2 and T3 groups, respectively as significantly (p< 0.01) larger amount of arsenic was voided through faeces in T2 and T3 groups than T1 group where no excess methionine or betaine was added in diet. So it may be concluded that supplementation of either methionine or methionine-betaine combination may able to protect the chronic arsenic toxicity during exposure of As in laying hen.
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