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Articles by D. Nagalakshmi
Total Records ( 3 ) for D. Nagalakshmi
  D. Nagalakshmi and K. Dhanalakshmi
  An experiment was conducted to study the effect of utilizing Castor (Ricinus communis) Seed Cake (CSC) (30-45% Crude Protein; CP) as sole protein supplement, replacing groundnut cake (GNC) on growth performance, nutrient utilization, immune response and carcass traits in lambs. Two isonitrogenous and isocaloric complete diets (10.5% CP and 58% TDN) were formulated with 13% GNC and 10% CSC and fed ad libitum to 14 Nellore male lambs (27.54+1.154 kg), divided at random into two groups of seven animals for a period of 150 days. The lambs in both groups grew linearly with average daily gain of 75.33 and 74.28 g, respectively with no significant difference. Inclusion of CSC did not affect the Dry Matter (DM) and CP intake and was comparable to that of control lambs but the intake of metabolizable energy was lower (p<0.01) in CSC fed lambs. The lambs fed either GNC or CSC utilized DM and nutrients with similar efficiency. Inclusion of CSC in complete diets of lambs did not affect the nutrients digestibility, balances of nitrogen, calcium and phosphorus, hematological (haemoglobin, total erythrocyte and leucocyte counts) and biochemical constituents (total protein, albumin, globulin and creatinine) except for higher (p<0.01) digestibility of crude fibre in CSC fed lambs compared to GNC feeding. While, the antibody titers against heat killed Brucella abortus and chicken RBC antigens assessed at 75 day of feeding and the skin indurations against PHA-P mitogen, assayed at 150 day of feeding was lower (p<0.01) with CSC feeding. The carcass characteristics (dressing percentage, proportion of meat, bone and fat, proportion of edible and non-edibles, whole sale cuts, organ weights and chemical composition of Longissimus dorsi muscle) were not influenced by inclusion of CSC as sole protein supplement. Histopathological lesions observed were mild to moderate areas of necrosis, congested blood vessels with increased kuffer cell activity in liver, swollen kidney tubules with increase in mononuclear cell infiltration, decreased goblet cell activity and infiltration of neutrophils in intestines. The study suggested no adverse effect on the nutritional performance and carcass traits of lambs with inclusion of 10% CSC in complete diets but the immune response was depressed and lesions of pathological significance was observed in vital organs compared to GNC fed lambs.
  J. Narasimha , D. Nagalakshmi , S.T. Viroji Rao , M. Venkateswerlu and Y. Ramana Reddy
  A total of 150 Cobb broilers were divided into 5 groups. These groups were fed a complete corn-soybean based standard and sub optimal energy diets supplemented with non-starch polysaccharide enzymes alone or in combination with phytase. No significant difference was observed among the broiler chicks fed SD, BD and BD supplemented with NSP enzymes, phytase alone or in combination on body weight gain. The feed intake by chicks fed BD, BD supplemented with NSP enzyme and/or phytase was higher (p<0.01) in starter phase while lower in (p<0.01) finisher phase compared to SD fed chicks and therefore the overall feed intake from 0-6 weeks was comparable. The FCR improved (p<0.01) with supplementation of both NSP enzymes and phytase during starter phase while no effect was observed during finisher and overall period. The addition of NSP enzymes and phytase to BD significantly (p<0.05) improved retention of OM, CP, NFE, GE and phosphorus with no effect on DM, CF and EE retentions. Supplementation of NSP enzymes and phytase alone and in combination of improved (p<0.01) percent tibia ash content compared to BD. No effect of phytase and NSP enzymes was observed on dressing yield, abdominal fat, weight of visceral organs, intestinal pH and intestinal histology except improvement in (p<0.05) breast yield and reduced (p<0.05) intestinal viscosity and E. coli count. The cost of feeding during various phases of broiler production was significantly (p<0.05) lower in BD and supplementation of NSP enzyme and phytase to BD did not increase the feeding cost and was lower than SD. The feed cost per kg live weight gain was lowest (p<0.05) when the BD was supplemented with phytase and NSP enzymes followed by phytase and NSP enzyme supplementation alone.
  N. Rajanna , M. Mahender , D. Thammiraju , D. Nagalakshmi and D. Sreenivasarao
  A study on housing, health management practices of sheep in Telangana region of Andhra Pradesh was carried out on 576 sheep farmers randomly selected from 96 villages in Telangana region of Andhra Pradesh. The study revealed that semi closed type of housing system was adopted by 60.07% shepherds with thatched roof and kutcha floor. Significant association (p<0.01) was observed between zone and housing pattern. Barely 6.60% of farmers replaced soil on the floor of sheep shed once in a year. Majority (82.12%) of farmers provided lamb enclosures while 17.88% did not provide the lamb enclosures. Results further indicated that majority (93.40%) of farmers stored sheep’s manure in open place as a heap. Deworming (100%), spraying (8.16%) and immunization (100%) schedule were followed as preventive health measures. Majority (88.54%) of sheep farmers were threw dead animals into open fields and unused open wells.
 
 
 
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