EVALUATION OF DENSIFIED COMPLETE FEED BLOCKS IN CROSSBRED CATTLE

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dc.contributor.advisorSajith Purushothaman
dc.contributor.authorSUNIL GOWDA H.S.
dc.date.accessioned2020-09-23T08:25:09Z
dc.date.available2020-09-23T08:25:09Z
dc.date.issued2019
dc.description.abstractA feeding trial was conducted for a period of 90 days to assess the effect of feeding densified complete feed blocks (DCFB) in crossbred cattle. Eighteen healthy crossbred heifer calves of eight to twelve months of age were selected from University Livestock Farm and Fodder Research and Development Scheme (ULF&FRDS), Mannuthy. They were divided into three groups of six animals each as uniformly as possible with regard to age, sex and body weight and were randomly allotted to one of the three dietary treatments, T1 (Straw based DCFB), T2 (DCFB incorporating 20 per cent Dhanvantharam oil residue) and T3 (DCFB incorporating 20 per cent tapioca starch waste). The experimental design used was RBD. All the experimental animals were fed as per standard specifications (ICAR, 2013). The rations were made isonitrogenous and isocaloric. Data on fortnightly body weight, average daily gain, daily dry matter (DM) intake, feed efficiency, digestibility, haematological and biochemical parameters like haemoglobin, total protein, serum calcium, serum phosphorus, serum glucose, rumen fermentation parameters like rumen pH, volatile fatty acids and rumen ammonia nitrogen and cost effectiveness of feeding DCFB were assessed. The average daily gain of heifer calves maintained on dietary treatments T1, T2 and T3 were 0.68 ± 0.03, 0.73 ± 0.08 and 0.66 ± 0.06 kg, respectively and the total weight gain was 61.17 ± 3.14, 65.67 ± 6.78 and 59.30 ± 5.25 kg, respectively and there was no significant difference (p>0.05) between the groups. Average daily DMI of heifer calves maintained on dietary treatments T1, T2 and T3 were 4.65 ± 0.25, 4.72 ± 0.46 and 4.56 ± 0.58, respectively and they were similar among the groups. The per cent digestibility of nutrients in DCFB fed to three treatments T1, T2 and T3 were 55.39 ± 2.39, 56.28 ± 2.71 and 57.93 ± 2.12 for DM, 58.03 ± 1.10, 58.37 ± 2.40 and 57.97 ± 2.18 for CP, 74.26 ± 1.59, 77.42 ± 1.41 and 73.13 ± 2.08 for EE, 50.88 ± 2.39, 52.17 ± 2.88 and 56.87 ± 1.69 for CF and 59.98 ± 2.76, 58.20 ± 3.01 and 62.20 ± 2.52 for NFE, respectively and there was no significant difference (p>0.05) among the groups. The mean FCR of experimental heifer calves maintained on dietary treatments T1, T2 and T3 were 7.03 ± 0.47, 6.73 ± 0.41 and 6.97 ± 0.38, respectively. The haematological and biochemical parameters like haemoglobin, total protein, serum calcium, albumin and globulin did not show any significant difference among the treatments except for serum phosphorus and serum glucose but the values are within the normal physiological range as reported for the species. Rumen fermentation parameters like volatile fatty acids and rumen ammonia nitrogen did not show any significant difference among the treatments. But the rumen pH was significantly higher in T1 and T3 groups compared to T2 at end of feeding trial. The feed cost per kg of weight gain of heifer calves maintained on dietary treatments T1, T2 and T3 was Rs.134.87, 103.80 and 127.25, respectively and the heifer calves maintained on T2 recorded a least feed cost per kg of body weight gain as compared to heifer calves fed on either T1 or T3 diet. From the results of present study it can be concluded that complete feed block containing unconventional feed ingredients like dhanvantharam oil residue and tapioca starch waste can be included at 20 per cent level economically without any adverse effect on growth and health status of crossbred heifer calves. Cost effective DCFB can be prepared using dhanwanthram oil residue and tapioca starch waste in place of conventional feed ingredients.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810151837
dc.keywordsEVALUATION DENSIFIED COMPLETE FEED BLOCKS CROSSBRED CATTLEen_US
dc.language.isoEnglishen_US
dc.pages82en_US
dc.publisherCollege of Veterinary and animal Science,Mannuthyen_US
dc.research.problemEVALUATION OF DENSIFIED COMPLETE FEED BLOCKS IN CROSSBRED CATTLEen_US
dc.subAnimal Nutritionen_US
dc.themeEVALUATION OF DENSIFIED COMPLETE FEED BLOCKS IN CROSSBRED CATTLEen_US
dc.these.typeM.V.Sc.en_US
dc.titleEVALUATION OF DENSIFIED COMPLETE FEED BLOCKS IN CROSSBRED CATTLEen_US
dc.typeThesisen_US
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