Utilization of mineral and their content in Longisimuss dorsi muscle of lambs maintained on groundnut or mustard meal diets
2002
Tripathi, M.K. | Misra, A.K. | Misra, A.S. | Karim, S.A.(Central Sheep and Wool Research Institute, Avikanagar(India). Division of Animal Nutrition)
Twenty four weaner Avivastra (Russian Merino X Nali)male lambs were divided into two equal groups and fed concentrate mixtures containing groundnut meal (GN) or mustard meal (MM) to meet protien requirements. Ground cenchrus (Cenchrus ciliaris) was fed free choice to meet energy requirement. A digestibility trailo of 7 days was conducted to assess mineral utilisation. Animals were slaughtered after 90 days of experimental feeding to estimate mineral conten of muscles. The content of Na was 1.25, 2.4 and 2.6; K 15.0, 19.9 and 2.6; Mg 3.4, 3.3 and 3.1 g/kg Dm, respectively, in mustard meal, groundnut meal, cenchrus hay. The absorption of K and Mg was higher in MM fed lambs and while Na absorption was higher in Gn fed lambs. The Cu content was similar in groundnut and nustard meal. The Zn content was higher (45.36 mg) in groundnut meal, however, Mn was higher (87.5 mg/kg DM) in mustard meal. The absorption ofCu was higher in GM fed ,lambs than MM fed lambs. The Zn absorption was higher in Gn fed lambs, While MM absorption was higher in MM fed lambs. Muscle contents (g/kg) of Na, K and Mg were 7.1, 5.6 and 1.1 in Gn group and 4.8, 6.6 and 4.7 in MM Group, respectively. The Cu, Zn and Mn contents (mg/kg) were 2.76, 229.95 and 2.89 mg in GN group and 0.44, 189.25 and 2.36 mg in MM groups, respectively. The Na, Cu and Zn contents were higher in muscle of GN compared to that of MM fed lambs. It is concluded that macro (sodium, potassium and magnesium) and micro (copper and manganese) minerals were adequate in diet expect zinc which was higher. Copper absorption was positive and muscle copper content was lower in lambs fed mustard meal containing concentrate mixture, this needs further investigations. Other minerals studied in muscle were adequate for human consumption.
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