PJB-2023-72
zafar iqbal khan
Abstract
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Trace minerals play important role in the growth of ruminants. The main goal of the research was to evaluate and compare the metal profile of grazing cows at two sites with respect to the requirement of ruminants. The soil, forage and milk of animals were collected from rain fed and groundwater irrigated areas of Chakwal, Pakistan. After wet digestion, an atomic absorption spectrophotometer was used to examine all of the samples. The mean concentrations of Ni and Mo in the soil and forages of the pastures irrigated with ground water were higher when compared with rain fed area. The concentration of nickel in soil was 16.26-25.45, 0.763-8.82mg/kg in forage and 1.07-1.21 mg/l in milk, although the Mo levels were 2.128-2.95, 0.18-1.91 mg/kg, and 0.1-0.27 mg/l for soil, forages and milk, respectively. The soil had optimum concentrations of Ni and Mo for active plant growth. The Ni and Mo concentrations in forage samples were below the ruminant requirements. Soil-forage and Forage-milk correlations for Ni were observed to be positively non significant for both studied regions. The site 1 soil-forage correlation for molybdenum was found to be negatively non significant, but soil-forage correlation for site 2 was negatively significant. The correlation for Mo for forage-milk was negatively non significant at site 1 and positively non-significant at site 2. The mineral nutrition of the animals in this region was found to be almost adequate but marginally deficient.
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