Evaluating pasture and soil allowance of manganese for Kajli rams grazing in semi-arid environment

Abstract

The current research on the manganese (Mn) transfer from soil to plant as well as to grazing Kajli rams in the form of sampling periods was carried out under semi-arid environmental conditions. Forage, soil and blood plasma samples were collected during 4 months of the year after a 1-month interval, and Mn concentrations were assessed after wet digestion using an atomic absorption spectrophotometer. Results showed that Mn concentration in soil ranged from 48.28 to 59.44 mg/kg, with incoherent augment and decline across sampling periods, and effect of sampling period on soil Mn was also found to be significant (P < 0.05). The mean levels of Mn in soil appeared higher than the critical value and sufficient for forage crop requirement. The Mn concentration in forage ranged between 24.8 and 37.2 mg/kg, resulting deficient based on the requirement allowance of Mn for livestock grazing animals, therein with almost unchanged forage Mn concentration. The Mn values in blood plasma of rams varied from 0.066 to 0.089 mg/l, with a consistent increase based on sampling period, and the effect of sampling periods on plasma Mn was found to be highly significant (P < 0.05). The Mn levels in ram blood plasma were lesser than the normal level suggesting reasonable need for supplementation. Our study revealed the role of Mn availability in soil and plant species amassing capability on the transport of Mn in the soil-plant-animal system. Results indicated a much higher accumulation rate at the sampling characterized by vegetation dominated by legumes in comparison to grasses, crop residues and mixed pasture and a pronounced seasonal supply of Mn at the four sampling period of grazing land of diverse botanical composition.

Chemical Composition of Saline Sources as Suppliers of Minerals for Ruminants

“…Manganese is an essential element to the animal's metabolism (Pitropvska et al, 2014), in the formation of the organic bone matrix (Zhang et al, 2014) and as a component of several enzymes that are involved in many processes of the organism (Khan et al, 2015). According to NRC (2007) the Mn is not toxic to ruminants even at high levels, but an excess can affect the absorption of Fe.…”

A New Approach to LCA Evaluation of Lamb Meat Production in Two Different Breeding Systems in Northern Italy

“…Favorable effects resulting from pastoral practice (for example, biodiversity) are of fundamental importance to the health of the surrounding ecosystems ( 27 ). In addition, extensive grazing is also a major source of nutrients for the soil, as animal excreta contribute to the improvement of the soil structure by increasing its organic matter content and hereby maintaining an adequate plant cover ( 28 , 29 ). Sheep farming is one of the most important livestock activities in these pastoral areas, as it is well suited to the climate and the type of local fodder (natural pasture) available.…”

Principal Components and Classification Analysis of Manganese Content in Spring of Perennial Grassland Forage from Microecosystems of Banat Hills

“…According with Hidiroglou (1979) and Kisidayova et al (2018), ruminants used only 1% of the Mn from the diet. That's way, for an optimum performance of ruminants, it is recommended minimum 40 mg Mn/kg in the forage (Khan et al, 2015;Hidiroglou, 1979). Below this limit, it is possible to appear imbalance of Mn bioavailability in ruminant feed.…”