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Title: | PERIODIC EVALUATION OF POTASSIUM TRANSFER FROM SOIL AND FORAGE TO SMALL RUMINANTS ON AN EXPERIMENTAL STATION IN SOUTHERN PUNJAB, PAKISTAN |
Authors: | Khan, Zafar Iqbal M.Ashraf Kafeel Ahmad Valeem, Ehsan Elahi |
Issue Date: | 20-Apr-2010 |
Publisher: | Karachi: Pakistan Botanical Society, University of Karachi |
Citation: | Khan, Z. I., Ashraf, M., Ahmad, K., & Valeem, E. E. (2010). Periodic evaluation of potassium transfer from soil and forage to small ruminants on an experimental station in southern Punjab, Pakistan. Pak. J. Bot, 42(2), 1353-1360. |
Abstract: | The premier purpose of the present investigation was to appraise the impact of season and the sampling period, the transport of K from soils and forages to sheep grazing in the semi-arid region of Punjab. The ultimate aim was to enhance animal production by employing a balanced K supplementation, if necessary. The samples of soil, H2O, feed, forage and animal (urine, faeces, milk and blood plasma) were taken eight times fortnightly during two seasons (winter and summer). During summer, K level in soil was found to be adequate for plants, while forage K was above the critical levels for ruminant requirements during both seasons. The plasma K levels were less than required levels in all classes of sheep during both seasons. Milk K concentrations showed no lactation period effect. The lactating sheep had higher faecal K during winter and the non-lactating sheep during summer than that in the male sheep, while urine contained higher K in the lactating as compared to that in the non-lactating sheep during summer and winter. Dietary sources showed no significant effect in enhancing the plasma K status of these animals. Low plasma K may have been due to high excretion through faeces resulting from low absorption and availability through the gastrointestinal tract. Overall, K appraisal based on plasma concentration may be considered inadequate mainly due to unavailability of this mineral from the dietary sources. It is concluded that high bio-available K supplementation is needed for increased animal productivity in this region. |
URI: | http://142.54.178.187:9060/xmlui/handle/123456789/17454 |
ISSN: | 0556-3321 |
Appears in Collections: | Issue No. 2 |
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File | Description | Size | Format | |
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archives2.php?vol=42&iss=2&yea=2010.htm | 133 B | HTML | View/Open |
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