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Articles by Safdar ALI
Total Records ( 4 ) for Safdar ALI
  Safdar Ali , Asia Munir , Rifat Hayat and Shahzada Sohail Ijaz
  A field study was designed primarily, to observe the effect of phosphorous and potassium application in terms of improving water use efficiency and nitrogen fixation capacity of mash bean and secondly, on the nitrate content of soil. The experiment was carried out during summer 2003 on a silty loam soil (Typic Ustochrepts) at Research Farm of University of Arid Agriculture, Rawalpindi with phosphorous and potassium fertilization at recommended rates separately as well as in combination. The highest water use efficiency (1.04 kg mm-1 ha-1, 8% above control) and total fixed nitrogen (57.24 kg ha-1, 41.28% over control) was observed with treatment P + K fertilization at the rate of 80 and 40 kg ha-1, respectively. NO3-N content of soil were significantly higher at 60-90 cm depth, highest (24.34 kg ha-1) being with phosphorous application at the rate of 80 kg ha-1.
  Adnan Umair , Safdar Ali , Muhammad Javed Tareen , Ijaz Ali and Muhammad Naveed Tareen
  In seed priming, seeds are partially hydrated to a point where germination processes commence but radical emergence does not occur. A lab experiment was conducted for assessment of antioxidant enzymes activity as affected by different seed priming treatments. The seeds were invigorated by traditional soaking (hydropriming), osmo-conditioning (soaking of seeds in aerated, low-water-potential solutions) using, potassium di-hydrogen phosphate, Mannitol, Polyethylene glycol, sodium molybdate dihydrate and hormonal priming by using salicylic acid. The ranges of osmotic potential for all the priming treatments were -0.5 to -1.2 M Pa. All the invigoration treatments significantly affected the activities of anti-oxidants i.e., Superoxide Dismutase (SOD), Peroxidase (POD), Polyphenoloxidase (PPO) and Catalase (CAT) activity. Osmopriming using P @ 0.60% applied in the form of KH2PO4 significantly improved the SOD and CAT activity while T10 showed improvement in PPO. All the seed priming treatments also enhanced the seedlings vigour in terms of germination and vigour index.
  Muhammad I. MUSTAFA , John P. CHADWICK , Pervez AKHTAR , Safdar ALI , Muhammad LATEEF and Javed I. SULTAN
  In the present study 48 Suffolk x Mule (S x M) and 48 Scottish Blackface (SBF) wether lambs were used in a 2 breeds x 2 diets x 4 replications factorial experiment with 6 lambs per pen. Lambs were offered either a concentrate (CONC) finishing diet (DM: 876 g kg-1, estimated ME: 10.9 MJ kg-1 of DM, estimated DUP: 32.4 g kg{-1} of DM) ad libitum, together with 100 g hay head-1 day-1, or silage (SIL) offered ad libitum (D value: 67.2), together with up to 450 g head-1day-1of a concentrate supplement (DM: 888 g kg-1, estimated ME: 10.9 MJ kg-1 of DM, estimated DUP: 63.9 g kg-1 of DM). Lambs were slaughtered at estimated MLC fat class 2 to 3L. Both breed and diet had a significant effect on daily live weight gain (DLWG) (S x M: 282 vs. SBF: 210 g; CONC: 383 vs. SIL: 109 g) and the food conversion ratio (FCR) was significantly affected by diet (CONC: 5.3 vs. SIL: 7.7). Breed x diet interactions were significant for both DLWG and FCR. Conformation score was better in the S x M lambs than in the SBF lambs (3.2 vs. 2.6; scale E = 5, P = 1), whereas diet influenced the estimated subcutaneous fat proportion (CONC: 121.5 g kg-1vs. SIL: 113.2 g kg-1).
  Pervez AKHTAR , Safdar ALI , Asghar HUSSAIN , Muhammad A. MIRZA , Muhammad I. MUSTAFA and Javed I. SULTAN
  Data obtained from 5260 birth records of 1179 Hissardale sheep maintained at the Livestock Experiment Station, Jahangirabad, in the district of Khanewal during 1978-1995 were analyzed. The objective was to evaluate the performance and to estimate the heritability of Hissardale sheep in Pakistan. Mean 180-day, 270-day, and yearling weights were 23.5 ± 3.31 kg, 25.7 ± 3.49 kg, and 30.7 ± 3.83 kg, respectively. Mean greasy fleece weight was 3.6 ± 0.57 kg. Post-weaning mean daily weight gain was 45 ± 0.02 g. Mean weight at first service was 38.9 ± 4.9 kg. The number of services per conception averaged 1.23 ± 0.40. The sire model using PROC MIXED in SAS was used to estimate heritability. Heritability estimates for 180-day, 270-day, and yearling weights were 0.09 ± 0.03, 0.17 ± 0.04, and 0.15 ± 0.04, respectively. The heritability estimate of post-weaning average daily gain was low (0.06 ± 0.03). The heritability for greasy fleece weight was also very low (0.02 ± 0.02). Low estimates of heritability indicated the presence of less additive genetic variance and large environmental variance. Hence, improvement in the traits through selection may be limited.
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