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Articles by Parwadee Pakdee
Total Records ( 2 ) for Parwadee Pakdee
  Sungchhang Kang , Metha Wanapat , Parwadee Pakdee and Anusorn Cherdthong
  Four Thai-rumen fistulated swamp buffaloes male (Bubalus bubalis), about 3 years old with 360±18 kg liveweight were assigned according to a 2x2 factorial arrangement in a 4x4 Latin square design to receive dietary treatments. The treatments were as follows: T1) level of concentrate at 0.1% BW with Leucaena leucocephala Leaf Meal (LLLM) at 300 g/hd/day; T2) concentrate at 0.2% BW with LLLM at 300 g/hd/day; T3) concentrate at 0.1% BW with heated Leucaena leucocephala Leaf Meal (HLLLM) at 300 g/hd/day and T4) concentrate at 0.2% BW with HLLLM at 300 g/hd/day. The results revealed a significant increase in roughage and total DM intake (p<0.05) by concentrate level at 0.2% BW (T2 and T4) as compared with concentrate level at 0.1% BW (T1 and T3). Digestion coefficient (%) of DM, OM and CP were increased by level of concentrate at 0.2% BW while NDF and ADF were similar among treatments. However, there was no effect of neither energy level nor HLLLM on ruminal pH and temperature (p>0.05). Concentration of ruminal NH3-N was decreased by HLLLM as compared with LLLM (p<0.05) while blood urea-nitrogen was not changed and was in normal range. Total bacterial direct counts were found significantly different (p<0.05) whereas fungi zoospores and protozoal populations were similar among treatments. Nevertheless, viable bacterial counts were found affected by both concentrate level and HLLLM. The treatments with HLLLM were lower than those in LLLM and concentrate level at 0.2% BW were higher than those supplemented at 0.1% (p<0.05). Based on this study, it could be concluded that HLLLM could be used as a protein source in terms of rumen undegradable protein while the combination of HLLLM and concentrate level at 0.2% of BW could enhance the voluntary feed intake, nutrient digestibility, rumen fermentation and ecology in swamp buffalo fed supplementation on 2+2% urea-lime treated rice straw.
  Putthaporn Pumrojana , Suwit Terapuntuwat and Parwadee Pakdee
  We investigated the effect of dietary soybean oil (SBO) vs. beef tallow (TAL) on egg yolk fatty acid composition in laying hens. Four laying hens (Hi-Sex brown chickens), 40 weeks of age, were given experimental diet and recorded data between day 7 and 42. The hens were fed cassava starch-soybean meal with 10% SBO or TAL. Fatty acid composition was determined for (a) soybean oil and beef tallow samples, (b) yolk lipids and (c) 5 yolks per hen on day 32 and 35. Feed intake of SBO treatment trended to be depressed (as low as 95.32 g/h/d) compared with the TAL treatment (105.55 g/h/d), albeit the difference was not significant (p>0.05). SFAs accumulation in egg yolks was between 1,141.84-1,509.42 mg/yolk mass, irrespective of SFA intake (i.e., 2,099.56 mg/h/d on the SBO diet or 8,878.16 mg/h/d on the TAL diet). The main residue of SFAs from the intake (stearic acid; 18:0) results in an increase in oleic acid (18:1n-9) or omega-9 fatty acid accumulation in the egg yolk. The linoleic acid (18:2n-6) in the yolk (i.e., 1,337.28 mg/yolk mass in the SBO treatment vs. 312.39 mg/yolk mass in TAL treatment) is directly related to dietary consumption (p<0.05) (i.e., 6,872.47 mg/h/d in the SBO diet and 1,010.40 mg/h/d in the TAL diet). The addition of TAL in diet strongly affects oleic acid (47.03% of 18:1n:9) accumulation in the yolk, while the addition of SBO to the diet resulted in PUFA (39.08%) accumulation in the yolk (mainly as omega-6 PUFAs).
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