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RISS 인기검색어
- 검색키워드
- 저자 : Gomez-Rosales, S. (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Addition of a Worm Leachate as Source of Humic Substances in the Drinking Water of Broiler Chickens
Gomez-Rosales, S.,Angeles, M. De L. Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.2
The objective of this research was to evaluate the growth performance, the apparent ileal digestibility of nitrogen and energy, the retention of nutrients and the apparent metabolizable energy corrected to zero nitrogen retention (AMEn) in broiler chickens supplemented with increasing doses of a worm leachate (WL) as a source of humic substances (HS) in the drinking water. In Exp. 1, 140 male broilers were penned individually and assigned to four WL levels (0%, 10%, 20%, and 30%) mixed in the drinking water from 21 to 49 days of age. Water was offered in plastic bottles tied to the cage. In Exp. 2, 600 male broilers from 21 to 49 days of age housed in floor pens were assigned to three levels of WL (0%, 10%, and 20%) mixed in the drinking water. The WL was mixed with tap water in plastic containers connected by plastic tubing to bell drinkers. The results of both experiments were subjected to analysis of variance and polynomial contrasts. In Exp. 1, the daily water consumption was similar among treatments but the consumption of humic, fulvic, and total humic acids increased linearly (p<0.01) as the WL increased in the drinking water. The feed conversion (p<0.01) and the ileal digestibility of energy, the excretion of dry matter and energy, the retention of dry matter, ash and nitrogen and the AMEn showed quadratic responses (p<0.05) relative to the WL levels in drinking water. In Exp. 2, the increasing level of WL in the drinking water had quadratic effects on the final body weight, daily weight gain and feed conversion ratio (p<0.05). The addition of WL as a source of HS in the drinking water had beneficial effects on the growth performance, ileal digestibility of energy, the retention of nutrients as well on the AMEn in broiler chickens; the best results were observed when the WL was mixed at levels of 20% to 30% in the drinking water.
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Addition of a Worm Leachate as Source of Humic Substances in the Drinking Water of Broiler Chickens
S. Gomez-Rosales,M.de L. Angeles 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.2
The objective of this research was to evaluate the growth performance, the apparent ileal digestibility of nitrogen and energy, the retention of nutrients and the apparent metabolizable energy corrected to zero nitrogen retention (AMEn) in broiler chickens supplemented with increasing doses of a worm leachate (WL) as a source of humic substances (HS) in the drinking water. In Exp. 1, 140 male broilers were penned individually and assigned to four WL levels (0%, 10%, 20%, and 30%) mixed in the drinking water from 21 to 49 days of age. Water was offered in plastic bottles tied to the cage. In Exp. 2, 600 male broilers from 21 to 49 days of age housed in floor pens were assigned to three levels of WL (0%, 10%, and 20%) mixed in the drinking water. The WL was mixed with tap water in plastic containers connected by plastic tubing to bell drinkers. The results of both experiments were subjected to analysis of variance and polynomial contrasts. In Exp. 1, the daily water consumption was similar among treatments but the consumption of humic, fulvic, and total humic acids increased linearly (p<0.01) as the WL increased in the drinking water. The feed conversion (p<0.01) and the ileal digestibility of energy, the excretion of dry matter and energy, the retention of dry matter, ash and nitrogen and the AMEn showed quadratic responses (p<0.05) relative to the WL levels in drinking water. In Exp. 2, the increasing level of WL in the drinking water had quadratic effects on the final body weight, daily weight gain and feed conversion ratio (p<0.05). The addition of WL as a source of HS in the drinking water had beneficial effects on the growth performance, ileal digestibility of energy, the retention of nutrients as well on the AMEn in broiler chickens; the best results were observed when the WL was mixed at levels of 20% to 30% in the drinking water.
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Remediation of contaminated marine sediment using electrokinetic–Fenton technology
M. Pazos,M.A. Sanroman,O. Iglesias,J. Gomez,E. Rosales 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
In this work dredge marine sediments contaminated by petroleum hydrocarbon (TPH) and metals, such as Zn, Pb, Cu and Hg, were treated by electrokinetic treatment. EDTA and Tween 80 were used as processing fluid to enhance the solubility of metals and TPH, respectively. On the other hand, a combination of a Fenton’s reagent and EDTA was evaluated to promote the in situ degradation of TPH and to solubilize the metals. After 30 days of treatment, the best results were obtained by EK–Fenton–EDTA process with a removal of about 90% for TPH, 57.3% of Zn, 59.8% of Pb, 59.4% of Cu and 54.5% of Hg.
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Synthesis of highly carboxylated latex particles using a power feed process
R. Santilla´n,M. Corea,E. Nieves,C.P. Alejandre,C. Gomez-Yanez,J.M. del Rı´o,H. Dorantes-Rosales,M.E. Navarro-Clemente 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
Two series of highly carboxylated latex particles were synthesized via a power feed process. The concentration carboxylic groups were varied inside the particles and a gradient in the concentration from the interior to the surface was created. The power feed process, proposed by Bassett et al., was used for the synthesis of the functionalized materials and a mathematical model was proposed for this process and theoretical predictions for the concentration of carboxylic groups inside the particles were corroborated with experimental results. A methodology based on thermodynamic formalism is proposed to study the response of these materials to ion exchange.
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