• Title/Summary/Keyword: Swine growth

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Effects of Antibiotics, Copper Sulfate and Probiotics Supplementation on Performance and Ammonia Emission from Slurry in Growing Pigs (사료에 대한 항생제, 황산동 및 생균제 첨가가 육성돈의 생산성 및 슬러리의 암모니아 발생에 미치는 영향)

  • Han, Y.K.;Shin, H.T.
    • Journal of Animal Science and Technology
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    • v.47 no.4
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    • pp.537-546
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    • 2005
  • An experiment was conducted to determine the effect of supplementation of chlortetracycline (CTC,110ppm), copper sulfate(Cu, 125ppm) and two levels of probiotics(Prob I, 0.04%, Prob II, 0.1%), Bacillus licheniformis and Bacillus subtilis) on growth performance, nutrient digestibility and manure characteristics in growing pigs. A total of 50 pigs that averaged 20.78$\pm$0.35kg BW and 50$\pm$2.3d age were allocated in a randomized block design with two pigs per pen and 5 pens per treatment. Pigs and feeders were weighed 10-days interval for the 40-d trials to determine ADG, ADFI and feed:gain ratio(F:G). Average daily gain, feed intake, feed/gain and nutrient digestibility were not improved(P>0.10) by the supplementation of CTC, Cu and two levels of probiotics. There were significant(P<0.05) Cu effects on digestibility of crude protein, and probiotics effects on digestibilities on organic matter, crude protein and energy between first 20 days and subsequent 20 days. Fecal concentrations of copper were highly increased(P<0.001) by the copper supplementation. Total bacteria and coliform counts were not altered by the supplementation of CTC, Cu and two levels of probiotics. Ammonia emission from slurry, measured during first 3 weeks, was reduced (P<0.001) in pigs fed diet with 125 ppm copper from copper sulfate. Results indicate that CTC, Cu and Probiotics supplementation had a little or not positive effect on grower pig performance under sound environmental conditions. Further studies may be warranted to investigate the effects of dietary copper-either reduced or in combination with dietary ammonia control agents-on the ammonia emission characteristics of swine manure.

Effects of Dietary Mugwort (Artemisia iwayomogi Kitamura) Powder Supplementation on Growing Performance in Pig (인진쑥(Artemisia iwayomogi Kitamura) 분말 급여가 돼지 생산성에 미치는 영향)

  • Ha, Im-Jung;Jeong, Mi-Ae;Kim, Byung-Uk;Kim, Jong-Duk;Ryu, Yeon-Sun;Kim, Sam-Woong;Lee, Chul-Young;Jung, Ki-Hwa;Cho, Kwang-Keun
    • Journal of Life Science
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    • v.21 no.1
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    • pp.110-118
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    • 2011
  • This study was conducted to investigate growth performance in weanling and growing pigs supplemented with mugwort powder as an antibiotic replacement. To examine the effects of antibiotic replacement, 0 (control, with and without antibiotics), 1, and 1.5% mugwort powder was supplemented into the basal diet. Pigs raised with a diet of 1.0% mugwort powder had improved average daily gain and feed conversion rate during 23~37 d feeding. During 40~59 and 63~97 d feeding periods, there were no differences between average daily gain in pigs fed no antibiotics and those given a 1% mugwort powder diet, whereas feed conversion rate of pigs given a 1.5% mugwort powder diet and average daily gain of pigs fed no antibiotics were lower than those of any other diet group. In conclusion, this study suggests that the 1.0% supplementation of mugwort in place of antibiotics is an invaluable feed additive as a physiologically activated material.

Comparison of the Growth Performance of 12 Crossbred Korean Native Chickens and Commercial Layer from Hatch to 16 Weeks (12개의 토종닭 교배조합과 실용 산란계의 육성기 성장능력 비교)

  • Eunsoo Seo;Myunghwan Yu;Elijah Ogola Oketch;Shan Randima Nawarathne;Nuwan Chamara Chathuranga;Bernadette Gerpacio Sta. Cruz;Venuste Maniraguha;Jun Seon Hong;Doo Ho Lee;Minjun Kim;Jung Min Heo
    • Korean Journal of Poultry Science
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    • v.50 no.4
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    • pp.303-310
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    • 2023
  • The current study was conducted to compare the effect of crossbred on the body weight and laying performance of Korean native chicken from hatch to week 40. A total of 873 one-day-old chicks were divided into twelve crossbreds (i.e., CFCK, CFYC, CFYD, CKCF, CKYC, CKYD, YCYD, YCCF, YCCK, YDCF, YDCK, and YDYC) and commercial layer (Hy-Line Brown) were obtained as a counterpart in the study. All the birds are raised in battery cages (76 × 61 × 46 cm3) and then raised until 14 weeks and subsequently moved to layer battery cages (60 × 25 × 45 cm3) and raised until 16 weeks. The body weight and viability were measured biweekly from hatching to week 16. The week of 16, body weight range was about 1,010.24 to 1,411.77 g. The body weight of specific crossbreeds (i.e., CKCF, YCYD, and YDYC) was found to be comparable to that of Hy-Line Brown). The viability hatch to week 14 range was about 55 to 100% and however week 14 to 16 range was 80 to 100%. The crossbred (i.e., CKCF) recorded superior (P<0.05) viability throughout the whole experiment period, even compared with Hy-Line Brown (100% vs 96%). Our results are indicating that crossbreds Korean native chicken including CKCF, and YDYC has the potential to enhance key features of laying hens during the growing phase like optimal body weight and higher viability.