• Title/Summary/Keyword: Swine breeding

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A Study on the Sulfametazine residues in Swine Tissues (일부지역 돼지장기 및 근육내 잔류설파메타진에 대한 조사연구)

  • 김영철;이용욱
    • Journal of Food Hygiene and Safety
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    • v.5 no.4
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    • pp.197-204
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    • 1990
  • This study was carried out to determine the sulfametazine residues in swine tissues. For this experiment, 22 samples of porks were collected at meat markets in Seoul, 21 samples of swine muscles for export were collected at slaughterhouses in Gyunggi areas, and 18 samples of swine livers, kidneys, and muscles were collected from 6 swine at slaugterhouse in Seoul from the end of August to the early of October and were analyzed by High Performance Liquid Chromatography (HPLC). the results obtained were summarized as follows. 1. The sulfametazine residues were liver > kidney > muscle, and among liver, kidney and muscle were very significantly different(p<0.005). 2. The sulfametazine residue in liver was very significantly higher than that in muscle (p<0.005), the sulfametazine residue in kidney was significantly higher than that in muscle (p<0.005), but, the sulfametazine residue in liver was not significantly higher than that in kidney(p<0.05). 3. the sulfametazine residues in swine muscles for export wer exhibited a tendency to lower in small breeding size farms. 4. the sulfametazine fesidue in one of 22 samples of porks for domestic consumption was exceeded 0.1 ppm.

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Improved Reproductive Efficiency in Gilts by Intrauterine Infusion of Killed Boar Semen before Breeding

  • Capitan, Severino S.;Penalba, F.F.;Geromo, F.B.;Dalumpienes, J.M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.6
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    • pp.789-792
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    • 2006
  • Two separate trials were conducted to determine the effects of uterine priming prior to first breeding and quantify any changes in the reproductive efficiency of gilts. In trial I twelve (12) gilts were randomly assigned to 3 treatments:T1:infusion of distilled water (control), T2: single infusion of killed semen (KS1), and T3: double infusion of killed semen (KS2). Each treatment had 4 breeding gilts which were bred by natural insemination (NI). In trial II, another set of 12 breeding gilts were randomly allotted to the same treatments and were subsequently bred by artificial insemination (AI). Infusions, through the use of AI catheters, were done during the $2^{nd}$ estrous cycle for T1 and T2, whereas infusions for T3 were made during the $1^{st}$ and $2^{nd}$ cycles. Regular breeding was subsequently made during the $3^{rd}$ estrous cycle. All gilts that returned to cycle were rebred within the 30-day period. In trial I (natural breeding), total piglets born was higher (p<0.05) in T2 (12.75 piglets) and T3 (11.75 piglets) than in the control (10.5 piglets). T3 obtained the highest (p<0.05) litter size (10.25 piglets) and heaviest litter weight (74.12 kg) at 28 days weaning, followed by T2 (9.80 piglets and 65.0 kg, respectively). The control yielded the lowest (p<0.05) litter size (7.50) and the lightest litter weight (47.00 kg) at weaning. For Trial II gilts (artificially inseminated), T3 gave higher (p<0.05) litter size born alive (10.88 piglets), total piglets born (11.72 piglets) and live litter weight at birth (15.30 kg) than those of T2 and the control. These results indicate that prebreeding intrauterine infusion of killed boar semen, either single or double, improved the reproductive performance of gilts.

Study on the Swine Farming Facilities by Survey for the Development of the Optimum Production System Models (최적화 생산시스템 모델 개발을 위한 양돈시설의 조사 연구)

  • 장동일;이봉덕;조한근;장홍희
    • Journal of Animal Environmental Science
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    • v.2 no.1
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    • pp.1-11
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    • 1996
  • This study was conducted to analyze the present status and the levels of mechanization and automation for raising, feeding, water supply, propagation, health management, ventilation and heat control, data analysis, and etc, and to establish the guide of the future study on development of the optimum production system models of swine facility from the results of this analysis. The scheme of the future study on the development of the optimum production system model of swine facility was established as follows : 1. A Korean and environmental control type slatted windowless swine housing model would be developed according to the following basis : \circled1 Boars, gilts and sows, delivery sows should be raised individually and piglets, growing pigs, and finishing pigs should be raised in group. \circled2 The arrangement of furrowing house were two rows of furrowing crates facing the center aisle. 2. The environmental control system and waste management system that are suitable to Korean and environmental control type slatted windowless swine housing model would be developed. 3. An electronic identification device would be developed. 4. The automatic individual wet feeding system by electronic identification device and computers would be developed. 5. The individual management system would be developed, which could manage individually the breeding pigs by the electronic identification device. 6. An expert system would be developed, which could manage the health and data base of pigs.

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Serological Diagnosis of Bordetellosis: Application of Rapid Plate Agglutination Technique for the Detection of Carrier in Swine (Bordetella 감염증(感染症)의 혈청학적진단(血淸學的診斷): 특히 보균돈검색(保菌豚檢索)을 위한 급속평판응집반응(急速平板凝集反應)의 실용화(實用化))

  • Kang, Byong Kyu
    • Korean Journal of Veterinary Research
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    • v.18 no.2
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    • pp.61-67
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    • 1978
  • The detection of Bordetella bronchiseptica which is supposed to be an agent of the infectious atrophic rhinitis of swine, is likely to receive more attention in the future as the pork industry comes to realize that eradication of this infection from breeding herds is a practical possibility. Experiments described here were carried out to establish the rapid plate agglutination test for the detection of the infectious atrophic rhinitis of swine in the field using the criteria of antigen preparation, effects on the antigenecity after storing of the antigen and reaction appearing time. Also, the agglutinabilities between the plate and tube method were compared and the degree of pathological lesions were recorded in relation to tube agglutination titers. Obtained results were as follows: 1. No differences were noted in the agglutinabilities on the plate agglutination test between the treatments in antigen preparation-formolized, merthiolate-killed and living organism. 2. The agglutinability of the antigens did not show any significant changes until 10 weeks of storage at 4 C; however, after 10 weeks of storage, non-specific reaction was observed with the HPCD control sera. 3. The results of the plate and tube agglutination tests were not comparable but the effective use of the plate method in Bordetella bronchiseptica eradication programs in pigs especially in the sow is stressed as a screening test.

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Characteristics of Temperature Distribution of Pen for Exhaust Fan of Ventilation System (돈사용 환기팬을 위한 돈사 내 온도 분포 특성)

  • Kim, Hyeon-Tae;Kim, Woong
    • Journal of Animal Environmental Science
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    • v.20 no.4
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    • pp.155-160
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    • 2014
  • This study was researched for use by data for the improvement of ventilation system of optimum environmental control systems. The ventilation system for windowless swine housing was installed negative pressure system that circular pipe duct for inlet was installed on the ceiling and axial flow fan for exhaust was installed on the sidewall. The temperatures in the pen was measured using infrared thermography camera and thermocouple with data-logger. The temperature measurement points was selected by infrared thermography camera is alley (G), inlet (A), front-upper (B), front-lower (C), rear-upper (D), rear-lower (E), forward fan (F). The temperature measured at those selected points for temperature distribution was $28^{\circ}C$ that was maintained setting temperature in suitably. The temperature deviations of F point and A~E points in windowless swine housing was less then average $0.5^{\circ}C$. The result of air velocity of measured points was suitable to the breeding of pigs.

Estimation of heritabilities and additive genetic correlations for reproduction traits in swine: insights for tropical commercial production systems using multiple trait animal models

  • Udomsak Noppibool;Thanathip Suwanasopee;Mauricio A. Elzo;Skorn Koonawootrittriron
    • Animal Bioscience
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    • v.36 no.12
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    • pp.1785-1795
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    • 2023
  • Objective: This study was to estimate heritabilities, additive genetic correlations, and phenotypic correlations between number of piglets born alive (NBA), litter birth weight (LTBW), number of piglets weaned (NPW) and litter weaning weight (LTWW) in different parities of Landrace (L), Yorkshire (Y), Landrace×Yorkshire (LY), and Yorkshire×Landrace (YL) sows in a commercial swine operation in Northern Thailand. Methods: Two models were utilized, a single trait repeatability model (RM) and a multiple trait animal model (MTM). The RM assumed reproductive records from different parities to be repeated values of the same trait, whereas the MTM assumed these records to be different traits. The two models accounted for the fixed effects of farrowing year-season, genetic group of the sow, heterosis, and age at first farrowing, and the random effects of sow, boar, and residual. Results: Heritability estimates from RM were 0.02±0.01 for NBA, 0.10±0.01 for LTBW, 0.04±0.01 for NPW, and 0.11±0.01 for LTWW. Heritability estimates from MTM fluctuated across parities, ranging from 0.04±0.01 in parity 2 to 0.09±0.02 in parity 4 for NBA, 0.07±0.02 in parity 2 to 0.16±0.02 in parity 3 for LTBW, 0.04±0.02 in parity 4 to 0.08±0.01 in parity 1 for NPW, and 0.16±0.02 in parity 1 to 0.20±0.02 in parity 2 for LTWW. Additive genetic correlation estimates from MTM were also variable, ranging from 0.29±0.24 between NBA in parity 1 and NBA in parity 2 to 0.99±0.05 between LTWW in parity 3 and LTWW in parity 4. Conclusion: The findings of this study highlight the advantage of using MTM for the genetic improvement of reproductive traits in swine and contribute to the development of sustainable swine breeding programs in Thailand.

Application of pure organic phyto-formulations to optimize performance results in the conventional European animal breeding and production (동물의 번식 효율 증진을 위한 한약제의 활용)

  • Gupte, Ss.;Dickie, Mb;Bacowsky, H. Dvm.
    • Proceedings of the Korean Society of Veterinary Pathology Conference
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    • 2002.11a
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    • pp.5-6
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    • 2002
  • In a comprehensive summary use and supplementation of some well defined natural herbal formulations in the European swine breeding and fattening is documented. Along with this data also the quality assurance, hygenic as well as the standards of efficacy of the formulations are presented. Series of experimental and development work over the last several years with universities, research institutes, veterinarians and feed industry proved that the application of such phylo-components (feed supplementation) result in to optimizing swine breeding practices. On the basis of 4 specific formulations tested and used in the European veterinary field most of the common problems of pig breeding and rearing can be successfully handled. Precisely, problems of fertility, respiration, diarrhea and stress; which are directly related to imerse losses in production, with poor quality of piglets associated with immune suppressions. Besides curing common symptoms, one of the most important aspect is of improvement in the self defence mechanism which results ultimately in to increased immunity, vitality and health of the animals; of course, thereby reducing the mortality which is the most economical problem observed in the animal health. Moreover, data presented here reflects on the fact that the use of such high quality alternative formulations successfully replace conventionally used antibiotics or hormonal therapies. They also work synergestically of as complementary in vaccination program or act as growth promoting agents on natural basis.

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Bioenergy and Material Production Potential by Life Cycle Assessment in Swine Waste Biomass (전과정 평가에 의한 양돈 바이오매스의 물질 및 에너지 자원화 잠재량 연구)

  • Kim, Seung-Hwan;Kim, Chang-Hyun;Yoon, Young-Man
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.6
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    • pp.1245-1251
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    • 2011
  • As a result of the growing livestock industry, varieties of organic solid and waste biomass are be generated in swine breeding and slaughtering stages. Anaerobic digestion is a promising alternative for the treatment of livestock waste biomass, as well as for the material recovery and energy production. Objectives of this study were to analyze the biochemical methane potential of swine waste biomasses that were generated from swine pen and slaughterhouse and to investigate the material recovery and methane yield per head. As pig waste biomass, swine slurry, blood, intestine residue, and digestive tract content were collected for investigation from pig farmhouse and slaughterhouse. The $B_{th}$ (Theoretical methane potential) and $B_0$ (Biochemical methane potential) of swine slurry generating in swine breeding stage were 0.525 and $0.360Nm^3\;kg^{-1}-VS_{added}$, the ratio of degradation ($B_0/B_{th}$) was 68.6%. $B_{th}$ of blood, intestine residue, and digestive tract content were 0.539, 0.664, and $0.517Nm^3\;kg^{-1}-VS_{added}$, and $B_0$ were 0.405, 0.213, and $0.240Nm^3\;kg^{-1}-VS_{added}$, respectively. And the ratio of degradation showed 75.1, 32.1, and 46.4% in blood, intestine residue, and digestive tract content. Material yield of swine waste biomass was calculated as TS 73.79, VS 46.75, TN 5.58, $P_2O_5$ 1.94, and $K_2O$ $2.91kg\;head^{-1}$. And methane yield was $16.58Nm^3\;head^{-1}$. In the aspect that slaughterhouse is a large point source of waste biomass, while swine farmhouse is non-point source, the feasibility of an anaerobic digestion using the slaughtering waste biomass need to be assessed in the economical aspect between the waste treatment cost and the profitable effect by methane production.

Effects of Swine Manure on The Production of Forage, Soil Properties, and the Chemical Characteristics of Leaching Water in Mixed Grassland (영년초지에서 돈분뇨의 시용형태가 목초생산, 토양성분 및 용탈수의 성분에 미치는 영향)

  • Choi, Ki-Chun;Yook, Wan-Bang;Yoon, Chang
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.28 no.4
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    • pp.331-340
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    • 2008
  • This study was conducted to investigate the effects of the type of swine manure on herbage productivity, the properties of soil and environmental pollution in mixed grassland. The field experiment was carried out on Livestock Breeding Station, Chonbuk in Korea from Nov. 2002 to Nov. 2005. Experimental plots were consisted of the types of swine manure, such as additional swine manure fermented with sawdust (SMFWS)+urea 50% and swine slurry (SS)+urea 50%. And then, chemical fertilizer (Urea) is used as control. DM yields of herbage were not different between chemical fertilizer and the type of swine manure. Feed values (CP, NDF, ADF, TDN) were not different between chemical fertilizer and swine manure treatments. After finishing with the experiment, Organic matter contents in soil increased. Organic matter, available phosphorous and Ca contents in swine manure treatment were higher than those of chemical fertilizer (p<0.05). $NO_3$-N and $NH_4$-N concentrations in leaching water in the mixed grassland was hardly influenced by application of swine manure and urea, whereas $NO_3$-N and $NO_3$-N levels in leaching water were less than 5 ppm.