• Journal of Animal Environmental Science
• /
• v.9 no.2
• /
• pp.113-122
• /
• 2003

This on­farm study was conducted to evaluate the effect of feeding deepstacked broiler excreta­saw dust­rice hulls(DBSR) pellets on feed intake, production and economy of growing Hanwoo steers and Holstein bulls. Formulated mix and rice straw were replaced at 16％ and 48％ levels for growing Hanwoo steers(6 wk of feeding period) and at 4％ and 18％ levels for Holstein bulls(12 wk) with DBSR pellets. Control and treated diets were formulated to be isoenergetic and DBSR pellets were fed ad libitum. Palatability of DBSR pellets turned out to be favorable. Compared with the control group, feeding DBSR pellets did not affect body weight gain, average daily gain and feed efficiency(P＞0.05). Feed cost per gain was reduced by 18.5％ for Hanwoo steers and 3.5％ for Holstein bulls. Feeding DBSR pellets to Holstein bulls did not affect carcass weight and grades of meat yield and quality. These results indicate that deepstacked cage broiler excreta mixture may be effectively used as a feed ingredient for growing ruminants.

• Proceedings of the Korea Society of Poultry Science Conference
• /
• 2001.11a
• /
• pp.80-82
• /
• 2001

This experiment was conducted to investigate the effects of Bamboo Vinegar Liquid(BVL) on performance and meat quality of broiler ducks for 5 weeks. One hundred broiler ducks were divided into 4 groups with S replicates per treatment. Dietary levels of food waste 0%, 1%, 2% and 4% were included in experimental diets. The growth performance and carcass weight of broiler duck fed BVL supplement diets were not significantly different(P>0.05) from the control birds. The lipid content was decreased(P<0.n) by addition of BVL 2% and 4%, whereas the protein was increased(P<0.05). The cholesterol content and TBA in breast meat were significantly(P<0.05) decreased by addition of BVL. palmitic acid of fatty acid composition were decreased by addition BVL 2% and 4% whereas linoleic acid was increased by addition of BVI. 2% and 4%. The odor, appearance and taste of sensory evaluation were improved by addition BVL 1% and 2%. The results of this study indicate that dietary supplemental BVL 1% and 2% may improve the meat quality of broiler ducks.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.20 no.12
• /
• pp.2348-2354
• /
• 2016

In recent days, IoT (Internet of Things) technology has been widely used in the field of agriculture, which enables the collection of environmental data and biometric data into the database. The availability of big data on agriculture results in the increase of the machine learning based analysis. Through the analysis, it is possible to forecast agricultural production and the diseases of livestock, thus helping the efficient decision making in the management of smart farm. Herein, we use the environmental and biometric data of Smart Pig farm to derive the accurate relationship model between the environmental information and the daily weight increase of swine and verify the accuracy of the derived model. To this end, we applied the M5P tree algorithm of machine learning which reveals that the wind speed is the major factor which affects the daily weight increase of swine.

• Journal of Animal Science and Technology
• /
• v.50 no.5
• /
• pp.621-632
• /
• 2008

Genetic polymorphisms was investigated at five single nucleotide polymorphisms(SNP) sites in four porcine genes(ADCYAP1R1, FABP3, MC4R, and MYL2) and analyzed their statistical association with growth traits in F2 reciprocal-crossbred population between Landrace and Jeju native black pig(JNP). All populations, JNP, Landrace and their F2 were polymorphic for all five SNP loci tested, however, the homozygote T/T of FABP3 g.-158T>C and the homozygote G/G of ADCYAP1R1 intron 2 337A>G were not found in JNP and Landrace, respectively. The genotypes of ADCYAP1R1 were significantly associated with body weights(BW) at 3 weeks and at 20 weeks(P<0.05), respectivley, those of FABP3 g.-135delT were associated with late average daily gain(LADG) (P<0.01), and those of FABP3 g.-158T>G were associated with body weights during late growth period such as, BW20 and LADG(P<0.01). Those of MC4R were also significantly associated with BW10 suggesting by the difference of early average daily gain(EADG) (P<0.05), and with LADG(P<0.01). The body length of F2 animals was affected by the genotypes of ADCYAP1R1, MC4R, and MYL2(P<0.05), respectively. Among these, MC4R A/A homozygotes showed over 3 cm longer in body length than those of other genotypes. As the useful basic information, these results suggested that SNP markers showing statistical association with growth traits and the results help to select the sires of JNP for improving the productivity in JNP-related crossbreeding system in pig industry and also to construct the molecular breeding system for breed improvement of JNP itself.

• Journal of Animal Environmental Science
• /
• v.16 no.3
• /
• pp.193-204
• /
• 2010

The goal of this study was to develop a high-rise hog building(HRHB) for growing-fattening stages. HRHB was two story building and was suitable for specific environment in Korea. Manure was treated in a first floor and pigs were raised on the slatted second floor. Three ventilation systems - 1) duct inlet to wall exhaust system(V1), 2) eave inlet to wall exhaust system(V2), and 3) ceiling inlet to wall exhaust system(V3) - were used. This experiment was conducted during winter and from summer to fall. Air temperature, air speed, ammonia, hydrogen sulfide in HRHB, and swine growth rate were measured. During winter, air temperature in V1 system tended to be slightly high without any effect of outside air temperature. Maximum temperature from summer to fall was between 33.4 and $33.8^{\circ}C$ and there was no significant difference among systems. Continuously measured daily temperature was lower in V2 system than other systems and the fluctuation of air temperature was high. Air speed in V1 and V2 systems were similar (0.02~0.21 m/s), and was 0.04~0.15 m/s in V3 during winter. From summer to fall, air speed in V1, V2, and V3 systems were 0.10~0.41 m/s, 0.10~0.83 m/s, and 0.11~0.26 m/s, respectively. V2 system showed bigger fluctuation of air speed than other systems. During winter, the highest concentrations of ammonia in V1, V2, and V3 systems were 7.0, 3.5, and 8.7 ppm, respectively. Hydrogen sulfide was not detected. The highest concentrations of ammonia from summer to winter in V1, V2, and V3 systems were 6.1, 2.8, and 5.6 ppm, respectively. Swine growth showed no statistical significance among systems. However, daily weight gain was approximately 4% higher in V1 and V3 than in V2. Feed intake/daily weight gain was approximately 4% higher in V1 than other systems. From summer to fall, daily weight gain in V1 and V3 tended to approximately 3% higher than other systems, and feed intake/daily weight gain was approximately 2% higher in V1 than other systems. Hence, V2 system for the ventilation system of HRHB should not be utilized.

• Journal of Animal Science and Technology
• /
• v.47 no.3
• /
• pp.391-396
• /
• 2005

이 연구는 거세가 제주 수말 비육시 성장 및 육질에 미치는 영향을 구영하기 위해 수행되었다. 24필(16-20개월령 )의 제주마를 12두씩 대조구(비거세)와 거세구에 3반복 (반복 당 4두)으로 배치하여 380일 동안 비육 시험을 실시하였다. 건초와 물은 자유급식 시켰고, 농후사료는 초기 260일 동안 체중의 1.25%, 후기 120 일 동안은 체중의 1.5% 급여하였다. 일당증체량과 사료섭취량은 처리 간 차이가 없었다. 등심단면적은 거세시 다소 증가되었고(P < 0.05), 근내지방도도 유의적 차이는 없었지만(P=0.08) 거세에 의해서 개선되는 경향을 보 였다{2.10 vs 1.59). 거세에 의해서 말고기 등심의 조지방 힘량은 증가된(P < 0.01) 반면, 수분과 조단백질 함량 은 감소되는 경향을 보였다 등심의 육색, pH, 가열감량 및 보수력은 거세 유무에 따른 차이를 보이지 않았 으나， 전단력은 거세구가 다소 감소하는 경향을 보였다(5.2vs 6.4 kg / 1.0-cm diameter core). 말고기 관능평가 에서는 거세구가 비거세에 비해 다즙성 연도 및 향미에서 개선된 경향을 보였다. 이 연구 결과, 제주마를 거 세 비육함으로써 근내지방도를 증가시켜 말고기의 육질을 개선시킬 수 있을 것으로 사료된다.

• Journal of the Korean Data and Information Science Society
• /
• v.20 no.1
• /
• pp.171-178
• /
• 2009

In order to make the high quality Korean cattle, it has been identified the gene which influence to various economic characters. In this paper, we introduce Restricted Partition Method for gene-gene interaction analysis. Further, economic traits, longissimus muscle dorsi area (LMA), carcass cold weight (CWT) and average daily gain (ADG) are applied with Restricted Partition Method (RPM). The SNP (19_1)$^*$SNP (28_2) was selected and was best marker on Single nucleotide polymorphisms (SNPs). It also influenced SNP (19_1)$^*$SNP (28_2) was an very important marker for economic character and to make the thing know it became.

• Proceedings of the Korean Society of Organic Agriculture Conference
• /
• 2008.09a
• /
• pp.77-89
• /
• 2008

본 연구는 유기흑염소 생산에 기초적인 자료를 얻고자 유형이 다른 산지 초지에 방목하여 흑염소의 발육과 육질에 미치는 영향을 조사하였다. 공시축은 흑염소 40두를 4처리구(개량목초구, 유기목초구, 산야초구, 수엽류구)로 나누어 처리구당 10두씩 공시하여 2007년 5월 15일부터 2007년 11월 5일까지 174일간 농촌진흥청 축산과학원 가축유전자원시험장 방목지에서 수행하였다. 그 결과는 다음과 같다. 일당증체량은 개량목초구가 다른 시험구 보다 유의하게 높았다(p<0.05). 도체율은 개량목초구와 유기목초구가 산야초구와 수엽류구 보다 유의하게 높게 나타났다(p<0.05). 정육율은 개량목초구가 유의하게 높게 나타났다(p<0.05). 흑염소 고기의 조지방은 산야초구가 높은 경향이었다. 고기의 리놀레산과 리놀렌산은 개량목초구 보다 유기목초구, 산야초 및 수엽류구가 높은 경향이었으며, 아라키돈산은 산야초와 수엽류구가 다른 시험구 보다 높은 경향으로 나타났다. 전단력은 산야초구가 낮은 경향이었으며, 관능검사 결과 중 다즙성과 연도는 유기목초구와 산야초구가, 풍미는 산야초구와 수엽류구가 우수한 경향으로 나타났다. 이상의 결과를 종합해 보면, 산지에 방목 사육된 유기흑염소는 다소 생산성과 도체특성은 낮으나 육질 및 물리적 특성이 우수한 경향으로 나타나 고품질 유기축산물 생산으로 농가소득 증대뿐만이 아니라 소비자 요구충족에도 가능성이 높은 것으로 기대된다.

• Korean Journal of Agricultural Science
• /
• v.34 no.2
• /
• pp.111-117
• /
• 2007

This study was carried out to investigate the influences of feed containing activated charcoal on the performances of calves The daily weight gain, feed intake, feed requirement and the content of ammonia in the excreta were measured. The experiment was conducted with 10 male calves for 30 days. Each were equally divided with treatment group and control group and for the treatment group's animal fed diets containing 1.0% activated charcoal. The daily weight gain of calves were decreased by 1.92% when they were fed activated charcoal(1.02kg/day) compared to that of control calves(1.04kg/day) and the daily feed intake of treatment group(2.86kg/day) was 10.06% lower comparing to the control group(3.18kg/day). In case of feed requirement, the result showed 8.2% lower in the treatment group(2.80kg) than control group(3.06kg). The content of ammonia in excreta was significantly lower for treatment group(0.33ppm) than control group (2.67ppm)(p<0.05), which showed more improvement for reducing ammonia content in the treatment group with 87.6%(p<0.05).

• Journal of Animal Environmental Science
• /
• v.1 no.2
• /
• pp.137-144
• /
• 1995

This experiment was conducted to determine the effects of non-climatic environmental factors on growth performances and behavioural patterns of weanling pigs. Three hundred and sixty weanling pigs were contained and carried out with three levels of spaces per pig(0.18, 0.23 and 0.30$m^2$) and three different numbers of pigs per pen(15, 20 and 25 pigs) up to 30kg body weight. Designed by using a 3 $\times$ 3 factorial arrangement(three levels of spaces $\times$ three different numbers of pigs). This experiment investigated the effects of main factors and the relationship between each factors. The result of this experiment were summarized as follows ; 1. The reduction of floor space caused the reduction of feed/gain in the weanling pigs. Pigs responded with the increased feed intake(p<0.01) and with no change in body weight gain. 2. There were no significant differences in the body weight gain and feed/gain in weanling pigs by changing group sizes, but group size affected the feed intake significantly(p<0.01). 3. Space allowance affected the behavioural patterns significantly(p<0.01) of weanling pigs. The reduction of floor space caused the increment of aggressive behaviour and weanling pigs responded with the decreased resting, non aggressive social and play behaviour. 4. There were no significant differences in the resting, eating, aggressive and non aggressive social behaviour in weanling pigs by changing group sizes, but the large group size caused the reduction of play behaviour in the weanling pigs(p<0.01). 5. Therefore we concluded that weanling pigs require 0.23$m^2$ per pig and 20~25 pigs per pen for the better environment condition.