• Journal of Animal Science and Technology
• /
• v.54 no.4
• /
• pp.291-297
• /
• 2012

This study was carried out to investigate the effect of dietary phytase on nitrogen and phosphorus excretion of gestating and lactating sows (Yorkshire ${\times}$ Landrace ${\times}$ Duroc). Twelve gestating sows and twelve lactating sows were used in this study and were divided into 2 groups (1 control group and 1 treatment group, 6 replications/group) the control group was without phytase and the treatment group was fed with phytase (750 FTU/kg) in the diet, respectively. Body weights of gestating and lactating sows were $208.9{\pm}13.8$ kg and $190.5{\pm}22.9$ kg, respectively. In gestating sows, feed intake was greater in phytase fed group than the control (P<0.05), but water intake and total excretion were not different between the groups. In lactating sows, feed and water intakes and total excretion were not different between the groups. The N intake of lactating sows was higher in phytase fed group than control (P<0.05) but N excretion ratio was not different. In lactating sows, N intake and excretion and N excretion ratio were not significantly different between the groups. P excretion and excretion ratio in gestating sows decreased by phytase treatment (P<0.05) as compared to control. In lactating sows, N intake and excretion was not significantly different by added phytase (P>0.05). Finally, dietary addition of phytase decreased P excretion in feces of gestating and lactating sows.

• Journal of Animal Environmental Science
• /
• v.6 no.2
• /
• pp.121-130
• /
• 2000

Pure voice characteristics of sow were analyzed to predict parturition time. These were analyzed by using oscilloscope and Sound Forge and the results showed that the voice frequency and amplitude of sow were in the range of 30∼2,500Hz and -35∼-75dB. According to the sound analysis results, the frequencies of sound appearance from farrowing sow in the farrowing pen for three days prior to delivery day and eight hours of prior to delivery day and eight hours of prior to time were around 85% and 46%, respectively of the total appearance during eight days to delivery. Forecasting of delivery time of farrowing sow using the number of sound occurrences showed a promising result such that those have been increased whenever the delivery time was approached. The forecasting success rates were 100% for both of one day and six hours prior to the actual delivery.

• Korean Journal of Agricultural Science
• /
• v.27 no.2
• /
• pp.107-116
• /
• 2000

Pure voice characteristics of sow were analyzed to predict parturition time. These were analyzed by using oscilloscope and Sound Forge and the results showed that the voice frequency and amplitude of sow were in the range of 30~2,500Hz and -35~-75dB. According to the sound analysis results, the frequencies of sound appearance from farrowing sow in the farrowing pen for three days prior to delivery day and eight hours of prior to time were around 85% and 46%, respectively of the total appearance during eight days to delivery. Forecasting of delivery time of farrowing sow using the number of sound occurrences showed a promising result such that those have been increased whenever the delivery time was approached. The forecasting success rates were 100% for both of one day and six hours prior to the actual delivery.

• Journal of Bio-Environment Control
• /
• v.7 no.2
• /
• pp.91-108
• /
• 1998

This study was carried out to survey basic information of swine farms on the machine holdings. facility type. management of manure by farm scale and operation, and then to develop the mechanization model. Manual feeding was common for sows and nursing sows. but automation feeding was normally furnished for weaners. growing pigs and castrated male pigs. Water supplies was completely automated for all of the surveyed swine farms. Fully mechanized and automated system would not be feasible and affordable for the small scale farms breeding less than 500 heads. Because the environmental control for the nursing sows and weaner was important, some swine houses were constructed with the windowless type. However, the furnished rates ranged from 22.2% to 44.4% of the surveyed nursing sow and weaner houses at the farm scales. In the future, a computerized ventilation system would be commended for the efficient use of heat energy and to maintain the desirable temperature of swine buildings. Over-investment for large scale farm and over-crowded pigpen of small farm would cause wasting construction expenses and spreading epidermic diseases Hence, the size of swine building should follow the recommended scale. The fermentation drier was recommended for the manure management. Urine could be recycled or discharged after treating by the activated sludge process.

• The Korea Swine Journal
• /
• v.21 no.9 s.241
• /
• pp.75-79
• /
• 1999

경기 이천, 충북 괴산, 강원 원주 일대 양돈농가들이 98년 10월경 대상(주)의 임신돈, 포유돈 사료를 먹인 돼지들에게서 고열과 사료 섭취거부, 구토, 유산, 무유증, 모돈의 야윔, 모돈 폐사 등이 발생해 30여 양돈농가에서 5만여 마리의 돼지가 떼죽음을 당하는 심각한 피해가 발생했다며 보상을 요구하고 있다. 피해농가들은 대상(주) 이천배합사료 공장의 포유돈, 임신돈 사료에 곰팡이 독소가 함유되어 이같은 피해가 난것"이라고 주장하고 있다. 피해 농가들은 충주대학교 식품과학과 이웅수 교수, 경상대 식품과학과 정덕화 교수 등을통해 사료에서 곰팡이 독소가 검출됨을 확인하고 14농가가 대상(주)와 서울지방법원 남부지원에 51억 3백만원의 손해배상 소송을 제기했다. 반면, 대상(주) 측에서는 사료와는 전혀 관계가 없는 일이라 주장하고 있으며, 농가측의 주장을 전면 부정하고 있다.

• The Korea Swine Journal
• /
• v.11 no.2 s.114
• /
• pp.136-138
• /
• 1989

임신말기에 동계의 경우는 신생자돈을 수용하기 위한 난방시설을 강구하여 돈방 전체가 보온이 되도록 하며, 특히, 샛바람이 들어오지 않도록 주의해야 한다

• The Korea Swine Journal
• /
• v.16 no.6 s.178
• /
• pp.144-147
• /
• 1994

• The Korea Swine Journal
• /
• v.25 no.8 s.288
• /
• pp.178-183
• /
• 2003

• The Korea Swine Journal
• /
• v.12 no.2 s.126
• /
• pp.146-149
• /
• 1990

• The Korea Swine Journal
• /
• v.18 no.12 s.208
• /
• pp.124-129
• /
• 1996