• Journal of Animal Science and Technology
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• 제62권1호
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• pp.14-20
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• 2020

The goal of this study was to determine an effective interval of playing a nursing sound stimulus. One hundred forty four lactating multiparous sows (Landrace; parity range: 2 to 7) and their litters (Landrace × Yorkshire) were divided into 3 block (48 each), each of which was randomly assigned to one of the four treatment groups including control which had no call stimulus (n = 12 each). The call of nursing and suckling, plus a click sound, were used as a nursing sound stimulus that was played in the intervals of 35 min (T35), 40 min (T40) and 45 min (T45) right after the first parturition in each experimental group until the day of weaning. Nursing sound stimuli did not affect the sow feed intake and back fat thickness loss. No differences were detected among treatments in the percentages of sows returning to estrus within 5 days after weaning and sows without crushed piglets. However, the piglets' weaning weight and daily weight gain in T35 and T40 groups was greater (p < 0.01) than the controlled piglets. These results suggest that a nursing sound stimulus can improve the performance of suckling piglets, and that 35 or 40 min interval of playing a nursing sound could be the effective sound stimulus for nursing sows.

• 한국동물위생학회지
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• 제40권2호
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• pp.133-137
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• 2017

Three swine farms which were suffering from slight economic loss due to suckling piglets' diarrhea, were selected to apply commercialized multivalent vaccine for sow use; $SUISENG^{(R)}$ (Hipra, Spain). Farms were pre-diagnosed with clinical symptoms and molecular detection of C. perfringens Type A and C and E. coli pili by PCR. Sows were vaccinated twice 2 ml of the vaccine at 6 and 3 weeks ante partum intramuscularly according to the manufacturer's instruction. All vaccinated sows did not show any adverse reaction or clinical signs; hypersensitivity, fever, granuloma or abscess on the injection site, appetite loss, and so on. Also, no reproductive disorder was appeared in vaccinated sows compared with non-vaccinated control sows. The results suggested that piglets born from vaccinated sows show significantly better performance in regard of the diarrhea index and mean daily weight gain compared with piglets from non-vaccinated sows. Therefore, the commercial vaccine for the prevention of neonatal diarrhea is found to be effective in reducing diarrhea in the first suckling period of piglets after birth.

• 한국동물위생학회지
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• 제40권3호
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• pp.209-213
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• 2017

Congenital tremor (CT) is a sporadic neurodegenerative disease reported in suckling piglets worldwide. Since atypical porcine pestivirus (APPV) was first identified in US in 2015, it has also subsequently detected in Europe and China as a causative pathogen for CT in suckling piglets. Three new-born piglets died from severe tremor was submitted to Chonbuk National University-Veterinary Diagnostic Center (CBNU-VDC) and various tissues (lung, lymph node, brain, intestine) were tested with panpestivirus RT-PCR and APPV NS5B-specific RT-PCR. All of the samples were positive by both of the PCR tests and the partial NS5B sequences of APPV were confirmed by sequencing on the PCR products of APPV NS5B-specific RT-PCR. Therefore, we report the first identification of APPV from a case of CT in suckling piglets in Korea.

• Journal of Animal Science and Technology
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• 제47권4호
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• pp.691-696
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• 2005

본 연구는 모돈이 서있거나 앉아 있을 때 모돈의 배 밑에 공기를 분사하는 것이 모돈과 포유자돈의 압사 관련 행동에 미치는 영향을 규명하고자 수행되었으며, 공시동물로는 경산돈 16복과 포유자돈 179두가 분만 후 4일까지 이용되었다. 모돈의 행동을 관찰한 결과, 서있는 행동과 앉아있는 행동에 있어서 대조구와 공기분사구간에 차이가 없는 것으로 나타나 공기분사가 모돈의 행동에 영향을 미치지 않는 것으로 분석되었다. 반면에 압사와 밀접하게 관련 있는 4가지 포유자돈의 행동을 관찰한 결과 모돈의 뒤로 지나가는 행동, 모돈의 뒤에 서있는 행동, 모돈의 배 밑으로 지나가는 행동, 모돈의 배 밑에 서있는 행동 모두가 대조구에 비해 공기분사구에서 현저히 낮게 나타났다. 따라서, 모돈이 서있거나 앉아있을 때 모돈의 배 밑에 공기분사를 함으로써 모돈의 행동과 포유자돈의 건강에 영향을 미치지 않고 포유자돈의 압사 관련 행동을 억제하여 포유자돈의 압사를 효과적으로 방지할 수 있을 것으로 예상된다.

• Asian-Australasian Journal of Animal Sciences
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• 제18권10호
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• pp.1485-1491
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• 2005

This experiment was conducted to investigate the effects of iron from an amino acid complex (Availa-$Fe^{\circledR}$) on the iron status of neonatal and suckling piglets. A total of 24 gestating sows (Landrace${\times}$Large White) were randomly allocated to three dietary treatments. The control diet contained 80 mg $kg^{-1}$ Fe from ferrous sulfate heptahydrate ($FeSO_4$.$7H_2O$), while the two experimental diets were supplemented with an additional 120 mg $kg^{-1}$ Fe from Availa-$Fe^{(R)}$ or $FeSO_4$.$7H_2O$, respectively. The lactating sows remained the same iron treatments as gestating sows, while neonatal piglets of 24 litters born from the above sows were allotted to another three treatments. Piglets from the sows of the control treatment were fed basal diet with no supplemental Fe as control treatment, but were injected with 100 mg Fe as Fe dextran at birth. Piglets from the sows of Availa-$Fe^{(R)}$ or $FeSO_4$.$7H_2O$ treatments were supplemented with 120 mg $kg^{-1}$ iron from Availa-$Fe^{(R)}$ or $FeSO_4$.$7H_2O$, respectively. The total born alive and weaned, and the average piglets weight at birth and at weaning were not significantly affected by the sow' dietary treatments (p>0.05). Iron from Availa-$Fe^{(R)}$ did not demonstrate a statistically significant improvement in hemoglobin concentration, hematocrit and plasma iron of sows on day 90 and 105 of pregnancy and the milk iron of sows during lactation (p>0.05). Neonatal piglets in the Availa-$Fe^{(R)}$ treatment had a significantly higher hemoglobin concentration (p<0.05) and higher hematocrit and plasma iron (p>0.05) than those in the other two treatments, respectively. The hemoglobin of suckling piglets in the Availa-$Fe^{(R)}$ treatment was higher than that of piglets in $FeSO_4$.$7H_2O$ treatment on day 28 (p<0.05). The total iron binding capacity of piglets in Availa-$Fe^{(R)}$ treatment was lower than that of piglets in the control and $FeSO_4$.$7H_2O$ treatment on day 14 (p<0.05), but there was not a statistically significant difference among three treatments on day 28 (p>0.05). However, the hemoglobin and hematocrit of suckling piglets injected with Fe were higher than those of piglets in the other two treatments (p<0.05). This study indicated that the addition of 120 mg $kg^{-1}$ iron from amino acid complex into the diets improved iron status of neonatal and nursing piglets more effectively than the addition of 120 mg $kg^{-1}$ iron from $FeSO_4$.$7H_2O$, however, this improvement of the organic Fe was not sufficient to replace the Fe injection for prevention of iron-deficiency anemia.

• 한국산학기술학회논문지
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• 제18권1호
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• pp.135-140
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• 2017

본 연구는 포유기간 중 이복자돈과의 합사가 모돈과 자돈의 체표면 온도 변화에 미치는 영향을 조사하기 위하여 실시하였다. 임신모돈 12두를 공시하여 6두는 개별 분만펜에 위치시켜 분만 후 이유시까지 복당 사육을 유지하였으며(대조구), 6두는 중간 칸막이의 제거가 가능한 가변형 분만펜에서 3복이 한 펜이 되도록 분만 11일차에 칸막이를 제거하여 이유시까지 유지하였다(처리구). 합사 30분 후에 열화상카메라를 이용하여 모돈 및 자돈의 체표면 온도를 측정하였다. 분만 후 포유모돈의 평균 체표면 온도는 처리구에서 $37.1^{\circ}C$로 대조구의 $36.3^{\circ}C$보다 유의적으로 높은 것으로 나타났고 (p<0.05), 최고온도에서는 두 처리간 유의적인 차이가 없었다. 이와 대조적으로, 포유 자돈의 평균 체표면 온도는 포유기 합사에 의해 유의적으로 감소하였으며(대조구 37.5, 처리구 $36.0^{\circ}C$; p<0.01). 최고온도에서 또한 대조구와 처리구에서 각각 $39.4^{\circ}C$와 $39.1^{\circ}C$로 유의적인 차이는 아니지만 대조구에서 낮은 경향으로 관찰되었다(p=0.079). 결론적으로 포유기간 중에 이복자돈과의 합사에 의해 모돈의 체표면 온도는 상승되지만, 자돈의 체표면 온도는 감소하는 것으로 관찰되었다. 더 나아가 체표면 온도와 심부온도와의 상관관계를 구명하고, 합사에 의한 모돈 및 자돈의 생리적 변화에 대한 연구가 필요할 것으로 사료된다.

• 대한수의학회지
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• 제20권1호
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• pp.25-27
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• 1980

The outbreak of viral encephalomyelitis (Talfan disease) in suckling piglets was diagnosed pathologically for the first time in Korea. The clinical signs of affected sucklings were very high morbidity without death, and fever ($39^{\circ}C$ or higher) with incoordination of the rear limbs and paresis, while no specific gross lesions were observed at autopsy. Histopathological changes were confined to the nervous system, and were of the nature of a nonsuppurative and nondemyelinating encephalomyelitis which is usual for the viral encephalitis. It was characterized by perivascular cuffing, meningitis, neuronal degeneration, neuronophagia and glial nodules in the brain and spinal cord.

• 농업과학연구
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• 제48권1호
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• pp.1-9
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• 2021

A total of twenty-four multiparous sows (Landrace × Yorkshire) and their litters were used in this 21-day experimental trial. Based on their body weight, sows were randomly allocated into one of three treatments with eight replicates. The dietary betaine supplementation contained three levels: (i) CON (Basal diet + 0% Bet), (ii) Bet 0.05% (CON + 0.05% Betaine), and (iii) Bet 0.15% (CON + 0.15% Betaine). The supplementation of betaine had no effect (p > 0.05) on body weight and feed intake of lactating sow. Moreover, no significant response was observed on backfat thickness, body condition score, and weaning of the estrus interval with the dietary supplementation of betaine. In addition, the litter weaning weight, litter weight gain, average litter daily gain, and survivability rate at birth showed no significant difference with the dietary betaine supplementation of the sow diet. Fecal scores of the lactating sows and suckling piglets were not affected (p > 0.05) with the dietary betaine supplementation compared with the control diet during the experimental periods. The findings of this study showed that betaine supplementation does not boost growth performance, feed intake, body conditions, and fecal score in lactating sows and suckling piglets fed a corn-soybean meal-based diet.

• Journal of Animal Science and Technology
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• 제63권4호
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• pp.778-789
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• 2021

The objective of this study is to investigate the effect of dietary glucose oxidase (GOx) supplementation on the reproductive performance, litter performance, total tract digestibility, and blood profile of lactating sows fed corn- wheat-based diet. A total of twenty multiparous sows (Landrace × Yorkshire) were allocated into one of four treatments with five replicates per treatment. The dietary treatments were as follows: CON (Basal diet), GO1 (basal diet + 200 U GOx/kg), GO2 (basal diet + 300 U GOx/kg), GO3 (basal diet + 400 U Gox/kg). Dietary GOx supplementation did not affect lactating sow's reproduction performance as well as body weight, backfat thickness, and body condition score during pre and post farrowing, and at weaning (p > 0.05). However, after farrowing to weaning period lactating sow's fed GOx supplement has linearly (p = 0.0196) decreased the bodyweight loss. While, there were no effects (p > 0.05) observed on sows backfat thickness loss, average daily feed intake, and estrus interval among treatment groups. Dietary supplementation of GOx has linearly improved the body weight gain (p = 0.049) and average daily gain (p = 0.040) of suckling piglets. The total tract digestibility of dry matter and nitrogen was linearly increased with the graded level of GOx supplement. Also, a linear effect was observed on the glucose and superoxide dismutase of blood profile with the dietary inclusion of GOx. In summary, our finding indicates that the dietary inclusion of GOx supplement with corn- wheat-based diet had a beneficial effect on the nutrient digestibility and blood profile of lactating sows and improved the growth performance of suckling piglets.

• Journal of Animal Science and Technology
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• 제65권3호
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• pp.562-578
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• 2023

The aim of the present study was to evaluate the effects of dietary supplementation of Ca-Mg complex on the longevity and reproductive performance of sows. In total, seventy-two gilts ([Yorkshire × Landrace] × Duroc, average body weight 181 kg) were randomly allocated to 1 of 3 treatments during 4 successive parity in a 4 × 3 factorial arrangement. Treatments consisted of CON (basal diet), CM1 (basal diet -MgO - 0.3% limestone + 0.4% Ca-Mg complex), and CM2 (basal diet - MgO - 0.7% limestone + 0.4% Ca-Mg complex). A higher (p < 0.05) number of totals born and live piglets, and sows increased feed intake during gestation and lactation, increased backfat thickness, and increased estrus interval were observed (p < 0.05) during their third and fourth parity than during their first and second parity. Ca-Mg complex supplementation improved (p < 0.05) the number of total piglets during the first and second parity as well as live-born piglets during the first to third parity, reduction (p < 0.05) in backfat thickness during the third and fourth parity, a higher (p < 0.05) initial and final number of suckling piglets as well as higher weaning weight compared with sows fed CON diet during the first, second, and third parity. The average daily gain (ADG) was higher (p < 0.05) in piglets born to CM1 and CM2 sows regardless of parity. The treatment diets fed to sows lowered (p < 0.05) the duration of first to last piglet birth and placenta expulsion time compared with CON sows. A significant interactive effect (p = 0.042) between parities and treatment diets was observed for the first to last piglet birth. Thus, Ca-Mg complex supplementation by partially replacing limestone in the basal diet enhanced sow performance, specifically during their third and fourth parity, thereby improving sow longevity.