• Journal of Animal Science and Technology
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• v.63 no.2
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• pp.199-210
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• 2021

A number of management issues can be used as drivers for change in order to improve animal welfare and nursing capacity of the hyperprolific sow. Group housing of sows during gestation is a recommended practice from the perspective of animal welfare. Related health issues include reproductive health and the locomotor system. It appears that management of pregnant sows in groups is challenging for a producer and considerable skill is required. We explored the benefits and challenges of group housing, including feeding issues. Increasing litter size requires additional attention to the mammary gland and its ability to provide sufficient nursing for the growing litter. We discuss the fundamentals of mammary development and the specific challenges related to the hyperprolific sow. We also address challenges with the farrowing environment. It appears that the old-fashioned farrowing crate is not only outdated in terms of welfare from the public's perspective, but also fails to provide the environment that the sow needs to support her physiology of farrowing, nursing, and maternal behaviour. Studies from our group and others indicate that providing the sow with a loose housing system adequate in space and nesting material, along with reasonable chance for isolation, can be considered as fundamental for successful farrowing of the hyperprolific sow. It has also been shown that management strategies, such as split suckling and cross fostering, are necessary to ensure proper colostrum intake for all piglets born alive in a large litter. We thus conclude that welfare and nursing capacity of the sow can be improved by management. However, current megatrends such as the climate change may change sow management and force the industry to rethink goals of breeding and, for instance, breeding for better resilience may need to be included as goals for the future.

• Journal of Nutrition and Health
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• v.25 no.2
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• pp.123-131
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• 1992

Concentrations of 5 major minerals(Na, K, Ca, P, Mg) and 3 trace elements(Mn, Mo, Ni) were measured in human milk samples collected from 21 highly selected healty lactating women at 2-5 days and at 1, 2, 4, 6 and 12 weeks postpartum. Significant decrease in contents of the major minerals and trace elements were found with time postpartum. Sodium contents decreased from 293.01ug/N at 2-5 days to 194.27ug/N at 12 weeks. Potassium contents also decreased from 436.18ug/N in colostrum to 358.51ug/N in matured milk at 12 weeks. The Ca/P ratios of colostrum transitional and matured milk were 3.39, 281 and 2.45 respecti-vely. Mean manganese levels of colostrum and transitional were 0.024ug/N and those of matured milk were 0.014ug/N. Molybdenum concentrations in the breast-milk collected at 1, 2, 4 weeks were higher than those in the milk samples at 2-5 days and 12 weeks Nickel content of colostrum was 0.062ug/N and those of trnsitional matured milk were 0.22ug/N and 0.017ug/N, These determinations will provide the basic information on the variability of minerals and trace elements as lactation proceed and the comparison of the components between term and preterm milk.

• Korean Journal of Animal Reproduction
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• v.11 no.2
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• pp.112-121
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• 1987

After a detailed review of the literature availabe on the problems of immunoglobulin level in colostrum and blood serum of calves and after a discussion of its impact on health condition, the following investigations on this subject are presented. 1. Calves to fail ill in the rearing period show significantly lower serum Ig levels even during the first two days of life, when they are still clinically healthy, as well as up to the end of the first week of life than those of calves remaining in good health. 2. Ig values sharply rise during the disease period, IgA and IgM responding more rapidly than IgG. 3. In calves suffering from a disease of the gastrointestinal tract serum IgM titer is lowest, while in calves suffering from a disease of the respiratory duct serum IgA titer is lowest and in those suffering or dying from both disease complexes all Ig titers are reduced. 4. Calves showing high serum Ig levels during the first three days of life reveal higher daily gains in weight than those with lower serum Ig levels during that period.

• Korean Journal of Veterinary Research
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• v.51 no.1
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• pp.55-58
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• 2011

Two 4-day-old Thoroughbred foals with acute clinical signs of depression, elevated pulse and respiratory rates, anemia, and jaundice were referred to the equine hospital of Korea Racing Authority. The foals were seemingly normal at birth, but showed clinical signs such as abnormal behavior, jaundice and anemia suddenly after ingestion of the mare's colostrum, followed by death at 4 days after birth. According to the results of the hematology, serum chemistry analysis, jaundice foal agglutination test, and blood groups test, the foals were diagnosed as neonatal isoerythrolysis (NI) caused by the mare's antibodies. These results suggested that the pregnant mares have a potential for NI.

• Asian-Australasian Journal of Animal Sciences
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• v.10 no.3
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• pp.298-303
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• 1997

Sixteen holstein heifers were employed to study the effect of thermal stress on rectal temperature and mineral status of heifers around parturition during hot and cool weather. During the hot weather, rectal temperatures of the heifers measured at 08:30 and 15:30 h from 7 d prepartum to parturition were higher than those during the cool weather. Blood hematocrit and hemoglobin were not significantly different between the hot and cool weather, but at 2 and 1 wk prepartum, those during the hot weather were higher. Plasma Ca, inorganic P and Fe of the heifers during the hot weather were higher than those during the cool weather, but plasma Mg and Zn and serum alkaline phosphatase during the hot weather were lower. Colostral protein and Mg of heifers at parturition during the hot weather were lower than those during the cool weather, but colostral Ca, P, Fe and Zn were not affected by the weather.

• Journal of the Korean Society of Food Science and Nutrition
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• v.17 no.1
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• pp.73-76
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• 1988

The postnatal changes of taurine in human breast milk were examined. Breast milk samples were collected at 3-5 th day and 30 th day after delivery. Taurin content of colostrum and mature milk was 424n mole/ml and 294.4n mole/ml, respectively, The content of taurine was slight decrease during breast- feeding.

• Korean Journal of Organic Agriculture
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• v.9 no.4
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• pp.135-148
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• 2001

Antibiotics supplementation in animal feeds results in bacterial resistance to the antibiotics and residue of the antibiotics in animal products, which can cause serious problems in human health. Therefore, the finding of new substances replacing antibiotics are needed. New substances are egg york antibody, probiotics, organic acid, mannanoligosaccharide(MOS), fructooligosaccharide(FOS), and chitosan etc. Egg york antibody is antibody to obtain from egg york of the chicken injected the specific antigen. Probiotics can prevent the problems of residue of the antibiotics and resistance to the antibiotics. Organic acids ctrl preservation of colostrum inhibit the rottenness and increase the beneficial bacteria. MOS and FOS increase the beneficial bacteria, too. Chitosan is used the immune material to active the anti-bacteria.

• Food Science of Animal Resources
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• v.29 no.2
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• pp.164-167
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• 2009

The lactoferrin from mongolian mare colostrum has been purified by gel filtration (Sephadex G-100), affinity chromatography (Toyopear1-AF-Heparin-650M) in two steps. Mare lactoferrin-containing fractions were identified in the first peak among 3 peaks on Sephadex G-100 as first step, and purified lactoferrin was eluted with a step gradient of 0.5M NaCl as a 3 step (gradient 0.1,0.3, 0.5M). Eluted fractions were analyzed by 12% SDS-PAGE, and showed a single protein. Its molecular weight was estimated to be 82kDa. N-terminal amino acid sequence was determined as APRKSVRWCTISPAEXAKXA.

• Korean Journal of Veterinary Pathology
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• v.2 no.2
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• pp.107-116
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• 1998

Twelve colostrum-deprived piglets were inoculated oral1y with porcine epidemic diarrhea virus isolated from Korea. The piglets were euthanatized from at 12 hour postinoculation(PI) at 6-hour intervals. At 24 to 36 hours PI, all infected piglets showed severe yellowish to watery diarrhea, dehydration, depression, and anorexia. At necropsy, the intestinal wall looked thin, mesenteric vessels congested, and mesenteric lymph nodes edematous. The histological findings showed marked villous atrophy and fusion, severe degeneration of enterocytes and monomuclear cell infiltration in the lamina propria. On electron microscopy, villous epithelial cells of infected jejunum contained viral particles at 18 hour PI. The viral particles were pleomorphic spheres with a mean diameter of 95∼180nm including 18nm projections.

• The Korean Journal of Food And Nutrition
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• v.8 no.2
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• pp.70-78
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• 1995

We had examined the levels of specific IgG and IgA to dietary antigens in human breast milk and the relationships between the maternal food intake and the specific antibody level. The highest antibody titers were found in colostrum and decreased as lactation progressed. The specific antibody level was not affected by maternal calorie or protein intake, but affected by the intake frequency of a kind of food. Egg and meat intake significantly related to anti-OVA IgG and anti-BSA IgA antibodies, respectively. Meat intake frequency was generally affected by the other specific antibody levels.