• Animal Bioscience
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• 제36권8호
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• pp.1263-1273
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• 2023

Objective: This study was conducted to evaluate the effects of crude protein (CP) levels on the physiological response, reproductive performance, blood profiles, milk composition and odor emission in gestating sows. Methods: Seventy-two multiparous sows (Yorkshire×Landrace) of average body weight (BW), backfat thickness, and parity were assigned to one of six treatments with 10 or 11 sows per treatment in a completely randomized design. Experimental diets with different CP levels were as follows: i) CP11, corn-soybean-based diet containing 11% CP; ii) CP12, corn-soybean-based diet containing 12% CP; iii) CP13, corn-soybean-based diet containing 13% CP; iv) CP14, corn-soybean-based diet containing 14% CP; v) CP15, corn-soybean-based diet containing 15% CP; and vi) CP16: corn-soybean-based diet containing 16% CP. Results: There was no significant difference in the performance of sow or piglet growth when sows were fed different dietary protein levels. Milk fat (linear, p = 0.05) and total solids (linear, p = 0.04) decreased as dietary CP levels increased. Increasing dietary CP levels in the gestation diet caused a significant increase in creatinine at days 35 and 110 of gestation (linear, p = 0.01; linear, p = 0.01). The total protein in sows also increased as dietary CP levels increased during the gestation period and 24 hours postpartum (linear, p = 0.01; linear, p = 0.01). During the whole experimental period, an increase in urea in sows was observed when sows were fed increasing levels of dietary CP (linear, p = 0.01), and increasing blood urea nitrogen (BUN) concentrations were observed as well. In the blood parameters of piglets, there were linear improvements in creatinine (linear, p = 0.01), total protein (linear, p = 0.01), urea (linear, p = 0.01), and BUN (linear, p = 0.01) with increasing levels of dietary CP as measured 24 hours postpartum. At two measurement points (days 35 and 110) of gestation, the odor gas concentration, including amine, ammonia, and hydrogen sulfide, increased linearly when sows fed diets with increasing levels of dietary CP (linear, p = 0.01). Moreover, as dietary CP levels increased to 16%, the odor gas concentration was increased with a quadratic response (quadratic, p = 0.01). Conclusion: Reducing dietary CP levels from 16% to 11% in a gestating diet did not exert detrimental effects on sow body condition or piglet performance. Moreover, a low protein diet (11% CP) may improve dietary protein utilization and metabolism to reduce odor gas emissions in manure and urine in gestating sows.

• Journal of Nutrition and Health
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• 제27권2호
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• pp.141-152
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• 1994

The effects of feeding diets with different fatty acids on the composition of fatty acids and vitamin E status in maternal milk & serum and pup's serum were studied. Dietary fats(10% by wt) include on oil(CO), soybean oil(SO), perilla seed oil(PO : about 60% , C18 : 3 $\omega$3) and fish oil(FO : rich in C20 : 5$\omega$3, eicosapentaenoic acid = EPA & 22 : 6$\omega$3, docosahexaenoic acid = DHA), Sprague-Dawley rats weighing 200-250g, were fed experimental diets from pregnancy through lactation period. Maternal milk was obtained by gentle squeezing after 30 minutes of oxytocin(0.2 IU, intraperitoneal) injection. The fatty acid compositions of milk and serum were analyzed at day-2 and day-15. The concentrations of vitamin E in maternal milk and serum and pup's serum were also analyzed. The groups of CO, SO and PO which had no DHA in their diet, contained DHA in their milk, The rations of EPA+DHA/arachidonic acid(AA) were higher in PO group than those in either CO or SO group. This seemed to be due not only to more conversion from C18 : 3$\omega$3 to C20 : 5$\omega$3 and C22 : 6$\omega$3 but also to inhibition of C18 : 2$\omega$6 conversion to C20 : 4$\omega$6. More DHA was found in day-2 milk than in day-15 milk. It was also noted that milk contained more DHA was found in day-2 milk than in day-15 milk. It was also noted that milk contained more DHA than serum and this difference was larger in day-2 than in day-15 milk. Even though the concentrations of vitamin E both in maternal serum and milk were lower in PO and FO groups fed highly unsaturated fat than in CO or SO groups, pup's serum did not show a significant difference among all the experimental groups indicating that the pups man secure their essential nutrients by the biomagnification mechanism.

• 한국식품과학회지
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• 제26권4호
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• pp.355-358
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• 1994

두부 제조시 응고제의 첨가량과 phytic acid의 첨가가 두부의 물리화학적 특성에 미치는 효과를 검토하였다. 칼슘 농도가 0.029N 일때 응고한 단백길이 평형에 도달하기 시작하였으며, 칼슘 농도가 증가할수록 단백질 분자에 결합하는 칼슘의 양은 크게 증가하였다. 두부로 회수된 phytic acid 함량은 칼슘 농도가 0.029N 일때 최대에 이르렀다가 이상의 농도에서는 감소하였다. 두부의 강도는 응고제의 증가에 따라 급격히 증가하였고, 두부의 무게는 칼슘 농도가 0.022N 일때 최대에 이르렀다가 그 이상에서 감소하였다. 두부 제조시 phytic acid를 첨가하면 강도는 현저히 감소한 반면 무게는 증가하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제16권5호
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• pp.677-684
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• 2003

Twenty eight multiparous lactating cows were utilized in an experiment to evaluate the response to an exogenous fibrolytic enzyme on their lactational performance during early lactation period (in terms of milk production, milk composition, feed intake, milking efficiency, body weight change) and the exact time of this response. Cows were randomized into two groups (14 each) with similar parities and were fed a concentrate ration of barley, ground corn, soybean meal, and wheat bran and roughage ration of alfalfa hay. One of the two groups was supplemented with the fibrolytic enzyme immediately after parturition up to 100 post partum. The experiment was of two phases with 50 days each. The enzyme, which has a cellulase/hemicellulase activity (derived from Trichoderma group), was added to the concentrate part of the ration in a dry powder form. Milk production, 3.5% fat corrected milk, energy corrected milk were higher (p<0.05) for cows fed treated diet. At the same time, No differences were observed in percentages of milk components, feed intake, body weight, body weight change, or rectal temperature for the whole experimental period or during any of the two phases. Efficiency of milk production was higher (p<0.05) for treatment group cows than for that of the control ones. However, efficiency was better during the second phase than during the first phase. Feeding enzyme treated diets to dairy cows improved lactational performance during early 100 day of the lactation period. However, the first 50 days of lactation looked to be the critical.

• Animal Bioscience
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• 제34권1호
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• pp.66-73
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• 2021

Objective: Soy sauce oil, a byproduct of whole soybean processing by the soy sauce industry, was evaluated as a source of linoleic acid for dairy cows for the purpose of manipulating the composition of milk. Methods: Eight dairy Holstein cows fitted with rumen cannulas were used for ruminal administration of soy sauce oil for a 28-day period using a 4×4 Latin square study design with 4 doses (0, 200, 400, and 600 g soy sauce oil/d). Results: Although dry matter intake and milk yield were not affected by soy sauce oil administration, ruminal concentrations of total volatile fatty acids and acetate were decreased, specifically at 600 g/d administration. While milk fat percentage was decreased with administration of soy sauce oil, proportions of linoleic, vaccenic and conjugated linoleic acids in the rumen, blood and milk were increased with increasing soy sauce oil dose. Conclusion: These results suggest that soy sauce oil feeding could be useful for improving milk functionality without adverse effects on animal production performance when fed at less than 400 g/d.

• Animal Bioscience
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• 제35권2_spc호
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• pp.356-363
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• 2022

This paper is a review of some experiments using black soldier fly (BSF) and its by-product to explore their nutritional value, production potential in Indonesia and its application in the ration of ruminants. Evaluation on the effect of milk replacer, creep feed containing BSF, BSF frass and the possibility to use lactic acid bacteria from BSF as probiotics are presented. Utilization of BSF larvae in milk replacer as skim and cream milk substitute showed that there were similarity on physiological, hematological status and performance of goat kids compared to those offered goat milk or commercial milk replacer. In addition, BSF larvae can be used to substitute soybean meal in the creep feed for post weaning goat kids without any differences in weight gain and blood profiles. However, utilization of BSF frass in the fattening goat ration resulted lower digestibility of dry matter and organic matter due to the chitin content in the frass. Black soldier fly larvae grown on chicken manure harbour lactic acid bacteria (LAB) which have potential as probiotics for ruminants. In general, BSF larvae has potential as ingredient for milk replacer, creep feed, fattening ration, and source of LAB for probiotics.

• 한국식품과학회지
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• 제28권4호
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• pp.638-643
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• 1996

두유 공장의 부산물로 생산되는 두유박의 효율적인 탈수 방법을 개발하기 위하여 유기산 첨가에 의한 pH 조절, 압착조건, ohmic heating 등이 탈수 효과에 미치는 영향을 연구하였다. 두유박 시료의 pH를 유기산을 이용하여 $3.5{\sim}7.0$ 범위에서 조절하였을 때 대두 단백질 등전점인 pH 4.5근방에서 탈수 효과가 가장 우수하여 함수율 $70{\sim}72%$까지 탈수되었으며, 압착액의 고형분 함량은 3%까지 현저히 감소하였으며, 여과포로부터의 박리성도 향상되었다. Acetic acid로 두유박의 pH를 4.5로 조절한 후 압착했을 때 압착 압력이 $10kg/cm^{2}$일 때 수분 함량은 $69%$까지 감소되었으며, 그 이상의 압착압력에서는 일정하였다. 생두유박의 pH를 acetic acid로 4.5로 조절한 후 60V, 60㎐의 교류전류를 통하면서 $5kg/cm^2$의 압력으로 10분간 압착했을 때 수분함량은 63%까지 탈수되었으며, 탈수시간도 단축되었다. 또한 우수한 탈수효과 이외에도 Joule열에 의해 중심부 온도가 $95{\sim}100^{\circ}C$까지 상승하므로 살균 효과도 거둘 수 있어 저장성이 현저히 증가하였다.

• Food Science and Biotechnology
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• 제16권4호
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• pp.509-514
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• 2007

In this study, we optimized the production of ${\gamma}-polyglutamic$ acid (PGA) in soybean milk cakes (SMC) fermented with Bacillus subtilis GT-D and B. subtilis KU-A, to be utilized as a functional food ingredient. PGA production was dependent upon the glutamate content, fermentation time, and type of Bacillus sp. The consistencies of the SMCs fermented by B. subtilis GT-D and B. subtilis KU-A were highest after 36 hr of fermentation, and then decreased gradually. The SMC fermented by B. subtilis KU-A had a higher consistency than the SMC fermented by B. subtilis GT-D. In the presence of 10% defatted soy flour (DFS), 5% glutamate in the SMC was efficiently converted into polyglutamic acid (PGA) for 24 hr, indicating a conversion yield above 96%, but its conversion then decreased with higher concentrations of glutamate. The soluble solid content (mucilage) of the SMC fermented with B. subtilis KU-A was 9.5%(w/w), and composed of 65.6% PGA (Mw 1,536 kDa) and some polysaccharides. However, the SMC fermented with B. subtilis GT-D had a mucilage content of 7.8%(w/w), and was composed of 66.4% PGA (Mw 1,409 kDa), 11.5% levan, and some polysaccharides. The viscoelastic values of the mucilage obtained using B. subtilis KU-A were much higher than those of mucilage obtained using B. subtilis GT-D. Also, the G'-value (elastic modulus) was higher than the G"-value (viscous modulus).

• 동아시아식생활학회지
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• 제17권2호
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• pp.164-182
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• 2007

The purpose of this study was to investigate the stress and effects of stress on dietary habits, food preferences and food frequencies of young children in Kyungbuk province. The study subjects were 271 children, aged $3\sim5$, and attending child care centers within the Kyungbuk area. The general characteristics, dietary habits, stress, food preferences, and food frequencies of the young children were assessed, as were the general characteristics of their parents. The results were analyzed using $\chi^2-or$ t-tests employing the SPSS program package. The subjects were classified into two groups according their level of stress. One hundred and nine of the subjects had high stress(HS) and 162 had low stress(LS). The male HS group ate breakfast more regularly, skipped meals more frequently and ate protein-containing foods everyday compared to the male LS group. The female HS caught colds more easily and were more constipated than the female LS group. The preferences for chicken and hamburgers were higher in the male HS group than LS group; whereas, those for noodles and soybean milk were lower in the male HS than LS group. The preferences for soybean milk was higher in the female HS than LS group. The frequencies for stir-fried foods and spinach were higher in the male HS than LS group; whereas, those for curried rice, noodles, apples and soybean milk were higher in the male LS than HS group. The frequency for kimbab was higher in the female HS than LS group; whereas, those for steamed foods, shells and mushrooms were lower in the female HS than LS group. Therefore, our results suggest that young children, as well as their parents, need better dietary habits and strategies for actively coping with stress to maintain health.

• Asian-Australasian Journal of Animal Sciences
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• 제24권6호
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• pp.800-809
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• 2011

The objective of this study was to investigate the effects of different ratios of corn silage (CS): alfalfa hay (AH), and extruded soybeans (ESB) on milk yield, milk composition, blood metabolites, and fatty acids in milk fat and plasma. Ninety multiparous Holstein cows were arranged in a randomized block design experiment which lasted 14 weeks. Treatments were arranged as a $3{\times}3$ factorial with 0%, 5% or 10% ESB (dry matter basis) and three forage treatments: I) 30% CS, 10% AH and 10% Leymus chinense hay (LC); ii) 20% corn silage, 20% alfalfa hay and 10% LC; iii) 10% CS, 30% AH and 10% LC. Cows were allowed to consume a total mixed ration ad libitum. There was no change of dry matter intake when cows were fed the experimental diets. As more AH was added to the diets, milk yield, milk protein content and yield, and trans9, cis11-conjugated linoleic acids (CLA) concentrations in milk fat and plasma increased. When ESB were supplemented to the diets, milk yield, and trans9, cis11-CLA concentration in milk fat and plasma increased. When 10% ESB was added to the diet containing 30% AH the trans9, cis11-CLA content (1.46 g/100 g of total fatty acids) in milk was the highest among all treatments. These results suggests that AH could replace part of a CS diet and be a good forage source of diet for dairy cows to improve milk yield and milk composition. Meanwhile, ESB could be included in the diet with high AH to improve production performance of dairy cows.