Age and weight at first mating affects plasma leptin concentration but no effects on reproductive performance of gilts

( Suhyup Lee ),( Abdolreza Hosseindoust ),( Yohan Choi ),( Minju Kim ),( Kwangyeol Kim ),( Junhyung Lee ),( Younghwa Kim ),( Byungjo Chae ) 한국축산학회 2019 한국축산학회지 Vol.61 No.5

The objective of this study was to verify the best mating age of gilts at the first parity. Gilts (n = 86) were divided into nine groups in a factorial arrangement with three Ages (AG1, ≤ 220 d; AG2, 220 to 240 d; AG3, 240 ≤ d), and three weights (WT1 ≤ 140 kg; WT2, 140 to 149 kg; WT3, 150 ≤ kg). A higher body weight gain in AG2 sows during gestation. Sows in AG2 group showed a higher body weight gain at first parity and backfat gain in the parity 2 and 3 during gestation. A greater insulin-like growth factor-1 (IGF-1) was observed in AG1 sows compared with AG3 sows at weaning in the second parity. Sows in WT1 group showed a significant positive effect on the plasma IGF-1 at breeding and weaning time in parity 2. Sows in AG3 group showed a higher plasma leptin at breeding, farrowing, and weaning in the parity 1, and at farrowing in parity 2. Sows in WT3 group showed a higher plasma leptin at breeding, farrowing, and weaning in the parities 1 and 2. Considering the insignificant longevity results, the most efficient time for gilts insemination can be at 220 d when their body weight is 140 kg or lower

RESEARCH : Open Access ; Comparative ileal amino acid digestibility and growth performance in growing pigs fed different level of canola meal

( Kwangyeol Kim ),( Akshat Goel ),( Suhyup Lee ),( Yohan Choi ),( Byung Jo Chae ) 한국동물자원과학회(구 한국축산학회) 2015 한국축산학회지 Vol.57 No.21

The digestibility of different vegetable protein sources were investigated and the effects of supplementing canola meal (CM) as partial inclusions were studied in growing pigs, to determine the performance parameters and its economic importance. In Exp. 1, four pigs (average initial BW = 15.4 ± 0.35 kg, 5 weeks of age) fitted with simple T-cannula at terminal ileum, were fed four diets following repeated 4 × 4 Latin square design having adoption period of 7 days. Diet 1 was Nitrogen free diet containing corn starch. Diets 2, 3, and 4 were the basal diet supplemented with soybean meal (SBM), rapeseed meal (RSM), and domestic CM respectively. The AID of crude protein was decrease in RSM in comparison to SBM supplementation. The AID of Dietary indispensable amino acids (DIAA) such as Lys, Meth, Pha, and dispensable amino acid Ala, Pro, Asp were decreased (P < 0.05) in RSM supplemented diets. The SID of DIAA does not differ but the SID of Asp was higher (P < 0.05) in RSM and CM diets while SID of Pro was lower (P < 0.05) in RSM in comparison to SBM supplemented diets. In Exp. 2, 192 growing pigs (average initial BW 24.76 ± 2.55 kg) were randomly allotted to four dietary treatments with increasing levels of CM i.e. 0, 3.75, 7.50, and 11.25 % respectively. Diets were fed in meal form for 35 days. Increasing CM levels in diets had no effects (P > 0.05) on growth performance and apparent total tract digestibility (ATTD) of nutrients and energy. Total weight gain, total feed intake, and feed cost per kg weight gain were not affected by increasing levels of CM in diets but total feed cost (TFC) per pigs was linearly reduced (26.463 to 25.674; P < 0.05). Broadly, the AID, and SID of amino acid was reduced in RSM but was not effected in CM in comparison to SBM supplemented pigs. Moreover, increasing levels of CM in pigs diet had no effect on the ATTD and performance but TFC per pig was reduced. Thus CM inclusion of up to 11.25 % in diets can be used for reducing the production cost in growing pigs without any negative effect.

ERRATUM : Open Access ; Erratum to: Comparative ileal amino acid digestibility and growth performance in growing pigs fed different level of canola meal

( Kwangyeol Kim ),( Akshat Goel ),( Suhyup Lee ),( Yohan Choi ),( Byung-jo Chae ) 한국동물자원과학회(구 한국축산학회) 2015 한국축산학회지 Vol.57 No.43

Comparative ileal amino acid digestibility and growth performance in growing pigs fed different level of canola meal

Kim, Kwangyeol,Goel, Akshat,Lee, Suhyup,Choi, Yohan,Chae, Byung-Jo Korean Society of Animal Science and Technology 2015 한국축산학회지 Vol.57 No.6

The digestibility of different vegetable protein sources were investigated and the effects of supplementing canola meal (CM) as partial inclusions were studied in growing pigs, to determine the performance parameters and its economic importance. In Exp. 1, four pigs (average initial $BW=15.4{\pm}0.35kg$, 5 weeks of age) fitted with simple T-cannula at terminal ileum, were fed four diets following repeated $4{\times}4$ Latin square design having adoption period of 7 days. Diet 1 was Nitrogen free diet containing corn starch. Diets 2, 3, and 4 were the basal diet supplemented with soybean meal (SBM), rapeseed meal (RSM), and domestic CM respectively. The AID of crude protein was decrease in RSM in comparison to SBM supplementation. The AID of Dietary indispensable amino acids (DIAA) such as Lys, Meth, Pha, and dispensable amino acid Ala, Pro, Asp were decreased (P < 0.05) in RSM supplemented diets. The SID of DIAA does not differ but the SID of Asp was higher (P < 0.05) in RSM and CM diets while SID of Pro was lower (P < 0.05) in RSM in comparison to SBM supplemented diets. In Exp. 2, 192 growing pigs (average initial BW $24.76{\pm}2.55kg$) were randomly allotted to four dietary treatments with increasing levels of CM i.e. 0, 3.75, 7.50, and 11.25 % respectively. Diets were fed in meal form for 35 days. Increasing CM levels in diets had no effects (P > 0.05) on growth performance and apparent total tract digestibility (ATTD) of nutrients and energy. Total weight gain, total feed intake, and feed cost per kg weight gain were not affected by increasing levels of CM in diets but total feed cost (TFC) per pigs was linearly reduced (26.463 to 25.674; P < 0.05). Broadly, the AID, and SID of amino acid was reduced in RSM but was not effected in CM in comparison to SBM supplemented pigs. Moreover, increasing levels of CM in pigs diet had no effect on the ATTD and performance but TFC per pig was reduced. Thus CM inclusion of up to 11.25 % in diets can be used for reducing the production cost in growing pigs without any negative effect.

영문지(JAST) 게재노문 국문초록 : 돼지에서의 캐놀라박 아미노산 화장소화율과 첨가수준에 따른 사양성적 비교

김광열 ( Kesngyeol Kim ),( Aksat Goel ),이수협 ( Suhyup Lee ),최요한 ( Yohan Choi ),채병조 ( Byung Jo Chae ) 한국동물자원과학회(구 한국축산학회) 2015 축산기술과 산업 Vol.6 No.3

본 연구는 식물성 단백질 공급원으로써 국산 캐놀라박 첨가수준에 따른 아미노산 회장소화율, 사양성적, 양양소소화 율 및 경제성에 미치는 영향을 알아보기 위하여 실시되었다. 시험 1. 대두박, 채종박 및 국산 캐놀라박의 아미노산 회장소화율을 측정하기 위해 T-cannula 를 설치한 지돈(15.4±0.35kg, 5주령) 4두를 공시하여 4×4 라틴스퀘어 설계법을이용해 회장내용물을 채취하여 측정하였다. 각 원료에 대한 아미노산 회잔소화율을 측정하기 위하여 무질소사료(N-Free)와 공급원으로 대두박(SBM), 채종박(RSM) 및 국산 캐놀라박(CM)만을 사용한 기본사료를 급여하였다. 외관상 회장소화율(AID)의 결과는 조단백질에서 채종박이 유의적으로 낮게 나타났으며(p<0.05)필수 아미노산의lysine, methionine, phenylanine과 비필수 아미노산의 alanine, aspartic acid, proline에서 유의적으로 낮게 나타났다(p<0.05). 표준 회장소화율(SID)의 결과는 대두박, 채종박과 캐놀라박을 비교하여 필수 아미노산의 유의적인 차이는 나타나지 않았다(p>0.05). 그러나 채종박의 비필수 아미노산에서 aspartic acid 유의적으로 높게 나타났으며(p<0.05), proline 에서는 대두박이 유의적으로 높게 나타났다(p<0.05). 시험 2. 배합사료 원료로서 국산 캐놀라박의 가치를 평가하기 위한여 육성돈 (24.76±2.55kg) 192두를 공시하여 4처리 4반복, 반복당 12두씩 완전임의 배치하였다. 처리구는 기본사료(basal diet)에 0%, 3.75%, 7.50% 및 11.25%의 캐놀라박을 첨가하였으며, 시험은 35일간 실시하였다. 캐노라박 첨가수준에 따른 사양성적 및 양앵소소화율에서 유의적인 차이는 나타나지 않았다(p>0.05). 첨가수준이 증가함에 따라 총 증체량, 총 섭취량 그리고 kg당 증체사료비에서 유의적인 차이는 나타나지 않았다(p>0.05). 그러나 총 사료비에서는 캐놀라박 첨가량이 증가함에 따라 유의적으로 낮아지는 것으로 나타났다(26.463 to 25.674; p<0.05). 결과를 종합해보면, AID과 SID에서 채종박이 전체적으로 낮게 나타났으며,대두박과 캐놀라박은 유사한 것으로 나타났다. 또한, 캐놀라박 텀가수준이 증가함에 따라 사양성적이나 영양소소화율에서는 아무런 영향이 없었다. 하지만 총 사료비에서는 감소하는 것으로 나타났다. 따라서 캐놀라박의 첨가수준을 11.25%까지 급여하여도 사양성적이나 영양소소화율의 감소 없이 생산비용을 줄이기 위해 사용할 수 있을 것으로 판단된다.

The Ratio of Dietary n-3 Polyunsaturated Fatty Acids Influences the Fat Composition and Lipogenic Enzyme Activity in Adipose Tissue of Growing Pigs

Chang Hyun Song,Seung Min Oh,SuHyup Lee,YoHan Choi,Jeong Dae Kim,Aera Jang,JinSoo Kim 한국축산식품학회 2020 한국축산식품학회지 Vol.40 No.2

Currently, there is a growing interest among consumers in selecting healthier meat with a greater proportion of essential fatty acids (FA). This experiment was conducted to evaluate the role of different ratios of dietary n-6:n-3 on growth performance, FA profile of longissimus dorsi (LD), relative gene expression of cytokines, meat quality, and blood parameters in finishing pigs. A total of 108 finishing pigs was randomly allotted to three treatments including a control (basal diet) and low ratios (4:1 and 2:1) of n-6:n-3. The 4:1 and 2:1 diets decreased the overall stearic acid in LD. There were reductions in the content of stearic acid, palmitoleic acid, total saturated acid, and n-6:n-3 ratio of LD in pigs fed 4:1 and 2:1 diet compared with the control diet. The 4:1 and 2:1 diets increased the concentration of α-Linolenic acid and polyunsaturated FA in the LD of pigs. Acetyl-CoA carboxylase enzyme gene was down-regulated in pigs fed 2:1 diet compared with finishing pigs fed the control or 4:1 diets. The relative expression of hormonesensitive lipase was increased in pigs fed 2:1 and 4:1 ratio diets. Lower total cholesterol of plasma was observed in finishing pigs fed 2:1 and 4:1 diets. The cooking loss ratio of meat was lower in pigs fed the 2:1 and 4:1 diets compared with the control diet. Pigs fed the 4:1 and 2:1 diets had greater final body weight. In conclusion, the 2:1 and 4:1 diets have the potential to increase the meat quality and growth performance of pigs.

Effects of Ecklonia cava as fucoidan-rich algae on growth performance, nutrient digestibility, intestinal morphology and caecal microflora in weanling pigs

Choi, Yohan,Hosseindoust, Abdolreza,Goel, Akshat,Lee, Suhyup,Jha, Pawan Kumar,Kwon, Ill Kyong,Chae, Byung-Jo Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.1

Objective: In the present study, role of increasing levels of Ecklonia cava (seaweed) supplementation in diets was investigated on growth performance, coefficient of total tract apparent digestibility (CTTAD) of nutrients, serum immunoglobulins, cecal microflora and intestinal morphology of weanling pigs. Methods: A total of 200 weaned pigs (Landrace${\times}$Yorkshire${\times}$Duroc; initial body weight $7.08{\pm}0.15kg$) were randomly allotted to 4 treatments on the basis of body weight. There were 5 replicate pens in each treatment including 10 pigs of each. Treatments were divided by dietary Ecklonia cava supplementation levels (0%, 0.05%, 0.1%, or 0.15%) in growing-finishing diets. There were 2 diet formulation phases throughout the experiment. The pigs were offered the diets ad libitum for the entire period of experiment in meal form. Results: The pigs fed with increasing dietary concentrations of Ecklonia cava had linear increase (p<0.05) in the overall average daily gain, however, there were no significant differences in gain to feed ratio, CTTAD of dry matter and crude protein at both phase I and phase II. Digestibility of gross energy was linearly improved (p<0.05) in phase II. At day 28, pigs fed Ecklonia cava had greater (linear, p<0.05) Lactobacillus spp., fewer Escherichia coli (E. coli) spp. (linear, p<0.05) and a tendency to have fewer cecal Clostridium spp. (p = 0.077). The total anaerobic bacteria were not affected with supplementation of Ecklonia cava in diets. Polynomial contrasts analysis revealed that villus height of the ileum exhibited a linear increase (p<0.05) in response with the increase in the level of dietary Ecklonia cava. However, villus height of duodenum and jejunum, crypt depth, villus height to crypt depth ratio of different segments of the intestine were not affected. Conclusion: The results suggest that Ecklonia cava had beneficial effects on the growth performance, cecal microflora, and intestinal morphology of weanling pigs.

속보 운동시간이 제주교잡마의 혈액학 및 혈액화학치에 미치는 효과

양재혁 ( Jaehyuk Yang ),박용수 ( Yong-soo Park ),이수협 ( Suhyup Lee ),정기화 ( Ki-hwa Chung ) 한국축산학회 2021 동물자원연구 Vol.32 No.3

본 연구는 국내 승용마로 가장 많이 이용되는 제주교잡마(14.1±1.4세, 거세)의 운동시간이 혈액학과 혈액화학치에 미치는 영향을 평가하기 위하여 실시하였다. 속보 운동 시간에 따라 바이탈 사인과 스트레스 연관된 cortisol 및 lactic acid를 포함한 총 28가지 항목을 검사하였다. 바이탈 사인 중에서 심박수(평균 38.0→81.0회/분)와 호흡수(평균 11.7→35.7회/분)는 운동 전에 비하여 운동 30분에 유의하게 증가하였다(p<0.05). 그러나 체온은 운동 전후에 차이가 없었다. 혈액학 조사 결과 white blood cell(8.03→9.52×10³cells/μL), red blood cell(5.94×10³→7.23-7.32×10³cells/μL), hemoglobin(11.82→14.65-14.78g/dL) 및 hematocrit(25.04→30.27%) 수치는 운동 전에 비하여 운동 30분에 유의하게 증가하였다(p<0.05). 혈액화학치 조사 결과 알부민(3.25→3.47g/dL)만이 유의하게 증가하였다(p<0.05). 그러나, Na⁺, K⁺, Ca²⁺, total CO₂, creatine kinase, glucose, blood urea nitrogen, creatinine, aspartate transaminase, total bilirubin, gamma-glutamyl transpeptidase 및 total plasma protein 수준은 차이가 없었다. 한편 cortisol 및 lactic acid 수준도 운동 전과 운동 30분에 유의한 차이는 없었다. 이상의 결과를 종합하면, 제주 교잡마에서 30분간 속보 운동은 운동에 의한 스트레스를 받지 않으므로, 승마의 안전성과 동물복지 측면에서 문제가 없을 것으로 판단된다. This study analyzed the effect of time of trot on hematology and blood chemistry values of the Jeju Pony crossbreed horses that are commonly used for riding (14.1±1.4 years old, Gelding). A total of 28 parameters including vital signs as well as stress hormones such as cortisol and lactic acid levels were examined as the time of the trot exercise progressed. Vital signs such as heart rate (38.0→81.0 times/min) and respiratory rate (11.7→35.7 times/min) increased significantly within 30 minutes of exercise. However, difference in the body temperature was not observed before and after exercise. The hematology including white blood cell count (8.03→9.52×10³ cells/μL), red blood cell count (5.94×10³→7.23-7.32×10³ cells/μL), hemoglobin levels (11.82→14.65-14.78 g/dL), and hematocrit levels (25.04→30.27%) significantly increased 30 minutes after the start of the exercise (p<0.05). The blood chemistry value of albumin (3.25→3.47 g/dL) (p<0.05) only showed a significant increase after the exercise. However, the other blood chemistry levels such as, Na⁺, K⁺, Ca²⁺, total CO₂, creatine kinase, glucose, blood urea nitrogen, creatinine, aspartate transaminase, total bilirubin, gamma-glutamyl transpeptidase, and total plasma protein did not change. Also, cortisol and lactic acid levels did not show significant difference. The middle-aged Jeju pony crossbreed horses were not stressed by the 30-minute exercise; therefore, it can be concluded that there is no problem regarding the safety of both the rider and the animal.

The microbial pH-stable exogenous multienzyme improved growth performance and intestinal morphology of weaned pigs fed a corn-soybean-based diet

Kim, JinSoo,Shim, YoungHo,Ingale, Santosh Laxman,Hosseindoust, Abdolreza,Lee, SuHyup,Rathi, Piyush Chandrakant,Choi, YoHan,Kim, MinJu,Chae, ByungJo Informa UK (TaylorFrancis) 2018 Journal of applied animal research Vol.46 No.1

Effect of wild ginseng on the laying performance, egg quality, cytokine expression, ginsenoside concentration, and microflora quantity of laying hens

Habeeb Tajudeen,문준영,Sang Hun Ha,Abdolreza Hosseindoust,Suhyup Lee,김진수 한국축산학회 2023 한국축산학회지 Vol.65 No.2

The experiment was carried out to study the effect of Korean wild ginseng adventitious root supplementation on the laying performance, egg quality, cytokine expression, ginsenoside concentration, and microflora quantity of Institut de selection Animale (ISA) brown laying hens at 24 weeks old. A total of 90 laying hens were subjected to a completely randomized design at three treatments, five repetitions and six laying hens per replicate. The experiments were divided by diets into the basic feed (CON), basic feed + 0.1% wild ginseng (WG1), and basic feed + 0.5% wild ginseng (WG2). The feeding trial was carried out over a duration of 12 weeks after an initial acclimation period of 2 weeks. Feeds and water were administered ad libitum in mash form, and light was available for 16 hours per day. At the end of study, henday egg production (HDEP), average egg weight (AEW), and egg mass (EM) were increased (p <0.05) in WG2 at week 12. Feed conversion ratio (FCR) was decreased (p < 0.05) in WG2 at week 12. The ginsenoside content in egg yolk was increased (p <0.05) in laying hens in the WG2 treatment at week 12. Relative expression of tumor necrosis factor alpha (TNF-α) was reduced (p < 0.05) in the WG supplemented diets at week 12. The fecal microflora quantity of Lactobacillus was increased (p < 0.05) in WG2 at week 8 to week 12, and Escherichia coli (E. coli) was significantly decreased (p < 0.05) in the WG2 at week 12. We concluded that the result observed in the HDEP, AEW, EM and FCR was due to an increase in ginsenoside content, leading to an improvement in the TNF-α, and fecal microflora quantity such as Lactobacillus and E. coli in the WG2 supplemented diets. We therefore recommend the use of WG at application level 0.5% per basal diet for optimum laying performance in layer hens.