• Asian-Australasian Journal of Animal Sciences
• /
• v.7 no.4
• /
• pp.583-589
• /
• 1994

In order to study the interrelationships of calcium (0.45 vs. 0.90%), phosphorus (0.40 vs. 0.70%) and protein (17, 20, 23%), $2{\times}2{\times}3$ factorial design was employed. A total of 480 broilers (Hisex-Hibro) aged 3 days were fed the experimental diets for a period of 28 days. Body weight gain, daily feed intake and feed efficiency were investigated for the simple effects, first order interaction and second order interaction of the dietary factors. These effects were also applied to bone ash retention, percent Ca in bone & ash, percent P in bone & ash, and protein utilizability. Results were as follows. 1) For body weight gain, simple effects of dietary levels of Ca, P, CP were found to be significant (p<0.05). Body weight gain at 0.90% Ca level was improved as the dietary CP levels increased. For the feed intake, single effects of dietary levels of both P and CP were found (p<0.05). Feed efficiency was improved as the dietary CP and P levels increased. Ca $\times$ P interaction was found to be significant for body weight gain, feed intake and feed efficiency (p<0.05), however, Ca $\times$ P $\times$ CP interaction effect was not found. 2) Protein utilizability decreased as the dietary CP level increased (p<0.01). 3) 0.90% Ca in diet showed less bone ash retention than 0.45% Ca level. And, increasing the dietary P level resulted in increased bone ash retention. Increasing the dietary P level resulted in increased bone Ca retention (p<0.01) and increased bone P retention (p<0.05). Dietary CP levels had significant (p<0.01) effect on bone Ca retention except for 23% CP level. Increasing the dietary Ca level resulted in wider Ca:P ratio of bone, but increasing the dietary P level resulted in narrower Ca:P ratio of bone. 4. Ca $\times$ P interaction effects were found to be significant (p<0.01) for bone ash, bone Ca & P, ash P content, and bone Ca:P ratio. Ca $\times$ P $\times$ CP interaction effects were found for bone ash (p<0.01), bone Ca (p<0.05) and bone P content (p<0.01).

• Proceedings of the Korea Society of Poultry Science Conference
• /
• 2000.11a
• /
• pp.102-105
• /
• 2000

These studies were conducted to investigate the effect of dietary supplemental lincomycin at different food waste supplements on performance of broiler chicks. Diets were based corn, soybean meal and contained 3,100kcal/kg ME, 21% CP for the rest two weeks. Three levels of dietary lincomycin(LM; 0,2.2, 4.4mg/kg) and food waste(FW; 0, 7.5, 15%) were respectively inclusion in both experiments. In experiment 1, weight gain of birds fed 4.4mg/kg LM was significantly higher than no LM treatments(P<0.05). It tended to increase in 7.5% food waste treatment compared to that of control, but was not significantly different. FCR of chicks fed 2.2mg/kg LM supplement was significantly improved compared to that of other treatments Chicks fed food waste showed inferior FCR to control as dietary FW level increased(P<0.05). There was no significance in blood components among treatments. In experiment 2, weight gain of chicks fed 15% FW exhibited higher weight gain than that of other treatments. As FW supplement increased, the feed intake increased significantly(P<0.05) There was no significance in blood components except serum calcium. The results of these experiments indicated that hicks fed 4.4mg/kg LM supplements maximized growth rate of all treatments, and improved FCR in 2.2mg/kg LM.

• The Korean Journal of Physiology
• /
• v.11 no.1
• /
• pp.33-36
• /
• 1977

The object of the present study is to examine the effect of physical training during early growth of life on body weight gain and physical performance. Early weaned (2 weeks after birth) male mice were divided into control and training group-and experimental period was divided into growing period (from 1st week to 6th weeks after weaning) and adult period (from 7th weeks to 9th weeks after weaning). Physical training was. given on a small animal treadmill with a speed of 34.3m/min and $19^{\circ}C$ slope and both groups of body weight gain and maximal running time on the treadmill were determined. The results obtained are summarized as follows; 1. Body weight gain was lesser in training group than control group and the difference was. statistically significant at 1, 2.5, 5.7 weeks of training period. 2. Maximal running time of training group was found to be longer than that of control group at 6th (p<0.01), 8th (p<0.001) and 9th weeks. (p<0.01). From the above results, it may be concluded that if physical training is started in early growth of life, there might be an improvement of physical performance.

• Asian-Australasian Journal of Animal Sciences
• /
• v.26 no.1
• /
• pp.97-107
• /
• 2013

The aim of this study was to establish relationships between chemical and physical parameters of wheat with performance and digestibilities of feed components in broiler chickens fed on wheat-based diets. Ninety-four wheat samples were selected for inclusion in four bird trials. Birds were housed in individual wire metabolism cages from 7 to 28 d and offered water and feed ad libitum. Dry matter intake (DMI), liveweight gain (LWG) and gain:feed were measured weekly. A balance collection was carried out from 14 to 21 d for determination of apparent metabolizable energy (AME), ME:gain, dry matter retention, oil and neutral detergent fibre (NDF) digestibility. At 28 d the birds were humanely killed, the contents of the jejunum removed for determination of in vivo viscosity and the contents of the ileum removed for determination of ileal dry matter, starch and protein digestibility. When wheat parameters were correlated with bird performance data, it was found that specific weight was not significantly (p>0.05) related to bird performance. Bird DMI, LWG and gain:feed were best correlated (p<0.05) with the rate of starch digestion, although the coefficients of correlation (r) were still low (0.246 to 0.523). A negative relationship (p<0.01) between AME and total (r = -0.432) and soluble (r = -0.304) non starch polysaccharide (NSP) was observed in this study. Thousand grain weight (TG) was positively correlated with DMI (r = 0.299), LWG (r = 0.343) and gain:feed (r = 0.371). When establishing multiple regression relationships, correlation coefficients greater than 0.8 were achieved for DMI, LWG, gain:feed and ileal crude protein digestibility. However, the economics involved in determining the parameters involved in the regressions make the process impractical.

• Nutrition Research and Practice
• /
• v.7 no.5
• /
• pp.352-358
• /
• 2013

Korean pine nut oil (PNO) has been reported to have favorable effects on lipid metabolism and appetite control. We investigated whether PNO consumption could influence weight gain, and whether the PNO-induced effect would result in an improvement of immune function in high-fat diet (HFD)-induced obese mice. C57BL/6 mice were fed control diets with 10% energy fat from either PNO or soybean oil (SBO), or HFDs with 45% energy fat from 10% PNO or SBO and 35% lard, 20% PNO or SBO and 25% lard, or 30% PNO or SBO and 15% lard for 12 weeks. The proliferative responses of splenocytes upon stimulation with concanavalin A (Con A) or lipopolysaccharide (LPS), Con A-stimulated production of interleukin (IL)-2 and interferon (IFN)-${\gamma}$, and LPS-stimulated production of IL-6, IL-$1{\beta}$, and prostaglandin $E_2$ ($PGE_2$) by splenocytes were determined. Consumption of HFDs containing PNO resulted in significantly less weight gain (17% less, P < 0.001), and lower weight gain was mainly due to less white adipose tissue (18% less, P = 0.001). The reduction in weight gain did not result in the overall enhancement in splenocyte proliferation. Overall, PNO consumption resulted in a higher production of IL-$1{\beta}$ (P = 0.04). Replacement of SBO with PNO had no effect on the production of IL-2, IFN-${\gamma}$, IL-6, or $PGE_2$ in mice fed with either the control diets or HFDs. In conclusion, consumption of PNO reduced weight gain in mice fed with HFD, but this effect did not result in the overall improvement in immune responses.

• Korean Journal of Poultry Science
• /
• v.28 no.1
• /
• pp.61-67
• /
• 2001

Two experiments were conducted to evaluate the dietary supplemental fruit extract(Bio-plus) on performance and intestinal microflora of broiler chicks. Seven treatments were allocated into control, 0.05, 0.10, 0.20, 0.10, 0.20, 0.40, 0.80, 1.60% with four replications for five weeks, in both experiments. Diets contained 21.5% CP, 3, 100 kcal/kg ME for the rest two weeks. Weight gain, feed intake, feed conversion ratio(FCR) were weekly measured. Birds were sacrificed to examine the E. coli and Salmonella from cecum and ileum at the end of experiment. In experiment 1, Weight gain of Bio plus treatments tended to increase compared to that of control, but was not consistency between them. Chicks fed Bio-plus showed significantly lower feed conversion ratio(FCR) than control(P〈0.05). In experiment 2, Weight gain of Bio plus treatments was significantly different from control(P〈0.05) for starting period and linearly increased upto 0.80% for the rest of two weeks, but was not significantly different. Feed intake of chicks fed Bio-plus tended to be higher than control. Bio-plus treatments was not statistically different FCR from control. ND titer showed no significance, but tended to be higher in Bio-plus treatments than control. The number of ileum salmonella was significantly decreased in Bio-plus treatments compared to that of control in expt 2 (P〈0.05). Total yeast and Lactobacillus spp. of illeum tended to increase in expt 1 and were significantly higher in expt 2 than control(P〈0.05). The results of these experiment indicated that dietary Bio-plus supplements increased weight gain, the number of ileum yeast and Lactobacillus spp. of broiler chicks.

• Korean Journal of Clinical Pharmacy
• /
• v.28 no.3
• /
• pp.204-215
• /
• 2018

Background: In this systematic review and meta-analysis, the effect of metformin on weight loss was assessed to determine whether metformin should be recommended for the prevention or treatment of weight gain in patients receiving antipsychotic medication for the treatment of schizophrenia or schizoaffective disorder. Methods: The PubMed, Embase, and Cochrane Library databases were searched for all published randomized controlled trials (RCTs) from inception to June 2018. In addition, the references of relevant articles were also examined. Using Review Manager 5, the pooled estimates of the weighted mean difference (WMD) of the changes in body weight and body mass index (BMI) and the corresponding 95 % confidence intervals (CIs) were calculated. Results: The meta-analysis included 15 RCTs. The pooled analysis showed that compared with placebo, metformin led to significant reductions in body weight (WMD: -2.09, 95% CI: -2.59, -1.60; p<0.00001) and BMI (WMD: -0.90, 95% CI: -1.08, -0.72; p<0.00001). The effect of metformin on weight loss was greater in patients receiving olanzapine than in patients receiving clozapine (body weight, WMD: -2.39, 95% CI: -3.76, -1.02; p=0.0006 for olanzapine; -1.99, 95% C: -3.47, -0.51; p=0.009 for clozapine; BMI, WMD: -1.15, 95% CI: -1.74, -0.57, p=0.0001 for olanzapine; WMD: 0.76, 95% CI: -1.23, -0.28; p=0.002 for clozapine). Conclusion: Metformin can be recommended to manage olanzapine-induced weight gain in patients with schizophrenia or schizoaffective disorder. The magnitude of the reductionss in body weight and BMI implieds that the use of metformin to attenuate olanzapine-induced weight gain can minimize the risk of coronary heart disease.

• Journal of Animal Science and Technology
• /
• v.56 no.5
• /
• pp.20.1-20.5
• /
• 2014

An experiment was conducted to evaluate the effect of form and particle size of feed supplemented with L-threonine on growth performance, carcass characteristic and blood biochemical parameters of broiler chickens. The experimental design was a $2{\times}2{\times}2$ factorial arrangement of treatments evaluating two feed forms (pellet or mash), two feed particle sizes (fine or course), and two inclusion rates of dietary L-threonine (with or without) which adopted from 7 to 42 days of age. In this experiment, 360 a day old chicks in two sexes were assigned in each treatment and each experimental unit was included 15 chicks. Feed consumption and weight gain were measured weekly. At 35 days of age, blood samples were taken to analysis blood biochemical parameters. At the end of the experimental period, two birds were slaughtered in each treatment and carcass analysis was carried out. The results showed that the effect of feed form on body weight gain and feed intake in whole of experimental period was significant (P < 0.05). Broilers fed pelleted diets had more weight gain than the mash group. Growth performance parameters were not affected by feed particle size and dietary L-threonine supplementation in whole of experimental period (P > 0.05). The results of carcass analysis showed that liver and gizzard relative weights were influenced by feed form (P < 0.05). However, pancreas and liver relative weights were affected by feed particle size and dietary L-threonine supplementation, respectively (P < 0.05). Triglyceride and VLDL levels were affected by feed form and dietary L-threonine supplementation (P < 0.05). The effect of feed particle size on blood biochemical parameters was not significant (P > 0.05). In conclusion, the experimental results indicated that feed form increased feed consumption and weight gain in whole of experimental period (1 to 42 days of age) while feed particle size and dietary L-threonine had no effect on broiler performance.

• Journal of Veterinary Clinics
• /
• v.16 no.2
• /
• pp.332-338
• /
• 1999

This study was carried out to investigate weight gain and prevention of diarrhea in suckling calves which were injected with recombinant bovine somatopropin (rBST). A total of 101 breeding cows were assigned to the six groups according to the administered dosage and injected time, respectively. Groups T-1, T-3, T-4 and T-6 were injected starting 1 week before calving and groups T-2 and T-5 were injected on the calving day. The six groups were injected five times at two week intervals. Groups T-1 and T-2 were injected with 250mg composite rBST, Group T-3 was injected with 375 mg composite rBST. Groups T-4 and T-5 were injected with 500mg composite rBST, And group T-6 was injected with 500mg rBST-S. The control group was not injected with BST. The groups injected with 500 mg BrST had a lower rate of morbidity from diarrhea than the control group or the groups injected with 250 mg rBST (T-1 and T-2). Weight gain was higher in group T-4 than in the control group or groups T-1 and T-2. In Korean Native Cattle, the total weight gain was greater in group T-4 than in the control group (p<0.05). In crossbred cows, total weight gain was the highest in group T-4, and the total weight gain rate was greater than in group T-4 and the control group (p<0.05). The results of the hematological values showed that injections of rBST did not affect the level of the RBC, TP and BUN in the breeding cows at 9 weeks after postpartum or the neonatal calves. The results of this study indicate that injecting breeding cows with 500 mg rBST before calving would be effective in the preventing of diarrhea and in increasing weight gain of calves from birth to weaning.

• Korean Journal of Optics and Photonics
• /
• v.3 no.4
• /
• pp.252-257
• /
• 1992

In this study, InGaAsP/InP MQW-DH wafer was grown by a vertical type LPE system and 10$\mu$m stripe MQW-LD was fabricated with the wafer. The threshold current was about 200 mA and when the cavity length of the LD was 470$\mu$m the central wavelenth of gain spectra was 1.32$\mu$m the lasing wavelength was 1.302$\mu$m which corresponded to the gain center of the quantum well thickness of 300 $\AA$.