scholarly journals KẾT QUẢ CỦA MÔ HÌNH NUÔI GHÉP CÁ VƯỢC (Lates calcarifer) VỚI CÁ TRẮM ĐEN (Mylopharyngodon piceus) TRONG AO ĐẤT TẠI XÃ LẬP LỄ, HUYỆN THỦY NGUYÊN, THÀNH PHỐ HẢI PHÒNG

2020 ◽  
Vol 4 (2) ◽  
pp. 1951-1959
Author(s):  
Kim Văn Vạn ◽  
Trần Ánh Tuyết ◽  
Nguyễn Thị Diệu Phương
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Economic Efficiency ◽  
Stocking Density ◽  
Sea Bass ◽  
Total Body Weight ◽  
Average Growth ◽  
Black Carp ◽  
Total Body

Mô hình nuôi ghép cá Vược với cá Trắm đen được thực hiện từ tháng 3 năm 2018 đến tháng 2 năm 2019 tại 3 hộ gia đình ở xã Lập Lễ, huyện Thủy Nguyên, thành phố Hải Phòng. Mục tiêu của nghiên cứu nhằm xác định tốc độ tăng trưởng và tỷ lệ sống của cá Vược và cá Trắm đen, từ đó đánh giá hiệu quả kinh tế của mô hình. Cá được thả với mật độ 1,2 con/m2, tỷ lệ thả của cá Vược: cá Trắm đen là 4,6:1 với kích cỡ cá thả của cá Vược và cá Trắm đen tương ứng là 1,10 ± 0,12 kg/con và 1,57±0,18 kg/con. Thức ăn sử dụng cho cá Vược là cá tạp với lượng thức ăn bằng 3-5% tổng khối lượng cá, thức ăn công nghiệp (35% protein thô) được sử dụng cho cá Trắm đen với khối lượng bằng 2-3% tổng khối lượng cá. Kết quả cho thấy tốc độ tăng trưởng trung bình, tỷ lệ sống và FCR của cá Vược tương ứng là 6,15g/con/ngày, 93% và 7,2; của cá Trắm đen là 8,17g/con/ngày, 95% và 2,92. Chi phí cho thức ăn là chi phí lớn nhất, chiếm 54,02% tổng chi phí; thuốc và chế phẩm vi sinh chiếm một phần không đáng kể (2,68%) trong tổng chi. Hiệu quả kinh tế của các mô hình đạt hơn 886 triệu đồng/ha/năm. ABSTRACT The polyculture model of sea bass and back carp in earthen pond was conducted in 03 households in Lap Le commune, Thuy Nguyen district, Hai Phong city from March 2018 to February 2019. The objective of the study is to determine the growth rate and survival rate of sea bass and black carp, thereby evaluating the economic efficiency of the model. The stocking density was 1.2 fish.m-2 with the ratio of sea bass:black carp was 4,6:1. Initial body weight of sea bass was 1.10 ± 0.12 kg.fish-1 and black carp was 1,57 ± 0,18 kg.fish-1. Feed used for sea bass and black carp was trash fish and industrial feed (35% crude protein), respectively. Feeding level was 3-5% and 2-3% of total body weight for sea bass and black carp, respectively. The results showed that average growth rate, survival rate and FCR of sea bass and black carp were 6,15g.fish-1.day-1, 93%, 7,2 and 8,17g.fish-1.day-1, 95%, 2,92, respectively. Expense for feed was the largest cost, accounting for 54,02% of the total; especially the cost of medicine and probiotics was an inconsiderable part in these models (2,68%). Economic efficiency of the models gained more than 886 million VND.ha-1.year-1

scholarly journals Comparative Study On Nursing Of Different Strains Of Tilapia (Oreochromis niloticus) In Bangladesh

2016 ◽  
Vol 5 (2) ◽  
pp. 98-106
Author(s):  
MA Hossain ◽  
MJ Islam ◽  
MM Uddin ◽  
MM Hossain ◽  
M Kunda
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Body Weight Gain ◽  
Stocking Density ◽  
Experimental Period ◽  
Mustard Oil ◽  
Feed Conversion ◽  
Different Strains ◽  
The Individual

This study was conducted to investigate and compare the growth performance of four Tilapia strains in hapa nursing with the aim to find out the best strain of tilapia. The research was conducted by four treatments with five replicates each. The tilapia fry were collected from, BFRI source from BFRI HQ, Mymensingh stocked in Treatment-1; unknown source from Hi-Tech Tilapia Hatchery Dagoanbhuiya, Feni in Treatment-2, Philipine strain from Green Field Tilapia Hatchery, Laxmipur in Treatment-3 and fry from Breeding Cohort, Sonar Bangla Hatchery, Bamna, Barguna in Treatment-4. The Individual stocking weight (g) of fry was average 0.01g. The fries were stocked in 12 hapa at same stocking density of 1200 fish/m2. Each of the hapa was 2m × 1m × 1m size and fixed in an earthen ponds. Supplementary feed with 31.29% of protein level consisting of rice bran (25%), mustard oil cake (15%), wheat flour (30%) and fish meal (30%) was given at the rate of 40% of their body weight per day manually, four times a day at the beginning of the experimental period and reduced to 25% of their body weight and continued up to harvesting period. The results showed that fry of Treatment-4 strain was the best strain and had significantly (p < 0.05) higher final mean body weight (FMBW), mean body weight gain (MBWG), specific growth rate (SGR) (9.75%), gross yield (GY) (2.13) and Net yield (NY) (2.12) than the Treatment-1 , Treatment-2 strains and Treatemnt-3 strain. Treatment-4 strain had the fastest growth rate, whereas the lowest performing strain was that from Treatment-2. We also analyzed survival rate of the fish from stocking to harvest, survival rate was highest in Treatment-4 strain (80%) where lowest is Treatment-3. Treatment-4 stain also showed the best feed conversion ratio (FCR) 1.62 than others. Considering the overall performance it can be concluded that tilapia strain collected from Breeding Cohort source is best among the four strains. However, further research may still be needed to compare more strains from different water body to evaluate the genetic potential for Tilapia.International Journal of Natural Sciences (2015), 5(2) 98-106

Laju Pertumbuhan Ikan Kerapu Bebek Cromileptes altivelis yang Dipelihara dalam Keramba Jaring Apung

2016 ◽  
Vol 1 (1) ◽  
pp. 11 ◽  
Author(s):  
Safar Dody ◽  
Dinawanti La Rae
Keyword(s):  
Growth Rate ◽  
Stocking Density ◽  
Mesh Size ◽  
Fish Farming ◽  
Total Body Weight ◽  
Water Clarity ◽  
Trash Fish ◽  
Absolute Growth ◽  
Total Body ◽  
Net Cages

<strong>Growth Rate of Humpback Grouper Cromileptes altivelis Cultured in Floating Net Cages.</strong> Humpback Grouper <em>Cromileptes altivelis</em> fish farming has good opportunities in the future, although still experiencing problems in its cultivation. One of the parameters that needs to be considered is the stocking density associated with the cage area. The purpose of this study was to determine the appropriate stocking density to generate optimum growth of Humpback Grouper cultivated in floating net cages. The study was conducted using the experimental method with 3 treatments and 3 replications. There were 9 cages used with the size of 1 x 1 x 1.5 m3 and a mesh size of 0.5 inches. The study was conducted in the waters of Banda Neira, Maluku, with the condition of the waters during the experiment, such as salinity which ranged from 33.2 to 34.6‰, water temperature ranged from 25 to 31°C, pH ranged from 7 to7.5, current speed 0.32–3.97cm/s, and water clarity was 14.29 to 20 m. The feed was trash fish given twice a day, in the morning and afternoon as much as 10% of total body weight of fish. After 4 months of cultivation, the absolute growth was best demonstrated by the treatment with stocking density of 25 fish/cage, which was 18.22 g, while the lowest (13.25 g) was shown by the treatment with stocking density of 75 fish/cage. The specific growth rate in the treatment of 25 fish/cage reached 1.34%/day, while the treatment of 50 fish/cage and 75 fish/cage reached 1.18%/day and 0.97%/day respectively.<br /><br /><br />

scholarly journals THE INFLUENCE OF ANEMIA ON PHAGOCYTIC FUNCTIONS AND RESISTANCE TO INFECTION IN MICE

Blood ◽  
1947 ◽  
Vol 2 (Special_Issue_Number_1) ◽  
pp. 117-124 ◽  
Author(s):  
L. JOE BERRY ◽  
EVELYN C. HALLER
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Blood Loss ◽  
Salmonella Typhimurium ◽  
Total Body Weight ◽  
Control Group ◽  
Phagocytic Function ◽  
Progressive Development ◽  
Resistance To Infection ◽  
Total Body

Abstract The increase in phagocytic function of neutrophiles of mice was measured during the progressive development of anemia due to blood loss. The animals were bled from the tail, 2 per cent of total body weight being removed twice weekly for nine bleedings. Phagocytosis was 161 per cent of normal at the end of this period, and the erythrocyte totals and hemoglobin values were approximately two thirds of normal. The anemic mice were infected intraperitoneally with a suspension of Salmonella typhimurium and their survival rate was compared with normal mice similarly infected. Twenty-eight of 63 anemic mice survived and 14 of 63 normal mice survived. In a second experiment, mice were subjected to bleeding every third day for nine bleedings, and were then infected along with a control group. One half of the anemic animals were bled for three additional bleedings after the infection. Two of 48 control animals survived, 5 of 47 anemic mice, additionally bled, survived, and 19 of 47 anemic mice, not bled after infection, survived. This suggests that the increase in phagocytosis that accompanies anemia may be, at least in part, responsible for the increased resistance to infection.

scholarly journals PENGARUH PADAT TEBAR BERBEDA TERHADAP PERTUMBUHAN DAN SINTASAN RAJUNGAN ( Portunus pelagicus ) DI TAMBAK

2016 ◽  
Vol 2 (1) ◽  
pp. 19 ◽  
Author(s):  
Suharyanto Suharyanto ◽  
Suwardi Tahe
Keyword(s):  
Survival Rate ◽  
Carapace Width ◽  
Stocking Density ◽  
Total Body Weight ◽  
Research Station ◽  
Portunus Pelagicus ◽  
South Sulawesi ◽  
Randomized Design ◽  
Total Body ◽  
Average Size

Tujuan penelitian ini adalah untuk mendapatkan padat tebar optimal rajungan (Portunus pelagicus) yang dibesarkan di tambak. Penelitian ini dilaksanakan di Instalasi Tambak Percobaan Balai Riset Perikanan Budidaya Air Payau Maranak, Maros selama 98 hari. Tambak yang digunakan adalah berukuran 100 m2 tiga petak, 125 m2 tiga petak, dan tiga petak yang lain berukuran 150 m2. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok, dengan masing-masing luasan tambak 100, 125, dan 150 m2 sebagai kelompok. Perlakuan yang diaplikasikan adalah padat tebar 1 ind./m2, 3 ind./m2, dan 5 ind./m2 berukuran lebar karapas rata-rata 3,9 ± 0,6 cm dan bobot 8,3 ± 1,3 g; masing-masing tiga kali ulangan. Selama pemeliharan diberikan pakan ikan rucah dengan dosis 5% dari total biomassa per hari. Parameter yang diamati adalah pertumbuhan lebar karapas, bobot, dan sintasan serta produksi. Selama percobaan beberapa kualitas air diamati. Hasil penelitian menunjukkan bahwa padat tebar tidak berpengaruh nyata terhadap pertumbuhan lebar karapas dan bobot rajungan yang dibesarkan di tambak (P>0,05) tetapi berpengaruh nyata terhadap sintasan dan produksi (P<0,05). Perlakuan yang tertinggi sintasannya diperoleh pada perlakuan 1 ind./m2, yaitu 10,7%.The aim of this experiment was to find out the optimal stocking density of swimming crabs ( Portunus pelagicus ) reared in brackishwater ponds. The research was conducted in research station of Research Institute for Brackishwater Aquaculture Maranak, Maros, South Sulawesi for 98 days. Nine brackishwater ponds were used in this research and the dimension were 100 m2, 125 m2, and 150 m2, three brackishwater ponds, respectively. Experimental design used the Block Randomized Design, stocking densities were applied 1, 3, and 5 ind./m2 with three replicates respectively, average size of 3.9 ± 0.6 cm in carapace width and 8.3 ± 1.3 g in body weigth. During the rearing the crabs were fed with trace fish given of twice a day, dosage 5% of total body weight a day. During the experiment, the determined parameters were carapace width, survival rate and production. The result showed that the effect of stocking density not significantly different on the growth of carapace width and weight (P>0.05) but the survival rate was significantly different (P<0.05). The highest survival rate obtained on the treatment of 1 ind./m2, it was 10.7%.

scholarly journals The effect of feeding frequency on the growth and composition of individual organs in the rat

1976 ◽  
Vol 35 (1) ◽  
pp. 97-104 ◽  
Author(s):  
R. C. Pocknee ◽  
F. W. Heaton
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Total Body Weight ◽  
Male Rats ◽  
Feeding Frequency ◽  
Total Body ◽  
Effect Of Feeding ◽  
Number Of Cells ◽  
Gross Chemical Composition ◽  
Large Meal

1. The effect of consuming the same total amount of food in either one large meal or several small meals per d was studied using weanling male rats.2. The increase in total body-weight was the same in both instances, but the weights of the liver, kidneys, femur, small intestine and stomach were greater, and those of the spleen and residual carcass were smaller, in meal-eating rats than in continuously fed control animals. These differences persisted into the adult state.3. No differences in gross chemical composition were found between the corresponding organs of the two groups of rats, and the differences in weight appeared to be the result of changes in the general growth rate of individual organs.4. The hypertrophy of the kidneys in meal-eaters was due to an increase in mean cell size, but the increased weight of the liver and reduced weight of the spleen appeared to be largely the result of changes in the number of cells present.

scholarly journals Pertumbuhan benih ikan mas, Cyprinus carpio, yang diberi pakan dengan dosis berbeda pada kolam pekarangan dengan sistim resirkulasi

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Kalfianus Jasansong ◽  
Indra R. N. Salindeho ◽  
Reni L. Kreckhoff
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Cyprinus Carpio ◽  
Total Body Weight ◽  
Optimum Dose ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Significant Difference ◽  
Recirculation System ◽  
Total Body

The research was aimed to find out the optimum dose of feeding regime             to ensure the maximum growth of carp-seeds, Cyprinus carpio, reared in backyard pond with recirculation system. The experiment was carried out in Randomized Block Design with 3 different dose of feeding regimes as treatments, which were 3%, 4% and 5% of the total body weight per day.  Each treatment was triplicate and each repetition functioned as group of fish with different weight.  There were 3 groups which were, fish weighing 1.5–2.4 gram (Group-1), fish weighing 2.5 – 3.4 gram (Group-2) and fish weighing 3.5 – 4.8 gram (Group-3).  Each experimental unit was composed of 8 tested fish, placed in a netting-cage bag measuring 60×30×60 cm (l×w×h) with a mesh-size of 4 mm. Each group was composed of 24 tested fish, hence there were 72 tested fish in total.  Fish were fed twice a day at 07:00 and 17:00.  Tested fish were weighed every week, and the fish weight data were converted into FCR, absolute, relative and daily growth rate. Data were statistically analyzed using JMP statistic-program.  The results showed that, there was no significant difference in absolute, relative and daily growth rate among fish fed 3%, 4% and 5% of total body weight per day.   The best FCR was performed by fish fed 3% of total body weight per day.   Hence, this experiment result suggests that, carp reared in backyard pond with recirculation system should be fed with a dose of 3% of the total body weight each day, as fish might grow well and at the same time the amount of uneaten food, feces and metabolic wastes is minimized at this dose of feeding.

scholarly journals Understanding the Interaction Effects between Dietary Lipid Content and Rearing Temperature on Growth Performance, Feed Utilization, and Fat Deposition of Sea Bass (Dicentrarchus labrax)

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 392
Author(s):  
Lydia Katsika ◽  
Mario Huesca Flores ◽  
Yannis Kotzamanis ◽  
Alicia Estevez ◽  
Stavros Chatzifotis
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Specific Growth ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Dietary Lipid ◽  
Lipid Levels ◽  
Final Body Weight ◽  
Temperature Regimes ◽  
Fish Group

This study was conducted to elucidate the interaction effects of temperature and dietary lipid levels (2 × 2 factorial experiment) on the growth performance, muscle, and liver composition in adult farmed European sea bass (Dicentrarchus labrax). Two groups of fish (190 g; 60 fish per group) were distributed in 12 tanks in triplicates and kept at two different temperature regimes; one starting at 23 °C and then changed to 17 °C for 61 days, and the other starting at 17 °C and then changed to 23 °C for 39 days. Two commercial diets containing both ~44% crude protein but incorporating different dietary lipid levels, 16.5% (D16) and 20.0% (D20) (dry matter (DM)), were fed to the fish to apparent satiation; the type of diet fed to each fish group remained constant throughout the experiment. Final body weight, weight gain, and specific growth rate were significantly higher for the fish group held at 23 °C compared to the fish group at 17 °C (before the temperature changes), while the dietary fat content did not have any profound effect in both groups. Furthermore, the different temperature regimes did not affect muscle or liver composition, but, on the contrary, dietary lipids affected hepatosomatic, perivisceral fat, and visceral indexes. Feed conversion ratio and specific growth rate were not affected by the dietary lipid level. An interaction of temperature and dietary lipid content was observed in daily feed consumption (DFC) and final body weight (FBW).

scholarly journals Lean body weight versus total body weight to calculate the iodinated contrast media volume in abdominal CT: a randomised controlled trial

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Moreno Zanardo ◽  
Fabio Martino Doniselli ◽  
Anastassia Esseridou ◽  
Massimiliano Agrò ◽  
Nicol Antonina Rita Panarisi ◽  
...  
Keyword(s):  
Body Weight ◽  
Contrast Media ◽  
Controlled Trial ◽  
Total Body Weight ◽  
Lean Body Weight ◽  
Iodinated Contrast Media ◽  
Abdominal Ct ◽  
Iodinated Contrast ◽  
Significant Difference ◽  
Total Body

Abstract Objectives Iodinated contrast media (ICM) could be more appropriately dosed on patient lean body weight (LBW) than on total body weight (TBW). Methods After Ethics Committee approval, trial registration NCT03384979, patients aged ≥ 18 years scheduled for multiphasic abdominal CT were randomised for ICM dose to LBW group (0.63 gI/kg of LBW) or TBW group (0.44 gI/kg of TBW). Abdominal 64-row CT was performed using 120 kVp, 100–200 mAs, rotation time 0.5 s, pitch 1, Iopamidol (370 mgI/mL), and flow rate 3 mL/s. Levene, Mann–Whitney U, and χ2 tests were used. The primary endpoint was liver contrast enhancement (LCE). Results Of 335 enrolled patients, 17 were screening failures; 44 dropped out after randomisation; 274 patients were analysed (133 LBW group, 141 TBW group). The median age of LBW group (66 years) was slightly lower than that of TBW group (70 years). Although the median ICM-injected volume was comparable between groups, its variability was larger in the former (interquartile range 27 mL versus 21 mL, p = 0.01). The same was for unenhanced liver density (IQR 10 versus 7 HU) (p = 0.02). Median LCE was 40 (35–46) HU in the LBW group and 40 (35–44) HU in the TBW group, without significant difference for median (p = 0.41) and variability (p = 0.23). Suboptimal LCE (< 40 HU) was found in 64/133 (48%) patients in the LBW group and 69/141 (49%) in the TBW group, but no examination needed repeating. Conclusions The calculation of the ICM volume to be administered for abdominal CT based on the LBW does not imply a more consistent LCE.

Increases in adipose and total body weight, but not in lean body mass, associated with subcutaneous administration of Sonic hedgehog-Ig fusion protein to mice

2002 ◽  
Vol 57 (3) ◽  
pp. 107-114 ◽  
Author(s):  
Pauline L. Martin ◽  
Joan Lane ◽  
Louise Pouliot ◽  
Malcolm Gains ◽  
Rudolph Stejskal ◽  
...  
Keyword(s):  
Body Weight ◽  
Fusion Protein ◽  
Lean Body Mass ◽  
Body Mass ◽  
Sonic Hedgehog ◽  
Subcutaneous Administration ◽  
Total Body Weight ◽  
Total Body

Effects of the teratogenic folic acid antagonist, 9-methyl pteroylglutamic acid, on hydroxyproline levels in fetal rat limbs

Development ◽  
1977 ◽  
Vol 41 (1) ◽  
pp. 289-294
Author(s):  
R. R. Schmidt ◽  
K. P. Chepenik ◽  
B. V. Paynton
Keyword(s):  
Body Weight ◽  
Folic Acid ◽  
Total Body Weight ◽  
Pregnant Rats ◽  
Skeletal Malformations ◽  
Fetal Rat ◽  
Pteroylglutamic Acid ◽  
Limb Malformations ◽  
Total Body ◽  
Rate Of Accumulation

Pregnant rats were subjected to either a folic-acid-deficient regimen that produces multiple congenital skeletal malformations, or a control folic-acid-supplemented regimen. Fetal limbs were extirpated on days 16 and 18 of gestation, pooled from each litter, homogenized, and aliquots set aside for hydroxyproline, protein and DNA determinations. We found that (1) the amount of protein recovered per treated limb was approximately half that of controls on both days, (2) the amount of protein recovered per treated or controlday-18 limb was twice that of a day-16 limb, (3) treated limbs constituted the same percentage of total body weight as in controls on day 16, but a smaller percentage than in controls on day 18, and (4) the concentration of hydroxyproline (μg/mg protein) was significantly less for treated limbs than for controls on day 18 of gestation. We noted also that: (1) lowest hydroxyproline concentrations were found in limbs from treated fetuses with gross limb malformations, (2) intermediate concentrations were found in limbs of treated fetuses not exhibiting gross limb malformations, and (3) highest concentrations were found in control limbs. We suggest that the treatment resulted in (1) a decreased rate of accumulation of protein in limbs prior to day 16, but not from day 16 to day 18, (2) a decreased rate of accumulation of some non-protein component(s) in treated limbs from day 16 to day 18, and (3) an altered collagen metabolism.

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