scholarly journals Production results of various categories of pheasants reared under controlled conditions

2011 ◽  
Vol 27 (4) ◽  
pp. 1819-1826
Author(s):  
Z. Popovic ◽  
N. Djordjevic ◽  
M. Beukovic ◽  
D. Beukovic ◽  
M. Djordjevic
Keyword(s):  
Body Mass ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Brood Stock ◽  
Feeding Technique ◽  
Concentrate Mixture ◽  
Second Period

The overview of domestic and foreign investigations of the effects of various intensity of ant feeding technique in various categories of pheasants. With the aim to increase number of pheasants in our country and in the world, for decades pheasant chicks are produced in pheasant farms up to the age of 5-8 weeks, and body mass of 400-450 g, after which they are released into the hunting grounds. The capacity of pheasant farms in Serbia is about 900.500 hatched chicks, and in the past four decades several tens of millions of artificially reared pheasants were released. The quality of feeding the brood stock of pheasants, which produce eggs for hatching incubator has a direct influence on number, mass and fertility of eggs, and on the mass of newly hatched chicks. The feed conversion ratio in chicks depends on the first place on energy and protein level, and also on biological value of protein. In domestic investigations of pheasant chicks feeding with the concentrate mixture with higher protein value (30% to 28 days of age and 24% to 42 days of age) and with lower stocking density (450 individuals in the group), had significantly bigger Final body mass (457.07 g) and higher daily gain (4.22 g in the first 13:31 and g in the second period), and with better feed conversion ratio.

Effects in bacon pigs of differing levels of nutrition to 20 kg. body weight

1964 ◽  
Vol 6 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Henning E. Nielsen
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Eye Muscle ◽  
Group 4 ◽  
Second Period ◽  
Daily Gain

Sixteen blocks of eight littermate pigs were weaned at 3 weeks of age and each divided into four groups. Various levels of nutrition were applied to the pigs so that the four groups reached 20 kg. at 59, 68, 80 and 91 days of age, respectively.Only small differences were observed between groups in feed conversion ratio to 20 kg.; however, Group 4 required more feed per kg. gain than the three other groups.During the second period (20–90 kg.) the pigs in each group were divided into two sub-groups, which were on a high and a low plane of nutrition respectively. In both sub-groups the type of feeding before 20 kg. influenced the average daily gain and feed conversion ratio. The older the pigs were at 20 kg. the higher the daily gain and the lower the feed conversion ratio in the following period. There was an increase in daily feed intake with increased age at 20 kg. for pigs fed ad lib. during the second period.An increase in age at 20 kg. caused a significant decrease in thickness of backfat, a greater area of eye muscle and a smaller area of fat overlying muscle. For pigs fed ad lib. the area of eye muscle was significantly increased by a higher age at 20 kg. live-weight.

scholarly journals Effect of age on feed efficiency and carcass yield characteristics of indigenous bull

2017 ◽  
Vol 46 (1) ◽  
pp. 17-23 ◽  
Author(s):  
N Sultana ◽  
KS Huque ◽  
MZ Rahman ◽  
NG Das
Keyword(s):  
Age Groups ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Concentrate Mixture ◽  
Retail Cuts ◽  
Daily Gain ◽  
Effect Of Age

The study was conducted with the objectives to understand the effect of age of native Pabna bulls on feed conversion ratio (FCR), digestibility and carcass yield characteristics. Fifteen Pabna bulls having five  in each age groups of 6 to12, 13 to 24 and 25 to 36 months  were fed   ad libitum mix silages of Splendida (Setaria splendida) and Andrpogan (Andropogon gyunus) grasses (1:1 fresh) and supplemented with a concentrate mixture at 1% of live weight (LW) for a period of 72 days. With the increase of age, and subsequently LW (initial LW: 98.2, 182.6 and 288 kg, respectively), there was significant decrease in dry matter (DM) intake as % LW (<0.05; 2.94, 2.61 and 2.36, respectively) and increased daily gain (<0.01; 294, 519 and 597 g/d, respectively). However, the feed conversion ratio (FCR) (>0.05; 10.88, 10.10 and 12.24, respectively) and DM digestibility (>0.05; 51.0, 48.1 and 49.1 %, respectively) of bulls were remained unchanged. In case of carcass yield characteristics, significantly lower yield grade (<0.01; 1.79, 1.27 and 0.20, respectively) of bulls of 25 to 36 years produced higher closely trimmed boneless retail cuts (CTBRC) (<0.01; 50.47, 51.64 and 54.14 %, respectively), retail cut (<0.01; 76.14, 78.55 and 83.48 %, respectively) and meat quality index (MQI) (<0.01; 67.28, 67.89 and 69.07, respectively) compared to younger bulls. It may, therefore, be recommended that beef cattle farming with native Pabna bulls of 24 to 36 months will give more daily LW gain and produce more CTBRC at a similar FCR compared to younger ones.Bang. J. Anim. Sci. 2017. 46 (1): 17-23

scholarly journals Effect of Stocking Density on Survival Rate and Growth of Tilapia (Oreochromis niloticus Linnaeus, 1758) in Round Container with Water Current Combined with Venturi Aeration System

2020 ◽  
pp. 52-61
Author(s):  
Ayi Yustiati ◽  
Shalsabilla Nariswari ◽  
Iis Rostini ◽  
Ibnu Bangkit Bioshina Suryadi
Keyword(s):  
Survival Rate ◽  
Feed Efficiency ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Water Current ◽  
Feed Conversion ◽  
Randomized Design ◽  
Aeration System ◽  
Completely Randomized Design

The aim of this research is determine of the optimal stocking density for survival rate and growth of tilapia in round container with water current combined with venturi aeration system. Place of research in the Aquaculture Laboratory, Building 4 Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. The research method used is experimentally with using the Completely Randomized Design (CRD) method which consists of three treatments, there are 15 fish, 22 fish, 30 fish, with five replications. Using water of 15 L per container. The fish used are 3-5 cm tilapia fingerlings. Fish were maintained for 40 days. The feed given is 5% from biomass which is adjusted every 10 days. The parameters observed were survival rate (SR) and observed everyday, daily grow rate (DGR), feed conversion ratio (FCR) and feed efficiency were observed every 10 days. The result was significantly different from the analysis of variance (ANOVA) with the F test at 95% confidence intervals and then using Duncan test to compare the rates between treatments. The results showed that the best treatment was stocking density of 15 fish / 15 L in round container with current combined with venturi aeration system with survival rate of 78.67 ±10.95%, daily grow rate of 3.68 ± 0.12%, feed conversion ratio of 1.19 ± 0.13 and feed efficiency of 85.01 ± 8.97%.

Decorticated safflower meal as a protein supplement in diets fed either restrictively or ad libitum to barrow and gilt pigs over 45 kg liveweight

1974 ◽  
Vol 14 (66) ◽  
pp. 12 ◽  
Author(s):  
KC Williams ◽  
PK O'Rourke
Keyword(s):  
Soybean Meal ◽  
Average Daily Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Large White ◽  
Protein Supplements ◽  
Ad Libitum ◽  
Daily Gain

Twenty barrow and twenty gilt Berkshire x Large White pigs were fed barley based diets containing protein supplements of either 13 per cent soybean meal, 9 per cent fishmeal, 14.5 per cent safflower meal plus 0.2 per cent I-lysine mono hydrochloride plus 0.1 per cent methionine or 14.5 per cent safflower meal plus 4.5 per cent fishmeal from 46.4 to 87.0 kg liveweight. All diets were fed individually at a restricted feeding scale. The safflower meal diets were also fed ad libitum. Barrows and gilts fed ad libitum recorded a 65 and 27 per cent improvement respectively in average daily gain and had slightly fatter carcases than those fed comparable diets restrictively. Feed conversion ratio was not significantly affected by level of feeding. Growth and carcase attributes of pigs fed diets restrictively were similar apart from the feed conversion ratio of pigs fed the amino acid supplemented safflower meal diet, which was inferior (P < 0.05) to those fed the soybean meal supplemented diets. Barrows grew faster and produced fatter carcases than gilts, A significant sex x diet interaction occurred from which it was concluded that gilts, but not barrows, could be fed ad libitum without detriment to the quality of the carcase.

PERTUMBUHAN, SINTASAN DAN PRODUKSI IKAN NILA MERAH (Oreochromis niloticus) YANG DIBERI KOMBINASI PAKAN KOMERSIL DAN AMPAS TAHU HASIL FERMENTASI

2018 ◽  
Vol 17 (3) ◽  
Author(s):  
Hidayat Suryanto Suwoyo ◽  
Sri Redjeki Hesti Mulyaningrum ◽  
Rachman Syah
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Oreochromis Niloticus ◽  
Stocking Density ◽  
Pond Water ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Red Tilapia ◽  
Commercial Feed

The study aimed to evaluate the combination between commercial feed and fermented tofu waste feeding for growth, survival rate and production of red Tilapia Oreochromis niloticus in pond. The study was conducted in Experimental Pond Installation of Research Institute for Coastal Aquaculture, Maros, South Sulawesi, using eight ponds with 2,500 m2 in size. Red Tilapia fingerlings (±8 cm in length) were reared for 112 days with 1 individu/m2 of stocking density. The feeding treatments were of 100% commercial feed (A), 75% commercial feed + 25% fermented tofu waste (B), 50% commercial feed + 50% fermented tofu waste (C), and 25% commercial feed + 75% fermented tofu waste (D). Feeding frequency was given twice a day using concentration 10% of biomass weight in the first month, and decreased by 3% of biomass weight in the fourth month. Experimental was designed by a completely randomized designed consisted of four treatments and two replications for each treatment. Observed variables were growth, survival rate, feed conversion ratio, production, and water quality. Present study indicated that different levels of combination of commercial feed and fermented tofu waste had significant effect on growth (P<0.05), but did not have significant effect on survival rate, production, and feed conversion ratio (P>0.05). Feeding by combination of 75% commercial feed + 25% fermented tofu waste could be utilized optimally by Tilapia. During experiment, pond water quality was in conducive condition to support the growth and survival rate of red Tilapia.

scholarly journals Sinking Feed Efficiency in Growth Performance, Feed Conversion Ratio (FCR) and Yield of Tilapia (Oreochromis niloticus) at Different Stocking Densities

2021 ◽  
pp. 1-26
Author(s):  
Md. Hashibur Rahman ◽  
Md. Nasirul Islam
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Growth Trends ◽  
Aquaculture System ◽  
T1 And T2 ◽  
Intensive Aquaculture

The efficiency of feed is considered as one of the most crucial factors that affects the growth performance, feed conversion ratio and yield as well. The study was aimed to compare the growth parameters of tilapia at different stocking densities to detect the efficiency of sinking feed assessing the growth trends at various sampling stages. To evaluate the comparative yield, the study was carried out in twelve concrete tanks under an outdoor laboratory shed. Tilapia (Oreochromis niloticus) fry was released at the rate of 8 fry per tank as per the recommended stocking density of 320 fishes/decimal and 4 fry per tank equivalent to the stocking density of 160 fishes/decimal in intensive and semi-intensive aquaculture system, respectively. To evaluate the growth trends sinking feed was used for feeding the fish during the experimental period for T1 (Intensive) and T2 (Semi-intensive), respectively. The feed was supplied in each with three replications at the rate of 20%, 15%, and 10% of the body weight of fish, respectively. The daily ration of feed was delivered to fish dividing into two parts daily. Aeration facilities using air stone aerator were installed for 24 hours. To assume the consecutive growth trends, weight of fish was recorded in 3 days interval to have better understanding on the yield performance in relation to the feed conversion ratio (FCR). Water quality parameters i.e., temperature and dissolved oxygen (DO) were recorded two times daily. The final weight gains of fish were 133.77±5.65 gm and 50.70±2.40 gm for T1 and T2, respectively. The mean percent weight gain of tilapia was higher in T1 (1127.25±0.00) than T2 (518.51±0.00 gm). Feed conversion ratio (FCR) in T1 and T2 were 1.97±0.11 and 1.70±0.07, respectively. The specific growth rates (SGR) of tilapia in T1 4.90±3.03 and 4.78±3.83 considering the data at the beginning and the end of the production cycle, respectively. Higher total production was obtained in T1 (1070.19 gm) than T2 (610.00 gm) with 100% survival in both the treatments. The present study reveals that, the efficiency of sinking feed was higher in T1 than T2 and farmers might be suggested to practice tank-based intensive aquaculture system to get higher production in a short period of time.

scholarly journals Modelling of Body Mass Increase and Feed Conversion Ratio in Chickens ROSS 208

2004 ◽  
Vol 73 (1) ◽  
pp. 17-22
Author(s):  
P. Novák ◽  
L. Zeman ◽  
K. Košař ◽  
L. Novák
Keyword(s):  
Body Mass ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Mass Increase

scholarly journals PENGARUH KEPADATAN KANDANG TERHADAP KONSUMSI RANSUM, PERTAMBAHAN BERAT TUBUH, DAN KONVERSI RANSUM BROILER UMUR 14-28 HARI DI CLOSED HOUSE

2020 ◽  
Vol 4 (1) ◽  
pp. 35-40
Author(s):  
Siti Mariyam, Syahrio Tantalo, Riyanti, dan Dian Septinova
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Body Weight Gain ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Randomized Design ◽  
Feed Conversion Rate

This research aimed : 1) to investigate the effect of stocking density on feed consumption, body weight gain, and feed conversion rate of broiler aged 14—28 days in closed house; 2) to determaine the best stocking density on feed consumption, body weight gain, and feed conversion ratio of broiler aged 14—28 days in closed house. This research was conducted in closed house of PT. Charoen Pokphand (Kandang Bandara 2) located in Bangun Sari area of Way Sari village, Natar district, South Lampung regency.  This research was conducted for 28 days, with rearing broiler from day 1st—13th was without treatment, and then from day 14th—harvest with treatments,  that was conducted in April 2019—May 2019.  This research used completely randomized design with 4 treatments (15, 17, 19, and 21 stocking density of chickens m-2) and 5 replications.  Data obtained was analyzed using analysis on variance at 5% levels of significance and followed by Duncan’s Multiple Range Test. Results showed that different stocking density of  15, 17, 19, and 21 chickens m-2 affected (P<0.05) on feed consumption (with feed consumption of broiler of stocking density of 15 chickens m-2 was significantly (P<0.05) lower than those of 17, 19, and 21 chickens m-2), but it did not affect (P>0.05) on body weight gain and feed conversion ratio of broiler in closed house.   Keywords: Body weight gain, Closed house, Feed consumption, Feed convertion rate, Cage density

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