ORIGINAL_ARTICLE
EFFECTS OF DIFFERENT LEVELS OF COPPER ON BROILER PERFORMANCE
Two hundreds and forty, one day old chicks were allocated randomly into 4 copper treatments (60 chicks each )in three replicates (20 chicks\replicate. They were housed in 12 pens. each pen was considered as experimental replicate . Copper levels, used as copper sulfate (Cu2SO4) were 0, 100, 200 and 300 mg/ kg diets. The criteria of response were body weight, weight gain, feed conversion, tibia measurements and mineralization and carcass traits.The experimental period was 35 days .
The results indicated that copper supplemented groups were recorded significantly higher values during the 4th and 5th week for body weight and during the grower and overall periods for body weight gain compared with the control group which recorded the lowest value for the same parameters and periods mentioned above. However, there were no significant differences in body weight and body weight gain during the 2nd week of the experiment among the different groups. On the other hand, there were no significant differences among tested groups for feed intake and feed conversion ratio for all experimental periods except the grower period where birds in the highest two level groups of copper supplementation consumed more feed compared with the other groups. Broiler groups fed diets supplemented with 100 and 300 ppm Cu gave the best values of feed conversion ratio compared with either 0 or 200 ppm Cu groups. No significant effects were detected in relative weights of carcass, liver, gizzard, heart, spleen, edible parts, inedible parts, fat and tibia due to feeding diets containing different levels of Cu supplementation. Also, there were no significant differences between groups fed different levels of Cu supplementation in all tibia measurements and mineralization except for group fed 300ppm Cu which recorded a significant decrease in Ca and P concentrations compared with the other groups.
It could be concluded from results obtained that copper sulfate supplementation up to 200 ppm to broiler diets had beneficial effect on growth performance under this study and without any adverse effects on carcass traits
https://jappmu.journals.ekb.eg/article_86237_dfc7db0ed4649c083871772ed738bb0f.pdf
2010-08-01
317
323
10.21608/jappmu.2010.86237
Poultry
copper
performance
carcass traits
tibia measurements and mineralization
I.
Hashish
1
Poultry Production Dept., Fac. of Agric., Ain Shams Univ., Egypt.
AUTHOR
H.
Sorour
2
Biological Chemistry Dept., Fac. of Agric., Ain Shams Univ., Egypt.
AUTHOR
F.
Mohamed
3
Poultry Production Dept., Fac. of Agric., Ain Shams Univ., Egypt.
AUTHOR
N.
El-Medany
4
Poultry Production Dept., Fac. of Agric., Ain Shams Univ., Egypt.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF STOCKING DENSITY ON GROWTH PERFORMANCE AND PRODUCTION OF SILVER CARP (Hypohthalmichthys molitrix) CULTURED IN FLOATING CAGES.
Silver carp (H. molitrix) fingerlings with initial weight of 20.1 g. were stocked at a rate of 2500 , 5000 and 10000 fish/cage in 6 cages (two cages per treatment) each of 9 × 6 × 3 m. The total duration of experiment was 10 months (300 day).
Wight gain and specific growth rate were significantly decreased with increasing stocking density.
The highest net return was obtained with stocking density of 5000fish/cage, while the lowest net return was obtained with stocking density of 2500fish/cage. Survival was negatively correlated with stocking densities through the experimental period.
In conclusion, the optimum stocking density of Silver carp under the conditions of this experiment is 5000 fish/cage in terms of growth performance, total production and net return.
https://jappmu.journals.ekb.eg/article_86238_b9abcc457bdfce5ce7912ca0333fe3ca.pdf
2010-08-01
325
334
10.21608/jappmu.2010.86238
Silver carp
stocking density
cages
Growth performance
economic efficiency
M.
Mostafa
1
Dept. Aquaculture, Central Laboratory for Aquaculture Res., Abbassa, Abo-Hammad, Sharkia Governorate, Egypt.
AUTHOR
I.
Samra
2
Dept. Aquaculture, Central Laboratory for Aquaculture Res., Abbassa, Abo-Hammad, Sharkia Governorate, Egypt.
AUTHOR
M.
Radwan
3
Dept. Aquaculture, Central Laboratory for Aquaculture Res., Abbassa, Abo-Hammad, Sharkia Governorate, Egypt.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF Mugil cephalus SIZE AND DENSITY AT INITIAL STOCKING ON GROWTH PERFORMANCE AND SIZE AT HARVEST.
A study on cultivation of mullet (Mugil cephalus) in one feddan earthen ponds (4200 m2 each) was done. Twelve rectangular earthen ponds were used representing six treatments, three different stocking densities (SD1, SD2 and SD3 being 10000, 12000 and 14000fish/feddan, respectively) within each of them two fish size (FS1 and FS2 , being 10.05 ± 0.12 and 20.03 ± 0.30 g, respectively). Two replicates were used for each treatment. The duration of the experiment was 12 months. The treatment of 12000 fish / feddan with 20 g/ fish showed the best results of marketable size, net yield (6562.58kg/feddan) and highest profit index (1.54 L.E). Based on the obtained results, it could be recommended that the best fish size and stocking density of mullet (M.cephalus) are 20 g/ fish and 12000 fish/feddan to get the optimal marketable fish size and economical return under pond farm management conditions
https://jappmu.journals.ekb.eg/article_86239_dbb170298efaff6e7461f3d7b967e96b.pdf
2010-08-01
335
344
10.21608/jappmu.2010.86239
stocking density
fish size
Mullet (M.cephalus)
Growth performance
Fish marketable size
Profit index
M.
Bakeer
1
Central Laboratory for Aquaculture Research, Abbassa, Abo-Hammad Sharkia Governorate, Egypt.
AUTHOR
M.
Mostafa
2
Central Laboratory for Aquaculture Research, Abbassa, Abo-Hammad Sharkia Governorate, Egypt.
AUTHOR
M.
Samra
3
Central Laboratory for Aquaculture Research, Abbassa, Abo-Hammad Sharkia Governorate, Egypt.
AUTHOR
ORIGINAL_ARTICLE
THE ACTION OF CHROMIUM, INSULIN OR THEIR COMBINATION ON PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF RABBIT DOES AND THEIR OFFSPRING.
To determine the effect of supplemental chromium picolinate (CrP) and insulin or their combination on reproductive performance of NZW rabbit does and growth performance of their offspring, 25 mature does and 5 bucks were used in this study. Does were divided into 4 groups, G1 (N=5, control), G2 (n=7, daily oral dose from CrP (18 μg CrP/kg LBW for two weeks), G3 (n=6, i.m. injected with 8 U insulin/doe/injection, twice at 7 day-interval), and G4 (n=7, 9 μg CrP/kg + 4 U insulin/doe/injection). All treatments were two weeks pre-insemination, while the experimental period lasted up to 3 wk post-partum of the 1st litter. Rabbits were fed ad. libitum, on commercially pelleted diet (17%CP and 12.3 MJ ME/kg). Does in each group were naturally mated with untreated sexually mature bucks. Live body weight (LBW), feed intake (FI), milk produced (MP) of each doe was recorded during three successive weeks post-partum. Blood samples were collected at the end of the experimental period. Results revealed that during the treatment period (2 weeks), FI decreased (P<0.05) in G2 and was not affected in G3 and G4 compared with the control group. During post-partum (1-2 or 2-3 wk), FI decreased (P<0.05) in G2 compared with G3 and G4, but did not differ significantly from the control group. There was insignificant effect of treatment on LBW of does during treatment weeks or at 3 wk post-partum. In blood serum, concentration of Cr increased (P<0.05) by 16% in G2 (1.311 ppm), modest in G4 (1.144 ppm), and the lowest in G3 (0.889 ppm), which did not differ significantly from that in the control group (0.811 ppm). Concentration of glucose decreased (P<0.05) in G2, G3 and G4 as compared to the control group by about 20.6, 14.8 and 20.8%, respectively. The effect of treatment on concentration of creatinine or T3 and T4 in blood serum was not significant. Activity of AST and ALT was higher (P<0.05) in all treatment groups than in the control group. Milk produced from rabbit does was higher (P<0.05) in G3 (213.6 g/doe) than in other groups (186.2-199.5 g/doe). Conception rate was higher (P<0.05) in G3 and G4 (100%) than in G2 and control groups (85.7 and 60%) after the 1st service and was 85.7 and 80% as cumulative rate after the 2nd service. Number of services per conception (NS/C) was lesser (P<0.05) in G3 and G4 than in the control group (1 service in each vs. 1.40 in control). Does in G2 showed lesser NS/C (1.14 services/conception) than the control group and greater than G3 and G4, but the differences were not significant. Litter size at birth was 8.5, 7.5, 7.0 and 4.5/litter in G3, G4, G2 and control group. Average total litter weight per doe was the highest (P<0.05) for does in G3, followed by G4 and the lowest in G2 and control groups.
In conclusion, treatment of doe rabbits with two injections of insulin (8 U/doe) or 9 μg CrP/kg + 4 U insulin/doe/injection), 7 days apart had beneficial effects on reproductive performance of NZW does in term of increasing litter size and growth performance of their offspring in term of increasing litter weight.
https://jappmu.journals.ekb.eg/article_86240_dd860d702da2c555eb5f003f024db20d.pdf
2010-08-01
345
358
10.21608/jappmu.2010.86240
To determine the effect of supplemental chromium picolinate (CrP) and insulin or their combination on reproductive performance of NZW rabbit does and growth performance of their offspring
25 mature does and 5 bucks were used in this study. Does were divided into 4 groups
G1 (N=5
control)
G2 (n=7
daily oral dose from CrP (18 μg CrP/kg LBW for two weeks)
G3 (n=6
i.m. injected with 8 U insulin/doe/injection
twice at 7 day-interval)
and G4 (n=7
9 μg CrP/kg + 4 U insulin/doe/injection). All treatments were two weeks pre-insemination
while the experimental period lasted up to 3 wk post-partum of the 1st litter. Rabbits were fed ad. libitum
on commercially pelleted diet (17%CP and 12.3 MJ ME/kg). Does in each group were naturally mated with untreated sexually mature bucks. Live body weight (LBW)
feed intake (FI)
milk produced (MP) of each doe was recorded during three successive weeks post-partum. Blood samples were collected at the end of the experimental period. Results revealed that during the treatment period (2 weeks)
FI decreased (P
FI decreased (P
but did not differ significantly from the control group. There was insignificant effect of treatment on LBW of does during treatment weeks or at 3 wk post-partum. In blood serum
concentration of Cr increased (P
modest in G4 (1.144 ppm)
and the lowest in G3 (0.889 ppm)
which did not differ significantly from that in the control group (0.811 ppm). Concentration of glucose decreased (P
G3 and G4 as compared to the control group by about 20.6
14.8 and 20.8%
respectively. The effect of treatment on concentration of creatinine or T3 and T4 in blood serum was not significant. Activity of AST and ALT was higher (P
but the differences were not significant. Litter size at birth was 8.5
7.5
7.0 and 4.5/litter in G3
G4
G2 and control group. Average total litter weight per doe was the highest (P
followed by G4 and the lowest in G2 and control groups. In conclusion
treatment of doe rabbits with two injections of insulin (8 U/doe) or 9 μg CrP/kg + 4 U insulin/doe/injection)
7 days apart had beneficial effects on reproductive performance of NZW does in term of increasing litter size and growth performance of their offspring in term of increasing litter weight
A.
Abdel-Khalek
abdelkhalk2004@yahoo.com
1
Anim. Prod. Dept., Fac. Agric., Mansoura University.
AUTHOR
M.
El-Harairy
mharairy53@yahoo.com
2
Anim. Prod. Dept., Fac. Agric., Mansoura University.
AUTHOR
M.
El-Ayek
3
Anim. Prod. Dept., Fac. Agric., Mansoura University.
AUTHOR
A.
Ghodaia
4
Anim. Prod. Dept., Fac. Agric., Mansoura University.
AUTHOR
ORIGINAL_ARTICLE
INTENSIVE PRODUCTION OF COMMON CARP(Cyprinus carpio .L.) FINGERLINGS REARED IN CONCRETE PONDS
This study was carried out to investigate the effect of different stocking densities on the growth performance of common carp (Cyprinus carpio) fingerlings reared in concrete ponds to produce the requested fingerlings prior to the next production season.
This experiment was concluded the following treatments: Treatment 1 = stocked by the rate of 25 fish/m3 Treatment 2 = stocked by the rate of 50 fish /m3 Treatment 3= stocked by the rate of 75 fish /m3.All treatments were in triplicate, and fed with 25% crud protein of prepared artificial pelleted feed and reared in 20 m3 of concrete ponds. The duration of the experiment was 20 weeks.
Results are summarized in the following:
- Final body weight was affected with stocking density, the analysis of variance revealed that groups an average final weight decreased significantly (p≤ 0.05) with each increase in the stocking density. The same trend was observed in the body weight gain per fish. Total weight/pond and total weight gain /pond were in opposite trend where it were significant increase (p≤ 0.05) with each increase in stocking density.
- Total body length and relative growth rate (RGR%) of reared fish was significantly (p<0.05) decreased with each increase in stocking density at the end of the experimental period.
- The values of specific growth rate(SGR%) which influenced after rearing period (20 week) with the stocking density by slightly decrease with each increase in the stocking density.
- Condition factor (K) of Cyprinus carpio , showed a slight decrease with each increase in three stocking densities applied after the rearing periods of 137 days.
- Feed conversion ratio (FCR) was indicated that for stocking density tested improved with each decrease of the stocking density.
- The highest survival rate(91%) was combined to the lowest stocking density 25 fish/m3, while the lowest value (73%) was under the highest stocking density of 75 fish m3.
- Daily weight gain(g/fish)significant decrease(p≤0.05)with each increase in stocking density
- Water quality parameters through the experimental duration was in favorable range for fish culture (water temperature, dissolved oxygen, ammonia, pH, total hardness and total alkalinity).
- All results indicated that the total production and other growth performance parameters were decreased significantly (p≤ 0.05) with the increasing stocking density.
https://jappmu.journals.ekb.eg/article_86241_016edd342d950fd7ad4bcb1187ddfaf9.pdf
2010-08-01
359
370
10.21608/jappmu.2010.86241
N.
Abdel-Hakim
1
Faculty of Agriculture , Al - Azhar University , Cairo
AUTHOR
M.
Hussein
2
Faculty of Agriculture , Al - Azhar University , Cairo
AUTHOR
E.
Attia
3
Central Laboratory for Fish Resources and Research, Abbassa, Agricultural Research Center
AUTHOR