ORIGINAL_ARTICLE
ACCUMULATION OF SOME HEAVY METALS IN DIFFERENT LIBYAN FISH SPECIES FROM FRESH WATER AND MARINE ENVIRONMENTS
In this paper; the concentrations of Pb, Cd, Cr, Zn, Cu, Mn and Fe were determined in the muscle tissues of seven marine and one fresh water fish species. Marine fishes were collected from the Mediterranean sea of the shore of Misurata; while fresh water fishes were collected from Tawarga stream located at about 65 Km west of Misurata according to fish habitat and type of heavy metal itself. Different fish species were collected from different Libyan localities. The results showed that the highest levels of lead, cadmium, chromium, zinc, copper, manganese and iron were found in Bolty (1.64 mg / kg ), Bouri (0.07 mg / kg ), Sardine (0.93 mg / kg), Denis(5.84 mg / kg),Balameat (0.97 mg/kg), Sardine (0.57 mg / kg), and Maghazel (8.61 mg / kg ) fish, respectively. The lowest levels of lead, cadmium , chromium , zinc and copper, were found in Balameat, (0.71 mg / kg ), Sardine (0.03 mg / kg ),Maghazel (0.06 mg / kg ),Bolty(2.1 mg / kg ) and Bolty (0.46 mg / kg ) fish , respectively. With regard to manganese, the lowest levels were observed in Kawally (0.25 mg / kg ), and Maghazel (0.24 mg / kg ), whereas Denis and Tuna fish showed lowest levels of iron (1.17 mg / kg ).
https://jappmu.journals.ekb.eg/article_70519_414a833d1e3132cab90ff4aefa8ab645.pdf
2014-07-01
423
433
10.21608/jappmu.2014.70519
I.
Ohaida
1
Zoology Department, Faculty of Science, University of Misurata, Libya.
AUTHOR
ORIGINAL_ARTICLE
ALLEVIATING ADVERSE EFFECTS OF HEAT STRESS BY USING ORGANIC SELENIUM AND CHROMIUM FOR LOCAL LAYING HENS.
This experiment was conducted to evaluate the effect of selenium (Sel-Plex) and chromium picolinate on some blood parameter of local laying hens reared under high environmental temperatures. Two hundred and seventy laying hens (24 week-old) were divided into nine groups, 30 hens per group using two levels of selenium (0.3 and 0.5 mg/kg diet) and two levels of chromium picolinate (1200 and 1400 μg/kg diet). The control group was fed a basal diet. The obtained results can be summarized as follows: Laying hens fed the Se and Cr-supplemented diets achieved significantly higher total counts of blood erythrocytes and leukocytes, and lymphocytes, hemoglobin, packed cell volume as compared to their control counterparts. However, there were significant decreases (P≤0.05) in total monocytes but total heterophil were not affected compared with the un-supplemented control group. Dietary supplementation with Se and Cr caused significant (P≤0.05) increases in blood plasma levels of total protein, globulin, chloride, calcium, phosphorus, triiodothyronine, and thyroxine, while levels of albumin, albumin: globulin ratio, creatinine and urea were decreased as compared to those of the control group. Hens fed the Se and Cr-supplemented diets attained significantly lower (P≤0.05) levels of plasma concentrations of cholesterol, glucose, total lipids and triglycerides as well as activity of transaminases (ALT and AST) as compared to their control counterparts. From the present results, it is concluded that enhancing hen’s diets with selenium (as Sel- Plex) and chromium picolinate singly or in combination at levels of 0.3 mg Se plus 1400 μg Cr /kg diet can consider as an effective management practice for reducing the adverse effects of heat stress for laying hens.
https://jappmu.journals.ekb.eg/article_70521_500cce489b0d1db93e3e4402c460a568.pdf
2014-07-01
379
411
10.21608/jappmu.2014.70521
heat stress
local laying hens
blood parameters
El-Samra
Abo-Egla
1
Poult. Prod. Dep., Fac. Agric., Mansoura Univ.
AUTHOR
Z.
Kalaba
2
Poult. Prod. Dep., Fac. Agric., Mansoura Univ.
AUTHOR
A.
Tolba
3
Anim. Prod. Res. Inst., Agric. Res. Center, Ministry of Agric. Dokki, Giza.
AUTHOR
M.
El-Deeb
4
Anim. Prod. Res. Inst., Agric. Res. Center, Ministry of Agric. Dokki, Giza.
AUTHOR
ORIGINAL_ARTICLE
DIETARY PRO-GROW® PROBIOTIC AGAINST HIGH STOCKING DENSITY STRESS: 1-EFFECT ON WATER QUALITY, GROWTH PERFORMANCE, FEED UTILIZATION AND CARCASS COMPOSITION OF NILE TILAPIA Oreochromis niloticus
Stocking density (SD) is one of the key factors influencing the perceived level of stress in fish. The present study was designed to evaluate the effects of dietary graded levels of a new commercial probiotic Pro-Grow® and SD on adult Nile tilapia Oreochromis niloticus, concerning rearing water quality, growth performance, feed utilization, and fish carcass composition for 15 weeks. Fish with an average initial body weight (55.75 ± 0.6 g) were distributed into six treatments (three replicates per treatment). Fish were stoked at 40 and 80 fish / m3 and fed Pro-Grow® probiotic at three levels (0, 10 and 20 g / kg diet) for each SD. The obtained results revealed that the high SD had negative significant (P ≤ 0.05) effects on rearing water quality (dissolved oxyegen and total nitrogen ammonia, but still within the acceptable ranges for rearing O. niloticus), growth performance, feed utilization and fish carcass composition (ash and crude protein) parameters compared to the low SD. However, addition of dietary Pro-Grow® significantly improved these adversely effects of high SD on fish, especially at high level 20 g / kg diet followed by 10 g / kg diet compared to the control group. Hence, the significantly interaction between high SD and high level of Pro-Grow® was detected in most of the above parameters. So, it could be concluded that the high level (20 g / kg diet) of Pro-Grow® probiotic is useful with high SD (80 fish / m3) for enhancing the production performance of O. niloticus.
https://jappmu.journals.ekb.eg/article_70524_b1095f7fe4257db55fe9cef9545705d8.pdf
2014-07-01
377
395
10.21608/jappmu.2014.70524
ile tilapia – probiotic –stocking density
growth performance – feed utilization
F.
Khalil
1
Animal Production Dept., Faculty of Agric., Al-Mansoura Univ., Al-Mansoura, Egypt
AUTHOR
A.
Mehrim
2
Animal Production Dept., Faculty of Agric., Al-Mansoura Univ., Al-Mansoura, Egypt
AUTHOR
A.
Abdalqadir
3
Animal Production Dept., Faculty of Agric., Al-Mansoura Univ., Al-Mansoura, Egypt
AUTHOR
ORIGINAL_ARTICLE
EFFICACY OF DIFFERENT COLLECTION TECHNIQUES ON YIELD AND QUALITY OF EGYPTIAN BUFFALO OOCYTES.
Buffaloes ovaries obtained from slaughterhouses were used to study the influence of the oocyte collection techniques (dissection, aspiration, slicing, and aspiration plus slicing) on the availability of oocytes quantity and quality of buffalo oocytes. The oocytes were collected aseptically from the ovaries by the four methods. In all methods, oocytes were classified into 5 classes on the basis of the morphology of compact, denuded, degenerated, expanded and partial denuded oocytes. Results showed that the oocyte recovery rate from ovaries was higher (P<0.05) by aspiration plus slicing (84.67%) and slicing (83.30%) than aspiration (72.68%), while dissection technique showed the lowest (P<0.05) oocyte recovery rate (52.04%). Percentage of cumulus oocyte complexes collected by slicing (63.17%) was higher (P<0.05) than aspiration (51.34 %), aspiration plus slicing (51.24%) and dissection (42.03%). The corresponding percentages of expanded cumulus oocytes were 29.93, 30.31, 27.55 and 32.68%, respectively (P<0.05). Such results may indicate efficacy of slicing technique as a collection method on quantity and quality of buffalo oocytes.
https://jappmu.journals.ekb.eg/article_70526_88290f77ed88f90b11b71074ee1f386c.pdf
2014-07-01
413
422
10.21608/jappmu.2014.70526
Buffalo
oocytes
collection method
recovery rate
categories
E.
Hammad
1
Anim. Prod. Dept., Fac. Agric., Tanta Univ., Egypt.
AUTHOR
Sh.
Gabr.
2
Anim. Prod. Dept., Fac. Agric., Tanta Univ., Egypt.
AUTHOR
I.
El-Ratel
ibrahim.talat81@yahoo.com
3
Biotech. Dept., Anim. Prod. Res. Inst., Agric. Res. Center, Egypt.
AUTHOR
Maha
Gad
4
Anim. Prod. Dept., Fac. Agric., Tanta Univ., Egypt.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF SOME CHELATING AGENTS ON BALANCE AND TISSUE DISTRIBUTION OF ESSENTIAL TRACE ELEMENTS IN TILAPIA FLORIDA
Three chelating agents, being EDTA, thiamin and ascorbic acid were tested for balance and tissue distribution of four essential trace elements, mainly, copper. zinc, iron and manganese, in Tilapia Florida. Essential trace element balance was less affected by thiamin administration. Thiamin produced minimum alterations in the tissue levels of essential trace elements. Alterations produced by EDTA were more pronounced than those occurred with ascorbic acid and thiamin. Copper, zinc and iron levels in all tissues were drastically depleted by EDTA. The present results suggested that thiamin had the best efficacy as a metal chelating agent.
https://jappmu.journals.ekb.eg/article_70527_37fc0419ec3339219d3986c64091366a.pdf
2014-07-01
453
458
10.21608/jappmu.2014.70527
Tilapia Florida – Chelating agents – Trace elements