scholarly journals Performance and hematology of pacu fed diets supplemented with vitamins C and/or E

2011 ◽  
Vol 68 (3) ◽  
pp. 314-319 ◽  
Author(s):  
Fabiana Garcia ◽  
Fabiana Pilarski ◽  
Eduardo Makoto Onaka ◽  
Flávio Ruas de Moraes

Pacu (Piaractus mesopotamicus Holmberg, 1887) is a valued Brazilian fish species for aquaculture. This is highly susceptible to disease, and feed supplementations for pacu can be a very important strategy to prevent disease incidence in fish farms. The aim of this study was to evaluate a strategic supplementation for pacu. Juvenile pacu (10.5 ± 1.2 g) were fed diets containing three levels of vitamins C and/or E (0, 250, and 500 mg vitamin kg-1 diet). Fish were fed diets without supplementation for two months prior to the experiment. After that period, experimental feeding was initiated for two months. Growth and hematological evaluations were made on the thirtieth and sixtieth days of feeding. Pacu fed diet without supplementation of vitamins C and E during 120 days did not show clear typical signs of deficiency. Fish fed diet vitamins C and E free increased feed intake, but no improvement on growth performance was detected. Vitamin E proved essential for erythrocyte protection, so that the higher the level of this vitamin in diet, the smaller the number of erythroblasts. Supplementation with 500 mg of vitamin C and 250 mg of vitamin E for 60 days increased the production of monocytes, thrombocytes and special granulocytic cells in pacu.

2010 ◽  
Vol 55 (No. 5) ◽  
pp. 209-220 ◽  
Author(s):  
H. Imik ◽  
M. Aydemir Atasever ◽  
M. Koc ◽  
M. Atasever ◽  
K. Ozturan

This research investigates the effects of adding vitamin E, vitamin C, vitamin E+C, and alpha lipoic acid to feed rations for Japanese quails (Coturnix coturnix japonica) exposed to heat stress. The aspects studied were growth performance, carcass composition and breast meat characteristics. Five groups of quails, containing 50 birds each (250 Japanese quails: 150 female and 100 male) were used. The 21-days-old birds were fed for a period of 21 days, and they were kept in a controlled environment with a temperature of 34˚C between 08:00 and 17:00 and a temperature of 24˚C for the remaining part of the day. The five groups under study included: a control group without any additive (BS), a group fed diets with vitamin E (BSE), with vitamin C (BSC), with vitamin E+C (BSEC) and with lipoic acid (BSLA). The supplement additions to the diets did not affect the growth performance and carcass composition of the birds. The TBA (malonaldehyde) value of the BS group was significantly higher (P < 0.001) than in the other groups. L*, a*, and b* values in muscle samples, superficialis pectoralis muscle (SPM) and deep pectoralis muscle (DPM), were determined. In the samples from the SPM, the L* value of the BS group was higher than in the BSC group; the a* value of the BSE group was higher than in the BS group; and the b* value of the BSC group was higher than in the BS group (P < 0.05). In the samples from the DPM, the L* value of the BS group was higher than in the BSEC group (P < 0.05); the a* values of the BSE and BSEC groups were higher than in the BS group (P < 0.05); and the b* values of the BSC, BSEC and BSLA groups were higher than in the BS group (P < 0.01). In the microbiological analysis of meat, total aerobic mesophilic bacterial counts of the BS and BSE groups were higher than the counts in the BSC, BSEC, and BSLA groups (P < 0.01); coliform bacterial counts were higher in the BSE group than in the BSC group (P < 0.05); and lactic acid was higher in the BSE and BSEC groups than in the BSC and BSLA groups (P < 0.01). In conclusion, the supplemented antioxidants did not exhibit any significant effect on growth performance, but they significantly decreased lipid oxidation in the meat.  


2002 ◽  
Vol 63 (5) ◽  
pp. 673-676 ◽  
Author(s):  
Gonzalo Villar-Patino ◽  
Antonio Diaz-Cruz ◽  
Ernesto Avila-Gonzalez ◽  
Raquel Guinzberg ◽  
Jose L. Pablos ◽  
...  

2020 ◽  
Vol 60 (12) ◽  
pp. 1557
Author(s):  
Samira Zangeneh ◽  
Mehran Torki ◽  
Alireza Abdolmohammadi ◽  
Aliasghar Saki

Context Evaluating performance of broilers fed diet included feed additives in stress conditions. Aims This study was conducted to investigate the effects of adding lysophospholipids (LPLs) and vitamin C (VC) to diet on growth performance, blood metabolites, antioxidant capacity and carcass traits in broiler chickens reared under low ambient temperature Methods A total of 288 male chicks (Ross 308) were allotted to four treatments with six replicates (n = 12) when they were 1-day-old. Based on a 2 × 2 factorial arrangement, four diets including dietary LPLs (0 or 1000 mg/kg) and VC (0 or 500 mg/kg) were formulated. According to the catalogue of LPL product, 100000 kcal/Kg metabolisable energy was considered for LPLs. The house temperature was 32°C during the first week and 30°C for a second week. To induce cold stress, house temperature was decreased to 14°C by the step-down temperature program during the third week and maintained between 12 and 14°C for the rest of the study. Key results Increased feed intake and feed conversion ratio (FCR) were observed in chickens fed the LPL-supplemented diet during the first 2 weeks, but there was no significant difference in growth performance between the birds fed LPL-supplemented diet with control during cold stress condition. Decreased feed intake and bodyweight gain were observed in chickens fed VC-supplemented diet compared with control in cold stress condition. Dietary VC decreased blood concentration of triglyceride (TG) and very-low-density lipoprotein (VLDL). Decreased activity of superoxide dismutase (SOD) in breast muscle was observed in chickens fed VC-supplemented diet. A significant interaction between dietary LPLs and VC on relative weight and length of jejunum and ileum were detected. Comparable effects of LPLs and VC on inhibiting lipid peroxidation were observed. The free radical scavenging assay showed higher antioxidant activity of VC compared with LPLs. Conclusions Overall, dietary LPL supplementation did not improve broiler performance in cold stress condition, while the utilisation of 500 mg/kg VC in the ration reduced performance of broilers in low ambient temperature. Implications In low ambient temperature, adding 500 mg/kg VC to diet of broilers can be an effective to reduce blood concentration of TG and VLDL, with no adverse effect on FCR.


2011 ◽  
Vol 6 (9) ◽  
pp. 923-934 ◽  
Author(s):  
Miyase Cinar ◽  
A. Arzu Yigit ◽  
Ilkay Yalcinkaya ◽  
Ertan Oruc ◽  
Ozkan Duru ◽  
...  

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 170-171
Author(s):  
Robyn Thompson ◽  
Brandon Knopf ◽  
Carine Vier ◽  
Ning Lu ◽  
Wayne Cast ◽  
...  

Abstract Our objective was to evaluate the effects of different vitamin concentrations on growth performance of wean-to-finish pigs under commercial conditions. A total of 900 barrows and gilts (PIC337×Camborough; initially 5.34±0.13 kg) were used in a 136-d growth trial with 25 pigs per pen and 12 pens per treatment in a randomized complete block design. Experimental diets were fed in 3 phases during nursery (5-6, 6-13, and 13-26 kg) and 5 phases during grow-finish (26-44, 44-65, 65-87, 87-108, and 108-128 kg). Dietary treatments consisted of: 1) NRC: vitamin concentrations following NRC (2012) recommendations; 2) PIC: vitamin concentrations following PIC (2016) recommendations; 3) Low-PIC: vitamin concentrations that ranged from 0 to 91% of PIC recommendations. Data were analyzed using the GLIMMIX procedure of SAS with pen as the experimental unit. During the nursery period, pigs fed PIC and Low-PIC diets had greater (P< 0.05) average daily feed intake (ADFI) compared to pigs fed NRC diets. There was no evidence (P >0.10) for differences in average daily gain (ADG) and feed efficiency (G:F). During the grow-finish period, there was no evidence (P >0.10) for differences in growth performance. During the overall wean-to-finish period, pigs fed PIC diets had lower (P< 0.05) ADG and final body weight compared to pigs fed NRC and Low-PIC diets. There was no evidence (P >0.10) for differences in ADFI or G:F. Pigs fed PIC diets had the greatest serum vitamin D3 at the end of nursery and finish periods (P< 0.05) and the greatest serum Vitamin E at the end of nursery period (P< 0.05). In summary, pigs fed PIC and Low-PIC diets had greater nursery feed intake and serum vitamin E and D3 concentrations compared to pigs fed NRC diets. Data from this study have demonstrated that pigs fed diets with reduced vitamin concentrations compared to PIC (2016) recommendations had improved wean-to-finish growth rate.


Toxins ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 403
Author(s):  
Paraskevi Koletsi ◽  
Johan W. Schrama ◽  
Elisabeth A. M. Graat ◽  
Geert F. Wiegertjes ◽  
Philip Lyons ◽  
...  

The first part of this study evaluates the occurrence of mycotoxin patterns in feedstuffs and fish feeds. Results were extrapolated from a large data pool derived from wheat (n = 857), corn (n = 725), soybean meal (n = 139) and fish feed (n = 44) samples in European countries and based on sample analyses by liquid chromatography/tandem mass spectrometry (LC-MS/MS) in the period between 2012–2019. Deoxynivalenol (DON) was readily present in corn (in 47% of the samples) > wheat (41%) > soybean meal (11%), and in aquafeeds (48%). Co-occurrence of mycotoxins was frequently observed in feedstuffs and aquafeed samples. For example, in corn, multi-mycotoxin occurrence was investigated by Spearman’s correlations and odd ratios, and both showed co-occurrence of DON with its acetylated forms (3-AcDON, 15-AcDON) as well as with zearalenone (ZEN). The second part of this study summarizes the existing knowledge on the effects of DON on farmed fish species and evaluates the risk of DON exposure in fish, based on data from in vivo studies. A meta-analytical approach aimed to estimate to which extent DON affects feed intake and growth performance in fish. Corn was identified as the ingredient with the highest risk of contamination with DON and its acetylated forms, which often cannot be detected by commonly used rapid detection methods in feed mills. Periodical state-of-the-art mycotoxin analyses are essential to detect the full spectrum of mycotoxins in fish feeds aimed to prevent detrimental effects on farmed fish and subsequent economic losses for fish farmers. Because levels below the stated regulatory limits can reduce feed intake and growth performance, our results show that the risk of DON contamination is underestimated in the aquaculture industry.


2019 ◽  
Vol 18 (1) ◽  
pp. 480-487 ◽  
Author(s):  
Samantha Sigolo ◽  
Roshanak Khazaei ◽  
Alireza Seidavi ◽  
Antonio Gallo ◽  
Aldo Prandini

2013 ◽  
Vol 58 (No. 2) ◽  
pp. 91-97 ◽  
Author(s):  
M. Skřivan ◽  
M. Marounek ◽  
M. Englmaierová ◽  
V. Skřivanová

Two hundred and forty laying hens were fed diets supplemented with vitamin C and selenium (Se). Vitamin C was added at 0 or 200 mg/kg, and Se was added as sodium selenite or selenized yeast at 0.3 mg/kg. The feed intake and egg production were measured, and egg quality parameters were determined. Supplementation of the basal diet with Se significantly increased the laying performance; however, vitamin C significantly decreased feed intake and egg production. Vitamin C increased vitamin E concentration in the yolk. Both selenite and Se-enriched yeast increased the vitamin E concentration in the yolk and the Se concentration in the yolk and albumen. The oxidative stability of yolk lipids was improved in hens fed diets supplemented with sodium selenite, but not in those fed diets supplemented with Se-yeast. After 28 days of storage, however, the beneficial effect of selenite on lipid stability ceased. The supplementation of the basal diet with vitamin C significantly worsened the oxidative stability of yolk lipids, indicating that vitamin C acted as a pro-oxidant. Thus, vitamin C increased the laying performance and influenced some traits of egg quality. The combined supplementation of vitamin C and Se did not prove to be successful.


Sign in / Sign up

Export Citation Format

Share Document