Effects of cerium oxide supplementation to laying hen diets on performance, egg quality, some antioxidant enzymes in serum and lipid oxidation in egg yolk

2016 ◽  
Vol 100 (4) ◽  
pp. 686-693 ◽  
Author(s):  
S. C. Bölükbaşı ◽  
A. A. Al-sagan ◽  
H. Ürüşan ◽  
M. K. Erhan ◽  
O. Durmuş ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Lipid Oxidation ◽  
Cerium Oxide ◽  
Egg Quality ◽  
Egg Yolk ◽  
Laying Hen

Dietary crude palm oil supplementation improves egg quality and modulates tissue and yolk vitamin E concentrations of laying hen

2019 ◽  
Vol 59 (8) ◽  
pp. 1491
Author(s):  
P. Areerob ◽  
W. Dahlan ◽  
K. Angkanaporn
Keyword(s):  
Adipose Tissue ◽  
Vitamin E ◽  
Palm Oil ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Egg Yolk ◽  
Laying Hen ◽  
Cholesterol Concentration ◽  
Crude Palm Oil ◽  
Yolk Cholesterol

Crude palm oil (CPO) is a valuable energy supplement for poultry diets and a rich source of vitamin A and E. Data on the effect of vitamin E tocotrienol in CPO on laying hen metabolism are limited. The present study examined the effects of dietary CPO supplementation on the performance and tissue distribution of vitamin E in laying hens and on egg quality. In total, 144 49-week old Hysex Brown hens were allocated randomly into four groups (36 per group), in single cages, and received corn–soybean basal diet supplemented with either lard at 20 g/kg (control), or CPO at 20 (CPO1), 30 (CPO2) or 40 g/kg (CPO3). Egg quality, hen performance, egg yolk cholesterol and hen tissue concentrations of vitamin E were examined. Dietary supplementation with CPO increased the egg yolk colour, egg and yolk weight compared with the control group, but not specific gravity, albumen quality, albumen weight and shell weight. Importantly, CPO supplementation significantly decreased egg yolk cholesterol concentrations (lowest level in the CPO3 group) and enhanced (P < 0.05) the total vitamin E tocopherols in CPO1 and total tocotrienols in CPO2 and CPO3. Hens fed on CPO3 had the lowest total tocopherol concentrations in their egg yolk and adipose tissue, but the highest tocotrienol in their plasma, egg yolk and adipose tissue. In addition, dietary CPO supplementation resulted in the highest deposition of tocotrienol in the hen’s adipose tissue compared with in the egg yolk, or hen’s liver and plasma. In conclusion, dietary supplementation with CPO improved the egg yolk weight and yolk colour, while it reduced the total cholesterol concentration and resulted in more vitamin E in the egg and hen’s adipose tissue, with increased concentrations of α-tocopherol, α-tocotrienol and γ-tocotrienol.

scholarly journals Egg quality and yolk lipid composition of laying hens fed diets containing cashew nut meal

2013 ◽  
Vol 33 (1) ◽  
pp. 172-179 ◽  
Author(s):  
Tatiana Fontoura Vidal ◽  
Ana Lúcia Fernandes Pereira ◽  
Virgínia Kelly Gonçalves Abreu ◽  
Ednardo Rodrigues Freitas ◽  
Manoel Alves Sousa Neto ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Egg Quality ◽  
Total Lipid Content ◽  
Egg Yolk ◽  
Cholesterol Content ◽  
Laying Hen ◽  
Total Solids ◽  
Fatty Acids Profile ◽  
Cashew Nut ◽  
Yolk Cholesterol

The objective of this study was to assess the effect of the addition of cashew nuts meal (0, 5, 10, 15, 20, and 25%) to laying hen diets on egg quality and yolk composition. The variables studied were: egg weight, specific gravity, Haugh Units, percentages of shell, albumen, and yolk, moisture, total solids, total lipids, fatty acids profile, and yolk cholesterol. The addition of up to 25% of cashew nuts meal to hen diets did not affect egg quality and freshness, moisture and total solids content. However, an increase in total lipid content and a decrease in yolk pigmentation was observed. Oleic acid level increased in the yolk, whereas palmitic, stearic, and linoleic acid levels decreased. The addition of cashew nuts meal increased the monounsaturated/saturated fatty acid ratio in the yolk and reduced the cholesterol content. Therefore, the use of cashew nuts meal in laying hen diets favorably modifies the fatty acid composition of egg yolk and contributes to a better acceptance of this food by consumers since it also reduces yolk cholesterol levels.

scholarly journals Pequi peel meal in laying hen diet

2016 ◽  
Vol 38 (2) ◽  
pp. 151 ◽  
Author(s):  
Amanda Lapa Silva ◽  
Romênia Regina Pires Lage ◽  
Daniel Emygdio de Faria Filho ◽  
Izabela Lorena Azevedo ◽  
Adélio Nunes Dias ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Laying Hen ◽  
The Other ◽  
Egg Mass ◽  
Feed Conversion ◽  
Randomized Design ◽  
Completely Randomized Design

This study evaluated the effect of pequi peel meal in the diet for laying hens on performance and egg quality. Hy-Line® Brown hens (n=160) aged 55 weeks with 1642±63g body weight were distributed in a completely randomized design with five treatments and four replications of eight birds each. The treatments consisted of isometric substitution of corn by pequi peel meal at 0, 2.5, 5.0, 7.5 and 10%. The performance and internal and external egg quality were evaluated. Egg production, egg mass and feed conversion worsened linearly with increasing replacement of corn with pequi peel meal, while the yolk color increased linearly. The other variables related to performance and internal and external egg quality were not significantly affected by the treatments. It can be concluded that the use of pequi peel meal replacing corn in laying hen diet does not change the internal and external egg quality, improves the pigmentation of egg yolk, and impairs performance of laying hens. 

Enrichment of conjugated linoleic acid (CLA) in the eggs of laying hens fed pure isomers of CLA or vaccenic acid

2006 ◽  
pp. 1-5
Author(s):  
Edison Muma ◽  
Samu Palander ◽  
Matti Näsi ◽  
Mikko Griinari
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Egg Quality ◽  
Vaccenic Acid ◽  
Complex Mixture ◽  
Egg Yolk ◽  
Laying Hen ◽  
Total Lipids ◽  
Total Fatty Acids

Conjugated linoleic acid (CLA) is a complex mixture of positional and geometric conjugated isomersof linoleic acid. Dairy products are the major dietary source of CLA and cis-9, trans-11 CLA (9,11CLA) is the predominant isomer resulting from the specific metabolism of feed derived fatty acids inthe rumen. Recent studies suggest endogenous synthesis of CLA by action of Δ-9 desaturase on trans-11 18:1 fatty acid (vaccenic acid, VA) is more important than ruminal production. In view of potentialhuman health benefits, several studies have attempted to enrich eggs with CLA by supplementing thediets of laying hen with mixtures of CLA. This has resulted in marked enrichment but also negativeeffects on egg quality and loss of hatchability of the eggs with concurrent increase in saturated fattyacid content in egg yolk. Such changes are consistent with Δ-9 desaturase inhibition especially associatedwith the presence of the trans-10, cis-12 CLA isomer (10,12 CLA) in the CLA mixtures. It istherefore worthwhile to determine which of the major CLA isomers present in the CLA mixtures, 9,11CLA or 10,12 CLA, is associated with the negative effects on egg quality. This was done by supplementingthe diets of laying hen with relatively pure forms of 9,11 CLA and 10,12 CLA. Furthermore,using relatively pure forms of 9,11 CLA and 10,12 CLA allowed us to determine the transfer efficiencyof 9,11 CLA and 10,12 CLA into egg yolk. In addition, endogenous conversion of VA to 9,11CLA in hens and deposition in egg yolk was examined.Experimental treatments consisted of diets supplemented with 0, 0.5, 1.0 and 1.5 g/d of CLA orVA. CLA isomer content (% of total fatty acids) of the materials was 83 and 7% (9,11 CLA), 9 and85% (10,12 CLA), 35 and 35% (Mix CLA) of 9,11 CLA and 10, 12 CLA, respectively. VA was suppliedin the form of dehydrated hydroxy stearic acid with trans-11 C18:1 content of 28%. The othermajor isomers in this product were cis-11, trans-12 and cis-12 C18:1 (28, 11 and 11%, respectively).There were three hens in each treatment and experimental diets were fed for 21 days. When dietswere supplemented with 9,11 CLA, 10,12 CLA and Mix CLA the transfer efficiencies (percentageof dietary CLA recovered in the egg) of 9,11 CLA and 10,12 CLA in egg yolk total lipids were 21 and<1%, 24 and 12%, 20 and 9%, respectively. Dietary VA was efficiently converted to 9,11 CLA anddeposited in the yolk. The slope of linear regression of VA plus 9,11 CLA versus 9,11 CLA in the eggyolk total lipids represents an estimate of the average conversion over the range of VA intakes studied.In this study 74% of VA available for desaturation was converted to 9,11 CLA. The transfer efficiencyof VA (percentage of dietary VA recovered as VA plus 9,11 CLA in the egg) was 14%. Dietary vaccenicacid in hens is efficiently converted to 9,11 CLA, but the overall efficiency of dietary VA use forCLA enrichment is quite low. Further studies examining the limitations of VA transfer to the liver andavailability for conversion by Δ-9 desaturase should be examined.

Effects of xylanase enzyme supplementation to corn/wheat-based diets on performance and egg quality in laying hens

2010 ◽  
Vol 90 (2) ◽  
pp. 207-212 ◽  
Author(s):  
Y. Cufadar ◽  
A Ö. Yıldız ◽  
O. Olgun
Keyword(s):  
Key Words ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Laying Hen ◽  
White Leghorn ◽  
Xylanase Enzyme ◽  
Enzyme Supplementation

This study was conducted to determine the effects of xylanase supplementation of corn/wheat-based diets on the performance and egg quality of laying hens. At 52 wk of age, 180 White Leghorn LSL laying hens were fed 15 diets, consisting of five corn:wheat ratios and three levels of enzyme. None of the treatments affected performance or egg quality, except for egg yolk index and egg yolk color. The egg yolk color was improved by the increase in dietary corn level. It is concluded that wheat can be used instead of corn as an energy feedstuff in laying hen diets. Key words: Egg quality, laying hen, performance, xylanase

scholarly journals Mitigation Effects of Bentonite and Yeast Cell Wall Binders on AFB1, DON, and OTA Induced Changes in Laying Hen Performance, Egg Quality, and Health

Toxins ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 156
Author(s):  
Ling Zhao ◽  
Yue Feng ◽  
Jing-Tao Wei ◽  
Meng-Xiang Zhu ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Liver Weight ◽  
Laying Hen ◽  
Egg Laying ◽  
Villus Height ◽  
Crypt Depth ◽  
Induced Changes

The objective of this study was to evaluate the efficacy of mycotoxin binders in reducing the adverse effects of co-occurring dietary aflatoxin B1 (AFB1), deoxynivalenol (DON) and ochratoxin A (OTA) on laying hens. Three hundred and sixty 26-week-old Roman laying hens were randomly allocated into four experimental groups with 10 replicates of nine birds each. The four groups received either a basal diet (BD; Control), a BD supplemented with 0.15 mg/kg AFB1 + 1.5 mg/kg DON + 0.12 mg/kg OTA (Toxins), a BD + Toxins with Toxo-HP binder (Toxins + HP), or a BD + Toxins with TOXO XL binder (Toxins + XL) for 12 weeks. Compared to the control, dietary supplementation of mycotoxins decreased (P < 0.10) total feed intake, total egg weight, and egg-laying rate, but increased feed/egg ratio by 2.5–6.1% and mortality during various experimental periods. These alterations induced by mycotoxins were alleviated by supplementation with both TOXO HP and XL binders (P < 0.10). Furthermore, dietary mycotoxins reduced (P < 0.05) eggshell strength by 12.3% and caused an accumulation of 249 μg/kg of DON in eggs at week 12, while dietary supplementation with TOXO HP or XL mitigated DON-induced changes on eggshell strength and prevented accumulation of DON in eggs (P < 0.05). Moreover, dietary mycotoxins increased relative liver weight, but decreased spleen and proventriculus relative weights by 11.6–22.4% (P < 0.05). Mycotoxin exposure also increased alanine aminotransferase activity and reduced immunoglobulin (Ig) A, IgM, and IgG concentrations in serum by 9.2–26.1% (P < 0.05). Additionally, mycotoxin exposure induced histopathological damage and reduced villus height, villus height/crypt depth, and crypt depth in duodenum, jejunum and (or) ileum (P < 0.05). Notably, most of these histological changes were mitigated by supplementation with both TOXO HP and XL (P < 0.05). In conclusion, the present study demonstrated that the mycotoxin binders TOXO HP and XL can help to mitigate the combined effects of AFB1, DON, and OTA on laying hen performance, egg quality, and health.

scholarly journals Effect of the Pellet and Mash Feed Forms on the Productive Performance, Egg Quality, Nutrient Metabolism, and Intestinal Morphology of Two Laying Hen Breeds

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 701
Author(s):  
Yi Wan ◽  
Ruiyu Ma ◽  
Anam Khalid ◽  
Lilong Chai ◽  
Renrong Qi ◽  
...  
Keyword(s):  
Feed Intake ◽  
Laying Hens ◽  
Egg Quality ◽  
Laying Hen ◽  
Intestinal Morphology ◽  
Production Performance ◽  
Apparent Digestibility ◽  
Villus Height ◽  
Nutrient Metabolism ◽  
Feed Form

One of the most important factors that determine feed utilization by chickens is the feed form. Although it is generally believed that pellet diets have a positive effect on chicken growth, there are some studies that have indicated no difference between pellet and mash on chickens performance. This study was conducted to assess the effects of feed form on production performance, egg quality, nutrient metabolism and intestinal morphology in two breed laying hens. Two hundred and sixteen 25-week-old Hy-Line brown (n = 108) and Hy-Line grey (n = 108) hens were selected. Each breed was randomly allocated into two treatments with 6 replications (9 birds in each replication), which were fed mash and pellet diets, respectively. Production performances were recorded daily and egg quality traits were measured every two weeks. At 42 weeks of age, one bird per replication from each experimental group was selected for metabolism determination and intestine morphology observation. Compared with mash diets, pellet diets improved laying rate (p < 0.05), ADFI (average daily feed intake, p < 0.05), egg weight, shell strength, yolk proportion and Haugh unit (p < 0.05) in both breeds and reduced the FCR (feed conversion ratio, p < 0.05) in Hy-Line grey. The apparent digestibility of DM% (dry matter) and CP% (crude protein) were significantly higher (p < 0.05) in both breed laying hens fed pellet than those fed mash. The apparent digestibility of P% (phosphorus) and Ca% (calcium) was higher in Hy-Line grey fed pellet and was higher in Hy-Line brown fed mash. Compared to mash diets, pellet diets increased the VH (villus height), CD (crypt depth) and VCR (ratio of villus height to crypt depth) of the small intestine of Hy-Line grey, and increased the VH and CD of duodenum and ileum of Hy-Line brown. Overall, pellet diets improved production performance and nutrition metabolism through positive changes in the laying rate, feed intake, egg albumen quality and apparent digestibility of laying hens. The current findings provided support for the advantages of feeding pellets during the peak egg laying period for the two popular laying hen strains, Hy-Line brown and Hy-Line grey.

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