Egg weight responses of laying hens fed different concentrations of vegetable oil and linoleic acid

1992 ◽  
Vol 43 (2) ◽  
pp. 389 ◽  
Author(s):  
PF Mannion ◽  
AR Neill ◽  
M Brewster
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Olive Oil ◽  
Vegetable Oil ◽  
Laying Hens ◽  
Phase 1 ◽  
Egg Mass ◽  
Safflower Oil ◽  
Phase 2 ◽  
Egg Weight

The relationships between dietary fat content and dietary fatty acid composition and egg weight were investigated in two strains of laying hens. Six diets were fed in which the levels of readily absorbable fatty acids, including linoleic acid, were increased by the addition of up to 32.6 g kg-1 safflower oil. Two additional diets containing olive oil provided intermediate or high levels of readily absorbable fatty acids and a low level of linoleic acid. The diets were fed from 30 to 46 weeks of age (phase 1) and again from 54 to 70 weeks of age (phase 2) after an intermediate buffer period in which a diet low in both fat and linoleic acid was fed. The diets had no significant effect on feed intake, liveweight or egg mass output, although small differences in egg number occurred. Egg weight responded to increasing levels of safflower oil in the diet but not to similar levels of olive oil. These differences cannot be attributed to dietary energy or to the intake of nutrients other than those associated with the inclusion of vegetable oil. It is concluded that the linoleic acid component of safflower oil is responsible for the observed effects on egg weight. As judged by regression analyses the egg weight response was significant in only one strain, being linear in phase 1 and curvilinear in phase 2.

scholarly journals PSVI-3 Dietary supplementation with coated omega-3 fatty acids has positive effects on growth performance and nutrients digestibility in weaned pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 196-197
Author(s):  
Woo Jung Seok ◽  
Je min Ahn ◽  
Jing Hu ◽  
Dexin Dang ◽  
Yanjiao Li ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Growth Performance ◽  
Phase 1 ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Phase 2 ◽  
Omega 3 ◽  
Phase 3 ◽  
Linear Effect ◽  
Weaning Pigs

Abstract The objective of this study was to evaluate the effects of dietary supplementation of coated omega-3 fatty acid (n-3 CFA) by corn cob power silica on performance of weaning pigs. A total of 200 weaned pigs [(Landrace x Yorkshire) x Duroc, average initial body weight at 6.97 ± 1.22 kg] were randomly assigned to four experimental treatments in a 6-week experiment in 3 phases as follows: CON, basal diet; 2) 0.3CFA, CON + phase 1(0.3% n-3CFA), phase 2(0.2% n-3CFA), phase 3(0.1% n-3CFA); 3) 0.6CFA, CON + phase 1(0.6% n-3CFA), phase 2(0.4% n-3CFA), phase 3(0.2% n-3CFA); 4) 0.9CFA, CON + phase 1(0.9% n-3CFA), phase 2(0.6% n-3CFA), phase 3 (0.3% n-3CFA). Each treatment had 10 replicates with 5 pigs (three gilts and two barrows) per replicate. The data were analyzed using the GLM procedure of SAS as a randomized complete block design. Pen served as the experimental unit. Linear, quadratic and cubic polynomial contrasts were used to examine effect of dietary treatment with coated n-3FA in the basal diet. Variability in the data was expressed as the standard error of means and P< 0.05 was considered to statistically significant. Increasing the level of n-3CFA in the diet linearly increased ADG and G/F of pigs (Table 1). Increasing the level of n-3CFA showed a linear increment in the digestibility of DM (83.59, 84.38, 85.13, 85.89 %) whereas nitrogen digestibility (81.79, 82.38, 82.96, 83.64 %) showed a trend (linear effect, p=0.0594) at the end of experiment. The fecal lactobacillus count was increased (7.22, 7.27, 7.33, 7.35 log10cfu/g) with the increase in the supplemental level of n-3CFA (linear effect; p< 0.05). However, there were no differences in the concentration of serum haptoglobin, or fecal E. coli, Clostridium and Salmonella counts despite the increase in n-3CFA levels in the diet. Supplementation of the diet with coated n-3 fatty acids positively affected growth performance and digestibility of dry matter and nitrogen, and enhanced the count of lactobacillus in weaning pigs.

Effect of Dietary Vegetable Oil Supplementation on C18 Fatty Acids and Conjugated Linoleic Acid Production; An In vitro Fermentation Study

2013 ◽  
Vol 12 (6) ◽  
pp. 516-520 ◽  
Author(s):  
Julakorn Panatuk ◽  
Suthipong Uriyapongs ◽  
Chainarong Nawanukraw ◽  
Chirasak Phoemchala ◽  
Pitukpol Pornanake
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Vegetable Oil ◽  
Acid Production ◽  
In Vitro Fermentation

Novel experimental protocol to increase specific plasma nonesterified fatty acids in humans

2003 ◽  
Vol 284 (1) ◽  
pp. E18-E24 ◽  
Author(s):  
Carine Beysen ◽  
Abigail K. Belcher ◽  
Fredrik Karpe ◽  
Barbara A. Fielding ◽  
Emilio Herrera ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Olive Oil ◽  
Palm Stearin ◽  
Safflower Oil ◽  
Experimental Protocol ◽  
Plasma Nefa ◽  
Heparin Infusion ◽  
Nonesterified Fatty Acids ◽  
Abundant Fatty Acid ◽  
Low Dose Heparin

This study reports a novel protocol to increase plasma monounsaturated, polyunsaturated, and saturated nonesterified fatty acids (NEFA) in eight healthy volunteers (age 29–54 yr, body mass index 23–26 kg/m2). This was achieved by feeding small boluses of fat at different time points (35 g at 0 min and 8 g at 30, 60, 90, 120, 150, 180, and 210 min) in combination with a continuous low-dose heparin infusion. Olive oil, safflower oil, or palm stearin were used to increase monounsaturated, polyunsaturated, or saturated NEFAs, respectively. Plasma NEFA concentrations were increased for 2 h, when fat and heparin were given (olive oil: 745 ± 35 μmol/l; safflower oil: 609 ± 37 μmol/l, and palm stearin: 773 ± 38 μmol/l) compared with the control test (no fat and no heparin: 445 ± 41 μmol/l). During the heparin infusion, 18:1 n-9 was the most abundant fatty acid for the olive oil test compared with 18:2 n-6 for the safflower oil test and 16:0 for the palm stearin test ( P < 0.01). The method described here successfully increases several types of plasma NEFA concentrations and could be used to investigate differential effects of elevated individual NEFAs on metabolic processes.

scholarly journals Effects of phytase B on laying performance, eggshell quality and on phosphorus and calcium balance in laying hens fed phosphorus-deficient maize-soybean meal diets

2011 ◽  
Vol 56 (No. 9) ◽  
pp. 406-413 ◽  
Author(s):  
K. Żyła ◽  
M. Mika ◽  
S. Świątkiewicz ◽  
J. Koreleski ◽  
J. Piironen
Keyword(s):  
Soybean Meal ◽  
Calcium Level ◽  
Laying Hens ◽  
Breaking Strength ◽  
Control Diet ◽  
Egg Mass ◽  
Calcium Balance ◽  
Egg Weight ◽  
Eggshell Quality ◽  
Laying Performance

A study was conducted to evaluate the effects of dietary supplementation of phytase B (product of the Aspergillus niger phyB gene expressed in Trichoderma reesei) on feed intake, laying performance, eggshell quality, and on phosphorus and calcium balance in laying hens. Seventy-two, 40 weeks old Hy Line Brown hens were fed for 14 weeks the following four phosphorus-deficient (0.12% nonphytate phosphorus, NPP), maize-soybean meal-based diets: (1) calcium-deficient (2.8% Ca) control diet; (2) diet 1 + phytase B at the activity of 2.5&nbsp;acid phosphatase units (AcPU/kg); (3) control diet (3.8% Ca); (4) diet 3 + phytase B at the activity of 2.5 AcPU/ kg. Each dietary treatment was fed to 18 cages of hens, 1 hen/cage kept in individual cages. Hens fed the NPP- and Ca-deficient diets consumed more feed (P &lt; 0.01) and excreted less calcium (P &lt; 0.01) than those receiving P-deficient diets with the standard calcium level. There were no effects of calcium level on feed utilization, egg mass, egg weight, and eggshell breaking strength. Egg production, although numerically higher in hens fed low Ca diets with no enzyme added, failed to be significantly different due to the low number of hens investigated and therefore the measurement should be considered as preliminary and supplementary. Phytase B increased mean egg weight by about 7% in layers fed the NPP- and Ca-deficient diet (Ca &times; phytase B interaction, P &lt; 0.05), increased shell breaking strength, particularly at the standard calcium level, significantly enhanced amounts of calcium retained by layers and amounts of&nbsp; phosphorus retained by hens fed the Ca-deficient diets. Additionally, phytase B improved Ca retention at both dietary Ca levels and phosphorus retention in hens fed the Ca-deficient diets. Results of the study indicate that the efficacy of phytase B in NPP-deficient diets is strongly influenced by the dietary calcium level and the enzyme may modulate egg weight, eggshell quality, phosphorus and calcium retention in laying hens fed low-NPP, maize-soybean meal-based diets.

scholarly journals Production performance and egg quality of White Rock laying hens fed diets containing whole linseed

2020 ◽  
Vol 20 (1-2) ◽  
pp. 48-53
Author(s):  
H Khatun ◽  
MN Islam ◽  
MA Rashid ◽  
MY Ali ◽  
MSK Sarker
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Diet ◽  
Production Performance ◽  
Egg Mass ◽  
Feed Conversion ◽  
Egg Weight ◽  
Quality Aspects ◽  
Significant Difference

This study was conducted to know the production performance of laying hen by using different graded level of linseed. At 56 weeks of age, a total of 160 laying hens were raised up to 63 weeks of age. All hens were fed a basal corn soyabean meal diet. The experiment was allowed 4 dietary treatments (T0, no addition of whole linseed in the basal diet; T1,  addition of 5% whole linseed; T2, addition of 10% whole linseed and T3, addition of 15% whole linseed) with 5 replications and per replication contains eight hens. Egg production, feed intake, egg weight of each treatment was recorded. Egg samples were collected and analyzed for egg quality. The results showed that egg production and egg mass (kg) exhibited for all dietary treatment groups were unaffected (P>0.05) by feeding linseed to the laying hens. Feed Conversion Ratio (FCR) was found significant difference within the four dietary group (P<0.05). Egg quality aspects such as yolk weight, egg weight, HU and yolk index were not differed significantly (P>0.05) among treatments.  A trend for lower yolk weight was observed in birds fed 10% linseed, where as the highest yolk weight percentage was recorded in control diet. There was no statistical difference among the different diets for yolk index. The results of the present trial suggested that feeding linseed to the laying hens has no detrimental effects on egg production and egg quality. Bangladesh J. of Livestock Res. 20(1-2): 48-53, Jan-Dec 2013

scholarly journals Effects of Dietary Conjugated Linoleic Acid and Selected Vegetable Oils or Vitamin E on Fatty Acid Composition of Hen Egg Yolks

2019 ◽  
Vol 19 (1) ◽  
pp. 173-188
Author(s):  
Magdalena Franczyk-Żarów ◽  
Beata Szymczyk ◽  
Renata B. Kostogrys
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Vitamin E ◽  
Olive Oil ◽  
Conjugated Linoleic Acid ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Standard Diet ◽  
Egg Yolks

AbstractThe objective of this study was to produce eggs enriched with conjugated linoleic acid (CLA) and ameliorate their fatty acid profile using the appropriate combination of dietary CLA with or without vegetable oils (olive oil or rapeseed oil) and vitamin E. In Experiment 1, 25-week-old laying hens were randomly distributed into eight groups of nine. Birds were fed with a standard diet with four different levels of CLA (0.0, 0.5, 0.75, 1.0%) and vegetable oils (olive oil or rapeseed oil, both in the amount of 1.46%). In Experiment 2, hens were randomly distributed into 12 groups of nine. The same four levels of CLA with three doses of vitamin E (0, 150, 300 mg/kg of diet) were applied. In both experiments, eggs were collected twice (at 4 and 8 weeks) for fatty acid profiling using GCMS. The differences between treatment means were considered significant at P<0.05. CLA treatments significantly increased the content of CLA, saturated fatty acids (SFA), and significantly decreased the content of monounsaturated fatty acids (MUFA) in the egg yolk, whereas levels of polyunsaturated fatty acids (PUFA) were unaffected. The vegetable oils used did not prevent the negative effects of CLA effectively. Only after eight weeks of experiment 1 SFA levels were significantly lower, but MUFA levels were significantly higher in groups fed with rapeseed oil compared to groups fed with olive oil. In experiment 2, the addition of vitamin E to the hen diet did not have an essential influence on the lipid profile of egg yolks.

scholarly journals Effect of Vegetable Oil Fortified Feeds on the Content of Fatty Acids in Breast and Thigh Muscles in Broiler Chickens

2010 ◽  
Vol 79 (9) ◽  
pp. S21-S28 ◽  
Author(s):  
Tereza Krejčí-Treu ◽  
Eva Straková ◽  
Pavel Suchý ◽  
Ivan Herzig
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Soybean Oil ◽  
Olive Oil ◽  
Linolenic Acid ◽  
Vegetable Oils ◽  
Broiler Chickens ◽  
Flaxseed Oil ◽  
Thigh Muscles

The main objective of this work was to compare the effect of six vegetable oils added to feeding mixtures that were administered to broiler chickens on the content of major fatty acids in chicken meat. The experiment started with 90 one-day-old Ross 308 meat hybrid male chickens that were divided into six groups. Chickens were fed complete feeding mixtures for the prefattening (BR1), fattening (BR2), and post-fattening (BR3) of broiler chickens. The BR1 feeding mixture was administered to chickens aged 1-10 days, the BR2 feeding mixture was given from Day 11 to Day 30, and the BR3 feeding mixture was then administered until Day 42. The BR1 feeding mixture that was administered to all six groups during the first ten days of the experiment was supplemented with soybean oil. BR2 and BR3 feeding mixtures used to feed chickens aged 11-42 days were fortified with soybean oil (SO Group), rapeseed oil (RO Group), sunflower oil (SFO Group), flaxseed oil (FO Group), olive oil (OO Group), and evening primrose oil (EPO Group). The vegetable oils used differed by the composition of fatty acids, particularly by the content of oleic acid, linoleic acid, α-linolenic acid. The use of the above-described experimental diets in young broilers from Day 11 to 42 had a significant effect on the content of fatty acids in the fat from breast and thigh muscles. The content of α-linolenic acid in breast and thigh muscles of broilers that received the feed containing flaxseed oil (21.16 g/100 g of oil and 17.13 g/100 g of oil, respectively) significantly increased (p ⪬ 0.01). The highest content of linoleic acid (p ⪬ 0.01) in breast and thigh muscles was found in chickens that were fed the feed containing primrose oil (59.13 g/100 g and 51.71 g/100 g). A significant increase (p ⪬ 0.01) in the level of oleic acid was detected in both breast and thigh muscles of broilers that received olive oil fortified feed (52.44 g/100 g and 43.70 g/100 g of oil). No significant variation was found in the content of palmitic acid and palmitooleic acid. The levels of oleic acid, linoleic acid and α-linolenic acid in feeding mixtures correlated with those found in breast and thigh muscles (r = 0.88; 0.94 and 0.99; r = 0.99; 0.98 and 0.99).

Comparison of the Modulatory Influence of Maize and Olive Oils and Butter on Metabolic Responses to Endotoxin in Rats

1995 ◽  
Vol 88 (1) ◽  
pp. 59-66 ◽  
Author(s):  
H. T. Besler ◽  
R. F. Grimble
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Olive Oil ◽  
Metabolic Response ◽  
Tissue Protein ◽  
Synthetic Rate ◽  
Zinc Concentrations ◽  
Lung And Kidney ◽  
Maize Oil

1. n-3 polyunsaturated fatty acids decrease responses to cytokines and inflammatory agents. The present study examines how different intakes of n-6 and n-9 fatty acids influence the metabolic response to endotoxin in Wistar rats. 2. Weanling male rats were, for 4 weeks, fed diets containing 50, 100 or 200 g/kg fat in the form of maize oil (rich in linoleic acid), butter (poor in linoleic acid, rich in oleic acid) or olive oil (adequate in linoleic acid, rich in oleic acid) or standard laboratory chow. All butter and olive oil diets included 10 g/kg maize oil, in total fat, to avoid essential fatty acid deficiency. 3. Rats subsequently received 800 μg/kg Escherichia coli endotoxin or sterile saline subcutaneously. Twenty-four hours after injection, the rate of tissue protein synthesis was measured in liver, lung, kidney, tibialis muscle and spleen by the ‘flooding dose’ method. Protein and zinc concentrations were assayed in all tissues and serum albumin and caeruloplasmin measured. 4. In animals fed chow, protein synthetic rate increased by 18%, 29% and 27% in liver, lung and kidney respectively. Tissue zinc concentrations increased by 33% in kidney, and tissue protein increased by 17%, 23% and 17% in liver, lung and kidney respectively. Serum caeruloplasmin increased by 60% and albumin concentration fell by 14%. 5. In animals consuming the 50 g/kg maize oil diet, protein synthetic rate increased by 56%, 36% and 34% in liver, lung and kidney respectively. Tissue zinc concentration increased by 14%, 15% and 17% in the three tissues respectively, and tissue protein concentration increased by 7%, 9% and 51% respectively. Serum caeruloplasmin increased by 172% and albumin concentrations fell by 22%. 6. No change in any parameter occurred in response to endotoxin in rats given diets containing fat predominantly as butter (50 and 100 g/kg), or olive oil (50, 100 and 200 g/kg). 7. In animals fed maize oil diets, responses increased in magnitude in parallel with dietary intake. 8. Responses in rats fed fat (200 g/kg) predominantly as butter were similar to those seen when diets contained 50 g/kg fat as maize oil. 9. The data suggest that the metabolic response to endotoxin is enhanced by n-6 and suppressed by n-9 unsaturated fatty acids. The modulatory influence of fats on responses to inflammatory agents may depend on the relative proportions of these substances.

scholarly journals Effect of Date Palm Pollen Supplementation on the Egg Production, Ovarian Follicles Development, Hematological Variables and Hormonal Profile of Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 69
Author(s):  
Mohamed Saleh ◽  
Dariusz Kokoszyński ◽  
Mohamed Abd-Allah Mousa ◽  
Ahmed Abdel-Kareem Abuoghaba
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Ovarian Follicle ◽  
Basal Diet ◽  
Ovarian Follicles ◽  
Control Group ◽  
Egg Mass ◽  
Egg Weight ◽  
Hormonal Profile ◽  
Ovarian Follicle Development

This experiment studied the effect of DPP supplementation in the laying hens’ diet on the ovarian follicle development, hematological variables and hormonal profile of laying hens. Eighty-four, 78-week-old, Lohman LSL hybrids layers were equally divided into four groups (4 groups × 7 replicates × 3 hens); hens in the 1st group were fed a basal diet (control), while those in the 2nd, 3rd and 4th groups, were fed on the same diet and supplemented with 1.25, 2.5 and 5.0 g DPP/kg diet. The results showed that the egg weight, egg mass and laying rate of laying hens treated with DPP levels were significantly increased compared to those of the hens in the control group. Egg weight, egg surface area, albumen quality and percentage of the yolk in treated hens significantly increased compared with controls. The increased DPP levels in laying hens‘ diet significantly (p < 0.05) increased WBC, Hb and TAC, while heterophil/lymphocyte (H/L ratio) significantly decreased. Additionally, the concentrations of FSH and LH and the weights of ovary and oviduct in the treated hens significantly (p < 0.05) increased compared with the control. In conclusion, the DPP supplementation in the hen diet significantly improved egg production, EW, H/L ratio, ovarian follicles, FSH and LH hormones concentrations.

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