Performance of laying hens fed on diets containing heat-treated beans (Vicia faba L. var. minor), cotyledons and hulls

1980 ◽  
Vol 95 (3) ◽  
pp. 697-701
Author(s):  
G. Olaboro ◽  
L. D. Campbell ◽  
R. R. Marquardt
Keyword(s):  
Heat Treatment ◽  
Vicia Faba ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
Body Weight Gain ◽  
Productive Performance ◽  
Egg Weight ◽  
Heat Treated ◽  
Vicia Faba L

SUMMARYTwo experiments were conducted to study the influence of heat treatment of Vicia faba beans on the productive performance of laying hens fed diets containing large proportions of the beans. In the first experiment, the effects of extruding and pelleting the beans were studied while in the second experiment the effects of autoclaving at 121 °C for 30 min the cotyledons and hulls of the beans were evaluated. Hyline-W36 layers were used in the first experiment while two strains (Shaver-288 and Dekalb) of birds were used in the second experiment. Each experiment lasted 5 months during which data on egg production, egg weight, feed intake, mortality and body-weight gain of birds were collected. The results obtained indicated that heat treatment (extruding, pelleting and autoclaving) of the beans, cotyledons and hulls had no beneficial effect on the productive performance of laying hens fed on diets containing large proportions of the heated beans, cotyledons and hulls. Egg-size reducing factors appeared to be concentrated in the cotyledons rather than the hulls of the beans.

USE OF FABABEANS IN DIETS FOR LAYING HENS

1980 ◽  
Vol 60 (2) ◽  
pp. 395-405 ◽  
Author(s):  
L. D. CAMPBELL ◽  
G. OLABORO ◽  
R. R. MARQUARDT ◽  
D. WADDELL
Keyword(s):  
Heat Treatment ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
Productive Performance ◽  
Depressing Effect ◽  
Feeding Trials ◽  
Methionine Supplementation ◽  
Series Of Experiments ◽  
Supplemental Protein

A series of experiments were conducted to evaluate fababeans as a source of supplemental protein for use in diets for laying hens. Experimental and commercial-type feeding trials were used to determine the influence of level of dietary addition of fababeans, methionine supplementation, heat treatment of fababeans and dehulling of fababeans on productive performance. When diets adequately supplemented with methionine were used, egg production rates of hens fed fababeans were similar to those of controls except for high dietary levels of fababeans (in excess of 25%) where a depression was indicated. Mortality rates were not influenced by addition of fababeans to the diet. Hens fed fababeans consistently laid eggs of a smaller size than those of controls and the extent of the egg size depression was related to the level of fababeans in the diet. The egg size depressing effect of fababeans was not related to dietary levels of protein or energy and was not influenced by heat treatment of fababeans or removal of hulls from fababeans. Fababeans can be used effectively as a protein source in diets for laying hens and the effect on egg size should be a factor given consideration when the choice to use fababeans is made.

Performance of laying hens as affected by the supplementation of a barley-based diet with a crude enzyme preparation from Trichoderma viride

1994 ◽  
Vol 74 (1) ◽  
pp. 129-133 ◽  
Author(s):  
J. Brufau ◽  
R. Cos ◽  
A. Pérez-Vendrell ◽  
E. Esteve-Garcia
Keyword(s):  
Water Consumption ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
Trichoderma Viride ◽  
Feed Consumption ◽  
Egg Weight ◽  
Crude Enzyme Preparation ◽  
Enzyme Supplementation ◽  
Enzyme Supplement

Two experiments were conducted to compare the performance of Leghorn hens fed a barley-based diet (68.93%) containing three levels of a Trichoderma viride enzyme supplement (0, 100 and 200 mg kg−1 as treatments T2, T3 and T4, respectively) with those obtained when fed a corn-based diet (Treatment T1). In exp. 1, 80 hens were used to determine performance during four 28-d periods, between 21 and 37 wk of age. Egg production, feed consumption, feed efficiency and egg weight of the hens were not affected by enzyme supplement and were similar to those of hens fed the corn diet (P > 0.05). There were also no significant effects on feed consumption per gram of egg or per bird per day (P > 0.05). There was a significant interaction for egg weight between enzyme addition and periods (P < 0.034), indicating that enzyme supplementation improved egg size in the early periods. In exp. 2, 20 hens were fed the same diets to measure water consumption and the ratio of water to feed consumption. Water consumption was not affected (P < 0.07) but the ratio of water to feed was significantly reduced (P < 0.0005) when enzyme was added to the barley-based diet. Water consumption in g d−1 was 172 for T1, 215 for T2, 211 for T3, and 195 for T4, and the water to feed ratios were 1.40, 1.85, 1.66, and 1.56, respectively. These results demonstrate that barley can replace corn in layer diets and that the addition of enzyme to barley-based diets appears to improve egg size and to reduce water consumption relative to feed intake in young laying hens. Key words: Laying hens, performance, water consumption, β-glucans, enzyme supplementation

UTILIZATION OF WHOLE TOWER RAPESEED BY LAYING HENS AND BROILER CHICKENS

1978 ◽  
Vol 58 (1) ◽  
pp. 55-61 ◽  
Author(s):  
S. LEESON ◽  
J. D. SUMMERS ◽  
S. J. SLINGER
Keyword(s):  
Weight Gain ◽  
Broiler Chickens ◽  
Egg Production ◽  
Laying Hens ◽  
Body Weight Gain ◽  
Control Diet ◽  
Dietary Treatment ◽  
Shell Quality ◽  
Heat Treated ◽  
Whole Seed

Laying hens received diets containing 10% Tower rapeseed which was fed either as raw whole seed, autoclaved whole seed or autoclaved and ground seed. Performance was measured over ten 28-day periods. Broiler diets contained 10 or 20% Tower rapeseed either as raw whole seed, dry-heated whole seed or autoclaved whole seed. Laying hens consuming 10% dietary raw whole rapeseed produced significantly (P < 0.05) more eggs than did birds fed an isocaloric, isonitrogenous corn–soybean meal control diet. Egg production of birds fed either the control diet, autoclaved whole rapeseed or autoclaved ground rapeseed was not significantly (P < 0.05) different. Birds fed rapeseed produced smaller eggs (P < 0.01), while those birds offered autoclaved ground rapeseed produced eggs with significantly (P < 0.05) superior shell quality compared to eggs from the control birds. Broiler chickens consuming raw rapeseed had larger thyroids than did control birds, while autoclaving, and to a lesser extent dry-heating, corrected this anomaly. Body weight gain to 4 wk of age was not influenced by dietary treatment, although birds eating 20% dry-heated rapeseed showed a significantly (P < 0.05) inferior feed intake:body weight gain in comparison to that calculated for control birds. It is concluded that whole Tower rapeseed can be well utilized by both broiler chickens and laying hens at inclusion levels of 10–20% and 10%, respectively, and that no advantages accrue from grinding the seed. For broiler chickens, there is an indication that rapeseed should be heat-treated.

HIGH-PROTEIN WHEAT IN DIETS FOR LAYING HENS

1978 ◽  
Vol 58 (2) ◽  
pp. 199-202 ◽  
Author(s):  
E. E. GARDINER ◽  
S. DUBETZ
Keyword(s):  
Dietary Protein ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
High Protein ◽  
Protein Diet ◽  
White Leghorn ◽  
Egg Weight ◽  
Protein Levels ◽  
Body Weights

High-protein wheat (21.0%) and regular-protein wheat (14.5%) were compared at two dietary protein levels with and without supplementary L-lysine. The diets were fed to White Leghorn laying hens maintained in floor pens for 44 wk. The addition of 0.3% L-lysine increased egg production from all diets, although the increase with the 17.4%-protein diet was not significant. L-lysine supplementation increased egg weight with the high-protein wheat diets but not with the regular wheat diets. Feed consumed per dozen eggs was lowest when hens were fed regular-protein wheat supplemented with L-lysine. L-lysine supplementation of the high-protein wheat in the 16%-protein diet reduced the amount of feed required per dozen eggs. Body weights of hens were not affected by L-lysine supplementation of the regular wheat diet; however, supplementation of the high-protein wheat diets resulted in increased body weights. The use of high-protein wheat in the diets that were not corrected for protein (i.e., 17.4%-protein diet) did not support high rates of lay, egg size, and body weight unless supplemented with L-lysine.

Assessing the performance response of laying hens to intake levels of digestible balanced protein from 27 to 66 wk of age

2018 ◽  
Vol 98 (4) ◽  
pp. 801-808 ◽  
Author(s):  
D. Kumar ◽  
C. Raginski ◽  
K. Schwean-Lardner ◽  
H.L. Classen
Keyword(s):  
Feed Efficiency ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
Response Criteria ◽  
Egg Mass ◽  
Egg Weight ◽  
Randomized Design ◽  
Performance Response ◽  
Completely Randomized Design

Laying hens continue to improve in egg production (EP) and feed efficiency (FE), and therefore, it is relevant to re-examine their digestible balanced protein (BP) requirements. From 27 to 66 wk of age, hens (Lohmann-LSL Lite) were fed diets designed to provide 550, 625, 700, 775, or 850 mg hen−1 d−1 of amino acid balanced digestible lysine (Dlys). Response criteria included EP, egg weight (EW), feed intake (FI), mortality, egg mass (EM), egg size classifications, FE (kg feed kg−1 EM), and lysine efficiency (LE; mg Dlys g−1 EM). The experiment was a completely randomized design, and data were analyzed using regression analysis. Differences were considered significant if P ≤ 0.05. Hen-day (HD) EP, EW, EM, FI, and LE increased and FE and mortality decreased in a quadratic fashion with increasing Dlys intake, while the proportion of cracked eggs increased linearly. Egg size classifications increased linearly (jumbo, extra-large) and quadratically (large) or decreased in a quadratic manner (medium, small) with increasing Dlys intake. Maximum HDEP, EW, and EM, and minimum FE were achieved at 769, 903, 836, and 839 mg hen−1 d−1 intake of Dlys, respectively. In conclusion, the digestible BP requirement of laying hens varies with response criteria.

ПРЕРЫВИСТОЕ ОСВЕЩЕНИЕ ПОВЫШАЕТ ЭФФЕКТИВНОСТЬ ИСКУССТВЕННОГО ОСЕМЕНЕНИЯ КУР В КЛЕТКАХ

2019 ◽  
Keyword(s):  
Reproductive Performance ◽  
Artificial Insemination ◽  
Egg Production ◽  
Laying Hens ◽  
Electric Energy ◽  
Productive Performance ◽  
Feed Conversion ◽  
Scientific Center ◽  
Academy Of Sciences ◽  
Egg Fertility

Intermittent Lighting Improves the Efficiency of Artificial Insemination in Cage Housed Laying Hens Kavtarashvili A.Sh., Kolokolnikova T.N. Federal Scientific Center “All-Russian Research and Technological Poultry Institute” of Russian Academy of Sciences Omsk Agrarian Scientific Center Summary: The effects of different lighting regimes on the oviposition schedule, productive performance, and reproductive efficiency in cage housed laying hens of layer parental flock (Hisex White-R) were studied; the reasonable regime of artificial insemination (AI) under intermittent lighting is proposed. It was found that intermittent lighting regime 1L:4D:4L:1D:4L:10D compared to the constant lighting significantly alters oviposition schedule: under this regime 82.3% of all daily eggs were laid until 9 am (vs. 66.6% in control). This regime and AI at 10 am improved the productive and reproductive performance compared to control (constant lighting 16L:8D and AI at 12 am): mortality by 1.9%, egg production per initial hen by 3.8%, egg weight by 1.1%, percentage of eggs suitable for incubation by 1.9%, egg fertility by 0.9%, hatchability by 2.3%, hatch of chicks by 2.9%, feed conversion ratio (kg of feed per 10 eggs) by 5.3%, the expenses of electric energy for lighting (per 1000 eggs suitable for incubation) by 54.5%. Key words: INTERMITTENT LIGHTING, CAGE HOUSED LAYERS, ARTIFICIAL INSEMINATION (AI), OVIPOSITION SCHEDULE, AI TIMING, PRODUCTIVE PERFORMANCE, REPRODUCTIVE PERFORMANCE

scholarly journals Fish by-product meal in diets for commercial laying hens

2017 ◽  
Vol 39 (3) ◽  
pp. 273
Author(s):  
André Ferreira Silva ◽  
Frank George Guimarães Cruz ◽  
João Paulo Ferreira Rufino ◽  
Waldo Mateus Plácido Miller ◽  
Nathália Siqueira Flor ◽  
...  
Keyword(s):  
Production Cost ◽  
Egg Production ◽  
Laying Hens ◽  
Polynomial Regression ◽  
Egg Quality ◽  
Feed Conversion ◽  
Egg Weight ◽  
Feed Cost ◽  
Randomized Design ◽  
Completely Randomized Design

 This study aimed to evaluate the increasing levels (0, 1, 2, 3 e 4%) of fish by-product meal in diets for laying hens on performance, egg quality and economic analysis. A total of 160 Dekalb White hens with 52-wk old were distributed in a completely randomized design with five treatments and four replicates of eight birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of fish by-product meal levels were determined by polynomial regression. Differences (p < 0.05) were detected for all variables of performance, in egg weight, yolk and albumen percentage, yolk and albumen height, feed cost and production cost, in which the inclusion of fish by-product meal in the diets showed better results. It can be concluded that fish by-product meal can be used in diets for hens as alternative feed, with better results in egg production, feed conversion, egg weight, yolk-albumen ratio and a reduction in feed cost and production cost. 

Modelling the egg components and internal cycle length of laying hens

2019 ◽  
Vol 59 (3) ◽  
pp. 420 ◽  
Author(s):  
H. C. P. Bendezu ◽  
N. K. Sakomura ◽  
E. B. Malheiros ◽  
R. M. Gous ◽  
N. T. Ferreira ◽  
...  
Keyword(s):  
Cycle Length ◽  
Egg Production ◽  
Laying Hens ◽  
Experimental Period ◽  
Experimental Unit ◽  
Egg Weight ◽  
Cycle Lengths ◽  
Predicted Values ◽  
Egg Components ◽  
Over Time

A model that can estimate the changes that occur to the composition of egg components over time is an important tool for the nutritionists, since it can provide information about the nutrients required by a laying hen to achieve her potential egg output. In this context, the present study was aimed to model the potential egg production of laying hens during the egg-production period. One hundred and twenty Hy-Line W36 and ISA-Brown layers were used from 18 to 60 weeks of age, with each bird being an experimental unit. The birds were housed in individual cages during the experimental period. Egg production (%), egg weight (g) and the weight of egg components were recorded for each bird. The data were used to calculate the parameters of equations for predicting the weights of yolk, albumen and shell, and for predicting internal cycle length. The predicted results were evaluated by regressing residual (observed minus predicted) values of the predicted values centred of their average value. The equations for predicting mean yolk weight with age are for Hy-Line W36 (y1) and ISA-Brown (y2) respectively. Albumen and shell weights for Hy-Line W36 were described by the equations 15.07 × (yolk weight)0.37 and 0.70 × (yolk + albumen weight)0.50 respectively, and for ISA-Brown, 21.99 × (yolk weight)0.24 and 1.60 × (yolk + albumen weight)0.34 respectively. The average internal cycle length over time for Hy-Line W36 (ICL1) is described by the model 22.95 + 5.24 × (0.962t) + 0.02 × t and for ISA-Brown by 24.01 + 10.29 × (0.94t) + 0.004 × t, where t is the age at first egg (days). The assessment of the results indicated that the equations for predicting egg weight were more accurate for Hy-Line W36 but less precise for both strains, whereas the equation models for predicting the internal cycle lengths were more accurate and precise for ISA-Browns. The models could predict the potential weight of egg components and the rate of laying associated with the internal cycle lengths, and, on the basis of this information, it is possible to improve the nutrient requirement estimated.

scholarly journals Effects on egg production and quality of supplementing drinking water with calcium and magnesium

2021 ◽  
Vol 51 (4) ◽  
pp. 469-476
Author(s):  
X.J. Yi ◽  
A. Rehman ◽  
R.W. Akhtar ◽  
A. Abbas ◽  
K. Hussain ◽  
...  
Keyword(s):  
Drinking Water ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Egg Weight ◽  
Calcium And Magnesium ◽  
Eggshell Colour ◽  
Haugh Unit

This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at random to four treatments, which consisted of CON: unsupplemented drinking water; T1: drinking water + 2 mg/L Ca + 250 mg/L Mg; T2: drinking water + 4 mg/L Ca + 510 mg/L Mg /10 L; and T3: drinking water + 5 mg/L Ca and 760 mg/L Mg. The experiment lasted six weeks. Water intake increased linearly in week 1 with the rising levels of Ca and Mg in the drinking water. Increasing the Ca and Mg levels improved eggshell strength (week 2 (P =0.01), week 5 (P =0.01), and week 6 (P = 0.03), and eggshell thickness (week 6) (P =0.02) and reduced the rate at which eggs were broken (week 4) (P =0.01). The supplemental Ca and Mg did not affect egg production, egg weight, Haugh unit, albumen height, eggshell colour, and yolk colour compared with CON. Nor did they influence the Haugh unit and albumen height after storing for 1, 5, 10 and 15 days. In conclusion, adding Ca and Mg to the drinking water increased the thickness and strength of the eggshells.

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