scholarly journals The effects of limestone sources as calcium source on the performance and eggshell quality of laying chickens

2020 ◽  
Vol 36 (2) ◽  
pp. 256-263
Author(s):  
M. A. Tion ◽  
P. C. Njoku

Two hundred and twenty four pullets of shaver Star Cross 579 x Hubbard Golden Comet, that were 30 weeks of age and laying at 50% hen day production, were utilized in a completely randomized design to assess the suitability of limestone sources (procured from different cement factories) for laying hen performance and eggshell quality. Oystershell and bone meal were used in the control diet. Results showed that there were no significant (P>0.05) differences between the treatment mean values for initial body weight of chicken, egg production. Feed per dozen eggs. Eggshell thickness and eggshell percentage. However. Feed intake. Final body weight and egg weight varied significantly (P<0.05) among diets. Generally, diets that produced numerically higher rate of egg production resulted in significantly (P<0.05) smaller egg weights.

2016 ◽  
Vol 7 (2) ◽  
pp. 29-32
Author(s):  
Zulfan Zulfan ◽  
Sulaiman Ibrahim

ABSTRACT. The aim of this experiment is to investigate a possibility to include tofu by-product in broiler diet without causing adverse performances. This study was conducted in poulty production Lab. Faculty of Agriculture, Syiah Kuala University, Banda Aceh. The study performed 80 unsex day old chick, strain CP 707, Charoen Pokphan product, for which the chikens were divided into for diet treatment. The study was desingned into Completely Randomized Design (CRD) containing for different diet treatment. ei. R1 (Control diet with 0% of tofu by product. R2 (the diet containing 2.5% of tofu by-product), R3 (the diet containing 5% of tofu by-product, and R4 (the diet containing 7.5% of tofu by-product). Each treatment consisted of five chiks. Investigated variables included  final body weight, body weght gain, feed consumption, feed conversion, and income over feed and chick coast (IOFCC). The data were analyzed by an analysis of variance and as a significant effect was detected, the analysis  was continued by Duncan Multiple Range Test based on Steel and Torrie (1991). Result of this study showed that the inclusion of up to 5% of tofu by-product in the diet were not significantly defress body weight, body weight gain, feed consumpsion, and feed conversion compared to the control. However, the inclusion of 7.5% of tofu by-product significantly defress body weght, body weight gain feed consumpsion. The was no significant effect on feed conversion as tofu by-product was included 7.5% in the diet. The inclusion of tofu by-product could minmize diet cost and increase. Income and Over Feed and Chick Cost (IOFCC). However, the highest IOFCC was detected in the untilization of 5% of tofu by-product was still possible to be included in poulty diet up to 5% without significantly depress broiler ferformances.Key word :Tofu by-product; Broiler diet; Body weight; Feed Consumption; Feed conversion


2017 ◽  
Vol 38 (2) ◽  
pp. 1009 ◽  
Author(s):  
Grazielly Stefany Pinto Fontinele ◽  
Silvana Cavalcante Bastos Leite ◽  
Carla Nágila Cordeiro ◽  
Cláudia De Castro Goulart ◽  
Adailton Camêlo Costa ◽  
...  

The aim of this study was to evaluate the effects of vegetable glycerin on performance and egg quality of red-egg layers in the second production cycle. A total of 252 Hy-Line Brown layers weighing 1.919 ± 0.095 kg, at 90 weeks, were used in a completely randomized design with six treatments and seven birds per replication. The experiment lasted 84 days. Treatments consisted of a control diet (no glycerin) and five diets with increasing levels of vegetable glycerin (2, 4, 6, 8, and 10%). The following variables were evaluated: feed intake (g/bird/day); egg production (%); egg weight (g); egg mass (g/bird/day); conversion per egg mass (kg kg) and per dozen eggs (kg/dz); percentages of albumen, yolk, and shell; eggshell thickness (mm); and egg specific gravity. (Y = 67.69 + 54.23X, R2 = 0.78) and egg mass (Y = 44.84 + 42.87X, R2 = 0.66) improved linearly with the glycerin levels. A quadratic effect was observed (Y = 114.11 + 336.96 X – 3,169.6 X2, R2 = 0.52) on feed intake. In conclusion, glycerin can be used to partially replace corn in diets for layers in the second production cycle at inclusion levels of up to 10%.


2021 ◽  
Vol 32 (2) ◽  
pp. 253-260
Author(s):  
M.A. Tion ◽  
M.T. Orga ◽  
I. A. Adeka

One hundred and ninety two sexed broiler finisher chickens were utilized in a completely randomized design to test the dietary effects of calorie: protein ratio on the performance and carcass quality of Broilers raised 10-63 days of age. Sixteen birds (8 males and 8 females) per pen and 48 per diet were Assigned at random to 12 homogenous pens, each measuring 3.5 x 1.75m? in an open sided poultry house. Feed and water were offered ad libitum. Al the end of the feeding trial, 2 birds of each sex (4 birds/pen and 12/diet), which had their weighis close to the pen average, were selected for carcass evaluation. Processed birds had their abdominal and gizzard fats recovered and weighed. Results showed that calorie: protein ratio had no significant effect on all the performance traits measured. However, statistical analysis of mean values for feed intake and feed: gain ratio was close to attaining significant level at P<0.05. Carcass traits (final body weight, fat weight, and percentage fat) were however significantly (P < 0.05) affected by calorie: protein ratio. The study gives an indication that calorie: protein ratio as wide as 178:7 can be gainfully utilized in this country for finishing broilers to market weight > 2.0kg) in 63 days. 


1963 ◽  
Vol 43 (2) ◽  
pp. 290-293 ◽  
Author(s):  
J. R. Aitken ◽  
E. S. Merritt ◽  
H. E. W. Meyer ◽  
L. Griesbach

Three replicate trials were conducted to test the possibility that high mortality of non-specific origin being encountered in a genetic control strain of meat-type laying hens might be due to excessive energy intake. In each trial, the medium energy laying ration on which this strain of birds has been maintained for a number of years was compared with the same ration diluted with 20 per cent pulverized oat hulls, for a period in excess of 330 days.Mortality was not influenced by the energy content of the ration, nor was rate of egg production. The low energy ration reduced final body weight by only 0.1 to 0.2 pounds, suggesting that the birds on the control diet were not unduly fat. Comparison of these results with others reported in the literature leads to the speculation that mortality due to obesity may be a problem only in heavier and faster-growing strains than the strain used in this study.


2019 ◽  
Vol 44 (3) ◽  
pp. 277
Author(s):  
I. Sumantri ◽  
H. Herliani ◽  
A. N. Rajibi ◽  
R. Edriantina

The researchwas objected to study the effect of zeolite inclusion in aflatoxin B1 (AFB1) contaminated diet on the performance of laying duck. A completely randomized design was adopted in the in vivo experiment that consisted of 4 treatments, namely: (1) commercial feed (Control); (2) AFB1-contaminated feed 70 ppb (AFC); (3) Control + 2% zeolite; and (4) AFC + 2% zeolite. Each treatment had 4 replications with 4 ducks in each replication. A total of 64 eight months-female Alabio duck (Anas platyrinchos Borneo) were used in 28 days of the feeding experiment. Data were analyzed according to the general linear model of SPSS 21.0 statistical software. Results indicated that AFB1 exposure significantly (P<0.05) decreased the body weight of laying duck by 1.12%. Zeolite inclusion could prevent the adverse effect of AFB1 on body weight that increased by 2.95% in AFC+2% zeolite. Treatments had no significant effect on egg production and egg weight (P>0.05). Zeolite inclusion resulted in the highest final body weight whilst AFB1 diet without zeolite resulted in the lowest final body weight (P<0.05). Relative liver weight of duck fedAFC diet was 16.62% and to be 15.4% by zeolite addition in the diet. In conclusion, 2% of zeolite inclusion could reduce the adverse effects of AFB1 exposure on the performance of laying duck.


Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1601
Author(s):  
Doreen O. Anene ◽  
Yeasmin Akter ◽  
Peter C. Thomson ◽  
Peter Groves ◽  
Cormac J. O’Shea

Uniformity in hen and egg traits is an important consideration in commercial layer flocks. There is little information on how individual hen feed consumption and body weight affect egg quality measurements. This study investigated the variation in performance traits of individual hens and associations with egg quality characteristics. Four hundred and fifty-five ISA Brown caged hens in early lay were monitored for 42 days (25 to 30 weeks of age) to collect hen feed consumption and egg production measurements. Forty-four hens from the flock were randomly selected and eggs were collected from the same hen once weekly for albumen, yolk, and shell assessment. The means ± standard deviation of average daily feed intake (ADFI), albumen height, initial body weight (IBW), and final body weight (FBW) were 124 g ± 15, 10.3 mm ± 1.5, 1802 g ± 129, and 2000 g ± 175, respectively. Albumen height was not associated with ADFI (r = 0.18, p = 0.21), IBW (r = −0.04, p = 0.79), or FBW (r = −0.06, p = 0.69). This study showed variation in feed intake, body weight, and albumen quality of individual early-lay hens. Feed intake and body weight did not influence albumen quality.


2020 ◽  
Vol 45 (1) ◽  
pp. 106-114
Author(s):  
U. E. Ewa ◽  
K. U. Amaefula ◽  
A. H. Akinmutimi

Growth performance, carcass characteristics and economics of broiler chicken fed graded levels of raw Mucuna sloanei seed meal were investigated. A total of 150, 1- day old broiler chickens were used. There were five treatments each replicated into three with 10 birds per replicate in a completely randomized design. Five treatment diets were formulated. Diet 1served as control, while diets 2, 3, 4, and 5 had 5, 10, 15, and 20 %, respectively of raw mucuna seed meals (RMSM) added to them. The experiment lasted 49 days. The parameters considered were growth performance, carcass characteristics and economics of production. For growth performance, the result revealed that RMSM significantly (P<0.05) depressed growth as the levels of inclusion of RMSM increased from 0 to 20%. There were significant differences (p<0.05) in all the parameters considered under growth except for initial body weight and mortality. There was progressive loss in final body weight as the level of mucuna inclusion increased from 0% to 20%. Control recorded the highest live body weight of 3023.30g while, birds fed diet with 20% mucuna had the least body weight of 504.43g. Among the birds placed on the test diets, birds fed diet with 5% mucuna seed meal performed significantly (P<0.05) better (1840.00g) than other test diets. Birds fed diets with 10 and 15% mucuna had final body weight of 1180.00 and 726.67g, respectively. The progressive l oss in weight was obvious early in the experiment and at 8 weeks of age the broiler fed 20% raw mucuna. Mucuna sloanei based diet weighed only 504.43g (16.68% of the control) as against 1840.00, (60.86% of the control) for that fed 5%.mucuna. Percentage dressed weight and percentage breast and thigh were significantly (P<0.05) higher for chicken fed control diet. 10% level of raw MSSM gave highest value for drumstick (14.91%) while control gave the least (13.00%). 5% raw MSSM (27. 71%) compared favourably with control (30.60%) for breast cut. Gross margin significantly decreased from N1459.80 for control diet to N 14.20 for D5 as the percentage inclusion of MSSM increases from 0 to 20%. In conclusion, birds fed raw Mucuna sloanei seed meal diet could not compare favourably with those fed soya bean based diets even at 5% level of inclusion. Processing is therefore recommended to enhance performance.


2014 ◽  
Vol 1 (1) ◽  
pp. 35
Author(s):  
Andri Prajaka Santo ◽  
Untung Susilo ◽  
Gratiana E Wijayanti

The availability of fish seed is very important in fish propagation. Good quality of fish seeds were produced by a good brooder which characterized a large number of egg production at spawning. The aims of this research were to evaluate the oocytes development in the hard-lipped Barb (Osteochilus hasselti C.V.) given 17β-estradiol, different percentage of protein in the diet, and their combination. This research was conducted experimentally applying Factorial Completely Randomized Design. The first factor was percentage of protein in the diet consisted of 4 levels namely 25% (P1), 30% (P2), 35% (P3), and 40% (P4), the second factor was dose of 17β-estradiol benzoate (EB) consisted of 3 levels namely 0 µg/kg of body weight (D0), 126 µg/kg of body weight (D1), and 210 µg/kg of body weight (D2), thus there were 12 combinations of treatment with 3 replicates. The results showed that neither of protein proportion or 17β-estradiol affected the proportion of oocytes of any developmental stage (p>0,05) within the first two weeks post spawning. The treatments, however, significantly increased the proportion of oocytes at V3-V5, V6-V7, and post-vitellogenic stages (p<0,05) started at week 4th post spawning. The GSI increased in correlation to the proportions of oocytes at stage ≥ V6 (r=0,701; p<0,01) and the dose of 17β-estradiol (r = 0.357, p <0.05). There was no significant different on GSI amongst the experimental groups. The HSI tend to decrease as the dose of 17β-estradiol increased (r = -0.210, p> 0.05). In conclusion, the percentage of protein in the diet and different doses of 17β-estradiol improved oocyte development of Hard-Lipped Barb (Osteochilus hasselti C.V.).


2017 ◽  
Vol 9 (7) ◽  
pp. 155
Author(s):  
Marina De Paula Almeida ◽  
Evaristo J. Oliveira de Souza ◽  
Antonia Sherlânea C. Véras ◽  
Marcelo De Andrade Ferreira ◽  
Thaysa R. Torres ◽  
...  

The exploitation of dairy steers for meat production is an alternative to improve production rates, but feed alternatives to cereal grains like corn used in animal feed should be researched. In this study, we aimed to evaluate performance, carcass characteristics, and meat quality of dairy steers consuming different levels (0, 250, 500, 750, and 1000 g/kg, dry matter basis) of mesquite pod meal replacing corn. Twenty-five intact Holstein-Zebu dairy steers at approximately 18 months of age and with an initial body weight of 219±22 kg were used. A completely randomized design with five treatments (replacement levels) and five replications (animals) was adopted, and data were analyzed using PROC GLM for analysis of variance and PROC REG for regression analysis. There was no significant influence of the levels of replacement of corn by the mesquite pod meal as regards dry matter intake, final body weight, weight gain, carcass weight, or carcass yield (P > 0.05). The meat quality of the cattle was not significantly affected by the different levels of replacement (P > 0.05). Mesquite pod meal can fully replace corn in diets for dairy steers.


2016 ◽  
Vol 37 (3) ◽  
pp. 1515
Author(s):  
Dayanne Lima de Sousa ◽  
Patrícia Guimarães Pimentel ◽  
Elisabeth Mary Cunha da Silva ◽  
Elzânia Sales Pereira ◽  
Assis Rubens Montenegro ◽  
...  

This study aimed to evaluate the quality of meat of castrated and non-castrated Santa Ines lambs submitted to food restriction. Were used 30 lambs, 15 castrated and 15 non-castrated, about two months of age and average initial body weight of 13.00 ± 1.49 kg. The lambs were distributed in a completely randomized design in a factorial arrangement 3 x 2 (restriction level x sex class), according to the amount of food provided. The duration of the experiment was determined by the time required for the animals in the one of the groups achieved 28 kg of body weight. There was interaction between food restriction levels and sex class to the variables intensity of yellow color and pH in the longissimus lumborum muscle and the shear force in the semimembranosus muscle. In non-castrated animals, the intensity of yellow color was higher in the longissimus lumborum muscle at the level of 30% of food restriction. There was no significant interaction between food restriction levels and sex class for the quality aspects related to color saturation, color tone, luminosity, red intensity, water holding capacity and cooking losses in longissimus lumborum and semimembranosus muscles. Although food restriction and sex class have influenced the variables related to the quality of meat of the animals evaluated, the mean values are considered acceptable by the literature. The feeding restriction levels and sex class influence some important features of quality of Santa Ines lamb meat.


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