scholarly journals Selected quality traits of eggs and the productivity of newly created laying hen hybrids dedicated to an extensive rearing system

2017 ◽  
Vol 60 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Justyna Batkowska ◽  
Antoni Brodacki
Keyword(s):  
Body Weight ◽  
Rhode Island ◽  
Feed Intake ◽  
Egg Quality ◽  
Positive Impact ◽  
Laying Hen ◽  
Quality Traits ◽  
High Quality ◽  
Extensive System ◽  
Extensive Farming

Abstract. The aim of the study was to evaluate the usefulness of hybrids derived from Greenleg Partridge cocks and Rhode Island Red (GPR) hens for an extensive rearing system (RS), with special emphasis on high-quality table eggs. Newly created hybrids were compared to Hy-Line Brown (HLB) hens. The experiment was carried out with a total of 2400 hens. Both hybrid types (H's) were divided into two equal groups according to the rearing system: intensive (I) and extensive (E). The traits analysed in hens were body weight at the 8th, 16th, and 33rd weeks of age; laying production; and feed intake. At the 33rd week of a bird's age, egg quality was evaluated. The results of the study showed different reaction of the hybrids to the rearing system. This may confirm better usefulness of GPR for extensive farming and HLB hens for intensive methods of rearing. Furthermore, it can be concluded that the extensive system had a positive impact on the productivity of GPR birds.

scholarly journals Effect of laying hen genotype, age and some interior egg quality traits on lysozyme content

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Józefa Krawczyk ◽  
Lidia Lewko ◽  
Jolanta Calik
Keyword(s):  
Enzymatic Activity ◽  
Genetic Resources ◽  
Rhode Island ◽  
Egg Quality ◽  
Laying Hen ◽  
Quality Traits ◽  
Native Breed ◽  
Egg Albumen ◽  
Resources Conservation

AbstractThe objective of the study was to evaluate the quality of eggs laid by native breed hens of different ages (33 and 53 weeks of age), with particular consideration of the lysozyme parameters. Eggs were collected from 6 breeds/strains of laying hens under the genetic resources conservation in Poland, i.e. Greenleg Partridge (Z-11), Yellowleg Partridge (Ż-33), Rhode Island Red (R-11), Rhode Island White (A-33), Sussex (S-66) and Leghorn (H-22). The yolks of eggs from older hens had a more favourable, intense colour, but the freshness parameters (albumen height and Haugh units) of these eggs were lower. The albumen of eggs from older hens showed greater content and higher enzymatic activity of lysozyme in both thin and thick albumen. Among the six strains of hens, lysozyme content and enzymatic activity were highest in the egg albumen of strains Ż-33, Z-11 and R-11, and lowest in that of strain H-22. The analysed eggs showed statistically significant correlations between some interior egg quality traits (albumen weight, albumen height, Haugh units, yolk colour) and the discussed enzyme parameters. These traits are influenced by genotype and age of the hens.

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.

scholarly journals SAPU-SAPU FISH (Hyposarcus pardalis) AS A SINGLE PROTEIN SOURCE FOR LAYING MOJOSARI DUCKS

2016 ◽  
Vol 41 (3) ◽  
pp. 117-124 ◽  
Author(s):  
B. Indarsih ◽  
A. Asnawi ◽  
D. K. Purnamasari
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Egg Production ◽  
Egg Quality ◽  
Production Performance ◽  
Protein Source ◽  
Egg Mass ◽  
Final Body Weight ◽  
Egg Number ◽  
Single Protein

The present study was conducted to evaluate the optimum level of dietary inclusion and the form of feeding sapu-sapu fish (SSF) as a single protein source for feed components of small holder Mojosari duck farming. A total of 180 twenty four wk-old laying ducks were fed with two forms (sun-dried and ground-fresh) and three levels of SSF (10, 20 and 30%) from 24 to 32 wk of age. Experimental diets were formulated containing 105.1; 141.5 and 177.9 g/kg crude protein and 3078; 3065 and 3052 kcal metabolizable energy (ME) /kg diet. Production performance and egg quality were measured. The form of SSF had a significant effect (P<0.0001) on feed intake, egg production, feed conversion, egg mass and egg number except final body weight. No significant effects (P>0.05) were found on all of the performance parameters measured due to feeding levels of SSF except feed intake and final body weight. The interaction of form and feeding level was significant (P<0.05) on egg and body weights. Low performance and egg quality were observed in the birds fed a diet containing the dried SSF. It can be suggested that local ducks required 20% SSF as a single protein source for maximum egg production (41.2%) and total egg number per wk (3.1 eggs/bird/wk) during 8 wk of rearing period. Egg quality can be improved by feeding the fresh SSF. However, due to be sufficiently better processing technique, the dried SSF would be potential to replace the common fish for laying ducks.

CORRELATED RESPONSES IN EGG QUALITY TRAITS TO SELECTION FOR EARLY BODY WEIGHT IN MEAT-TYPE CHICKENS

1972 ◽  
Vol 14 (3) ◽  
pp. 477-482 ◽  
Author(s):  
V. Buvanendran ◽  
E. S. Merritt
Keyword(s):  
Body Weight ◽  
Egg Quality ◽  
Correlated Response ◽  
Quality Traits ◽  
Correlated Responses ◽  
Egg Weight ◽  
Shell Color ◽  
Blood Spots ◽  
Selection For ◽  
Meat Type

The correlated responses in egg quality traits to selection for high early body weight were studied in seven meat-type populations comprising five selected and two control lines. Traits studied were specific gravity, egg weight, albumen height, Haugh units, shell color, egg shape, shell roughness, wrinkling and asymmetry, and incidence of blood spots, meat spots and double yolks. Significant (P < 0.05 or < 0.01) correlated changes, as determined by the regression of correlated response (egg quality traits) on primary response (body weight), were obtained for egg weight, albumen height, Haugh units, asymmetry of shell and blood spots. All but blood spots increased with selection for high body weight. Shell color showed a consistent trend towards a darker color with increasing body weight. Scores for roughness of shell and, with one minor exception, the incidence of double yolks, also showed consistent trends (positive) with increasing body weight. Estimates of genetic correlations, derived directly from intra-line genetic analyses of the six pedigreed populations in the experiment, were in most cases in reasonable agreement with realized estimates.

scholarly journals Phenotype variability of external quality traits of fertile eggs of partridge Italian bread in semi extensive breeding system

2013 ◽  
Vol 29 (3) ◽  
pp. 477-482
Author(s):  
V. Djermanovic ◽  
S. Mitrovic
Keyword(s):  
Breeding System ◽  
Egg Quality ◽  
Reproductive Traits ◽  
Shape Index ◽  
Quality Traits ◽  
External Quality ◽  
Extensive System ◽  
Length Width ◽  
Research Show

In this paper results of research of external quality traits of the fertile eggs of Partridge Italian bread in semi extensive system are shown. Research was conducted on sample of 64 eggs, divided in to two groups according to the weight. First group was eggs weighing up to the 60 g (? 60 g) and second group eggs weighing above 60 g (> 60 g). Aim of the research was to determine influence of the weight of the eggs to the external quality traits of fertile eggs, such as weight, length, width and shape index of the eggs in quoted breeding system. Obtained result points to the fact that Partridge Italian in semi extensive system achieves satisfying results in regard of the basic external characteristics of egg quality. Results of the conducted research show that it is needed to give higher attention to the quality of eggs used for planting, to the breeding direction, improvement of the productive and reproductive traits, and therefore to preservation of the genetic potential of different breeds and strains of chicken.

scholarly journals Effect of Dried Tomato Pomace Feeding on Feed Intake, Body Weight Gain and Economic Efficiency of Rhode Island Red Grower Chicks

2013 ◽  
Vol 2 (4) ◽  
pp. 99-103
Author(s):  
Melkamu Bezabih Yitbarek
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Rhode Island ◽  
Economic Efficiency ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Tomato Pomace

This experiment was carried out to evaluate the effect of feeding Dried Tomato Pomace (DTP) with commercial ration on feed intake, body weight gain, feed conversion ratio (FCR) and economic efficiency of Rhode Island Red (RIR) grower chicks. A total of three hundred RIR grower chicks at the age of eight weeks were grouped into 20 pens of 15 chicks each, and randomly assigned to five treatments (control fed a commercial ration; 5% DTP;10% DTP; 15% DTP; 20% DTP). Birds fed on 5, 10, 15,and 20% DTP had the higher dry matter (DM) intake (72.93, 72.75, 72.98 and 73.15 g/bird/day) than the control group (72.10g/bird/day). The daily body weight gain of birds ranged from 13.3 to15.3 g/day, the highest being on birds fed on 5% DTP; The feed conversion ratio (FCR) of birds were 5.3, 4.8, 5.0, 5.3, and 5.5 for the control and for birds that consumed 5, 10, 15, and 20% DTP, respectively. The higher significant difference (p<0.05) was observed at 5%compaired with 20% DTP. The economic efficiency of the experimental diets was 1.35, 1.79, 1.80, 1.78, and 1.82 for a group fed on the control, 5, 10, 15, and 20% DTP, respectively. There was a higher significant (p<0.05) difference on a group fed on DTP and the control diet. 20% DTP brought the highest economic efficiency among the groups. Based on these results it could be concluded that dried tomato pomace could be incorporated at the level of 20% without any adverse effect on growth performance in order to increase the economic efficiency DOI: http://dx.doi.org/10.3329/ijns.v2i4.13286 International Journal of Natural Sciences (2012), 2(4) 99-103

scholarly journals Effect Of Supplementation Of Organic Acids On Laying Performance, Body Fatness And Egg Quality Of Hens

1970 ◽  
Vol 37 (2) ◽  
pp. 74-81 ◽  
Author(s):  
MS Rahman ◽  
MAR Howlider ◽  
M Mahiuddin ◽  
MM Rahman
Keyword(s):  
Body Weight ◽  
Organic Acids ◽  
Organic Acid ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Basal Diet ◽  
Feed Conversion ◽  
Egg Weight

The study was conducted to determine the effect of organic acids supplementation on body weight changes, feed intake, feed efficiency, egg production, egg weight and egg quality in laying hens at age between 67 and 74 weeks. A total of 48 Shaver 579 laying hens of 67 weeks age were allotted into 4 groups, each containing 12 hens. The hens were fed basal diet (17% CP and 2800 kcal ME/kg diet) supplemented with 0 (T1), 260 (T2), 520 (T3) and 780 ppm (T4) of organic acid mixture (fumaric acid and salt of butyric, propionic and lactic acids). The results revealed no effect of organic acids supplementation on body weight change and feed intake but improvement of egg production and feed conversion were observed. Organic acids supplementation significantly increased egg production by about 2.26, 8.0 and 9.84% on 260, 520 and 780 ppm respectively when compared with the untreated group (P<0.05). Feed conversion showed a significant (P<0.05) improvement in laying hen groups which fed on the basal diet supplemented with organic acids at 260, 520 and 780 ppm by about 1.85, 8.48 and 7.74% respectively when compared with the control. On the other hand, dietary organic acid had no effect on the average egg weight, while showed a lower percentage of large (P<0.05) and extra large egg (P<0.01) size compared with control group. Body composition parameters were not affected (P>0.05) by dietary treatments. Inclusion of organic acids improved egg shell thickness (P<0.05) while significantly reduced albumen index (P<0.05). Incorporation of organic acids attributed to significant increase per cent albumen (P<0.01) and significant decrease in yolk per cent (P<0.05). It can be concluded that organic acid supplementation of laying hens diet may improve persistency of lay and feed conversion. From economical point of view, it is concluded that organic acid addition (520 ppm) may result an economic benefit of layer production at older age. DOI: http://dx.doi.org/10.3329/bjas.v37i2.9884 BJAS 2008; 37(2): 74-81

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