This study aims to produce green zinc oxide nanoparticles (ZnO-NPs) derived from red seaweed (Pterocladia Capillacea) and evaluate their potential absorb Ismate violet 2R (IV2R) ions an aqueous solution. UV-vis spectrophotometry, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), a Brunauer-Emmett-Teller surface area analysis (BET) were used analyze the structural, morphological, optical features of synthesized nanoparticles. The...

The current perspective is a pioneering trial to assess the efficacy of dietary supplementation

This investigation was carried out to study mechanical eggshell traits (weight, specific gravity, thickness and breaking strength) ultrastructural properties from layer breeder hens at different ages (25, 47 61 weeks). The present results showed that the brown had significantly higher shell strength compared white eggshell. Concerning flock age, it could be noticed age of hen affected traits, where decreased as advance. With respect properties, effective (palisade %) ones. Opposite trend...

An experiment was conducted to evaluate egg quality and ultrastuctural measurements of eggshell using a Scanning Electron Microscope (SEM) in 2 lines (selected control) Japanese quail. A selection program applied over 22 consecutive generations for higher production lower broken percentage. The results revealed that the females selected line produced significantly (P < 0.01) mass compared control line. Also, procedure improved feed conversion ratio. eggshells had breaking strength those...

The recent breeding programs for livestock and poultry projects have aimed at maximizing productivity minimizing gross costs. It is well known that feed represents the main variable component affecting productive process. animal's requirements can be divided into needs maintenance requests. Consequently, reducing production costs through genetic improvements in residual intake (RFI). A bird consumes less than expected preservation has a negative (−RFI). This case desirable decreasing animal...

Fertility and hatchability are 2 major parameters that highly influence the reproductive performance of chicken breeds. The objective this study is to investigate how genetic background chickens affects aspects fertility, hatchability, embryonic mortality pattern. Six different native genotypes (black, black-barred, brown, gray, naked neck, frizzle) kept under similar conditions were evaluated. A total 1,645 fertile pedigreed eggs from all groups collected incubated in forced draft setter....

Better feed efficiency can be achieved by selecting rabbit genotypes with lower residual intake (RFI) under high ambient temperatures.Two of rabbits (Jabali, Saudi local breed and imported, Spanish V-line) were used to derive RFI investigate the relationship between productive traits. In total, 250 animals (125 each) housed in individual wire mesh cages a semi-closed rabbitry. Growth performance, criteria, carcass evaluation, biochemical blood analysis, immune responses...

Major genes could be introgressed into laying hens to attenuate heat stress. However, under cold and/or moderate ambient temperature, these might possess different behaviour. The main objective of this study was evaluate performance, immune response, and antioxidant status native segregating for naked neck (Na) frizzle (F) low temperature. Five genotypes were studied: homozygous (NaNaff), heterozygous (Nanaff), (nanaFF), (nanaFf), normally feathered (nanaff). raised temperature range...

The present study was conducted on pair aged commercial laying breeder strains (Hy-Line Brown and Hy-Line W-36) to evaluate genetic differences of eggshell bone quality. In addition, egg production performance, mortality rate, internal organs reproductive measurements were determined. Correlation coefficients among some traits calculated. White layer hens had significantly higher percentages hen-day hen-housed compared the brown one. strain better quality W-36 strain. white a relative...

This experiment was designed to study the effect of layer breeder strain and age chickens on absolute relative chick weight, tibia bone characteristics, percentage calcium phosphorus body weights. The present results showed that weight highly significantly affected by age. brown hens produced heavier compared white ones. Tibia width, thickness strength were strain, whereas chicks recorded higher values Concerning effect, it could be noticed all characteristics except breaking age, mid (at 47...

This study sought to evaluate the genetic variations of ovocalyxin-32 gene and its association with egg quality traits in indigenous chicken populations, focusing on exons 1 6. Genotype frequencies SNPs (G/T A/G) within these were assessed for their conformity Hardy–Weinberg equilibrium (HWE) across several strains. While most strains exhibited close adherence HWE expectations, some like light-brown gray indicated substantial discrepancies, particularly TT genotype, which points towards...

Egg quality and eggshell ultrastructural properties of four Saudi native chicken breeds were compared to detect genetic differences. A total 480 laying hens at 28 weeks age, representing (black, black-barred, gray, brown) kept under hot environmental conditions (34 ± 1°C) randomly assigned the current experiment. Laying housed in individual cages an open-sided house during summer season. 360 intact eggs collected (90 from each breed) for egg assessment. Eggshell samples prepared evaluate...

To analyze the improvement of carcass traits in some developed local chicken strains, crossbreeding experiments were carried out eight strains (basic flocks): Golden Montazah (GM), Matrouh (MAT), Mandarah (MN), Silver (SM), Bahig (BAH), Gimmizah (GIM), Mamourah (MAM), Sina (SIN).Carcass to either basic flocks, their crosses and reciprocal determined.The main results showed that, strain had significantly heaviest live body weight compared other strains; while, Mamourah, higher percentage...

his investigation aimed to evaluate the effect of two housing types (closed and semi-closed), broiler breeder age their interaction on performance during egg production (25-45 wks ofage), at a private local farm in Alexandria desert road.The results indicated that: Housing system significantly affected body weight which was heavier semi-closed compared closed system.No significant difference production, feed consumption period under system.Housing mortality rate percentage higher type.Body...

Background: The geese have several advantages over chickens. These birds are highly valued for its meat, also used to get rid of weeds as it was released in the fields, which cost raising low. In recent years, despite interest production, is important take cognisance fact that there a dearth information on carcass traits, and different effects age, gender their interactions characteristics geese. Therefore, objective current study aimed investigate effect traits (Anser anser). Methods: A...

Three hundred hatching eggs from two layer breeder flocks (Hy-Line Brown and hy-Line W-36; 150 each) were obtained at three different periods of laying cycle (early, middle late stages). The randomly taken to assess the impact chicken strain, age, time on some eggshell measurements structures. Results indicate that egg weight, shell percentage thickness significantly affected by incubation time. Increasing rate calcium absorption utilization embryos during embryonic stage clearly reflects...

The present experiment was designed to study effects of broiler strain and dietary level enzyme cocktail (PhytaBex® Plus), on productive performance, some blood plasma parameters lymphoid organs.A total 270 one-day old chicks (135 Avian 135 Cobb chicks) were distributed over six experimental groups according a (2 х 3) factorial design.There three different diets presented within each as; T1: fed basal diet (BD); T2: BD + PhytaBex® Plus (100 g/ ton) T3: (200 ton).Live body weight (LBW) daily...

This experiment was carried out to study the effect of ultraviolet light on growth performance, carcass, body organs, measurements, bone characteristics, blood parameters and behavioral status broiler chickens. A total 225 one-day-old chicks divided randomly into five treatments (3 pens per treatment with 15 birds pen). Three types; (LED, UVA or UVB) were followed, each group exposed 24 h light/day. The UVB traits turn for 5 h/day “UVA5 & UVB5” 10 “UVA10 UVB10”. Treatments distribution as...

his study was conducted to evaluate the effects of season (summer versus winter) at different ages on productive performance (body weight, feed consumption, mortality %, egg weight and production%) Hubbard classic broiler breeder's females during production period (25-45 wks).The birds were fed according program feeding producer company.The results revealed that there significant differences in betweentwo seasons periods.Body production% significantly higher winter than summer...