Impact of Dietary Replacement of Inorganic Zinc by Organic or Nano Sources on Productive Performance, Immune Response and Some Blood Biochemical Constituents of Laying Hens

2018 ◽  
Vol 59 (1) ◽  
pp. 48 ◽  
Author(s):  
Mohamed ElKatcha ◽  
Mosaad Soltan ◽  
Mahmoud Arafa ◽  
karima ElNaggar ◽  
ElSayed Kawarei
Keyword(s):  
Immune Response ◽  
Laying Hens ◽  
Productive Performance ◽  
Biochemical Constituents ◽  
Blood Biochemical

Organic trace minerals on productive performance, egg quality and immune response in Bovans White laying hens

2019 ◽  
Vol 103 (5) ◽  
pp. 1484-1491
Author(s):  
David Ramos‐Vidales ◽  
Gabriela Gómez‐Verduzco ◽  
Arturo Cortes‐Cuevas ◽  
Juan Carlos del Río‐García ◽  
Sergio Fernández‐Tinoco ◽  
...  
Keyword(s):  
Immune Response ◽  
Laying Hens ◽  
Egg Quality ◽  
Trace Minerals ◽  
Productive Performance ◽  
Organic Trace Minerals ◽  
Organic Trace

scholarly journals Dietary Supplementation of Probiotic Lactobacillus acidophilus Modulates Cholesterol Levels, Immune Response, and Productive Performance of Laying Hens

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1588 ◽  
Author(s):  
Abdulaziz A. Alaqil ◽  
Ahmed O. Abbas ◽  
Hossam S. El-Beltagi ◽  
Hanaa. K. Abd El-Atty ◽  
Gamal M. K. Mehaisen ◽  
...  
Keyword(s):  
Immune Response ◽  
Lactobacillus Acidophilus ◽  
Laying Hens ◽  
Density Lipoprotein ◽  
Dietary Supplementation ◽  
Egg Yolk ◽  
Egg Mass ◽  
Productive Performance ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

This study examines the effect of dietary supplementation with Lactobacillus acidophilus (LA) on the cholesterol levels, immune response, and productive performance of laying hens. A total of 216, 40-week-old, commercial Hy-Line brown chicken layers were randomly assigned into four treatment groups (18 birds × three replicates per group) and fed diet supplemented with 0 (control), 1 × 109, 21 × 109, and 31 × 109 colony forming units (CFUs) of Lactobacillus acidophilus (LA) per kg of feed for six consecutive weeks. Results show that plasma triglycerides, low-density lipoprotein (LDL) and total cholesterols became lesser, while high-density lipoprotein (HDL) cholesterol became higher in LA-supplemented groups compared to the control. In addition, a significant reduction occurred in the liver and egg yolk cholesterol by LA supplementation. Moreover, the immunological parameters including antibody titer against sheep red blood cells (SRBCs), phytohemagglutinin (PHA)-wattle swelling test, and T- & B-lymphocyte proliferation were enhanced in laying hens supplemented with LA compared to the control hens. While the heterophil to lymphocyte (H/L) ratio decreased with LA supplementation, indicating low stress conditions in the treated hens. These positive effects for LA were further reflected on the productive performance of laying hens and improved egg production, egg weight, egg mass, and feed efficiency. Our findings indicate that LA probiotic could be recommended in laying hens’ diets for lowering egg yolk cholesterol with positive impacts on health and performance.

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

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