The effect of genotype, lactic acid bacteria and their interaction on performance of two local layer hens
Abstract: This study was conducted to investigate the effect of genotype , dietary supplementation of probiotic (proniftr) and their interaction during the laying period elapsed between 36 and 48 weeks of age on performance of Bandara and Dokki4 local strains. A total number of 264 birds from the two strains ( I,e,132 Bandara and 132 Dokki4) at 36 weeks of age were used in this study .Four groups from each strain having nearly equal initial live weights were randomly assigned to 4 treatments. Each group was subdivided into three replicates of 11 birds each ( 10 hens and 1 cock). The first group served as a control fed on corn-soy basal diet (Ti), while the other groups were fed diets supplemented with 0.1 % Lactic acid bacteria (T2),0.15% Lactic acid bacteria(T3)and0.20% Lactic acid bacteria (T4). Birds were fed on the experimental diets along with 12 weeks experimental period. Criteria of response were recorded in terms of productive performance, egg quality, fertility and hatchability percentages, some physiological parameters and some blood constituents.
This trial led to the following results:
Strain had significant effect on egg weight, egg mass and feed conversion in favorite to Bandara strain. Also strain had significant effect on shell weight percentage, shell thickness (mm) and egg shape index, giblets percentage and liver percentage in favorite to Dokki4 . While, Strain had no significant effect on total egg production, egg production percentage and total feed intake. Bandara strain had significantly better plasma cholesterol values than Dokki4. While, Dokki4 strain decreased significantly in plasma total lipids. Bandara significantly recorded higher hatchability and chick weight than Dokki4. Dokki4 significantly better than . Bandara strain in fertility percentage.
Treatment had significant effect for all dietary treatments studied on total plasma protein and albumin compared to the control group. Total plasma lipids were decreased significantly by the addition of probiotic . levels compared with the control group. The group of T2 was the best
supplemented level for significantly lowering total lipids compared to the other treatments. The group of T3 revealed significant increase in total egg production ,egg production percentage and egg mass than the control group and the other treatments.
The interaction between strain and treatments indicated that egg production percentage . was significantly. improved by probiotic supplementation at 0.15% (T3) in both strains. While, egg weight, egg mass and feed conversion were significantly improved up to 0.15% (T3) pronifer inclusion level in Bandara compared with the other treatments. .Also, the interaction had significant differences among all dietary treatments for shell weight %, shell thickness and egg shape index. The best level for decreasing total lipids was 0.10% inclusion level of pro biotic in both strains. The total count of micro-organisms increased by increasing probiotic up to T3 dietary treatment in colon of hens compared with the control group. Colon pH decreased as the level of pronifer increased. .
Conclusion:
It could. be concluded that strain has effect in utilizing probiotic present in laying hens ration, where 0.15% (T3) inclusion level of probiotic in both strains gave the best laying performance results. .
Publication year 2007
Pages 165-183
Availability location معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
City الاسكندرية
serial title Egypt Poult. Sci. Vol (27) (I): (165-183)
ISSN 1110-5623
Author(s) from ARC
Agris Categories Animal physiology - Nutrition
AGROVOC
TERMS		 Genotypes. Lactic acid bacteria. Layer chickens. Performance testing. Probiotics.
Publication Type Journal
↑