IMPACT OF ROYAL JELLY, GIBBERELLIC ACID AND TESTOSTERONE TREATMENTS ON SOME PRODUCTIVE, EGG QUALITY TRAITS AND ECONOMIC EFFICIENCY IN LOCAL CHICKEN STRAIN, DURING THE SUMMER SEASON OF EGYPT.

The experiment was carried out with a total of one hundred and fifty eggs, which were collected from a local chicken variety of southeastern Nigeria hens reared in a cage system. The objective of this study was to determine the phenotypic relationship between egg weight and the other egg quality traits. The mean values related to the external egg quality traits - egg weight (EW), egg length (EL), egg breadth (EB), egg shape index (EST), shell weight (SW) and shell thickness (ST) were 38.99 g, 49.98 mm, 36.66 mm, 0.73, 4.05 g and 0.34 mm respectively. The internal egg quality traits – albumen height (AH), albumen weight (AW), yolk height (YH), yolk weight (YW) and Haugh unit (HU) have the following mean values, 7.53 mm, 19.86 g, 16.80 mm, 12.62 g and 65.21 respectively. There were significant (P<0.01) positive phenotypic correlations between EW and EL, EW and EB, EW and SW, and between EW and all the internal quality traits except HU - which had a non significant (P>0.01) negative correlation. Significant negative correlation was found between EW and ESI. It was concluded that it was feasible to assess some egg quality traits through the egg weight. This is important in view of integrating the local chicken into egg laying breeding programs in Nigeria.

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EFFECT OF GIBBERELLIC ACID AND ROYAL JELLY INJECTION ON SOME PRODUCTIVE, REPRODUCTIVE AND PHYSIOLOGICAL TRAITS IN MATROUH CHICKENS STRAIN DURING SUMMER SEASON.

Journal of Productivity and Development ◽

10.21608/jpd.2020.106550 ◽

2020 ◽

Vol 25 (2) ◽

pp. 169-194

Author(s):

waheed ezzat ◽

Ahmed Rizk ◽

Hannan Mohamed ◽

Ibrahim Fathy

Keyword(s):

Gibberellic Acid ◽

Royal Jelly ◽

Summer Season ◽

Physiological Traits

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Effect of Supplementation of Multi Enzymes on Production Performance and Egg Quality Traits in White Leghorn Layers

THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY ◽

10.21887/ijvsbt.v12i2.3730 ◽

2016 ◽

Vol 12 (2) ◽

Author(s):

C. Pandian ◽

A. Sundaresan ◽

A. V. Omprakash

Keyword(s):

Egg Production ◽

Egg Quality ◽

Live Weight ◽

Economic Benefits ◽

Production Performance ◽

Feed Consumption ◽

Quality Traits ◽

White Leghorn ◽

Significant Difference ◽

Enzyme Supplementation

The present study was conducted to assess the effect of supplementation of Multi-enzymes with lysophospholipids on production performance of pure line White Leghorn layers. Body weights before and after the experiment did not differ significantly across the experimental diets. Irrespective of the dietary treatments, the birds gained 3.83 per cent of live weight relative to its initial body weight. Mean per cent Hen housed egg production was significantly (Pis less than 0.05) higher in diet supplemented with 0.10 MEC-L than other groups. Mean egg weight and average daily feed consumption during 25 to 35 weeks of age indicated no significant effect of enzyme supplementation. Average daily feed consumption per bird in control, 0.05 % and 0.1% multi-enzyme supplemented groups was 108.13, 105.66 and 107.67 g respectively and birds offered control diet recorded numerically more feed intake than enzyme supplemented groups. Comparatively low feed per egg was observed in 0.10 per cent group followed by 0.05 per cent group which offers economic benefits than control diets. However, the egg quality traits between different dietary enzyme supplementation groups showed no significant difference.

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