Liver Damage and Supplemental Methionine Sources in the Diets of Mature Laying Hens

The Possibility of Using Watermelon Waste in Laying Hens Diets

In this experiment 240 Hy-Line (W-36) laying hens from 65 to 75 weeks distributed in 5 treatments and 4 replicates (12 birds per replicate) in a completely randomized design were used. The amounts of watermelon skin meal (WSM) used to set the treatments were 0, 0.5, 1, 1.5 and 2% in 1 to 5 experimental groups. The results showed that using WSM up to 2% significantly improved the performance and...

Effect of Methionine and Energy Level in High Protein Organic Diets Fed to Laying Hens*

The objective of a 2 × 2 factorial study with laying hens was to evaluate the effect of dietary energy and DL-methionine (Met) supplementation in a high protein but sulphur amino acid deficient organic diet for laying hens on egg production, egg quality, and N retention and N excretion in manure. The model trial was conducted with 72 Bovans Brown hens from 24 to 53 weeks of age, allocated to 4 ...

Performance of laying hens fed on practical diets containing different levels of supplemental biotin during the rearing and laying stages.

1. The effect of biotin supplementation of low-biotin practical diets during rearing and laying stages on performance was studied in White Leghorn-type laying hens. 2. Biotin supplementation during rearing did not have any apparent effect on the condition of the bird at point-of-lay or on subsequent laying performance. 3. Biotin supplementation during lay did not have any beneficial effect upon...

Influence of Supplemental 25-hydroxy- Cholecalciferol and Phytase on Production Performance of Laying Hens Fed Diets Low in Phosphorus

s of papers 11 42 Phosphorus efficacy of an E. coli phytase in young chicks. N.R. Augspurger*1, D.M. Webel2, X.G. Lei3, and D.H. Baker1, 1University of Illinois at Urbana-Champaign, 2United Feeds, Inc., Sheridan, IN, 3Cornell University, Ithaca, NY. Three assays were done to investigate the phosphorus (Pi)-releasing efficacy of an E. coli phytase (ECP, produced by Phytex LLC), relative to Natup...

Effects of dietary protein levels and supplemental lysinge on performance of laying hens