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- Title
Laying performance in hens of two breeds testing soybean meal or rapeseed meal plus peas as protein feed.
- Authors
Halle, Ingrid
- Abstract
In hens' feed soybean extracted meal (SBM) was replaced by rapeseed (Brassica napus) meal (RSM) solvent extracted plus peas in order to investigate the effects on feed intake, laying performance and composition of eggs. A total of 460 laying hens (230 Lohmann Brown-LB/230 Lohmann Dual-LD) were used in the feeding study. The hens were allocated to four groups of 115 hens each. The hens were kept in pens (23 hens per pen) with five pens per group and fed for six laying months. The daily feed intake, the number of eggs related to the trial's days (laying intensity) and egg weight of LB hens was significantly higher compared with LD hens. While no effect of substituting SBM through RSM/peas in the diet was seen on laying intensity of all hens, the egg weight was decreased and the feed to egg mass ratio increased. The daily egg mass production was lower in the LB RSM/peas group compared with LB SBM hens and not significantly different between two LD groups. Eggs of LD hens showed a significantly higher percentage of egg yolk and a reduced proportion of egg white. The replacement of SBM by RSM/peas reduced the final body weight of hens. After slaughtering of ten hens per group a statistically higher body weight and proportion of carcass and breast meat of LD hens compared with LB hens was found. The replacement of SBM by RSM plus peas reduced the yield of breast meat in the LD hens. The change of the protein source led in hens to reduced fat content.
- Subjects
HENS; CHICKEN breeds; SOYBEAN meal as feed; RAPESEED products as feed; PROTEIN content of food; REPRODUCTION
- Publication
Landbauforschung, 2017, Vol 67, Issue 2, p25
- ISSN
2194-3605
- Publication type
Article
- DOI
10.3220/LBF1485445555000