Effect of a zinc amino acid complex on egg production, egg shell quality and external appearance in two laying hen genotypes housed in two different production systems
With an extended production cycle up to 100 weeks of age, the yearly number of layer chickens hatched and reared can be reduced, and in turn so can the euthanasia of day-old male chickens. Lately, the interest for keeping laying hens for a prolonged production cycle has increased in Sweden as wel...
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| Format: | H2 |
| Language: | Inglés |
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SLU/Dept. of Animal Nutrition and Management (until 231231)
2015
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