Growth and egg production of layer pullets can be affected by the method of supplying energy and protein sources
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, cilt.89, sa.11, ss.1963-1968, 2009 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 89 Sayı: 11
- Basım Tarihi: 2009
- Doi Numarası: 10.1002/jsfa.3684
- Dergi Adı: JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1963-1968
- Anahtar Kelimeler: layer pullet, nutrient source, growth, days to first egg, daily photoperiod, SEXUALLY-MATURING PULLETS, LAYING HENS, SELF-SELECTION, DIETARY MANIPULATIONS, LEGHORN PULLETS, BODY-WEIGHT, FEED-INTAKE, CHOICE, PERFORMANCE, CALCIUM
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
BACKGROUND: The effects of different methods of offering energy (ES) and protein (PS) sources on growth and egg production of layer pullets were assessed. From 9 to 22 weeks of age, 320 layer chickens (Isa Brown) were allocated to four treatments: 1, control (balanced diet); 2, E60:P40 (ES and PS in balanced diet sequentially during 60 and 40% of daily photoperiod respectively); 3, E40:P60 (ES and PS in balanced diet sequentially during 40 and 60% of daily photoperiod respectively); 4, EPFC (free choice between ES and PS in separate troughs).