Rearing cage type and dietary limestone particle size: I, effects on growth, apparent retention of calcium, and long bones attributes in Lohmann selected Leghorn-Lite pullets
Autor: | Tina M. Widowski, Elijah G. Kiarie, Tanka Khanal, Grégoy Y. Bédécarrats |
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Rok vydání: | 2020 |
Předmět: |
limestone particle size
Tibia bone chemistry.chemical_element Calcium Bone and Bones Calcium Carbonate Metabolism and Nutrition 03 medical and health sciences Animal science Animals Femur Tibia Particle Size housing 030304 developmental biology 2. Zero hunger 0303 health sciences long bone attribute pullet 0402 animal and dairy science 04 agricultural and veterinary sciences General Medicine rearing 040201 dairy & animal science Diet Mineral density chemistry Femur bone Female Animal Science and Zoology Particle size Cage Chickens |
Zdroj: | Poultry Science |
ISSN: | 0032-5791 |
Popis: | Effects of rearing cage type and dietary limestone particle size (LPS) on growth, apparent retention (AR) of nutrients, and bone quality were investigated. The treatments were arranged in a 2 × 3 factorial with cage (conventional, CON and furnished, FUR) and LPS (fine, < 0.595 mm, F; medium, 0.595 to < 1.68 mm, M; and 1:1 mixture of F and M wt/wt; FM). A total of 900-day-old Lohmann LSL-Lite chicks were placed in CON (20 chicks/cage) and FUR (30 chicks/cage) based on BW. The diets were formulated according to breeder's nutrient specifications for starter, grower, and developer phases. At the end of 4, 12, and 16 wk of age (woa), 2 pullets/cage were euthanized for samples. At 12 and 16 woa, 1 pullet/cage was transferred to metabolism cages for AR measurements. There was no interaction (P > 0.05) between cage type and LPS on response variables. At 4 woa, body (P = 0.002) and bone (P < 0.05) weight was higher for CON than FUR pullets, but this was reversed (P |
Databáze: | OpenAIRE |
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