TY - JOUR
T1 - Relationship Of High Intensity Step-Up Lighting To Bone Ash And Growth Plate Closure Of The Tarso-Metatarsus In Turkeys
AU - Klingensmith, Phyllis M.
AU - Hester, Patricia Y.
AU - Elkin, R. G.
AU - Ward, C. R.
PY - 1986/9
Y1 - 1986/9
N2 - 1. The reduced lameness observed in turkeys reared in a high intensity step-up (HISU) lighting programme as compared to a low intensity step-down (LISD) lighting regimen cannot be explained by differences in the inorganic matrix of the bone, because the proportions of bone ash, bone ash calcium, and bone ash phosphorus did not differ between lighting programmes. 2. At 17 weeks of age, there was a significant difference in the proportion of closed growth plates in males reared on the HISU programme rather than on LISD lighting. 3. These results support the hypothesis that HISU lighting reduces lameness by promoting earlier growth plate closure of long bones.
AB - 1. The reduced lameness observed in turkeys reared in a high intensity step-up (HISU) lighting programme as compared to a low intensity step-down (LISD) lighting regimen cannot be explained by differences in the inorganic matrix of the bone, because the proportions of bone ash, bone ash calcium, and bone ash phosphorus did not differ between lighting programmes. 2. At 17 weeks of age, there was a significant difference in the proportion of closed growth plates in males reared on the HISU programme rather than on LISD lighting. 3. These results support the hypothesis that HISU lighting reduces lameness by promoting earlier growth plate closure of long bones.
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U2 - 10.1080/00071668608416907
DO - 10.1080/00071668608416907
M3 - Article
C2 - 3791022
AN - SCOPUS:0022784198
SN - 0007-1668
VL - 27
SP - 487
EP - 492
JO - British Poultry Science
JF - British Poultry Science
IS - 3
ER -