| Literature DB >> 622576 |
R R Peters, L T Chapin, K B Leining, H A Tucker.
Abstract
Sixteen hours of light daily (114 to 207 lux) increased weight gains and milk yield 10 to 15% in Holstein cattle in comparison with cattle exposed to natural-length photoperiods (39 to 93 lux) of 9 to 12 hours. The weight gain was accomplished without increased consumption of feed. Manipulation of supplemental light may thus cause dramatic increases in food supplies from animals.Entities:
Mesh:
Year: 1978 PMID: 622576 DOI: 10.1126/science.622576
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728