Photoperiodicity in cattle ii. The equatorial light environment and its effect on the coat of european cattle

Yeates N.T.M. (1957) Photoperiodicity in cattle ii. The equatorial light environment and its effect on the coat of european cattle. Australian Journal of Agricultural Research, 8 6: 733-739. doi:10.1071/AR9570733


Author Yeates N.T.M.
Title Photoperiodicity in cattle ii. The equatorial light environment and its effect on the coat of european cattle
Journal name Australian Journal of Agricultural Research   Check publisher's open access policy
ISSN 0004-9409
Publication date 1957-01-01
Sub-type Article (original research)
DOI 10.1071/AR9570733
Open Access Status Not yet assessed
Volume 8
Issue 6
Start page 733
End page 739
Total pages 7
Subject 1100 Agricultural and Biological Sciences
Abstract Thirteen European cattle have been maintained for periods of up to 21 months in a light environment artificially adjusted to provide 12 hr 50 min of light daily, so simulating the equatorial photoperiod. The initial coat reaction of several groups of these animals differed according to the season in which they entered the experiment. Thus transfers in the spring and autumn were followed by complete shedding; those in winter by a rapid partial shed; and those in the summer by rapid growth of hair. On adaptation to the new environment, however, all the groups eventually grew, and thereafter permanently maintained, a similar coat, characterized by intermediate length and furry appearance. The experiments show that the equatorial photoperiod eliminates the natural coat cycle of European cattle, and that it tends to maintain them in a heat-retaining type of coat.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 05 Jul 2016, 15:57:44 EST by System User