Photoperiod influences age at puberty of heifers.

Hansen, P J

Photoperiod influences age at puberty of heifers. [electronic resource] - Journal of animal science Oct 1983 - 985-92 p. digital

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.

0021-8812

10.2527/jas1983.574985x doi


Age Factors
Animals
Cattle--physiology
Estrus
Female
Lighting
Luteinizing Hormone--blood
Ovary--growth & development
Pregnancy
Pregnancy, Animal
Prolactin--blood
Seasons
Sexual Maturation