Results 31 to 40 of about 110,017 (308)

Effect of Feed Restriction and Photoperiod on Reproduction and LEPR, MELR mRNA Expression of Layers [PDF]

Brazilian Journal of Poultry Science, 2019
Photoperiod and nutrition are major factors that affect the reproductive efficiency particularly in female animals. In this study we examined the interaction of photoperiod and food restriction on growth, sexual maturation and receptor mRNA expressions ...
E HAO, H Chen, S Ge, R Huang
doaj   +1 more source

Varietal diversity of Sri Lankan traditional rice based on sensitivity to temperature and photoperiod at vegetative stage [PDF]

, 2019
Photoperiod and temperature are two important environmental factors affecting vegetative growth and yield of rice. The varietal diversity based on the response to temperature and photoperiod during vegetative growth was determined in a core collection of
Seneweera, Saman, Rathnathunga, Elpitiya Udari Uvindhya, Geekiyanage, Sudarshanee, Senanayake, Gamini   +3 more
core   +1 more source

Effects of intermittent lighting on broiler growth performance, slaughter performance, serum biochemical parameters and tibia parameters

Italian Journal of Animal Science, 2015
The objective of this study was to investigate the effects of intermittent lighting (IL) on broiler growth and slaughter performance as well as serum biochemical and tibia parameters.
Haiming Yang, Hao Xing, Zhiyue Wang, Jinlong Xia, Yan Wang, Banghong Hou, Jundong Zhang   +6 more
doaj   +1 more source

EFFECT OF LIGHTING DURATION ON REPRODUCTIVE PERFORMANCE OF RABBITS [PDF]

Journal of Animal and Poultry Production, 2008
A total number of 36 females and 12 males of New Zealand White rabbits were used in this study to investigate the effect of different lighting period on reproductive performance of female rabbits.
A. Ismail, Y. El-Hommosany, I. El-Wardany, Hoda, Gad,   +3 more
doaj   +1 more source

Effects of Continuous Light (LD24:0) Modulate the Expression of Lysozyme, Mucin and Peripheral Blood Cells in Rainbow Trout

Fishes, 2022
Continuous photoperiod is extensively used in fish farming, to regulate the reproductive cycle, despite evidence suggesting that artificial photoperiods can act as a stressor and impair the immune system.
Ariel Valenzuela, Ignacia Rodríguez, Berta Schulz, Raúl Cortés, Jannel Acosta, Víctor Campos, Sebastián Escobar-Aguirre   +6 more
doaj   +1 more source

Acclimation of circadian rhythms in woodland strawberries (Fragaria vesca L.) to Arctic and mid-latitude photoperiods

BMC Plant Biology, 2023
Background Though many abiotic factors are constantly changing, the photoperiod is a predictable factor that enables plants to time many physiological responses.
Corine Faehn, Michael Reichelt, Axel Mithöfer, Timo Hytönen, Jørgen Mølmann, Laura Jaakola   +5 more
doaj   +1 more source

Effects of short photoperiod on cashmere growth, hormone concentrations and hair follicle development-related gene expression in cashmere goats

Journal of Applied Animal Research, 2023
Shanbei White Cashmere goat is a typical goat species, the growth of cashmere is affected by photoperiod. To further investigate the effects of short photoperiod treatment on cashmere growth, hormone concentrations and hair follicle development-related ...
Junda Li, Guangjie Tian, Xingtao Wang, Hongyu Tang, Yuyang Liu, Hongran Guo, Chunxin Wang, Yulin Chen, Yuxin Yang   +8 more
doaj   +1 more source

Photoperiodism and Diapause in Insects [PDF]

Nature, 1949
DURING the past five years, work has been in progress at Rothamsted on rearing in the laboratory a number of plant-feeding insects. One of the aims has been to maintain supplies of insects in large numbers throughout the year. This has necessitated a study of the factors affecting diapause, the quiescent phase in which most plant-feeding insect species
Way, M. J., Hopkins, B., Smith, P. M.
openaire   +2 more sources

Identification of Melatonin-Regulated Genes in the Ovine Pituitary Pars Tuberalis, a Target Site for Seasonal Hormone Control [PDF]

, 2008
The pars tuberalis (PT) of the pituitary gland expresses a high density of melatonin (MEL) receptors and is believed to regulate seasonal physiology by decoding changes in nocturnal melatonin secretion.
Davis, Julian R. E., Talbot, Richard, Dupre, Sandrine M., Loudon, Andrew S I; id_orcid, Waddington, D., Downing, A., Burt, D.W., Davis, Julian R E, Loudon, A.S.I., Talbot, R., Mouzaki, D., Davis, J.R.E., Downing, Alison, Lincoln, Gerald A., Mouzaki, Daphne, Dupré, S.M., Burt, Dave W., Lincoln, G.A., Waddington, David, Loudon, Andrew S. I., Dupre, Sandrine, Malpaux, Benoit   +21 more
core   +1 more source

Dawn and photoperiod sensing by phytochrome A [PDF]

, 2018
In plants, light receptors play a pivotal role in photoperiod sensing, enabling them to track seasonal progression. Photoperiod sensing arises from an interaction between the plant's endogenous circadian oscillator and external light cues.
Imaizumi, T., Toledo-Ortiz, G., Ganpudi, A., Ganpudi, Ashwin Laxminaranyan, Kubota, A., Halliday, K.J., Seaton, D.D.   +6 more
core   +1 more source