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J Therm Biol 2021 Apr 30;97:102867. Epub 2021 Jan 30.

Department of Veterinary Parasitology, LUVAS, Hisar, 125004, Haryana, India. Electronic address:

Heat stress is an important environmental determinant which adversely affects the performance of poultry worldwide. The present communication reviews the impact of heat stress on production, reproduction and growth performance of poultry, and its alleviation using genetic strategies. The adverse effects of high environmental temperature on poultry include decrease in growth rate, body weight, egg production, egg weight, egg quality, meat quality, semen quality, fertility and hatchability, which cause vast financial losses to the poultry industry. Read More

New Phytol 1996 Jan;132(1):77-85

Department of Biological Sciences, University of Windsor, Windsor, Ontario N9B 3P4, Canada.

In the evergreen desert shrub. Thymelaea hirsuta (L.) Endl. Read More

New Phytol 1999 Sep;143(3):547-559

1 Department of Theoretical Production Ecology, P.O. Box 430, NL-6700 AK Wageningen, The Netherlands.

To clarify the role of seasonal change, competitive response and nutrient availability in the competitive asymmetry of grassland species a competition experiment was conducted on Holcus lanatus, Anthoxanthum odoratum and Festuca ovina, which represent a successional sequence of decreasing nutrient availability. Seven harvests were taken over two growing seasons. At each harvest the dry weight of plant parts, dead leaves, leaf area and plant height were measured. Read More

New Phytol 1998 Nov;140(3):439-449

Institut National de Recherche Agronomique (INRA), LEPSE, 2 place Viala, 34060 Montpellier, Cedex 01, France.

Swards of Dactylis glomerata cultivars (cvs) KM2 and Lutetia and of Lolium perenne cvs Aurora and Vigor were grown under full irrigation or prolonged summer drought (80 d) in a field experiment in the South of France. After irrigation was withheld, leaf extension rates of all cvs fell by 90% within 9-12 d, and rapid scorching of laminae followed. Tiller mortality at the end of the drought was very different in the cocksfoot cvs (4% for KM2 and 76% for Lutetia) and intermediate (41%) for both ryegrass cvs. Read More

Zoo Biol 2021 Apr 16. Epub 2021 Apr 16.

Conservation, Research, and Veterinary Department, Wildlife Reserves Singapore, Singapore, Singapore.

A fifth of all known species are currently classified as threatened in the wild: the rate of biodiversity loss is rapid, continuous, and mostly due to anthropogenic activities. To slow down this decline, the accurate estimation of demographic parameters for threatened species is critical. With this aim, zoo institutions play an important role, giving access to data on zoo-housed animals, which aids researchers working on species life-history traits and intrinsic factors influencing the fitness of both sexes, such as age. Read More