Animal Husbandry

Domestic duck production : science and practice by Peter Cherry, Trevor Morris

By Peter Cherry, Trevor Morris

It is a paper model of the profitable booklet on duck creation. geese are stored for revenue in a superb variety of situations in either temperate and tropical climates. Outlining the biology of the family duck, this ebook additionally combines the authors' enormous useful and medical adventure to supply quantitative descriptions of dietary and environmental results on turning out to be and breeding geese, in addition to useful recommendation on husbandry, housing and administration. it really is a vital source for duck practitioners, researchers, and scholars.

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Rearing birds on slatted flooring in accommodation less than 8 m wide, and with the long axis across the direction of the prevailing wind, either on hillsides or on stilts over water encourages both stack effect and cross ventilation. Where birds are reared in closed houses evaporative cooling can reduce air temperature and heat stress (see Chapter 4, this volume), but this can only be achieved at the expense of increasing water vapour pressure, reducing the opportunity for birds in hot humid climates to lose insensible heat through Fig.

However, depending on environmental conditions, ducks can modify their behaviour and extend their thermoregulatory range. In northern latitudes birds housed semi-intensively tolerate low daytime temperatures in outside pens by occasionally clustering together into ‘rafts’ to reduce heat loss and collectively ‘warming up’. In the hot and wet tropics access to bathing water allows birds to increase sensible heat loss and so tolerate high radiant temperatures and increased water vapour pressure. The ‘thermo-neutral zone’ (see Fig.

Small producers might consider arranging for a local veterinarian to regularly visit the accommodation to review overall hygiene and give advice on vaccination and similar matters. Only essential personnel should be allowed access to brooding and rearing accommodation. Everyone should wear protective clothing and footwear and wash their hands prior to entry. 44 Chapter 3 Litter materials such as green wood shavings and sawdust, rice hulls and chopped straw often contain more than 12% moisture on delivery.

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