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Archive for Juli, 2009

Brooding and rearing baby chicks

Kamis, 9 Juli 2009 1 komentar

Baby chicks are really quite easy to raise. With a few pieces of equipment and a small place to put them, success in brooding and rearing is virtually assured. During this period of the bird’s life, the most important needs are for warmth, protection, feed, and water. When growing chicks of any species-chickens, turkeys, pheasants, or almost any other production bird-each of these aspects must be considered.

Natural vs. artificial brooding

In nature, chicks hatch after 2 to 4 weeks of incubation by the parents, most often the hen. The hatched chicks provide the stimulus to the hen to change her work from incubating eggs to brooding young. This form of brooding chicks is the easiest if only a few chicks are raised because the mother hen does all the work.

Hens that are “good mothers” include Rhode Island Red, New Hampshire, Plymouth Rock, Cochins, and Silkies. Under natural brooding, chicks can easily be fostered under a broody hen at night, and she will raise them as her own even if they are pheasants, turkeys, quail, or waterfowl.

When broody hens are not available, or large numbers of chicks are to be raised, artificial brooding is necessary. Chicks will perform equally well under artificial or natural brooding, providing they are precocial; that is, able to walk and feed themselves within hours of hatching, as baby chickens are.

Novice growers are not advised to try artificial brooding for altricial chicks; that is, chicks such as pigeons, doves, finches, and parrots that remain in the nest to be cared for and fed by the parents. Many of these chicks are naked, blind, and unable to walk for several weeks after hatching and require around-the-clock care and feeding.

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Kategori:Perkuliahan

Study: Behavioural impact of cages on hens

Kamis, 9 Juli 2009 8 komentar

A Clemson University animal behaviourist is researching the impact cages and other confinement has on the development and well-being of hens.

“Cages were designed to keep hens clean, safe from predators, protected from adverse weather conditions and easily medicated to prevent disease,” said Peter Skewes, the department of animal and veterinary sciences researcher leading the 3-year project. “Initially, little thought was given to how cages affected behavioural or emotional needs.”

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Kategori:Lain-lain

Chicken Embryo Malpositions and Deformities

Selasa, 7 Juli 2009 7 komentar

Detailed information describing the categorization and incidence of embryo malpositions and deformities in commercial poultry is not readily available. Additionally, there is often little consistency in these data among hatcheries. Any decrease in the number of usable chicks may result in substantial economic loss to poultry integrations. In a typical hatch, it is common to lose about 1-2% of the chicks due to deformities and malpositions. Deformities manifest during the process of embryo development, while malpositions occur in the last week of incubation before hatch. At a commercial hatchery over a 5 year period, more than one-half million eggs had been broken out for quality control purposes and many thousands of unhatched embryos had been examined to determine the frequency of the various deformities and malpositions. The objective of this study was to determine the relative incidences of malpositions and deformities, and their economic impacts. Major factors affecting their occurrence will be explained. Obviously, in any population it is anticipated to encounter malpositions and deformities during embryonic development. However, the incidence must be within accepted limits and changes must be made when excessive losses occur.

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Kategori:Informasi

New Methods for Ensuring Food Safety

Kamis, 2 Juli 2009 3 komentar

Researchers at ARS’s Eastern Regional Research Center (ERRC) in Wyndmoor, Pennsylvania, have filed a patent on technology that can further protect pasteurized liquid eggs from food safety threats. These threats include both naturally occurring spoilage bacteria and pathogens such as Salmonella enteritidis, the primary cause of egg-related foodborne illness in the United States. The technology has also been successfully applied to milk.

But don’t go running for that dough just yet. The U.S. Food and Drug Administration (FDA) still cautions against consuming any raw, unpasteurized eggs or products that contain them.

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Kategori:Informasi