Review: feed withdrawal and non feed withdrawal moult

  title={Review: feed withdrawal and non feed withdrawal moult},
  author={D. S. Patwardhan and Annie J. King},
  journal={World's Poultry Science Journal},
  pages={253 - 268}
Moulting is a natural phenomenon in birds. Temperature variation and photoperiodic changes induce circadian and circannual rhythms, manifested by changes in the neural and endocrine systems, ultimately causing physiological processes resulting in a moult. The concept of induced moulting by feed deprivation arose during the early part of the 20th century as a solution to economic challenges of decreased egg production in commercial layer flocks toward the end of the first laying cycle as they… 
Analysis of excreta bacterial community after forced molting in aged laying hens
This study improves the current knowledge of bacterial community alterations in the excreta by forced molting in aged laying hens, which can provide increasing opportunity to develop novel dietary and management skills for improving the gastrointestinal health of aged layinghens after molting.
Reproductive management of poultry
Among the most successful reproductive management techniques are optimizing photoperiod, light intensity and nutrition, which has allowed maximizing production of today's poultry.
Early experiences matter: a review of the effects of prenatal environment on offspring characteristics in poultry
Measurements of offspring characteristics may prove to be a useful method of assessing parent stock welfare if known stressors result in predictable offspring outcomes and could lead to improved welfare for the animals.


Alfalfa as a single dietary source for molt induction in laying hens.
Results show that alfalfa meal and al falfa pelleted diets were equally effective as feed withdrawal in causing ovary weight regression in birds.
The influence of different single dietary sources on moult induction in laying hens.
Dried tomato pomace and alfalfa meal may be fed to hens on an ad libitum basis for effective moult induction while reducing the stress of severe starvation and retaining comparable egg quality and production.
Induced moulting procedures in laying fowl
Several successful methods of inducing moulting have been used to recycle laying hens, the majority of which require an optimum weight loss of 25–30% to achieve maximum egg production during the
A Jojoba-Rich Diet as a New Forced Molting Method in Poultry
Jojoba meal has no irreversible inhibitory effect on the regrowth of the oviduct of adult broiler breeders after molting, whereas in growing pullets, jojoba Meal is known to produce an irreversible inhibition of the Oviduct development, resulting in no egg laying.
The physiology of induced molting.
  • W. Berry
  • Biology, Medicine
    Poultry science
  • 2003
The process of molting, and the subsequent recovery from the molt, may be viewed as a complex physiological constellation, induced by environmental and nutritional cues, involving endocrine systems, reproductive tissue structure and function, lymphoid structure, and immune function.
Passage of feed through the adult rooster.
Five experiments were made to measure the time required for feed residues to clear the alimentary canal and the rate of excreta production was affected by the duration of starvation prior to the feeding of coarsely ground corn, soybean meal, and meat meal.
Guar meal diets as an alternative approach to inducing molt and improving Salmonella enteritidis resistance in late-phase laying hens.
Results indicate that feeding diets containing 20% GM are as effective as complete feed withdrawal with respect to inducing molt with the added benefit of improved resistance to Salmonella Enteritidis colonization and translocation.
Utilizing different ratios of alfalfa and layer ration for molt induction and performance in commercial laying hens.
Al falfa or alfalfa mixed with layer ration appears to be viable alternatives to conventional FW methods for the successful induction of molt and retention of postmolt performance.
Behavior of white leghorn laying hens after withdrawal of feed.
To approximate a commercially induced molt, feed was withdrawn (FW) from Hy-Line W-36 hens (65-wk-old) until they lost 35% of their initial body weight. Behaviors of 36 FW hens and 36 control hens
Induction of a pause in laying by corticosterone infusion or dietary alterations: effects on the reproductive system, food consumption and body weight.
A pause in laying was induced in hens by infusing 30 micrograms corticosterone/h, feeding diets deficient in calcium or sodium and by food and water withdrawal, and all treatments resulted in an increase in the number of atretic follicles.