✔Pullets were housed in cages
through 17 weeks of age and were evaluated during a 40- week production cycle. Hot blade trimming allowed three
levels of reduction in beak length (14%,
31% and 39% shorter than controls)
when evaluated at 38 weeks of age.
The infrared treatment resulted in
beaks that were 30% to 36% shorter
than the control. Body weight was reduced for hens subjected to hot blade
trimming at the most severe level at
both 20 and 38 weeks but the effect was
absent at 60 weeks of age. The important observation was that hen-day egg
production was not affected by any of
the methods of beak trim. In contrast
mortality was increased due to cannibalism in the control hens. Feed intake
was decreased proportionally to the severity of beak trim but without affecting egg quality parameters.
Composition in Eggs from Hens Housed
in Cage vs. Range Production Facilities
Dr. Ken Anderson evaluated the validity of the public perception concerning
the presumed superior nutrient qualities
of range eggs in product derived from
the NC Random Sample Test. Egg pools
were sent to four laboratories to determine cholesterol, omega- 3 fatty acids,
saturated fat, beta carotene, Vitamin A
min A nor vitamin E level was affected
by housing system but both treatments
showed a decline at 62 weeks of age.
Beak treatment
Article 172 – Effects of Degree of
Beak Trimming on the Performance of
White Leghorn Hens
The effects of beak treatment on performance of Lohmann LSL and Shaver
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and Vitamin E. Total fat content in samples varied from a high of 8.9% to low of
6.8%. Eggs from range production had
higher total fat, monounsaturated fat and
polyunsaturated fat than eggs produced
by caged hens. The omega- 3 levels were
stated to be 0.17% in range eggs compared to 0.14% in caged eggs. There was
no impact on cholesterol with values of
327 and 331 mg/100 g for caged and
ranged hens respectively. Neither vita-
hens were evaluated by scientist of the
University of Saskatchewan.
Treatments included the following:
✔Day old infrared beak trim at two
intensities,
✔Day old hot-blade beak trim using
appropriate templates for either Bovans
or CV- 20 strains. Degree of trim ranged
from mild through moderate to severe.
✔A non-treated group served as the
control
Article 171 – Effects of Degree of Beak
Trimming on the Behavior and Feather
Condition of White Leghorn Hens
In a related presentation the Sas-
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