Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEgg laying pattern, floor laying, egg weight, hatchability, fertility and body weight at hatch relative to flock age of broiler breeders
تأثير عمر القطيع في زمن وضع البيض و معدل وضع البيض الأرضي و وزن البيض و معدل الخصوبة و الفقس و وزن الصيصان الفاقدة لدجاج إنتاج اللحم
1111
0 42
0
(
0
)
Authors
سوزان فهمي رسلان( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
أجريت تجربتان على قطيع دجاج أمات إنتاج اللحم التجاري كوب 500 لتحري تأثير عمر القطيع في نموذج وضع البيض و معدل وضع البيض الأرضي و وزن البيض و معدل الخصوبة و الفقس و وزن الصيصان الفاقسة, تم جمع البيض من القطيع في التجربة الأولى بعمر 32 و 43 أسبوعا لستة أيام متتالية بشكل ساعي من أجل دراسة نموذج وضع البيض و معدل البيض الأرضي, و أجريت التجربة الثانية على 2916 بيضة من القطيع بعمر 32 و 43 و 49 أسبوعا بهدف دراسة تأثير عمر القطيع في وزن البيض و وزن الصيصان الفاقسة و معدل الخصوبة و الفقس.
Two experiments were carried out to determine the effect of flock age on egg laying pattern, floor laying, egg weight, hatchability, fertility and body weight at hatch. Eggs were collected from 32and 43 wk old Cobb 500 broiler flocks for 6 consecutive days hourly to study egg laying pattern and floor laying (experiment 1). In experiment 2, 2916 eggs from the flock at 32 ,43 and 49 wk old were used to determine the effect of flock age on egg weight, hatchability, fertility and body weight at hatch.
References used
Abrahamsson, P., and R. Tauson. 1998. Performance and egg quality of laying hens in an aviary system. J. Appl. Poult. Res. 7: 225-232
Abudabos, A. 2010. The effect of broiler breeder strain and parent flock age on hatchability and fertile hatchability. Inter. J. of. Poult. Sci. 9 (3): 231-235
Ahn, D. U., S. M. Kim, and H. Shu. 2000. Effect of egg size and strain and age of hens on the solids content of chicken eggs. Poult. Sci. 76:914–919
rate research
Read More
Three experiments were conducted using Cobb 500 broiler breeders to determine oviposition pattern and the effect of oviposition time of eggs representing different positions in the normal egg laying sequence on egg weight , fertility , hatchability , embryonic mortality and chicken weight at hatch.
The research was carried out on two classes of hatching eggs obtained
from broiler breeder flock ( shifer starbro- Hybird ) 39 and 59 wk of age .
In each class the hatching eggs were graded into three groups according
to their weights.
The hatchi
ng eggs of each group were divided into three replicates .
Eggs of all replicates were incubated in the same incubator . At hatching
(115) chicks were taken from each replicate and fed in separate pen until 7
weeks of age . All conditions of housing, rearing and feeding
( vegetable diets ) were same for all birds of all replications.
Two experiments were conducted to evaluate the effect of ascorbic acid
(AA) during egg incubation on development of broiler chickens of a
commercial stock. In Experiment ١, eggs with living embryos were injected at
١٥ d of incubation with ٠٫١ ml o
f saline solution containing either ٣ or ١٢ mg of
AA per egg and uninjected control. Body weights of each treatment were
determined weekly from hatch to ٦ wk of age. In Experiment ٢, the treatments
at ١٥ d of incubation were as follows: ١) eggs injected with ٣ mg of AA and
then cooled at ٢٢° C for ٢٤ h; ٢) eggs dipped in ٣٪ solution of AA for ٣ min
and then cooled at ٢٢° C for ٢٤ h; and ٣) control. Embryo weight at ١٩ d of
incubation, hatchability and body weights of the hatched chicks were
determined.
The experiment was conducted on 24 brown laying hens at 30
weeks old and were randomly assigned to four groups, each
consisting of six laying hens and put in individual cages stacked in
accordance with the battery system in the unit of poultry fee
d at the
Faculty of Veterinary Medicine, University of Hama, in order to
study the effect of different types of oil and fat on performance,
apparent and true metabolizable energy, and apparent and true fats
digestibility.
This research was carried out using a total of 60 one-day old chicks from
hybrid broiler (Hubbard). Opened house system was used for rearing on floor
pens. The chicks divided randomly into three equal groups. The first group
considered as a contro
l which was fed on a ration without supplementation of
Garlic Powder (0.0%). while the second and third were fed on a ration
supplemented with Garlic Powder by (0.5%) & (1%) respectively. All
treatments were applied beginning from one-day chicks old up to sixth week of
age. The results showed that the supplementation of Garlic Powder (0.5%) and
(1%) led to improve broiler performance: significantly increase (P<0.05) was
noticed in final live body weight 5.12 % and 3.54%; weight gain 5.26 % and
3.62% respectively comparing with control, improve feed efficiency 7.57% and
8.86%, decrease feed consumption 2.69% and 5.54%.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
