Emergency Substitutions for Laying Mash in the Diet of White Leghorn Pullets
نویسندگان
چکیده
منابع مشابه
Early access to perches in caged White Leghorn pullets.
Osteoporosis, a progressive decrease in mineralized structural bone, causes 20 to 35% of all mortalities in caged White Leghorn hens. Previous research has focused on manipulating the egg laying environment to improve skeletal health, with little research on the pullet. The objective of the current study was to determine the effect of perch access on pullet health, bone mineralization, muscle d...
متن کاملEffects of perch access and age on physiological measures of stress in caged White Leghorn pullets.
The neuroendocrine system controls animals' adaptability to their environments by releasing psychotropic compounds such as catecholamines [epinephrine (EP), norepinephrine (NE), and dopamine (DA)], corticosterone (CORT), and serotonin (5-hydroxytryptamine or 5-HT). Changes of these neuroendocrine compounds have been used as biomarkers of animals' stress responses associated with their well-bein...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
اثر انرژی دوره پرورش و سطوح انرژی و چربی جیره تخم‌گذاری بر عملکرد مرغان‌های لاین
An experiment with 720 pullets was conducted to investigate the effect of dietary energy levels of pullet and dietary energy and fat of laying ration on subsequent performance parameters during 14-20 and 22-44 weeks of age. In the first period, white leghorn pullets were fed with two diets of low and high density energy (2600 and 3200 Kcal ME/kg). In the lating period (second period), birds, in...
متن کاملاثر انرژی دوره پرورش و سطوح انرژی و چربی جیره تخم‌گذاری بر عملکرد مرغان‌های لاین
An experiment with 720 pullets was conducted to investigate the effect of dietary energy levels of pullet and dietary energy and fat of laying ration on subsequent performance parameters during 14-20 and 22-44 weeks of age. In the first period, white leghorn pullets were fed with two diets of low and high density energy (2600 and 3200 Kcal ME/kg). In the lating period (second period), birds, in...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1944
ISSN: 0032-5791
DOI: 10.3382/ps.0230126