搜索结果: 1-15 共查到“畜牧学 eggs”相关记录37条 . 查询时间(0.093 秒)
Effect of the Source and Level of Carotenoids in Diets on Their Retention in Eggs
hen lutein zeaxanthin yolk Chlorella Mexican marigold
2018/3/5
The lutein and zeaxanthin deposition in egg yolks of hens was evaluated. The effects of various levels of extracts
from Mexican marigold flowers in hen diets were compared in Experiments 1 (from 0 to...
Influence of dietary vitamin C and selenium, alone and in combination, on the performance of laying hens and quality of eggs
ascorbic acid sodium selenite selenized yeast layers vitamins egg production
2015/6/24
Two hundred and forty laying hens were fed diets supplemented with vitamin C and selenium (Se). Vitamin C was added at 0 or 200 mg/kg, and Se was added as sodium selenite or selenized yeast at 0.3 mg/...
The influence of housing systems on the air quality and bacterial eggshell contamination of table eggs
conventional cage system aviary air hygiene eggshell microorganisms
2015/6/8
This paper compares two different housing systems for laying hens producing table eggs, namely a conventional cage system and an aviary, during three summer months, starting from the 20th week of the ...
Selenium and α-tocopherol content in eggs produced by hens that were fed diets supplemented with selenomethionine, sodium selenite and vitamin E
eggs selenium selenomethionine selenite vitamin E retinol cholesterol oxidative stability
2015/6/8
The effect of supplementing dietary selenium (Se) and vitamin E was investigated in 330 24-week-old laying hens. The hens were fed a basal diet containing Se and α-tocopherol at 0.11 and 26 mg/kg, res...
The effect of digitonin on egg quality, cholesterol content in eggs, biochemical and haematological parameters in laying hens
digitonin egg weight lipid metabolism egg cholesterol blood picture
2015/6/5
The aim of the present study was to describe the effect of digitonin on egg quality, cholesterol content in eggs, some parameters of serum lipid metabolism and blood picture of laying hens. The experi...
Defective eggs and their relationship to egg yield, egg and body weight in hens of five original laying lines
hens cracked eggs double-yolk eggs
2015/6/5
We investigated 3 985 individually housed hens of five original laying lines of two breeds RIR and BPR. The proportion of abnormal eggs out of the eggs laid before the age of 240 days ranged between 7...
The influence of cadmium on Prussian carp oocyte maturation, development of eggs and hatching
heavy metals oocyte maturation steroid hormones embryonic development hatching enzyme
2015/6/5
The influence of cadmium (Cd) on the last stage of Prussian carp (Carassius auratus gibelio B.) oocyte maturation and embryonic development was investigated. The (postvitellogenic) oocytes were incuba...
Mechanical behaviour under compression loading and some physical parameters of Japanese quail (Coturnix coturnix japonica) eggs
quail egg physical properties mechanical behaviour
2015/6/4
Technical information and data on the physical and mechanical properties of agricultural and animal products are necessary to design various equipments for agriculture and industry. In this study some...
The effects of prestorage incubation and length of storage of broiler breeder eggs on hatchability and subsequent growth performance of progeny
broiler prestorage performance
2015/6/2
A total of 1 200 broiler breeder eggs were collected from a commercial flock at the hen age of 37 weeks and divided into storage treatments of 5 and 15 days. Prior to storage, the eggs were further di...
The effect of magnetic field on hatchability of Japanese quail eggs
Japanese quail egg hatchability magnetic field
2015/6/2
The effect of environmental conditions on hatching indices of poultry eggs is sufficiently important that new methods for their improvement are sought, among others through exposing the eggs during ha...
The quality comparison of eggs laid by laying hens kept in battery cages and in a deep litter system
laying hen rearing technology egg weight egg albumen weight yolk weight yolk cholesterol yolk colour shell strength
2015/6/2
At present the laying hen rearing is transformed into alternative housing systems which include a deep litter system. As for the poultry nutrition, the replacement of animal protein with vegetable pro...
Effect of dietary sodium selenite,Se-enriched yeast and Se-enriched Chlorella on egg Se concentration, physical parameters of eggs and laying hen production
sodium selenite Se-yeast Se-Chlorella laying hens Se in eggs Haugh unit hen production
2015/6/2
ISA Brown laying hens at 24 weeks of age, housed in laying battery cages, were used in this 4-group experiment. One group was fed a basal diet containing primarily maize, soybean meal and wheat. Selen...
Sex reversed chicks (Gallus domesticus) hatched from eggs treated with aromatase inhibitor YM511
aromatase inhibitor sex reversal chicken
2015/6/1
The objectives of this study were to assess post-hatch development of chickens treated in ovo with the aromatase inhibitor YM511. A total of 137 eggs coming from artificially inseminated hens were at ...
Dietary Protein Sources Affect Internal Quality of Raw and Cooked Shell Eggs under Refrigerated Conditions
Plant Protein Ingredient Internal Quality Refrigeration Chicken Egg
2016/5/19
This study was conducted to evaluate the effects of various protein sources (soybean meal, SBM; cottonseed protein, CSP; double-zero rapeseed meal, DRM) on the internal quality of refrigerated eggs. A...
Fatty Acid Composition and Sensory Characteristics of Eggs Obtained from Hens Fed Flaxseed Oil, Dried Whitebait and/or Fructo-oligosaccharide
Fructo-oligosaccharide Egg Enriched with ω-3 Fatty Acid Brown Laying Hens
2016/5/17
This study was conducted to assess the effects of flaxseed oil and dried whitebait as a source of ω-3 fatty acids (ω-3 FA), which could be used to produce eggs enriched with ω-3 FA, and of fructo-olig...