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Effect of hen age, environmental temperature, and oviposition time on egg shell quality and egg shell and serum mineral contents in laying and broiler breeder hens
egg mineral composition serum minerals
2015/7/2
The aim of the study was to evaluate egg shell quality characteristics, mineral content in the egg shell, and serum mineral concentration during the egg formation process as influenced by oviposition ...
Laying pattern parameters in broiler breeder hens and intrasequence changes in egg composition
broiler breeder hens egg sequence laying pattern egg composition
2015/6/8
The aim of the study was to analyze the pattern of oviposition time in laying sequences in broiler breeder hens and to determine a relationship between egg position in the sequence and egg quality. Th...
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...
Seroprevalence of avian metapneumovirus infection in broiler and broiler breeder chickens in Iran
avian metapneumovirus seroprevalence avian pneumovirus
2015/4/15
Avian metapneumovirus causes an acute highly contagious upper respiratory tract infection primarily of turkeys and chickens. The disease can cause significant economic losses in turkey and chicken flo...
Reevaluation of lysine requirement based on performance responses in broiler breeder hens
Broiler breeder hens lysine performance requirement
2011/1/12
This experiment was conducted to study lysine requirement in broiler breeder hens. The treatments consist of 6 levels of lysine (0.50, 0.57, 0.64, 0.71, 0.78 and 0.85%) in a completely randomized desi...
The Needle Bore Diameter for In Ovo Amino Acid Injection Has no Effect on Hatching Performance in Broiler Breeder Eggs
amino acids broiler breeder in ovo hatchability needle bore diameter
2009/7/31
The objective of this study was to determine if the bore diameter of needles used for in ovo injection of amino acids (AA) would affect subsequent chick hatchability. In Experiment 1, needles of diffe...
Comparative Effects of Xylanase Supplementation on Broiler,Broiler Breeder and Layer Chick Performance and Feed Utilization on Wheat Based Diet
broiler broiler breeder enzyme layer performance
2009/7/30
The interaction between chick type and xylanase supplementation (Avizyme 1300) of a wheat based diet was investigated using a 3×2 factorial arrangement. The diet (645g wheat/kg) was supplemented with ...
Requirement of Non-phytate Phosphorus in Synthetic Broiler Breeder Diet
Non Phytate Phosphorus Requirement Synthetic Broiler Breeder
2016/4/26
An experiment was conducted to study the laying performance, shell quality, bone mineralization, hatchability of eggs and performance of progeny (weight at day one and 14 d of age, P content in day ol...
Effects of Dietary Vitamins C and E on Egg Shell Quality of Broiler Breeder Hens Exposed to Heat Stress
Vitamin C Vitamin E Egg Shell Quality Heat Stress H/L Ratios Broiler Breeder Hen
2016/4/19
A feeding trial was conducted to determine whether dietary vitamin C (200 mg/kg) and vitamin E (250 mg/kg) prevent any drops in egg shell quality under heat stress in broiler breeder hens. One hundred...