搜索结果: 1-15 共查到“畜牧学 Age”相关记录51条 . 查询时间(0.149 秒)
Effects of age on intestinal phosphate transport and biochemical values of broiler chickens
Broiler Chickens Growth Intestinal Transport Phosphorus Biochemical Values
2017/3/9
The objective of this experiment was to characterize the mRNA expression profile of type IIb sodium-inorganic phosphate cotransporter (NaPi-IIb) and the biochemical values of serum alkaline phosphatas...
The effect of one-week intensive feed restriction and age on the carcass composition and meat quality of growing rabbits
dressing out percentage limited feed intake meat tenderness muscle fibre characteristics rabbit
2016/5/11
The effect of one-week intensive feed restriction on the carcass characteristics, meat tenderness, cooking loss, and muscle fibre characteristics of growing rabbits was evaluated. Weaned rabbits (35 d...
Number of Calves Produced at Specified Age as a Measure of Reproductive Performance in Beef Cattle under Artificially-Inseminated Breeding Scheme
Beef Cattle Genetic Parameter Number of Calves Produced Reproductive Performance
2016/4/29
Reproductive abilities in beef cattle herds are receiving increased attention due to recent rises in production costs. To achieve more efficient management, a measure of fertility, namely the number o...
Age and sex-related changes in superoxide dismutase activity in bovine tissues
antioxidative enzymes cows calves bulls age sex
2015/9/15
The influence of age, gender, and type of tissue on superoxide dismutase (SOD) activity in bovine organs and tissues was investigated. The investigated material consisted of fragments of tissues and o...
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 ...
Uterine size in replacement gilts associated with age, body weight, growth rate, and reproductive status
pig reproduction puberty uterus
2015/7/2
The objective of the present study was to determine the association between the uterine size and age, body weight, growth rate, and reproductive status in Landrace × Yorkshire crossbred gilts. Genital...
Effect of age at first calving on longevity and fertility traits for Holstein cattle
functional traits survival analysis linear model cattle
2015/6/24
Effects of age at first calving (AFC) on functional longevity of Czech Holstein cows and their reproduction traits in the first lactation were analyzed using the first lactation data of 605 538 Holste...
Computed tomographic analysis of tibiotarsal bone mineral density and content in turkeys as influenced by age and sex
volumetric bone mineral density bone mineral content
2015/6/23
Changes in the volumetric bone mineral density (vBMD) and bone mineral content (BMC) of
tibiotarsal bones of growing turkeys as affected by birds’ age, sex, and within-the-bone location, respectivel...
The influence of litter age, litter temperature and ventilation rate on ammonia emissions from a broiler rearing facility
ammonia litter broiler chickens grow-out period ventilation rate
2015/6/8
The research reported in this article attempts to address the ammonia problem by quantifying the effect of several variables on ammonia concentrations and emissions. These variables include litter tem...
Effect of the age and season of fattening period on carbon dioxide emissions from broiler housing
carbon dioxide broiler chickens heating natural gas ventilation rate
2015/6/8
The quantification of emissions of greenhouse gases from human activities is of prime importance for determining the importance of their effect on the environment. The aim of this study was to test a ...
The effects of housing systems and age of hens on the weight and cholesterol concentration of the egg
conventional cages enriched cages litter system outdoor system yolk cholesterol egg weight
2015/6/4
The effects of laying hen age and the housing of laying hens in conventional cages, enriched cages, litter system and outdoor system on egg weight and yolk and egg cholesterol concentration were studi...
The effect of weaning age on performance and nutrient digestibility of broiler rabbits
rabbit early weaning growth carcass characteristics nutrient digestibility parasite incidence mortality
2015/6/4
The effect of weaning age on growth, feed consumption, digestibility of nutrients, carcass yield, mortality and parasite incidence was studied in a balance experiment. Forty Hyplus® rabbits proce...
The effect of age upon iron retention in cockerels of laying and meat type hybrids was examined within 46 subsequent balance periods. Chickens were fed ad libitum a diet with the content of 312 mg Fe ...
Effect of Age on Energy Requirement for Maintenance and Growth of Dorper and Hu Crossbred F1 Ewes Weighing 20 to 50 kg
Metabolizable Energy Requirement Fattening Period Age Ewe
2016/5/18
This research aimed to define the energy requirement of Dorper and Hu Hybrid F1 ewes 20 to 50 kg of body weight, furthermore to study energy requirement changes with age and evaluate the effect of age...
Effects of Heat-oxidized Soy Protein Isolate on Growth Performance and Digestive Function of Broiler Chickens at Early Age
Broilers Digestion Growth Performance Heat-oxidized Soy Protein Isolate
2016/5/18
This study was conducted to investigate effects of heat-oxidized soy protein isolate (HSPI) on growth performance, serum biochemical indices, apparent nutrient digestibility and digestive function of ...