搜索结果: 121-135 共查到“农学 quality”相关记录945条 . 查询时间(0.156 秒)
Effect of inorganic or organic selenium supplementation on productive performance, egg quality and some physiological traits of dual-purpose breeding hens
selenium egg production fertility hatchability egg quality
2015/6/8
One hundred and twenty (100♀ + 20♂) 30-weeks-old dual-purpose breeding hens of Gimmizah strain were housed in individual cages in a semi-open house. Birds were distributed randomly into five treatment...
Meat quality and fatty acid profile of the musculus longissimus lumborum in Czech Fleckvieh, Charolais and Charolais × Czech Fleckvieh bulls fed different types of silages
beef meat quality fatty acids breed diet composition
2015/6/8
The effects of breed and diet containing different types of silages on meat quality parameters and fatty acid profile of m. longissimus lumborum (MLL) were evaluated in a total of 30 Czech Fleckvieh (...
Meat quality defined based on pH and colour depending on cattle category and slaughter season. colour and pH as determinants of meat quality dependent on cattle category and slaughter season
cattle longissimus thoracis muscle slaughter season meat pH and colour
2015/6/8
The studies were carried out on 614 animals slaughtered in winter and summer seasons. After slaughter and post-slaughter processing the carcasses were evaluated according to EUROP system. The meat pH ...
The data on 964 pig carcasses were examined with the objective to determine the relationship between a high carcass lean meat content in currently used pig hybrids and deterioration of the quality tra...
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...
The effect of a housing system in slaughter turkeys on mechanical damage to carcass and meat quality
turkeys losses type of floor mechanical damage meat quality
2015/6/5
The aim of the experiment was to find out whether the housing of Polish white broad-breasted heavy type turkeys J-22 on slatted floor (group I) and litter floor (group II) has an effect on the final b...
Effect of housing system on the calcium requirement of laying hens and on eggshell quality
enriched cage unenriched cage floor system eggshell production Ca requirement
2015/6/5
The effects of housing systems on the calcium requirement for eggshell production, eggshell quality and on the breaking strength of the hen’s tibia were evaluated. Unenriched cages (UN) (24 laying hen...
Changes in egg quality traits associated with long-term selection for lower yolk cholesterol content in Japanese quail
selection yolk cholesterol egg quality traits correlations Japanese quail
2015/6/5
In the present paper we describe the basic results of long-term selection for low yolk cholesterol content in Japanese quail and its influence on development and relationship with other egg quality tr...
Effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling in East Friesian ewes
stage of lactation ewe milk composition milk properties quality of rennet curdling East Friesian
2015/6/5
The evaluation of the effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling was carried out over the period of three successive years using milk sampl...
Nutritive value of broad-leaved dock (Rumex obtusifolius L.) and its effect on the quality of grass silages
broad-leaved dock nutritive value of herbage ensiling fermentation
2015/6/5
The effect of broad-leaved dock (Rumex obtusifolius L.) on the impaired nutritive value of grassland herbages was studied together with the effect of dock and addition of microbial inoculant on the fe...
The effect of feeding untreated rapeseed and iodine supplement on egg quality
laying hens sinapine eggshell taste
2015/6/5
The objective of the experiment was to evaluate the effect of the feeding of 80 g/kg (R8) and 100 g/kg (R10) of untreated rapeseed (RS) on egg quality including sensory quality in comparison with a co...
Analysis of raw cow milk quality according to free fatty acid contents in the Czech Republic
cow raw milk bulk milk sample mammary gland fat free fatty acids crude protein casein lactose somatic cell count total mesophilic bacteria count psychrotrophic bacteria count urea mechanical stress lipolysis
2015/6/5
The concentration (c) of free fatty acids (FFAs) in milk is an indicator of dairy cow nutrition, milk straining, its bacterial contamination and storage quality. High FFA concentrations (cs) caused by...
Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens
body weight laying hen laying performance egg quality traits
2015/6/5
This study was carried out to investigate the effect of different body weight groups (light (L) = 1 400–1 500; medium (M) = 1 500–1 600 and heavy (H) = 1 600 < g) on performance and egg quality traits...
The effect of lycopene supplementation on lipid profile and meat quality of broiler chickens
broiler cockerels selenium lycopene quality of meat
2015/6/5
An experiment was conducted to determine the effect of lycopene on lipid profile and quality of meat of broiler chickens Ross 308 at a different form of selenium. 540 broiler cockerels were randomly d...
The evaluation of growth and selected carcass and meat quality parameters in fattening bulls fed a diet based on concentrates or maize silage
Czech-Pied bulls high-grain diet weight gain carcass weight m. longissimus
2015/6/5
The aim of the study was to evaluate the growth rate and selected carcass and meat quality parameters in bulls fed a high-grain diet and to compare the results with those obtained in bulls fed a diet ...