搜索结果: 136-150 共查到“农学 Quality”相关记录942条 . 查询时间(0.092 秒)
The effect of oviposition time and genotype on egg quality characteristics in egg type hens
laying hens genotype oviposition time egg quality
2015/6/4
In an experiment with three strains of Dominant genotype the effect of oviposition on egg quality characteristics was investigated. Laying hens of the Blue strain (group 1), Plymouth Rock (group 2) an...
Selenium content in tissues and meat quality in rabbits fed selenium yeast
rabbits selenium meat
2015/6/4
Ten weaned rabbits were fed a basal (control) diet containing 0.12 mg Se/kg. In 10 rabbits the basal diet was supplemented with Se-enriched yeast to increase the Se concentration to 0.50 mg/kg. Rabbit...
Performance and carcass quality of Czech Fleckvieh, Charolais and Charolais × Czech Fleckvieh bulls fed diets based on different types of silages
cattle crossbreeding feeding intensity growth carcass quality
2015/6/4
A total of thirty-four Czech Fleckvieh (CF), Charolais (CH) and Charolais × Czech Fleckvieh (CH × CF) bulls with an average weight of 284 kg were included in the experiment and fed ad libitum two mixe...
Pig carcass quality in relation to carcass lean meat proportion
pig carcass lean meat proportion evaluation
2015/6/2
The objective of the study was to quantify differences in the carcass composition of pig carcasses with different lean meat proportions. Totally 132 carcasses with lean meat proportions ranging from 4...
Influence of various lysine and threonine levels in feed mixtures for lactating sows on milk quality and piglet growth
amino acids lysine threonine crude protein lactating sow milk piglet growth
2015/6/2
The quality of produced milk and piglet growth were investigated in three groups of lactating Large White sows fed three mixtures containing different levels of lysine, threonine and crude protein. Pi...
Adult steers for beef production: breed effect on animal performance, retail yield and carcass quality
adult steers carcass quality breed effect retail yield
2015/6/2
The production of adult steers for beef could be a profitable use of the territory in some mountain areas in the south of Europe, where this production is nearly inexistent, owing to an increase in th...
The effect of selenium source on the performance and meat quality of broiler chickens
broiler cockerels Se-enriched yeast alga Chlorella performance selenium content
2015/6/2
The effect of dietary supplementation of selenium in an organic form on performance, carcass traits and selenium content in tissues of broiler cockerels Ross 308 was studied. The soya-wheat-maize diet...
The effect of dietary Jerusalem artichoke (Helianthus tuberosus L.) on performance, egg quality characteristics and egg cholesterol content in laying hens
Jerusalem artichoke laying hen egg production egg quality characteristics
2015/6/2
This research was carried out to determine the effect of Jerusalem artichoke (JA) with or without 5, 10% vetch (V) supplementation on performance, egg quality characteristics and egg cholesterol conte...
The effects of season and rearing systems on meat quality traits
broilers season rearing system meat quality
2015/6/2
With the aim to examine the effect of season and rearing system on major broiler meat quality traits appropriate experimental investigations were conducted. Trial material included a total of 800 one-...
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 different agronomical measures on yield and quality of autumn saved herbage during winter grazing – 2nd communication: Crude protein, energy and ergosterol concentration
winter pasture grazing livestock metabolisable energy ergosterol mycotoxins
2015/6/2
In addition to the results published in the first communication (Opitz von Boberfeld et al., 2006) this paper presents crude protein, energy (ME) and ergosterol concentrations of autumn saved herbage ...
Effect of different agronomical measures on yield and quality of autumn saved herbage during winter grazing – 1st communication: Yield and digestibility of organic matter
low-input grassland winter grazing suckler cow forage quality Central Europe
2015/6/2
The objective of this paper was to obtain information about the effect of interactions and different agronomical measures on autumn saved herbage of different sites in Central Europe (Czech Republic, ...
Carcass quality in restricted and ad libitum fed rabbits
abbit restriction carcass characteristics colour pH
2015/6/2
The effect of the length and intensity of feed restriction on carcass quality characteristics was studied in two experiments. In the first experiment rabbits were restricted 1 or 3 weeks. Group 1 was ...
Quality of semen and histological analysis of testes in Eurasian perch Perca fluviatilis L. during a spawning period
perch gonads semen spawning time
2015/6/2
A qualitative assessment of the Eurasian perch Perca fluviatilis semen describing the basic parameters of seminal plasma was completed. The histological methods used in this study showed changes in pe...
Carcass and meat quality in Brown fattened young bulls: effect of rearing method and slaughter weight
Brown cattle carcass composition meat colour sensory evaluation
2015/6/2
Three groups of Brown fattened young bulls were studied, comparing the effects of rearing method (suckled vs. bucket reared) and of slaughter weight (400 vs. 480 kg). Suckled animals had higher fatnes...