搜索结果: 1-11 共查到“畜牧学 environmental”相关记录11条 . 查询时间(1.797 秒)
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 ...
The algorithm of Bayesian estimation of maternal genetic and permanent maternal environmental variances in a two-trait binary threshold model
binary traits genetic effects Gibbs sampling
2015/6/5
The paper presents an algorithm for the estimation and prediction of parameters in a two-trait binary threshold model. The model includes fixed effects and the following random effects: genetic direct...
Integrated Tree Crops-ruminants Systems in South East Asia: Advances in Productivity Enhancement and Environmental Sustainability
Economic Impacts Sustainability Environment Constraints Opportunities
2016/5/6
Improved efficiency in the use of natural resources, pragmatic production systems and environmental sustainability, justified by the need for improved land use systems and increased productivity, are ...
The Effects of Dietary Turkish Propolis and Vitamin C on Performance, Digestibility, Egg Production and Egg Quality in Laying Hens under Different Environmental Temperatures
Vitamin C Propolis Heat Stres Laying Hen
2016/4/28
In this study, the effects of propolis and vitamin C (L-ascorbic acid) supplementation in diets were investigated on feed intake (FI), body weight (BW), body weight gain (BWG), feed conversion rate (F...
RELATIONSHIPS BETWEEN CYTOLOGICAL QUALITY AND COMPOSITION OF MILK AND THE EFFECT OF SOME ENVIRONMENTAL FACTORS ON THE FREQUENCY OF RECURRENT MASTITIS IN COWS
milk mastitis somatic cells
2010/12/6
Data on somatic cell counts (SCC) in test-day milkings of 63621 cows from the active population of the Pomerania and Kujawy regions were analysed for the years 1998–2002. A negative correlation was fo...
Environmental Sustainability and Social Desirability Issues in Pig Feeding
Pig Feeding Environmental Sustainability Social Desirability
2016/4/25
Feeding pigs used to be a means of managing domestic resources that may otherwise have been wasted into valuable animal protein. Feeding pigs thus was a form of husbandry. Following recent rapid indus...
ABUNDANCE OF WILD RODENTS, TICKS AND ENVIRONMENTAL RISK OF LYME BORRELIOSIS: A LONGITUDINAL STUDY IN AN AREA OF MAZURY LAKES DISTRICT OF POLAND
rodent populations Ixodes ricinus Borrelia burgdorferi s.l.
2010/12/23
The results of a longitudinal epidemiological survey in two contrasting habitats in an area of the Mazury Lakes district of Poland indicate that both host and vector (Ixodes ricinus) densities, may be...
Environmental Impacts on Concentrate Feed Supply Systems for Japanese Domestic Livestock Industry as Evaluated by a Life-cycle Assessment Method
Livestock Barley Concentrate Feed Life-cycle Assessment Greenhouse Gases Emissions Trading
2016/4/19
The objectives of this study were to evaluate and compare the environmental load of two different concentrate feed supply systems to the Japanese domestic livestock industry using the Life-cycle Asses...
EFFECT OF SOME ENVIRONMENTAL FACTORS ON WEANING PERFORMANCE OF HUNGARIAN GREY CATTLE POPULATIONS
Hungarian Grey cattle environmental effects genetic parameters heritability
2010/11/30
Weaning performance of 2857 purebred calves (660 male and 2197 female) born from 1498 cows mated with 78 sire were analised in seven farms. Genetic- and environmental variance and heritability, breedi...
The Effect of High Environmental Temperature and Nutrient Density on Pig Performance, Conformation and Carcass Characteristics under Restricted Feeding System
Fattening Pigs Temperature Energy Protein Performance Carcass Composition
2016/4/15
An experiment was conducted to examine the effect of a high environmental temperature on the performance, conformation, and carcass characteristics of pigs and the influence of diet. Thirty-six three-...
Genetic and Environmental Deterrents to Breeding for Disease Resistance in Dairy Cattle
Breeding Strategies Disease Resistance Dairy Cattle
2016/4/13
Selection for increased milk production in dairy cows has often resulted in a higher incidence of disease and thus incurred a greater health costs. Considerable interests have been shown in breeding d...
