搜索结果: 1-15 共查到“畜牧学 Productivity”相关记录20条 . 查询时间(0.049 秒)
Genetic correlations between first parity and accumulated second to last parity reproduction traits as selection aids to improve sow lifetime productivity
Breeding Swine Genetic Parameters Reproduction Traits Subsequent Reproductive Performance
2017/3/9
The objective of this research was to estimate genetic correlations between number of piglets born alive in the first parity (NBA1), litter birth weight in the first parity (LTBW1), number of piglets ...
Fattening heifers on continuous pasture in mountainous regions–implications for productivity and meat quality
beef cattle Alpine pasture daily gain product quality fatty acid
2015/6/24
Economical and ecological issues as well as consumer demand for sustainably produced agricultural food rise the trends to fatten beef cattle on pasture during the grazing season. However, particularly...
Investigation of the effect of probiotics and potentiated probiotics on productivity of laying hens
laying hen probiotic potentiated probiotic
2015/6/8
Probiotic bacteria are used to balance a disturbed intestinal microflora and dysfunctions of the gastrointestinal tract (GIT). They could be an effective alternative to the use of synthetic substances...
The Technical and Financial Effects of Parenteral Supplementation with Selenium and Vitamin E during Late Pregnancy and the Early Lactation Period on the Productivity of Dairy Cattle
Reproductive Parameters Partial Budget Analysis Dairy Cattle
2016/5/18
This study aimed to determine the effects of parenteral selenium (Se) and vitamin E supplementation on economic impact, milk yield, and some reproductive parameters in high-yield dairy cows in the dry...
Effects of Corn and Soybean Meal Types on Rumen Fermentation, Nitrogen Metabolism and Productivity in Dairy Cows
Corn Soybean Meal Nitrogen Metabolism Productivity Dairy Cow
2016/5/18
Twelve multiparous Holstein dairy cows in mid-lactation were selected for a replicated 4×4 Latin square design with a 2 ×2 factorial arrangement to investigate the effects of corn and soybean meal (SB...
Evidence that acidifi cation-induced declines in plant diversity and productivity are mediated by changes in below-ground communities and soil properties in a semi-arid steppe
base mineral cations nitrogen cycling plant species richness plant–soil (belowground) interactions productivity semi-arid steppe soil aluminium ions soil microbial organisms soil nematodes structural equation modelling
2015/2/4
Anthropogenic acid deposition–induced soil acidification is one of the major threats to biodiversity, ecosystem functioning and services. Few studies, however, have explored in detail how above-ground...
Positive linear relationship between productivity andBlackwell Publishing Ltd diversity: evidence from the Eurasian Steppe
ecosystem management Eurasian steppe grazing land Inner Mongolia grassland precipitation gradient productivity–diversity relationship spatial scale species dissimilarity
2015/2/4
Understanding the productivity–diversity relationship (PDR) is a key issue in biodiversity–ecosystem functioning research, and has important implications for ecosystem management. Most studies have su...
Effects of Combination of Rice Straw with Alfalfa Pellet on Milk Productivity and Chewing Activity in Lactating Dairy Cows
Alfalfa Pellet Chewing Activity Dairy Cattle Milk Productivity Rice Straw Timothy
2016/5/16
An experiment was conducted to determine the effects of diets containing coarse-texture rice straw and small particle size alfalfa pellets as a part of total mixed ration (TMR) on milk productivity an...
Rainfed Areas and Animal Agriculture in Asia: The Wanting Agenda for Transforming Productivity Growth and Rural Poverty
Rainfed Less favoured areas Animal Agriculture Diversification Food Security Feed Resources
2016/5/9
The importance of rainfed areas and animal agriculture on productivity enhancement and food security for economic rural growth in Asia is discussed in the context of opportunities for increasing poten...
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 ...
Feed Resources for Animals in Asia: Issues, Strategies for Use, Intensification and Integration for Increased Productivity
Technology Application Research -extension- Farmer Linkages Strategies Asia
2016/5/6
The availability and efficient use of the feed resources in Asia are the primary drivers of performance to maximise productivity from animals. Feed security is fundamental to the management, extent of...
Intervention designs for perceived improved access to farm productivity- enhancing resources in the drylands: Case study of Kenya
Intervention designsresource access farm productivity dryland Kenya
2011/1/12
In Kenya’s dryland districts, gaps in access to productivity-enhancing resources are disconcertingly wide despite the growing number of external interventions. This research paper evaluates five past ...
Perinatal Nutrition of the Calf and Its Consequences for Lifelong Productivity
Perinatal Nutrition Calf Buffalo Productivity
2016/4/29
Provision of an optimal environment for the calf is critical to establishing the patterns of growth and development essential to allow the heifer to express its genetic potential for milk output and r...
THE EFFECTS OF AGE AND PREGNANCY TYPE IN COLOURED ENHANCED GOATS ON PRODUCTIVITY AND COMPOSITION OF MILK
University of Technology and Life Sciences in Bydgoszcz
2010/12/8
The aim of this work was to evaluate the effects of age and pregnancy type in coloured enhanced goats on productivity and composition of milk. Research material consisted of 552 colour enhanced goats ...
Effects of Neutral Detergent Fiber from Rice Straw on Blood Metabolites and Productivity of Dairy Cows in the Tropics Center.
Neutral Detergent Fiber Rice Straw Dairy Cows Tropics
2016/4/20
This study aimed to assess the effects of neutral detergent fiber (NDF) from rice straw on blood metabolites and productivity of dairy cows in the tropics. Eight Holstein×indigenous (75-87.5% Holstein...