Results 121 to 130 of about 196,421 (283)
The disappearance of malaria from Denmark, 1862–1900
The Economic History Review, EarlyView.Abstract The reason for malaria's disappearance from northwestern Europe in the early twentieth century has long been discussed but remains an unresolved conundrum. This is partially due to a previous focus on the early modern era, and partially because various theories have never been tested against each other.
Mathias Mølbak Ingholt +3 more
wiley +1 more source
Животновъдни науки, 2015 The objective of this investigation was to establish the milk yield, the physicochemical and the fatty acid composition of milk from sheep of the Synthetic Population Bulgarian Dairy Breed, reared indoor and on natural pasture with supplementation of ...
СИЛВИЯ Иванова +3 more
doaj
Productivity in the Sheep Sector [PDF]
Previous papers at this conference over the years have dealt with trends in productivity in the total agricultural sector, the forestry sector and the dairy sector.
Johnson, Robin
core +1 more source
Modelling the impact of policies to reduce environmental impacts in the New Zealand dairy sector [PDF]
, 2011 Agriculture remains a major sector of the New Zealand economy, with the vast majority of farm and food production exported. The accelerating intensification of farming in New Zealand over recent decades raises concern over the current sustainability of ...
Rae, Allan N., Strutt, Anna
core +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT The aim of the present study was to infer genetic (co) variance components and to estimate parity‐specific breeding values for the female fertility traits non‐return rate after 56 days, the interval from calving to first service and days open by applying random regression models on a time‐dependent parity scale. In this regard, we considered a
Sina Sakhaei‐far +2 more
wiley +1 more source
Participatory breeding system for laying hens [PDF]
, 2010 Livestock breeds (and breeding systems) developed for intensive production systems often do not perform as expected in organic and extensive systems.
Leenstra, Ferry
core
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT The ability of ruminants to mobilise and restore body reserves (BR) over time, referred to as BR dynamics, is currently considered an interesting biological component to be included in breeding programs targeting enhanced BR resilience. However, genetic studies of proxies for BR levels and BRD remain scarce, particularly in small ruminants ...
Agnes Nyamiel +8 more
wiley +1 more source
Financial Performance Value-Added Dairy Operations in New York, Vermont and Wisconsin [PDF]
Federal, state and local governments have funded various efforts to support value added agriculture, often implicitly assuming that the enterprises would be profitable and that the transition from commodity producer to producer-processor-marketer ...
Nicholson, Charles F. +1 more
core +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Enhancing female longevity through regular calvings improves herd replacement rates and reduces the costs associated with replacing low reproductive efficiency animals. Stayability (STAY), defined as a cow's ability to remain productive in the herd, is a categorical trait that challenges traditional genetic evaluation due to its non‐normal ...
Letícia Silva Pereira +5 more
wiley +1 more source
Organic farm incomes in England and Wales 1995/96 - 1997/98 [PDF]
, 2000 This report is associated with the less detailed final report of Defra project OF0190, on the same theme, archived at https://orgprints.org/6606 This report presents results from research work carried out for the Ministry of Agriculture, Fisheries and ...
Fowler, Susan +2 more
core