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Impacts of selecting sheep for resistance and resilience to gastro-intestinal nematode parasites
(Lincoln University, 2018)
This study investigated the impacts of decades of divergent selection for either resistance or resilience to gastrointestinal nematode (GIN) parasite infection in Romney sheep lines and involved a series of three studies.
Study ...
The effect of spring grazing management on yield, animal liveweight gain and root reserves of lucerne (Medicago sativa L.).
(Lincoln University, 2011)
Lucerne (Medicago sativa L.) is a common pasture legume grown in New Zealand. Rotational grazing is recommended for ensuring stand production and persistence. However, during lambing set stocking ewes and lambs is the ...
Investigation of ovine DGAT1 intron 1 variation and its association with variation in carcass traits
(Lincoln University, 2016)
The economic importance of a carcass is determined by the quantity of saleable meat. The quality of a carcass is determined by the lean meat yield and the ratio of lean meat to fat. Therefore, the heightened quality is ...
Livestock and pasture production from dryland lucerne and two lucerne/grass mixtures over four years in Canterbury
(Lincoln University, 2017)
The productivity of a lucerne monoculture, lucerne/brome and lucerne/cocksfoot binary mixtures grown on shallow soils at Ashley Dene, Canterbury, were compared under grazing over four years. Pastures were grazed with ...
Identification of horned and polled Bos taurus using a gene test
(Lincoln University, 2017-11-10)
The absence of horns in Bos taurus is under the genetic control of the autosomal dominant Polled locus which has been genetically mapped to the centromeric region of cattle chromosome 1 (BTA1). The position of the Polled ...
Potential anthelmintic properties of nitrogenous fertilisers
(Lincoln University, 2016)
This dissertation describes a series of experiments designed to understand the potential anthelmintic properties of nitrogenous fertilisers for control of gastrointestinal parasites. Anthelmintic administration is no longer ...
Will the New Zealand deer industry remain competitively profitable in the future?
(Lincoln University, 2014)
The New Zealand Deer Industry experienced no apparent animal productivity gains in the decade leading up to 2004 while the competing red meat sectors increased productivity significantly. Compounding this issue for the ...
Nitrogen isotopic fractionation and nitrogen use efficiency in beef and dairy cattle
(Lincoln University, 2014)
Future rises in world population, increased demand for food production and greater concern for environmental emissions means that new strategies are required for sustainable growth of ruminant industries. Improvement of ...
Characterisation of genes associated with sheep growth and carcass traits
(Lincoln University, 2014)
Animal growth and carcass composition are of commercial importance for sheep meat production. Growth and fat deposition are affected by both environmental factors and genetic factors. Genetic selection to produce leaner, ...
Optimising a weighing protocol for sheep
(Lincoln University, 2014)
A series of experiments designed to investigate live weight error and analyse the effect fasting and multiple weighing has on live weight measurements were carried out. In the first experiment 24 mixed aged ewes were fasted ...