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Positive relationships between body weight of dairy heifers and their first-lactation and accumulated three-parity lactation production
(Elsevier on behalf of the American Dairy Science Association and the Federation of Animal Science Societies, 2019-03-01)
This study investigated the relationships between body weight (BW) and milk production of 140,113 New Zealand dairy heifers. Heifers were classified into 5 breed groups: Holstein-Friesian, Holstein-Friesian crossbred, ...
Specific genotypes of plantain (Plantago lanceolata) vary in their impact on sheep urine volume and nitrification in the urine patch
(New Zealand Grassland Association, 2018-11-13)
Plantain has the potential to reduce nitrate leaching through a number of mechanisms. In an indoor study, sheep were offered either perennial ryegrass or different plantain genotypes while aiming to achieve similar dry ...
Brief Communication: Effect of maternal diet in late gestation on development of dairy calves
(New Zealand Society of Animal Production (Inc), 2018)
To investigate whether feeding strategies to reduce urinary N excretion would have negative effects on calf development, two feeding systems were compared. A total of 190 pregnant, Friesian × Jersey dairy cows were randomly ...
Urinary nitrogen concentration from dairy heifers grazing kale supplemented with either plantain or perennial ryegrass baleage in winter
(NZ Grassland Association, 2016)
The effect of feeding two different supplements (perennial ryegrass or plantain baleage) on urinary nitrogen (N) excretion from dairy heifers (8 months old, 180 kg liveweight (LW)) grazing kale was examined in two successive ...
Relationship between social dominance and milk production of dairy cows grazing pasture
(New Zealand Society of Animal Production, 2016-06)
The objectives of this experiment were to study factors determining social dominance of grazing dairy cows and the relationship between social dominance and milk production under grazing systems. A total of 252 spring ...
Management practices of dairy cows grazing kale
Regaining body condition lost throughlactation is a common goal for manyNZ dairy systems. Kale is a major component of the winter diet for dairy cows, with high DM yield carried through winter with less deterioration in ...
The effects of feeding maize silage at different times prior to an herbage meal on dry matter intake, milksolids production and nitrogen excretion in late-lactation dairy cows
(New Zealand Society of Animal Production, 2015-06)
The objective of this study was to determine the effect of feeding maize silage at different times before the herbage meal on dry matter (DM) intake, milksolids (MS) production and nitrogen (N) excretion of late lactation ...
In vitro fermentation characteristics of ryegrass-white clover sward containing different proportions of chicory
(New Zealand Society of Animal Production, 2017)
Chicory (Cichorum intybus) is a deep-rooted grazeable forage used to overcome production and nutritive value shortfalls of perennial ryegrass (Loliun perenne) and white clover (Trifolium repens) swards during summer drought ...
Use of a urine meter to detect variation in urination behaviour of dairy cows on winter crops
(New Zealand Society of Animal Production, 2015-06-30)
Nitrate leaching loss from urine patches is predicted using a number of variables including urine N concentration, number of urine patches produced, and urine patch size however, there is a lack of quantitative data on the ...
Effect of post grazing residual and concentrate feeding on milk production in early lactation
(New Zealand Society of Animal Production, 2013)
Two strategies to increase nutrient supply to early lactation dairy cows were compared and the cumulative effects on pasture quality and milk production were investigated. In a farmlet experiment the effect of feeding ...