The effect of strain of Holstein-Friesian dairy cow and pasture-based system on grass intake and milk production
| Autor: | Luc Delaby, Philippe Faverdin, Pat Dillon, Brendan Horan, M. Rath |
|---|---|
| Přispěvatelé: | Teagasc Agriculture and Food Development Authority (Teagasc), Department of Animal Science, Faculty of Agriculture, University of Ghana, Production du lait (PL), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) |
| Rok vydání: | 2006 |
| Předmět: |
Live weight
Biology Pasture 03 medical and health sciences HOLSTEIN-FRIESIAN RACE LAITIERE Animal science Lactation medicine Dry matter Pasture based ComputingMilieux_MISCELLANEOUS 030304 developmental biology 2. Zero hunger 0303 health sciences geography geography.geographical_feature_category Individual animal Strain (chemistry) ENERGY BALANCE FOOD INTAKE BALANCE ENERGETIQUE 0402 animal and dairy science food and beverages MILK PRODUCTION 04 agricultural and veterinary sciences Milk production 040201 dairy & animal science DAIRYS COWS medicine.anatomical_structure [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies Animal Science and Zoology |
| Zdroj: | HAL Animal Science Animal Science, Cambridge University Press (CUP), 2006, 82, pp.435-444 |
| ISSN: | 1748-748X 1357-7298 |
| DOI: | 10.1079/asc200661 |
| Popis: | The objective of this study was to investigate the effects of strain of Holstein-Friesian cow, pasture-based feeding system (FS) and their interaction on milk production, dry matter (DM) intake and energy balance over 3 years consecutively. The three strains were: high milk production North American (HP), high fertility and survival (durability) North American (HD) and New Zealand (NZ). The FS were: a high grass allowance (HG FS), a high concentrate (HC FS) and a high stocking rate (HS FS). A separate farmlet existed for each FS and a total of 99, 117 and 117 animals were used in year 1, year 2 and year 3, respectively, divided equally between strains and FS. Individual animal intakes were estimated three times each year at pasture; in May (P1), in July (P2) and October (P3), corresponding on average to day 102, 177 and 240 of lactation, respectively. The HP cows achieved the highest milk yield, the NZ the lowest, while the HD was intermediate; the HP achieved the highest solid corrected milk yield with no difference between the NZ and HD strains. The grass DM intake of the HP strain was highest ( P |
| Databáze: | OpenAIRE |
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