Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Dietary supplementation of 11 different plant extracts on the antioxidant capacity of blood and selected tissues in lightweight lambs
    Leal, Leonel N. ; Jordán, María J. ; Bello, José M. ; Otal, Julio ; Hartog, Leo A. den; Hendriks, Wouter H. ; Martín-Tereso, Javier - \ 2019
    Journal of the Science of Food and Agriculture 99 (2019)9. - ISSN 0022-5142 - p. 4296 - 4303.
    kidney - lambs - liver - muscle - plant extracts - plasma

    BACKGROUND: Due to the growing public concern regarding the addition of chemical antioxidants to foods, focus has shifted towards natural alternatives. Because of their antioxidant potential, culinary herbs and spices have long been used to extend the shelf-life of foods. However, a better understanding of the fate of these products following intake is required to assess their use in lamb diets. RESULTS: Two hundred and eighty-eight Rasa Aragonesa male lambs (70 days old) were supplemented (5.0 g kg −1 compound feed) with bay, marjoram, oregano, rosemary, thyme, turmeric, cumin, caraway, dill, cinnamon and nutmeg extracts for 14 days before slaughter. Dietary supplementation with plant extracts had no effect on intake, growth performance or antioxidant activity in blood (TEAC values). In muscle, nutmeg supplementation increased (P < 0.05) the radical-scavenging capacity (TEAC), whereas a decrease in the radical-scavenging capacity was found for lambs supplemented with oregano, dill, cinnamon and nutmeg (ORAC values). In liver, nutmeg supplementation increased (P < 0.05) the antioxidant capacity (TEAC), whereas bay (ORAC), turmeric, cinnamon and nutmeg (DPPH values) decreased (P < 0.05) the radical-scavenging capacity of the tissue. In kidney, a lower (P < 0.05) radical-scavenging capacity (TEAC values) was found in lambs supplemented with oregano, cumin and caraway, whereas, turmeric, cumin, caraway, cinnamon and nutmeg increased (P < 0.05) the antioxidant capacity (ORAC values) in kidney. CONCLUSION: Supplementation of lamb diets with plant extracts affected radical-scavenging activity in muscle, liver and kidney. However, due to the divergent results of the different assays for the same tissue, it is not advisable to discriminate plant extracts using this approach.

    Wandelende maaiers en bemesters in Purmerend : 180 lammeren moeten veldkwaliteit Purmersteijn verbeteren
    Schoot, Jan Rinze van der - \ 2016
    sports grounds - grazing - lambs - sheep - sward renovation

    Al enige tijd liep fieldmanager Jan Butter ermee rond, het idee om de velden te laten begrazen door lammeren. Dit jaar werd die wens werkelijkheid. Op 3 juli werden onder toeziend oog van diverse belangstellenden 180 lammeren losgelaten op complex Purmersteijn. Daar begrazen en bepoepen de beestjes, afkomstig van een plaatselijke boer, zo’n drie weken lang de natuurgrasvelden, in de hoop dat zij de veldkwaliteit helpen verbeteren nog voordat het voetbalseizoen begint

    Schmallenberg virus : technical and scientific studies
    Poel, W.H.M. van der - \ 2014
    Lelystad : Central Veterinary Institute of Wageningen UR - 67
    dierpathologie - schmallenbergvirus - epidemiologie - pathogenese - transmissie - vectoren - diagnose - reverse transcriptase pcr - serologie - wilde dieren - huisdieren - kalveren - lammeren - koeien - schapen - animal pathology - schmallenberg virus - epidemiology - pathogenesis - transmission - vectors - diagnosis - reverse transcriptase pcr - serology - wild animals - domestic animals - calves - lambs - cows - sheep
    Schmallenberg virus primarily infects domestic and wild ruminants. Cattle and sheep seem to be the most susceptible species. Goats, pigs and camelids seem to be less susceptible. In pregnant cattle and sheep, the virus can infect multiple organs of the un-borne fetus. However, this infection often does not cause major lesions and infrequently leads to malformations.
    Identification of factors associated with increased excretion of foot-and-mouth disease virus
    Bravo De Rueda, C. ; Dekker, A. ; Eble, P.L. ; Jong, M.C.M. de - \ 2014
    Preventive Veterinary Medicine 113 (2014)1. - ISSN 0167-5877 - p. 23 - 33.
    immune-responses - dairy-cows - transmission - vaccination - pigs - infection - quantification - epidemiology - calves - lambs
    We investigated which variables possibly influence the amount of foot-and-mouth disease virus (FMDV) shed in secretions and excretions by FMDV infected animals, as it is likely that the amount of FMDV shed is related to transmission risk. First, in a separate analysis of laboratory data, we showed that the total amount of FMDV in secretions and excretions from infected animals is highly correlated with maximum titres of FMDV. Next, we collected data from 32 published scientific articles in which FMDV infection experiments were described. The maximum titres of FMDV reported in different secretions and excretions (the response variable) and the experimental conditions in which they occurred (the explanatory variables), were recorded in a database and analyzed using multivariate regression models with and without random effects. In both types of models, maximum titres of FMDV were significantly (p <0.05) associated with types of secretions and excretions, animal species, stage of the disease and days post infection. These results can be used to prioritize biosecurity measures in contingency plans.
    Vertical transmission of Rift Valley Fever Virus without detectable maternal viremia
    Antonis, A.F.G. ; Kortekaas, J.A. ; Kant-Eenbergen, H.C.M. ; Vloet, R.P.M. ; Vogel-Brink, A. ; Stockhofe, N. ; Moormann, R.J.M. - \ 2013
    Vector-Borne and Zoonotic Diseases 13 (2013)8. - ISSN 1530-3667 - p. 601 - 606.
    enzootic hepatitis - sheep - cattle - lambs - pathogenesis - pathology - vaccines - vectors - illness
    Rift Valley fever virus (RVFV) is a zoonotic bunyavirus that causes abortions in domesticated ruminants. Sheep breeds exotic to endemic areas are reportedly the most susceptible to RVFV infection. Within the scope of a risk assessment program of The Netherlands, we investigated the susceptibility of a native breed of gestating sheep to RVFV infection. Ewes were infected experimentally during the first, second, or third trimester of gestation. Mortality was high among ewes that developed viremia. Four of 11 inoculated ewes, however, did not develop detectable viremia nor clinical signs and did not seroconvert for immunoglobulin G (IgG) or IgM antibodies. Surprisingly, these ewes were found to contain viral RNA in maternal and fetal organs, and the presence of live virus in fetal organs was demonstrated by virus
    Feeding Chromonaela odorata during pregnancy to goat dams affects acceptance of this feedstuff by their offspring
    Hai, P.V. ; Everts, H. ; Tien, D. van; Schonewille, J.T. ; Hendriks, W.H. - \ 2012
    Applied Animal Behaviour Science 137 (2012)1-2. - ISSN 0168-1591 - p. 30 - 35.
    food preference - chromolaena-odorata - sensitive period - amniotic-fluid - maternal diet - tropical weed - behavior - lambs - exposure - flavor
    We investigated the effect of Chromonaela odorata ingestion by goat dams during pregnancy on intake of C. odorata by their kids. Alteration of prenatal feed preference may be used to increase feed intake of novel feeds and the transit from outdoor to indoor goat farming in Vietnam. Ten female goats were synchronized, inseminated and divided randomly into 2 equal groups. The experimental group was offered 50 g of sun dried C. odorata leave meal (COLM) along with a basal diet from day 45 to 135 of pregnancy while the control group was offered only the basal diet during this period. After weaning (3 mo), one kid from each goat dam in both groups was randomly selected and housed in individual cages. After a 9.5 h fast, each kid was offered 50 g of COLM daily at 8:30 am for 30 min for 4 weeks. Feeding activities were monitored with a video camera system. We determined mean COLM intake and indices of feed acceptance including latency to eat, number of visits without intake, meal frequency, eating bout length, eating time, intake rate, meal size and chewing time for each kid. Intake of COLM by goat kids born to dams fed COLM was significantly higher over the 4 weeks compared to goat kids born to dams not fed COLM (11.32 ± 3.60 g vs. 6.09 ± 1.91 g, P <0.028). This difference was more pronounced during weeks 3 and 4 than weeks 1 and 2. Goat kids from mothers fed COLM had a shorter latency to eat, a larger meal size and a longer chewing time than kids from mothers not fed COLM during pregnancy. We conclude that in utero transmission of feeding preference occurred from does to their offspring.
    Epizootic of ovine congenital malformations associated with Schmallenberg virus infection
    Brom, R. van der; Luttikholt, S.J. ; Lievaart-Peterson, K. ; Peperkamp, N.H.M.T. ; Mars, M.H. ; Poel, W.H.M. van der; Vellema, P. - \ 2012
    Tijdschrift voor Diergeneeskunde 137 (2012)2. - ISSN 0040-7453 - p. 106 - 111.
    schapenhouderij - lammeren - lammerenziekten - misvormingen - veterinaire praktijk - schmallenbergvirus - virusziekten - orthobunyavirus - sheep farming - lambs - lamb diseases - malformations - veterinary practice - schmallenberg virus - viral diseases - orthobunyavirus - cache valley virus - akabane virus - bluetongue virus - small ruminants - newborn lambs - sheep - arthrogryposis - disease - pathology - fever
    Epizootic outbreaks of congenital malformations in sheep are rare and have, to the best of our knowledge, never been reported before in Europe. This paper describes relevant preliminary findings from the first epizootic outbreak of ovine congenital malformations in the Netherlands. Between 25 November and 20 December 2011, congenital malformations in newborn lambs on sheep farms throughout the country were reported to the Animal Health Service in Deventer. Subsequently, small ruminant veterinary specialists visited these farms and collected relevant information from farmers by means of questionnaires. The deformities varied from mild to severe, and ewes were reported to have given birth to both normal and deformed lambs; both male and female lambs were affected. Most of the affected lambs were delivered at term. Besides malformed and normal lambs, dummy lambs, unable to suckle, were born also on these farms. None of the ewes had shown clinical signs during gestation or at parturition. Dystocia was common, because of the lambs' deformities. Lambs were submitted for post-mortem examination, and samples of brain tissue were collected for virus detection. The main macroscopic findings included arthrogryposis, torticollis, scoliosis and kyphosis, brachygnathia inferior, and mild-to-marked hypoplasia of the cerebrum, cerebellum and spinal cord. Preliminary data from the first ten affected farms suggest that nutritional deficiencies, intoxication, and genetic factors are not likely to have caused the malformations. Preliminary diagnostic analyses of precolostral serum samples excluded border disease virus, bovine viral diarrhoea virus, and bluetongue virus. In December 2011, samples of brain tissue from 54 lambs were sent to the Central Veterinary Institute of Wageningen University Research, Lelystad. Real-time PCR detected the presence of a virus, provisionally named the Schmallenberg virus, in brain tissue from 22 of the 54 lambs, which originated from seven of eight farms that had submitted lambs for post-mortem examination. This Schmallenberg virus was first reported in Germany and seems to be related to the Shamonda, Aino, and Akabane viruses, all of which belong to the Simbu serogroup of the genus Orthobunyavirus of the family Bunyaviridae. These preliminary findings suggest that the Schmallenberg virus is the most likely cause of this epizootic of ovine congenital malformations, which is the first such outbreak reported in Europe
    Lamvitaliteit bij melkschapen
    Verkaik, J.C. - \ 2011
    BioKennis bericht Geiten 2011 (2011)11. - 4
    lammeren - schapenhouderij - dierverzorging - biologische landbouw - opfoktechnieken - agrarische bedrijfsvoering - colostrum - diergezondheid - mortaliteit - lambs - sheep farming - care of animals - organic farming - rearing techniques - farm management - colostrum - animal health - mortality
    In de biologische melkschapenhouderij is de lammerensterfte relatief hoog. De sector wil de sterfte graag verminderen. In dit BioKennisbericht enkele tips en aanbevelingen naar aanleiding van onderzoek door Wageningen UR Livestock Research. De lamvitaliteit blijkt verbeterd te kunnen worden door een betere biestopname, een lagere besmettingsdruk, beter (gebruik van) managementinformatie en het inkruisen van andere rassen.
    Verbeteren welzijnsprestaties in de biologische veehouderij: korte termijn prioriteiten en aanzet tot lange termijn visie = Improving welfare performance in organic farming: short term priorities and longe term vision
    Bracke, M.B.M. - \ 2011
    Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 479) - 89
    dierenwelzijn - biologische landbouw - veehouderij - melkvee - horens - pluimvee - ruwvoer (roughage) - biggen - mortaliteit - lammeren - geiten - animal welfare - organic farming - livestock farming - dairy cattle - horns - poultry - roughage - piglets - mortality - lambs - goats
    This report describes five projects to improve animal welfare in organic farming: breeding polled (hornless) cattle, providing roughage to poultry, reducing mortality of piglets and lambs, and providing facilities for climbing and grooming in goats. In addition the development of a longer term vision on the future of organic farming is initiated, and its short-term implications are identified.
    Lammerensterfte verminderen
    Verkaik, J.C. - \ 2011
    biologische landbouw - schapenhouderij - lammeren - mortaliteit - doodsoorzaken - organic farming - sheep farming - lambs - mortality - causes of death
    Poster met onderzoeksinformatie over de oorzaken en het verminderen van lammerensterfte in de biologische schapenhouderij.
    Lammerensterfte, leverbot en ureum bij melkschapen
    Verkaik, J.C. ; Smolders, G. - \ 2010
    Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 417) - 27
    biologische landbouw - schapenhouderij - mortaliteit - lammeren - schapen - leverbot - ureum - geboorte - agrarische bedrijfsvoering - quarantaine - eiwitopname - zware metalen - organic farming - sheep farming - mortality - lambs - sheep - liver flukes - urea - birth - farm management - quarantine - protein uptake - heavy metals
    The monitored lamb mortality at organic dairy sheep farms is relativly high with big differences. Mortality over 10% is caused by poor management and infectious abortions. Short term improvements needs a structured approach. Treatment of the dairy sheep is limited to the dry period. Avoiding infection by housing ewes in early lactation appears effective. Liver fluke is well predictable on the prognosis and the fluke and grazing history. The time between infection intake and appearance in blood or dung makes these researches risky. Urea appears dependable upon the amount of protein fed. Protein wastage reduces when more energy is fed.
    Lammeren grazen op een veldkavel
    Eekeren, N.J.M. van - \ 2010
    BioKennis bericht Geiten (2010)7. - 4
    biologische landbouw - dierenwelzijn - geitenhouderij - lammeren - graastijd - maagdarmziekten - coccidiose - organic farming - animal welfare - goat keeping - lambs - grazing date - gastrointestinal diseases - coccidiosis
    Veel geitenbedrijven hebben een beperkt huiskavel. Als de lammeren ook op het huiskavel geweid worden, wordt de beweidingruimte voor de melkgevende geiten nog krapper. Een oplossing zou zijn om de lammeren van huis te laten grazen. Sander Koster van Gerbrande State heeft al jarenlang goede ervaringen met het dag en nacht weiden van lammeren op afstand. Afgelopen jaar hebben ook de families Wanders en Tuenter hun lammeren naar tevredenheid op een veldkavel geweid. In dit bioKennisbericht zijn hun ervaringen op een rij gezet.
    Effect of qualitative feed restriction on energy metabolism and nitrogen retention in sheep
    Kamalzadeh, A. ; Koops, W.J. - \ 2009
    South African Journal of Animal Science = Suid-Afrikaanse Tydskrif Vir Veekun 39 (2009)1. - ISSN 0375-1589 - p. 30 - 39.
    compensatory growth - body-composition - weight - steers - lambs - efficiency - nutrition - hay
    Periodic restrictions in feed quality and quantity is an important phenomenon in regions where animal production should bridge the gap between periods of forage production separated by a dry season. Eighteen Swifter male lambs, weaned at the age of ca. three months, were used to quantify effects of feed quality restriction and realimentation on changes in energy and nitrogen metabolism. The diet consisted of grass straw (17 MJ of gross energy [GE] and 46 g crude protein [CP] per kg dry matter [DM]) on an ad libitum basis and 35 g/kg(0.75)/d mixed concentrates (16.5 MJ of GE and 173 g CP per kg DM). At the age of ca. 3.5 months the animals were randomly divided into six blocks, based on live weight, according to a randomized complete block design. Within each block, the animals were randomly assigned to two restricted treatments (RI and R2) and an unrestricted control (C) treatment. Treatments R1 and R2 were subjected to feed quality restriction by withholding the concentrate for 3 and 4.5 months, respectively. A modified linear model was developed to study the effects of restriction and realimentation. The comparison between treatments was made by analyzing the data of the RI and R2 animals as deviations from the control animal in each block. During the restriction period, restricted animals lost weight and showed negative energy (EB) and nitrogen balances (NB), whereas their intake of low quality roughage increased significantly. During the realimentation period (5 and 6 months for the RI and R2 animal, respectively), the R1 and R2 animals grew significantly faster than the control animals. The realimented animals persisted in ingesting significantly more low quality roughage and their EB and NB were significantly greater that those of the control animals. The R2 animals needed a longer period of realimentation because of a longer period of restriction. The expression of compensatory growth was mainly related to a sustained higher grass straw (low quality roughage) intake during the realimentation periods, and a significantly greater efficiency of metabolizable energy intake. The maintenance requirement of realimented animals was significantly lower only during the initial stages of realimentation compared with the controls. It seemed as if a three months feed restriction period in weaned sheep was better than 4.5 months
    Kijk lammeren vaker in de ogen
    Verkaik, J.C. ; Borgsteede, F.H.M. - \ 2009
    [Lelystad] : Wageningen UR, Animal Sciences Group
    schapen - lammeren - maagdarmziekten - wormen - behandeling - haemonchus contortus - sheep - lambs - gastrointestinal diseases - helminths - treatment - haemonchus contortus
    Ontwormen op basis van de kleur van het ooglid gaat verder dan de huidige behandelrichtlijn. Het uitsluitend ontwormen van lammeren in de koppel die lijden aan haemonchose is daarmee de meest verantwoorde manier van ontwormen. Het minimaliseert de selectie op resistente maagdarmwormen en maximaliseert het behoud van de effectiviteit van het gebruikte middel op het bedrijf. De controle en selectie op kleur kost wel meer tijd
    'Aflammeren voor topsporters'
    Govaerts, W. ; Eekeren, N.J.M. van - \ 2009
    BioKennis bericht Geiten 6 (2009). - 4
    biologische landbouw - geitenhouderij - lammeren - diergezondheid - diervoeding - melkproductie - geitenmelk - lactatie - organic farming - goat keeping - lambs - animal health - animal nutrition - milk production - goat milk - lactation
    Geiten zijn toppers in het produceren van melk als we ze goed in de teugels hebben. Lammeren produceren is vaak een moeilijke opdracht die er tussendoor komt om ze weer terug aan de melk te krijgen en nieuwe aanwas te hebben. In dit bioKennisbericht kijken we welke dingen vaak mislopen aan het einde van de lactatie, de droogstand en de opstart. Vanuit de ervaring met de zaken die vaak mislopen, komen we tot een mogelijke aanpak om deze problemen te vermijden. Met ervaringsverhalen van geitenhouders geven we aan hoe het kan. Daarnaast geven we enkele handvatten om de geiten bij te sturen als het nodig is
    Kijk lam vaker in ogen
    Verkaik, J.C. ; Borgsteede, F.H.M. - \ 2009
    V-focus 6 (2009)4. - ISSN 1574-1575 - p. 30 - 31.
    schapenhouderij - schapen - lammeren - diergezondheid - antiparasitica - sheep farming - sheep - lambs - animal health - antiparasitic agents
    Aan de kleur van het ooglid kan worden afgelezen of een lam lijdt aan bloedarmoede, als gevolg van haemonchose. Op basis van deze waarneming kunnen alleen de lammeren die lijden aan haemonchose worden ontwormd. Dit minimaliseert de selectie op resistente maagdarmwormen en maximaliseert het behoud van de effectiviteit van het gebruikte middel op het bedrijf
    Welzijnswijzer voor beginnende schapenhouder
    Animal Sciences Group (ASG), - \ 2009
    schapenhouderij - dierenwelzijn - schapenziekten - lammeren - agrarische bedrijfsvoering - schapen - dierverzorging - sheep farming - animal welfare - sheep diseases - lambs - farm management - sheep - care of animals
    Animal Sciences Group (ASG) heeft een folder ontwikkeld voor schapenhouders over dierenwelzijn. De bedoeling is om beginnende schapenhouders hiermee op weg te helpen, nl. met de 6 belangrijkste problemen: parasieten, complicaties door oormerk, lammersterfte, blauwtong, hittestress en kreupelen
    Using injectable transponders for sheep identification = Het gebruik van injecteerbare transponders voor identificatie van schapen
    Hogewerf, P.H. ; Ipema, A.H. ; Binnendijk, G.P. ; Lambooij, E. ; Schuiling, H.J. - \ 2007
    Lelystad : Animal Sciences Group (Rapport / Animal Sciences Group 78) - 18
    schapen - schapenhouderij - transponders - identificatie - lammeren - sheep - sheep farming - transponders - identification - lambs
    Haalbaarheid identificatie van schapen met transponders geïnjecteerd in lies, buik, nek of oksel is bestudeerd. Lage verliezen en gemakkelijke terugwinning werd gevonden voor buikholte
    Milk fatty acid composition and associated rumen lipolysis and fatty acid hydrogenation when feeding forages from intensively managed or semi-natural grasslands
    Lourenco, M. ; Vlaeminck, B. ; Bruinenberg, M.H. ; Demeyer, D. ; Fievez, V. - \ 2005
    Animal Research 54 (2005)6. - ISSN 1627-3583 - p. 471 - 484.
    conjugated linoleic-acid - lactating dairy-cows - blue young bulls - legume silages - in-vitro - fish-oil - biohydrogenation - trans - digestion - lambs
    In order to evaluate the effect of replacing intensive forage by semi-natural grassland products on rumen lipid metabolism and milk fatty acid composition, four lactating and rumen canulated Holstein cows were used in a 4×4 Latin square design. Four different diets were fed: diet 100 IM - 100% intensively managed silage (IM), diet 20 SPP - 80% IM plus 20% semi-natural but species poor silage (SPP), diet 60 SPP - 40% IM plus 60% SPP and diet 60 SPR - 40% IM plus 60% semi-natural species rich silage (SPR). The silages showed significant differences in total fat content and in proportions of C18:2 n-6 and C18:3 n-3. Despite the reduced dietary supply of C18:3 n-3 with diets 60 SPP and 60 SPR, differences in milk C18:3 n-3 were small, suggesting higher recoveries of C18:3 n-3. Presumably, the latter are related to a higher transfer efficiency of C18:3 n-3 from the duodenum to the mammary gland, since rumen biohydrogenation, estimated from rumen pool size and first order rumen clearance kinetics, were similar among diets. CLA c9t11 in milk from cows fed diet 60 SPR were almost doubled compared to feeding one of the other diets. This has been related to the partial inhibition of rumen biohydrogenation of C18:3 n-3 and/or C18:2 n-6, as suggested by the increased proportions of hydrogenation isomers and reduced stearic acid proportions in rumen pool samples. In conclusion, the results suggest that the use of semi-natural grasslands in the diet of the animals reduce to some extent complete rumen biohydrogenation, which leads to an increase in milk CLA.
    Voerstrategieën voor lammeren
    Verkaik, J.C. - \ 2004
    Lelystad : Praktijkonderzoek Veehouderij (PV) (PraktijkRapport / Animal Sciences Group, Praktijkonderzoek : Schapen ) - 24
    lammeren - schapen - lammerenvoeding - bijvoeding - voedingsrantsoenen - begrazing - schapenstallen - diervoeding - lambs - sheep - lamb feeding - supplementary feeding - feed rations - grazing - sheep housing - animal nutrition
    De praktijk heeft behoefte aan meer inzicht in de voerstrategieën voor lammeren. Meer inzicht kan de schapenhouders helpen de lammeren daadwerkelijk slachtrijp en meer slacht- in plaats van weidelammeren af te leveren. Meer kennis over de voerstrategieën maakt de keuze voor een afleverstrategie die aan sluit bij de bedrijfssituatie eenvoudiger en men kan beter anticiperen op (verwachte) marktontwikkelingen. Het zelf slachtrijp maken van lammeren is in de regel economisch aantrekkelijk doordat de laatste kilogrammen groei vaak weinig kosten en de tussenhandel wordt uitgesloten. Het slachtrijp maken op het eigen bedrijf vermindert, met het beperken van dierbewegingen, de kans op uitbraken van besmettelijke dierziekten als mond- en klauwzeer. Vanuit deze overwegingen heeft het Praktijkonderzoek drie gebruikelijke voerstrategieën voor lammeren onderzocht: 1. Het bijvoeren van lammerkorrel tijdens het weideseizoen – beperkt/onbeperkt 2. Het uitscharen op einde van het weideseizoen naar najaargras op melkveepercelen 3. Het op stal afmesten na een weideperiode – rantsoenvergelijking: voerintensiteit, krachtvoer- en ruwvoersoort
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