Zobrazeno 1 - 10
of 82
pro vyhledávání: '"W.J. Koops"'
Autor:
C.H.A.M. Eilers, W.J. Koops
Publikováno v:
Outlook on Agriculture, 33(2), 113-123
Outlook on Agriculture 33 (2004) 2
Outlook on Agriculture 33 (2004) 2
This study aims to compare the development of iguana production systems in Panama with the development of other new production systems involving non-traditional animal species. Experts on new production systems using pacas, grasscutters, deer, eel, c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a732d458004eb46c5e7a9c2e6644f89a
https://doi.org/10.5367/000000004773973000
https://doi.org/10.5367/000000004773973000
Publikováno v:
Acta Agriculturae Scandinavica Section A-Animal Science 53 (2003) 1
Acta Agriculturae Scandinavica Section A-Animal Science, 53(1), 41-50
Acta Agriculturae Scandinavica Section A-Animal Science, 53(1), 41-50
Growth of mink from 1 to 28 weeks of age was modelled, using weekly body weights, and effects on model parameters of selection lines for high and low feed efficiency, sex and interaction were tested. From results on average growth curves, individual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c14f9d65109b93ced31fbc833b7be77
https://doi.org/10.1080/09064700310002035
https://doi.org/10.1080/09064700310002035
Autor:
W.J. Koops, M. Grossman
Publikováno v:
Journal of Dairy Science 86 (2003)
Journal of Dairy Science, 86, 988-998
Journal of Dairy Science, 86, 988-998
Objectives of this study are to describe the biological basis for multiphasic milk production and to propose a new empirical model for the lactation curve. To illustrate this model, we used data on 3573 first-lactation Holsteins having lactations of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79bc59c183fc9d37ff32b85d0d059c62
https://doi.org/10.3168/jds.s0022-0302(03)73682-0
https://doi.org/10.3168/jds.s0022-0302(03)73682-0
Publikováno v:
ResearcherID
Agriculture, Ecosystems & Environment, 95(1), 1-18. Elsevier
Agriculture, Ecosystems and Environment 95 (2003)
Agriculture, Ecosystems and Environment, 95, 1-18
Agriculture, Ecosystems & Environment, 95(1), 1-18. Elsevier
Agriculture, Ecosystems and Environment 95 (2003)
Agriculture, Ecosystems and Environment, 95, 1-18
Public concern nowadays is an important frame of reference for the development of agricultural production systems. The development of such systems, therefore, involves both society level and production system level. Following Zadeh's 'principle of in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d3403e4911b56a0779c9bbfd2e2638d
https://hdl.handle.net/1765/65363
https://hdl.handle.net/1765/65363
Publikováno v:
Acta Agriculturae Scandinavica Section A-Animal Science, 53(1), 51-57
Acta Agriculturae Scandinavica Section A-Animal Science 53 (2003) 1
Acta Agriculturae Scandinavica Section A-Animal Science 53 (2003) 1
Objectives were to analyse absolute and relative size of mink at maturity, and to test effects of selection line, sex and interaction on size. For male and female mink selected for high or low feed efficiency, size at 30 weeks was analyzed for body w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46587173dc16b55e38356db912be800b
https://doi.org/10.1080/09064700310002044
https://doi.org/10.1080/09064700310002044
Publikováno v:
Outlook on Agriculture 30 (2001)
Outlook on Agriculture, 30, 187-194
Outlook on Agriculture, 30, 187-194
Iguana production in Nicaragua, Costa Rica and Panama is a complex system with various stakeholders. In order to explore the opinions of stakeholders about iguana production, the system was discussed with two stakeholder groups: Farmers and Organizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::446d5b9306b4ac5b52ec984965302593
https://doi.org/10.5367/000000001101293643
https://doi.org/10.5367/000000001101293643
Publikováno v:
Journal of Dairy Science 83 (2000) 6
Journal of Dairy Science, 83(6), 1371-1380
Journal of Dairy Science Vol. 83, No. 6 : 1371-1380, 2000
Repositorio UNA
Universidad Nacional de Costa Rica
instacron:UNA
Journal of Dairy Science, 83(6), 1371-1380
Journal of Dairy Science Vol. 83, No. 6 : 1371-1380, 2000
Repositorio UNA
Universidad Nacional de Costa Rica
instacron:UNA
Nine mathematical models were compared for their ability to predict daily milk yields (n = 294,986) in stan- dard 305-d and extended lactations of dairy cows of Costa Rica. Lactations were classified by parity (first and later), lactation length (9 t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00fe0a9098c74d6a79e6a7920b0bcf05
https://doi.org/10.3168/jds.s0022-0302(00)75005-3
https://doi.org/10.3168/jds.s0022-0302(00)75005-3
Publikováno v:
Journal of Dairy Science 82 (1999)
Journal of Dairy Science, 82, 2192-2197
Journal of Dairy Science, 82, 2192-2197
The objectives of our study were to propose a new, simple, and easy-to-understand definition for persistency of lactation yield and to develop a new mathematical model to describe a lactation curve, one that includes a measure for persistency of lact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76773f81e38216ac9485722b55980bf9
https://doi.org/10.3168/jds.s0022-0302(99)75464-0
https://doi.org/10.3168/jds.s0022-0302(99)75464-0
Publikováno v:
Livestock Production Science 53 (1998)
Livestock Production Science, 53, 57-67
Livestock Production Science, 53, 57-67
Fifty six crossbred Swifter (Texel ♂×Flemish ♀) male lambs, born in March 1993 and weaned at age ≈2 months, were used to quantify effects of feed quality restriction with respect to growth rates of weight and dimensions of the body. The ration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67b234f8da44b15f8bd98a0a23783204
https://doi.org/10.1016/s0301-6226(97)00136-x
https://doi.org/10.1016/s0301-6226(97)00136-x