Zobrazeno 1 - 2
of 2
pro vyhledávání: '"J C, Vernooy"'
Evaluation of optimal age at first conception in gilts from data collected in commercial swine herds
Autor:
Y H, Schukken, J, Buurman, R B, Huirne, A H, Willemse, J C, Vernooy, J, van den Broek, J H, Verheijden
Publikováno v:
Journal of animal science. 72(6)
The purpose of this study was to find the economically optimal period of first conception in gilts, addressing the issues of lifetime reproductive performance and expected herd life. A profit equation was used to combine the effects into one economic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::723e220eb88f2780ad77a25aa3520b2e
https://pubmed.ncbi.nlm.nih.gov/8071159
https://pubmed.ncbi.nlm.nih.gov/8071159
Autor:
Y H, Schukken, M C, de Jong, R E, Komijn, J, Braamskamp, A A, Dijkhuizen, J P, Noordhuizen, J C, Vernooy, J H, Verheijden
Publikováno v:
Tijdschrift voor diergeneeskunde. 117(9)
The diagnoses Porcine Epidemic Abortion and Respiratory Syndrome (PEARS)-positive and PEARS-negative can be made using the following data on herd performance: the average number of stillborn piglets per litter, the average number of live piglets per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e3b697c403ca1b964e32175691f6afd9
https://pubmed.ncbi.nlm.nih.gov/1589863
https://pubmed.ncbi.nlm.nih.gov/1589863