000063173 001__ 63173 000063173 005__ 20200221144222.0 000063173 0248_ $$2sideral$$a97071 000063173 0247_ $$2doi$$a10.2527/jas.2016-0605 000063173 037__ $$aART-2016-97071 000063173 041__ $$aeng 000063173 100__ $$0(orcid)0000-0003-3074-5778$$aMuniesa, A.$$uUniversidad de Zaragoza 000063173 245__ $$aProposal of a production and management index (PMI) for tilapia farms 000063173 260__ $$c2016 000063173 5060_ $$aAccess copy available to the general public$$fUnrestricted 000063173 5203_ $$aTilapia is one of the most important species in aquaculture; however, there is no available index to show the performance of a production unit. It is desirable to assess the productivity using indexes, such as the production and management index for shrimps and the European production efficacy factor for broilers. These indexes are based on data production: growth, survival, and feed conversion of a full production cycle. Taking into account these parameters, we propose a production and management index (PMI) for tilapia that is applicable for a specific period of the production cycle. For the construction and validation of the PMI we have used production data from 8, 614 monthly records of 2 tilapia farms in Huila Department (Colombia), and because of the complexity of tilapia management, different anomalous situations have been detected and then defined as exceptions. As a result, 419 records were considered extreme values because 1 or more exceptions were met. The value of the PMI varies from 0 (the worst situation) to 3.55, which reflects high variability. We have constructed a PMI for tilapia as the product of 3 elements to obtain a positive value index. Instead of classic parameters, we had to calculate an adapted version of them: the relative average daily growth, the survival (as a complementary value of the estimated monthly mortality), and a feed conversion ratio index. To assess the utility of the PMI, some comparisons were performed using records from black and red tilapia. We observed significant differences depending on tilapia strain (PMIblack = 1.0248 vs. PMIred = 1.1661; P < 0.001), age (better values for small fish), and season (PMIrainy = 1.0847 vs. PMIdry = 1.1011; P = 0.026). According to these results, we can conclude that the PMI could be a useful tool for tilapia farmers, despite the complexity of the calculation. 000063173 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000063173 590__ $$a1.863$$b2016 000063173 591__ $$aAGRICULTURE, DAIRY & ANIMAL SCIENCE$$b8 / 57 = 0.14$$c2016$$dQ1$$eT1 000063173 592__ $$a1.034$$b2016 000063173 593__ $$aAnimal Science and Zoology$$c2016$$dQ1 000063173 593__ $$aMedicine (miscellaneous)$$c2016$$dQ1 000063173 593__ $$aFood Science$$c2016$$dQ1 000063173 593__ $$aGenetics$$c2016$$dQ2 000063173 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000063173 700__ $$aRey-Castaño, A. L. 000063173 700__ $$0(orcid)0000-0002-6314-6395$$aRuiz-Zarzuela, I.$$uUniversidad de Zaragoza 000063173 700__ $$aGuarín, M. 000063173 700__ $$aIregui, C. 000063173 700__ $$0(orcid)0000-0002-1204-4356$$ade Blas, I.$$uUniversidad de Zaragoza 000063173 7102_ $$11009$$2773$$aUniversidad de Zaragoza$$bDpto. Patología Animal$$cÁrea Sanidad Animal 000063173 773__ $$g94, 11 (2016), 4872-4881$$pJ. anim. sci.$$tJOURNAL OF ANIMAL SCIENCE$$x0021-8812 000063173 85641 $$uhttps://www.animalsciencepublications.org/publications/jas/pdfs/94/11/4872$$zTexto completo de la revista 000063173 8564_ $$s658118$$uhttps://zaguan.unizar.es/record/63173/files/texto_completo.pdf$$yVersión publicada 000063173 8564_ $$s110664$$uhttps://zaguan.unizar.es/record/63173/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000063173 909CO $$ooai:zaguan.unizar.es:63173$$particulos$$pdriver 000063173 951__ $$a2020-02-21-13:15:51 000063173 980__ $$aARTICLE