43 research outputs found
Litter Survival Differences between Divergently Selected Lines for Environmental Sensitivity in Rabbits
[EN] Simple Summary Two rabbit lines are divergently selected for increasing or decreasing the variability of litter size at birth. Decreasing the litter size variability produces more resilient females with less sensitivity to diseases, being an indirect selection way to improve environmental sensitivity. The kits' survival rate at weaning was higher in the homogeneous line. Moreover, this line led to a greater uniformity of the kits' weight at weaning, although the weight variability at birth was higher, which could be due to a higher lactation capacity of the homogeneous line. A divergent selection experiment on environmental sensitivity was performed in rabbits. The aim was to estimate the correlated response in kit weight and survival, litter weight, and weight distance from birth to weaning. The weight distance was calculated as the absolute value of the differences between the individual value and the mean value of its litter. The relationship between the probability of survival at 4 d of age, and the weight at birth, was studied. Environmental sensitivity was measured as litter size variability. A total of 2484 kits from 127 does from the low line, and 1916 kits of 114 does from the high line of the 12th generation were weighed. Both of the lines showed similar individual and litter weights at birth and weaning, and a similar survival rate at birth, and at 4 d of age. The survival rate at weaning was higher in the low line (0.67 and 0.62; P = 0.93). The weight distance was higher at birth, but lower at weaning in the low line (47.8 g and 54.1 g; P = 0.98). When the weight at birth was high, the kits had a higher survival rate. In conclusion, selection for environmental sensitivity showed a correlated response in the kits' survival, and in the homogeneity of litter weight at weaning.This study is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) with the Projects AGL2017-86083, C2-1-P and C2-2-P.Agea, I.; Garcia, M.; Blasco Mateu, A.; Argente, M. (2019). Litter Survival Differences between Divergently Selected Lines for Environmental Sensitivity in Rabbits. Animals. 9(9):1-9. https://doi.org/10.3390/ani9090603S1999GarcıÌa, M. L., & Baselga, M. (2002). Estimation of genetic response to selection in litter size of rabbits using a cryopreserved control population. Livestock Production Science, 74(1), 45-53. doi:10.1016/s0301-6226(01)00280-9SaÌnchez, J. P., Theilgaard, P., MiÌnguez, C., & Baselga, M. (2008). Constitution and evaluation of a long-lived productive rabbit line1. 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Resources allocation in reproductive rabbit does: a review of feeding and genetic strategies for suitable performance. World Rabbit Science, 21(3). doi:10.4995/wrs.2013.1236Bolet, G., Garreau, H., Joly, T., Theau-Clement, M., Falieres, J., Hurtaud, J., & Bodin, L. (2007). Genetic homogenisation of birth weight in rabbits: Indirect selection response for uterine horn characteristics. Livestock Science, 111(1-2), 28-32. doi:10.1016/j.livsci.2006.11.012Garreau, H., Bolet, G., Larzul, C., Robert-GraniĂ©, C., Saleil, G., SanCristobal, M., & Bodin, L. (2008). Results of four generations of a canalising selection for rabbit birth weight. Livestock Science, 119(1-3), 55-62. doi:10.1016/j.livsci.2008.02.009Hamilton, H. H., Lukefahr, S. D., & McNitt, J. I. (1997). Maternal nest quality and its influence on litter survival and weaning performance in commercial rabbits. Journal of Animal Science, 75(4), 926. doi:10.2527/1997.754926xVicente, J., GarcĂa-XimĂ©nez, F., & Viudes-de-Castro, M. (1995). 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Reproduction Nutrition Development, 40(1), 19-32. doi:10.1051/rnd:2000117Argente, M. J., Santacreu, M. A., Climent, A., & Blasco, A. (1999). Phenotypic and genetic parameters of birth weight and weaning weight of rabbits born from unilaterally ovariectomized and intact does. Livestock Production Science, 57(2), 159-167. doi:10.1016/s0301-6226(98)00166-3Xiccato, G., Trocino, A., Sartori, A., & Queaque, P. I. (2004). Effect of parity order and litter weaning age on the performance and body energy balance of rabbit does. Livestock Production Science, 85(2-3), 239-251. doi:10.1016/s0301-6226(03)00125-8Rebollar, P. G., PĂ©rez-Cabal, M. A., Pereda, N., Lorenzo, P. L., Arias-Ălvarez, M., & GarcĂa-Rebollar, P. (2009). Effects of parity order and reproductive management on the efficiency of rabbit productive systems. Livestock Science, 121(2-3), 227-233. doi:10.1016/j.livsci.2008.06.01
ProcĂ©s projectual dâun alçavidres
Lâobjectiu dâaquest treball Ă©s dissenyar el procĂ©s de gestiĂł dâun projecte dâautomociĂł tipus
fent especial atenciĂł en els punts econĂČmics i de planificaciĂł.
El procĂ©s projectual estĂ basat en un cas real dâun projecte dâalçavidres (element mĂČbil fixat
a la porta que mitjançant un cable enrotllat en un tambor fa lliscar el vidre per un carril amb
ajuda manual o elĂšctrica-motor.
El projecte contĂ© un manual en forma dâarxiu dâExcel que permet fer fĂ cilment el seguiment
dâun projecte dâautomociĂł. Lâarxiu inclou tots els punts que es van anar elaborant en el cas
real aixĂ com el resultat dels mateixos.
Alhora sâinclou una base de dades en format ACCES que permet fer el seguiment de
cadascuna de les modificacions al llarg dâun projecte per cadascun dels departaments
implicats
IntegraciĂłn didĂĄctica de "appsâ relacionadas con la producciĂłn animal en la docencia universitaria del Grado de IngenierĂa Agroalimentaria y Agroambiental
[ES] El objetivo de este trabajo es la integraciĂłn didĂĄctica de apps que se utilizan en la gestiĂłn de explotaciones ganaderas en el Grado de IngenierĂa Agroalimentaria y Agroambiental. Los resultados acadĂ©micos indicaron que las calificaciones mejoraron en 1.67 puntos cuando las apps fueron incluidas en la docencia. AdemĂĄs se realizĂł un cuestionario al estudiantado resultando que mĂĄs del 66% respondiĂł âTotalmente de acuerdoâ a la sentencia âLa tarea propuesta me ha facilitado el aprendizaje del temaâ. Ăsta fue tambiĂ©n la respuesta para el 33% del estudiantado a las sentencias âLa utilizaciĂłn de las apps me ha ayudado a comprender el temaâ y âRecomendarĂa el uso de apps en otros temas de la asignaturaâ. âNi de acuerdo ni en desacuerdoâ, fue la respuesta seleccionada por el 66% del estudiantado para la sentencia âLa utilizaciĂłn de las apps me ha acercado a la realidad del sector ganaderoâ. Las conclusiones de este trabajo son que la incorporaciĂłn de apps en la docencia mejora el rendimiento acadĂ©mico del estudiantado pues facilitan el aprendizaje. SerĂa aconsejable la utilizaciĂłn de esta metodologĂa en otros temas de la asignatura.[EN] The objective of this work is the didactic integration of apps that are used in the management of livestock farms in the Degree in Agro-Food and Agro-Environmental Engineering. The academic results indicated that the scores improved by 1.67 points when the apps were included in the teaching. In addition, a questionnaire was carried out for the student, resulting that more than 66% of the students answered "Totally agree" to the sentence "The proposed task has made it easier for me to learn the subject". This was also the response for 33% of the students to the sentences "The use of apps has helped me understand the subject" and "I would recommend the use of apps in other subjects of the subject". The answer "Neither agree nor disagree" was the answer selected by 66% of the students for the sentence "The use of apps has brought me closer to that of the livestock sector". The conclusions of this work are that the introduction of apps in teaching improves the academic performance of the student as they facilitate learning. It would be advisable to apply this methodology to other subjects.GarcĂa, ML.; Agea, I.; Argente, MJ. (2020). IntegraciĂłn didĂĄctica de "appsâ relacionadas con la producciĂłn animal en la docencia universitaria del Grado de IngenierĂa Agroalimentaria y Agroambiental. En IN-RED 2020: VI Congreso de InnovaciĂłn Educativa y Docencia en Red. Editorial Universitat PolitĂšcnica de ValĂšncia. 110-115. https://doi.org/10.4995/INRED2020.2020.11997OCS11011
ProcĂ©s projectual dâun alçavidres
Lâobjectiu dâaquest treball Ă©s dissenyar el procĂ©s de gestiĂł dâun projecte dâautomociĂł tipus
fent especial atenciĂł en els punts econĂČmics i de planificaciĂł.
El procĂ©s projectual estĂ basat en un cas real dâun projecte dâalçavidres (element mĂČbil fixat
a la porta que mitjançant un cable enrotllat en un tambor fa lliscar el vidre per un carril amb
ajuda manual o elĂšctrica-motor.
El projecte contĂ© un manual en forma dâarxiu dâExcel que permet fer fĂ cilment el seguiment
dâun projecte dâautomociĂł. Lâarxiu inclou tots els punts que es van anar elaborant en el cas
real aixĂ com el resultat dels mateixos.
Alhora sâinclou una base de dades en format ACCES que permet fer el seguiment de
cadascuna de les modificacions al llarg dâun projecte per cadascun dels departaments
implicats
ProcĂ©s projectual dâun alçavidres
Lâobjectiu dâaquest treball Ă©s dissenyar el procĂ©s de gestiĂł dâun projecte dâautomociĂł tipus
fent especial atenciĂł en els punts econĂČmics i de planificaciĂł.
El procĂ©s projectual estĂ basat en un cas real dâun projecte dâalçavidres (element mĂČbil fixat
a la porta que mitjançant un cable enrotllat en un tambor fa lliscar el vidre per un carril amb
ajuda manual o elĂšctrica-motor.
El projecte contĂ© un manual en forma dâarxiu dâExcel que permet fer fĂ cilment el seguiment
dâun projecte dâautomociĂł. Lâarxiu inclou tots els punts que es van anar elaborant en el cas
real aixĂ com el resultat dels mateixos.
Alhora sâinclou una base de dades en format ACCES que permet fer el seguiment de
cadascuna de les modificacions al llarg dâun projecte per cadascun dels departaments
implicats