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Título : Long-term implications of feed energy source in different genetic types of reproductive rabbit females. III, Fitness and productivity
Otros títulos: Fitness and productivity
Autor : Arnau Bonachera, Alberto.
Savietto, Davi.
Pascual Amorós, Juan José.
Materias: Rabbits - Breeding.Conejos - Reproducción.Conejos - Alimentación.Rabbits - Feeding and feeds.Cereales.Cunicultura.Almidón.Starch.Conejos - Genética.Rabbits - Genetics.Rabbits - Reproduction.Grain.
Fecha de publicación : 1-sep-2018
Editorial : Cambridge University Press.
Citación : Arnau Bonachera, A., Savietto, D. & Pascual, JJ. (2018). Long-term implications of feed energy source in different genetic types of reproductive rabbit females. III, Fitness and productivity. Animal, vol. 12, n. 9 (sept.), pp. 1886-1894. DOI: https://doi.org/10.1017/S1751731117003305
Resumen : The specialization process associated with genetic selection could be associated with functional disorders, affecting the reproductive success of females (‘fitness’). We hypothesized that by modulating energy acquisition and allocation of females we could balance productivity and reproductive success. To test this hypothesis, we used 203 rabbit females belonging to three genetic types: H (n=66) maternal line specialised in prolificacy, LP (n=67) generalist maternal line, R (n=70) paternal line specialised in growth rate. We fed each genetic type with two diets specifically designed to promote milk yield (AF) or body reserves recovery (CS). We controlled females between their first and fifth reproductive cycles, recording traits related with productivity and fitness of females. H females fed CS had on average 11.2􀁲0.43 kits with an individual weight of 54􀁲1.2 g at birth and 525􀁲11 g at weaning. Their conception rate when multiparous was 44% and their survival rate at the end of the experiment 30%. When they were fed AF, the individual weight of kits was 3.8 g heavier (P<0.05) at birth and 38 g heavier at weaning (P<0.05), the conception rate when multiparous increased 23 percentage points (P<0.05) and the survival rate at the end of the experiment 25 percentage points (P<0.05). LP females fed CS had on average 10.8􀁲0.43 kits with an individual weight of 52􀁲1.2 g at birth and 578􀁲11 g at weaning. Their conception rate when multiparous was 79% and their survival rate at the end of the experiment 75%. When they were fed AF, it only increased individual weight of kits at weaning (+39 g; P<0.05). R females fed CS had on average 8.4􀁲0.43 kits with an individual weight of 60􀁲1.2 g at birth and 568􀁲11 g at weaning. Their conception rate when multiparous was 60% and their survival rate at the end of the experiment 37%. When they were fed AF, they presented 1.4 kits less at birth (P<0.05) but heavier at birth (+4.9 g; P<0.05) and at weaning (+37 g; P<0.05). Therefore, we observed that genetic types prioritised different fitness 3 components and that diets could affected them. In this sense, seems that more specialised genetic types, were more sensitive to diets than the more generalist type.
Descripción : Este artículo se encuentra disponible en la siguiente URL: https://www.cambridge.org/core/journals/animal/article/longterm-implications-of-feed-energy-source-in-different-genetic-types-of-reproductive-rabbit-females-iii-fitness-and-productivity/698CE449C6372D39108F339BD642F62D
Este es el pre-print del siguiente artículo: Bonachera, A., Savietto, D. & Pascual, JJ. (2018). Long-term implications of feed energy source in different genetic types of reproductive rabbit females. III, Fitness and productivity. Animal, vol. 12, n. 9 (sept.), pp. 1886-1894, que se ha publicado de forma definitiva en https://doi.org/10.1017/S1751731117003305
This is the pre-peer reviewed version of the following article: Bonachera, A., Savietto, D. & Pascual, JJ. (2018). Long-term implications of feed energy source in different genetic types of reproductive rabbit females. III, Fitness and productivity. Animal, vol. 12, n. 9 (sept.), pp. 1886-1894, which has been published in final form at https://doi.org/10.1017/S1751731117003305
URI : http://hdl.handle.net/10637/10498
Derechos: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
ISSN : 1751-732X (Electrónico).
1751-7311
Aparece en las colecciones: Dpto. Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos




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