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Combining Individual Phenotypes of Feed Intake With Genomic Data to Improve Feed Efficiency in Sea Bass ArchiMer
Besson, Mathieu; Allal, Francois; Chatain, Beatrice; Vergnet, Alain; Clota, Frederic; Vandeputte, Marc.
Measuring individual feed intake of fish in farms is complex and precludes selective breeding for feed conversion ratio (FCR). Here, we estimated the individual FCR of 588 sea bass using individual rearing under restricted feeding. These fish were also phenotyped for their weight loss at fasting and muscle fat content that were possibly linked to FCR. The 588 fish were derived from a full factorial mating between parental lines divergently selected for high (F+) or low (F–) weight loss at fasting. The pedigree was known back to the great grand-parents. A subset of 400 offspring and their ancestors were genotyped for 1,110 SNPs which allowed to calculate the genomic heritability of traits. Individual FCR and growth rate in aquarium were both heritable...
Tipo: Text Palavras-chave: Aquaculture; Feed conversion ratio; Fine phenotyping; Genomic selection; Individual feed intake; Restricted feeding; Selective breeding.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00486/59799/62927.pdf
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Effects of feed restriction and forage: concentrate ratio on digestibility, methane emission, and energy utilization by goats. Repositório Alice
LIMA, A. R. C.; FERNANDES, M. H. M. R.; TEIXEIRA, I. A. M. A.; FRIGHETTO, R. T. S.; BOMPADRE, T. F. V.; BIAGIOLI, B.; MEISTER, N. C.; RESENDE, K. T. de.
This study was carried out to to evaluate how feed restriction and different forage:concentrate ratios affect digestibility, methane emission (using the SF6 technique), and energy utilization of Anglo-Nubian goats. Fifteen (15) dry and non-pregnant Anglo Nubian goats, averaging 30±2.9 kg body weight, were used. The experiment was divided into two trials, the first of which was designed to study the effects of feed restriction (0% or ad libitum; 15% of feed restriction or equivalent to 85% of ad libitum intake; and 40% of feed restriction or equivalent to 60% of ad libitum intake) and the second, to study the effects of forage:concentrate (F:C) ratios (75:25, 54:46, and 25:75) in the diet. The sulfur hexafluoride (SF6) tracer gas method was used to collect...
Tipo: Nota Técnica/Nota Científica (ALICE) Palavras-chave: Emissão de gases; SF6; Cabra; Nutrição animal; Metano; Efeito estufa; Goats; Animal nutrition; Restricted feeding; Gass emissions; Greenhouse gases; Ruminants.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1062312
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Small crumbled diet versus powdered diet in restricted feeding management of juvenile Nile tilapia - doi: 10.4025/actascianimsci.v35i2.16767 Animal Sciences
Lima, Francisco Roberto dos Santos; Universidade Federal do Ceará; Akao, Michael Masaki Freitas; Universidade Federal do Ceará; Oliveira-Segundo, José Nacélio; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
The pellet size of the diet can affect both fish growth performance and the water quality of the rearing units. The present work assessed the effects of feeding juvenile Nile tilapia, Oreochromis niloticus (L.) a small crumbled diet (SCD; 0.8 mm) on water quality and growth performance. Fish were reared for six weeks in twenty 250-L polyethylene outdoor tanks at a density of 10 juveniles tank-1 (40 fish m-3). There were two feeding rates (standard and restricted) and two types of artificial fish diet (powdered and SCD). The standard feeding rates were reduced by 30% for restricted feeding. The concentrations of free CO2, reactive phosphorus, total ammonia nitrogen (TAN) and nitrite were higher in the full-fed tanks relative to the restricted-fed tanks. In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Unpelleted diet; Crumble; Particle size; Restricted feeding; Water quality; Oreochromis niloticus Unpelleted diet; Crumble; Particle size; Restricted feeding; Water quality; Oreochromis niloticus.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16767
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