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Some factors affecting production and milk composition characters in a crossbreeding experiment involving Gabali and V- line rabbits in Egypt

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Some factors affecting production and milk composition characters in a crossbreeding experiment involving Gabali and V- line rabbits in Egypt

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dc.contributor.author Iraqi, M.M.
dc.contributor.author Shenana, M.E.
dc.contributor.author Baselga, M.
dc.date.accessioned 2011-02-08T12:23:52Z
dc.date.available 2011-02-08T12:23:52Z
dc.date.issued 2007
dc.identifier.issn 1257-5011
dc.identifier.uri http://hdl.handle.net/10251/9495
dc.description.abstract [EN] Data from 662 litters and 221 samples (two replicates per each sample) of rabbit milk were collectedfrom three different genetic groups [Gabali (G), V-line (V) and GxV (F1)] to study the effect of line and of somenon-genetic factors affecting production and milk composition traits. The studied traits were: number bornalive (LSBA); litter size at weaning (LSW); litter weight born alive (LWBA); litter weight at weaning (LWW); totalmilk yield (TMY) and protein, fat, total solids (TS), ash, phosphorus (P), potassium (K), sodium (Na), calcium(Ca) and magnesium (Mg) milk content. The genetic group effect was significant for LSBA [V (7.3) and F1(7.3)were superior to G (6.6)); LWBA (higher values for V (416 g) and F1 (405 g) than for G (382 g)]; TMY [G (3497g) and F1(3486 g) higher than V (3042 g)]; milk fat [F1 (26%) and G (25%) superior to V (23%)] and milkTS[F1(42%) superior to G (40%) and V (39%)]. The estimates of the heterosis effect ranged between 1.6% and12.8% for production and milk gross chemical traits, being significant only for milk fat content (9.1%). Thepositive values of the heterosis estimates for those traits and the complementarity between the G breed andthe V line, the G superior in milk related traits but the V superior in prolificacy, show the interest of their crossand of the synthetic lines derived from them. The heterosis was non-significant for milk mineral content traits.The parity effects were significant for LSBA, fat, TS, ash and K (the maxima were reached at 6th or 5th parity).The effect of week of lactation was significant for fat, ash and TS, corresponding the maximum values of fatand TS to the 3rd and 4th week. The year-season or the year-month effects were significant for all traitsshowing the importance of including these time-period factors into the statistical models proposed for thetraits. es_ES
dc.description.sponsorship This project was supported by the Spanish Agency of International Cooperation (A.E.C.I.) and the Center of Cooperation for Development of the Universidad Politécnica de Valencia, Spain. We, also, appreciate the effort of Prof. Dr. Maher Khalil supporting the project.
dc.language Inglés es_ES
dc.publisher World Rabbit Science. ICTA. UPV es_ES
dc.relation.ispartof World Rabbit Science
dc.rights Reserva de todos los derechos es_ES
dc.subject Rabbits es_ES
dc.subject Heterosis es_ES
dc.subject Litter traits es_ES
dc.subject Milk composition es_ES
dc.title Some factors affecting production and milk composition characters in a crossbreeding experiment involving Gabali and V- line rabbits in Egypt es_ES
dc.type Artículo es_ES
dc.date.updated 2011-02-08T11:13:32Z
dc.identifier.doi 10.4995/wrs.2007.594
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Iraqi, M.; Shenana, M.; Baselga, M. (2007). Some factors affecting production and milk composition characters in a crossbreeding experiment involving Gabali and V- line rabbits in Egypt. World Rabbit Science. 15(3). https://doi.org/10.4995/wrs.2007.594 es_ES
dc.description.accrualMethod SWORD es_ES
dc.relation.publisherversion https://doi.org/10.4995/wrs.2007.594
dc.description.volume 15
dc.description.issue 3
dc.identifier.eissn 1989-8886 es_ES
dc.contributor.funder Agencia Española de Cooperación Internacional para el Desarrollo
dc.contributor.funder Universitat Politècnica de València


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