Litter size component traits in two Algerian rabbit lines

Rafik Belabbas, Maria de la Luz García, Hacina AinBaziz, Ali Berbar, Maria José Argente

Abstract

The aim of this study was to estimate the limiting litter size components in rabbit females from a Synthetic line (n=32) and a Local population (n=34). Ovulation rate, number of implanted and live embryos were counted by laparoscopy at 12 d after mating. Prolificacy (total newborn, number born alive and mortality) and embryonic, foetal and prenatal survival at day of birth of the 3rd gestation were measured. The analysed traits were body weight of the female at mating, ovulation rate, implanted, live and resorbed embryos, embryonic, foetal and prenatal survival, as well as total newborn, number born alive and mortality at birth. Synthetic line females had a higher ovulation rate compared to the Local population (11.03±0.23 vs. 8.41±0.23 corpora lutea; P<0.0001). Synthetic line displayed a higher number of implanted embryos (10.00±0.25 vs. 7.85±0.25 embryos; P<0.0001). No difference was found between groups for number of resorbed embryos. Similar embryonic, foetal and prenatal survival rates were reported between the Synthetic line and the Local population. Additionally, total newborn was higher in the Synthetic line than in the Local population (+1.46 kits; P<0.05). A principal components analysis was performed. The first four principal components (PC) explained more than 90% of the total variation in both lines. Total newborn, number born alive and live embryos were the main variables defining the 1st PC. Resorbed embryos and foetal survival were located in the 2nd PC. Ovulation rate and embryonic survival were the predominant variables defining the 3rd PC. The body weight of females was located in the 4th PC. The phenotypic correlation between total newborn and its components were high and positive in both lines, except for ovulation rate and total newborn, where it was moderate in Synthetic line. In conclusion, the females from Synthetic line have a higher total newborn than those from Local population, as a consequence of a higher number of released oocytes and embryos that successfully reach implantation. However, a higher uterine crowding in Synthetic line seems to limit survival of foetuses that reach term of gestation, while ovulation rate is the principal limiting factor of total newborn in Local population.


Keywords

crossbreeding; litter size; ovulation; prenatal survival; rabbits

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References

Adams C.E. 1960. Prenatal mortality in the rabbit Oryctolagus cuniculus. J. Reprod. Fertil., I: 36-44. https://doi.org/10.1530/jrf.0.00100366

Argente M.J., Santacreu M.A., Climent A., Blasco A. 2003. Relationships between uterine and fetal traits in rabbit selected on uterine capacity. J. Anim. Sci., 81: 1265-1273. https://doi.org/10.2527/2003.8151265x

Argente M.J., Santacreu M.A., Climent A., Blasco A. 2006. Influence of available uterine space per fetus on fetal development and prenatal survival in rabbits selected for uterine capacity. Livest. Sci., 102: 83-91. https://doi.org/10.1016/j.livprodsci.2005.11.0222

Argente M.J., Santacreu M.A., Climent A., Blasco A. 2008. Effect of intra uterine crowding on available uterine space per fetus in rabbits. Livest. Sci., 114: 211-219. https://doi.org/10.1016/j.livsci.2007.05.008

Badawy A.Y., Peiró R., Blasco A., Santacreu M.A. 2016. Effect of increased ovulation rate on embryo and fetal survival as a model for selection by ovulation rate in rabbits. World Rabbit Sci., 24: 87-94. https://doi.org/10.4995/wrs.2016.3992

Belabbas R., García M.L., AinBaziz H., Berbar A., Zitouni G., Lafri M., Bouzouan M., Merrouche R., Ismail D., Boumahdi Z., Benali N., Argente M.J. 2016. Ovulation rate and early embryonic survival rate in female rabbits of a synthetic line and a local Algerian population. World Rabbit Sci., 24: 275-282. https://doi.org/10.4995/wrs.2016.5301

Belabbas R., García M.L., AinBaziz H., Benali N., Berbar A., Boumahdi Z., Argente M.J. 2019. Growth performances, carcass traits, meat quality, and blood metabolic parameters in rabbits of local Algerian population and synthetic line. Vet. World, 12: 55-62. https://doi.org/10.14202/vetworld.2019.55-62

Beier H.M., 2000. The discovery of uteroglobin and its significance for reproductive biology and endocrinology. Ann. NY. Acad. Sci., 923: 9-24. https://doi.org/10.1111/j.1749-6632.2000.tb05516.x

Blasco A., Bidanel J.P., Bolet G., Haley C.S., Santacreu M.A., 1993a. The genetics of prenatal survival of pigs and rabbits: Livest. Prod. Sci., 37: 1-21. https://doi.org/10.1016/0301-6226(93)90061-L

Blasco A., Santacreu M.A., Thompson R., Haley C.S. 1993b. Estimates of genetic parameters for ovulation rate, prenatal survival and litter size in rabbits from an elliptical experiment. Livest. Prod. Sci., 34: 163-174. https://doi.org/10.1016/0301-6226(93)90044-I

Bolet G., Zerrouki N., Gacem M., Brun J.M., Lebas F. 2012. Genetic parameters and trends for litter and growth traits in a synthetic line of rabbits created in Algeria. In Proc.: 10th World Rabbit Congress, September 3 - 6, 2012, Sharm El- Sheikh, Egypt, 195-199.

Brun J.M., Baselga M. 2005. Analysis of reproductive performances during the formation of a rabbit synthetic strain. World Rabbit Sci., 13: 239-252. https://doi.org/10.4995/wrs.2005.514

Brun J.M., Theau-Clément M., Esparbié J., Falières J., Saleil G., Larzul C. 2006. Semen production in two rabbit lines divergently selected for 63-d body weight. Theriogenology, 66: 2165-2172. https://doi.org/10.1016/j.theriogenology.2006.07.004

Calle E.W., García M.L., Blasco A., Argente M.J. 2017. Relationship between body condition and energy mobilization in rabbit does. World Rabbit Sci., 25: 37-41. https://doi.org/10.4995/wrs.2017.5674

Cartuche L., Pascual M., Gomez E.A., Blasco A. 2014. Economic Weights in Rabbit Meat Production. World Rabbit Sci., 22: 165-177. https://doi.org/10.4995/wrs.2014.1747

Chen Z.Y., Dziuk P.J. 1993. Influence of initial length of uterus per embryo and gestation stage on prenatal survival, development and sex ratio in the pig. J. Anim. Sci., 71: 1895-1901. https://doi.org/10.2527/1993.7171895x

Ezzeroug R., Belabbas R., Argente M.J., Berbar A., Diss S., Boudjella Z., Talaziza D., Boudahdir N., García M.L. 2020. Genetic correlations for reproductive and growth traits in rabbits. Can. J. Anim. Sci., 100: 317-322. https://doi.org/10.1139/cjas-2019-0049

Fechheimer N.S., Beatty R.A. 1974. Chromosomal abnomalties and sex ratio in rabbit blastocysts. J. Reprod. Fertil., 37: 331-341. https://doi.org/10.1530/jrf.0.0370331

Gacem M., Bolet G. 2005. Création d’une lignée issue du croisement entre une population locale et une souche européenne. In Proc.: 11èmes Journées de le Recherche Cunicole, 29-30 Novembre, 2005, Paris, France, 15-18.

García M.L., Baselga M. 2002. Estimation of genetic response to selection in litter size of rabbits using a cryopreserved control population. Livest. Prod. Sci., 74: 45-53. https://doi.org/10.1016/S0301-6226(01)00280-9

García-Tomás M., Sánchez J., Piles M. 2009. Post-natal sexual development of testis and epididymis in the rabbit: Variability and relationships among macroscopic and microscopic markers. Anim. Reprod. Sci. 110: 347-355. https://doi.org/10.1016/j.anireprosci.2008.01.019

Hafez E.S.E., Tsutsumi Y. 1966. Changes in endometrial vascularity during implantation and pregnancy in the rabbit. Am. J. Anat., 118: 249-282. https://doi.org/10.1002/aja.1001180113

Hulot F., Mariana J.C., Gattiau G. 1985. Effet du génotype, de l’âge et de la saison sur les follicules préovulatoires de la lapine 8 heures après la saillie. Reprod. Nutr. Dev., 25: 17-32. https://doi.org/10.1051/rnd:19850102

Koenig J.L.F., Zimmerman D.R., Eldrige F.E., Kopf J.D. 1986. The effect of superovulation and selection for high ovulation rate on chromosomal abnormalities in swine ova. J. Anim. Sci., 63: 202.

Laborda P., Mocé M.L., Santacreu M.A., Blasco A. 2011. Selection for ovulation rate in rabbits: Genetic parameters, direct response, and correlated response on litter size1. J. Anim. Sci., 89: 2981-2987. https://doi.org/10.2527/jas.2011-3906

Laborda P., Mocé M.L., Blasco A. and Santacreu M.A. 2012. Selection for ovulation rate in rabbits: Genetic parameters and correlated responses on survival rates. J. Anim. Sci., 90: 439-446. https://doi.org/10.2527/jas.2011-4219

Land R. B., Falconer D.S. 1969. Genetic studies of ovulation rate in the mouse. Genet. Res., 13: 25-46. https://doi.org/10.1017/S0016672300002718

Mocé M.L., Santacreu M.A., Climent A., Blasco A. 2004. The effect of divergent selection for uterine capacity on fetal and placental development at term in rabbits: Maternal and embryonic genetic effects. J. Anim. Sci., 82: 1046-1052. https://doi.org/10.2527/2004.8241046x

Mocé M.L., Santacreu M.A., Climent A., Blasco A. 2005. Divergent selection for uterine capacity in rabbits, III. Responses in uterine capacity and its components estimated with a cryopreserved control population. J. Anim. Sci., 83: 2308-2312. https://doi.org/10.2527/2005.83102308x

Mocé M.L., Blasco A., Santacreu M.A. 2010. In vivo development of vitrified rabbit embryos: Effects on prenatal survival and placental development. Theriogenology, 73: 704-710. https://doi.org/10.1016/j.theriogenology.2009.11.010

Muelas R., Cano P., García M.L., Esquifino A., Argente M.J. 2008. Influence of FSH, LH and prolactin on the components of litter size in rabbit does. In Proc.: 9th World Rabbit Congress, 10-13 June, 2008, Verona, Italy, 405-410.

Peiró R., Gallego M., Blasco A., Santacreu M.A. 2014. The effect of unilateral ovariectomy on early embryonic survival and embryo development in rabbits. World Rabbit Sci., 22: 123- 127. https://doi.org/10.4995/wrs.2014.2105

Pope W.F., Xie S., Broermann D.M., Nephew K.P. 1990. Causes and consequences of early embryonic diversity in pigs. J. Reprod. Fertil., 40: 251-260.

Ragab M., Sánchez J.P., Mínguez C., Vicente J.S., Baselga M. 2014. Litter size components in a full diallel cross of four maternal lines of rabbits. J. Anim. Sci., 92: 3231-3236. https://doi.org/10.2527/jas.2013-7286

Rosendo A., Druet T., Gogué J., Bidanel J.P. 2007. Direct responses to six generations of selection for ovulation rate or prenatal survival in Large White pigs. J. Anim. Sci., 85: 356-364. https://doi.org/10.2527/jas.2006-507

Ruíz-Flores A., Johnson R.K. 2001. Direct and correlated responses to two-stage selection for ovulation rate and number of fully formed pigs at birth in swine. J. Anim. Sci., 79: 2286-2297. https://doi.org/10.2527/2001.7992286x

Saacke R.G., Dalton J.C., Nadir S., Nebel R.L., Bame J.H. 2000. Relationship of seminal traits and insemination time to fertilization rate and embryo quality. Anim. Reprod. Sci., 60: 663-677. https://doi.org/10.1016/S0378-4320(00)00137-8

Salvetti P., Guérin P., Theau-Clément M., Hurtaud J., Beckers J.F., Joly T. 2007. Essais d’amélioration de la production d’embryons chez la lapine. In Proc.: 12èmes Journées de la Recherche Cunicole, 27-28 Novembre, 2007, Le Mans, France, 41-44.

Santacreu M.A., Viudes M.P., Blasco A. 1990. Evaluation par coelioscopie des corps jaunes et des embryons. Influence sur la taille de portée chez la lapine. Reprod. Nutr. Dev., 30: 583-588. https://doi.org/10.1051/rnd:19900503

Santacreu M.A., Gou P., Blasco A. 1992. Relationships between ovulation rate, embryo survival and litter size in rabbits. Anim. Sci., 55: 271-276. https://doi.org/10.1017/S0003356100037557

Santacreu M.A., Mocé M.L., Climent A., Blasco A. 2005. Divergent selection for uterine capacity in rabbits. II. Correlated response on litter size and its components estimated with a cryopreserved control population. J. Anim. Sci., 83: 2303-2307. https://doi.org/10.2527/2005.83102303x

SAS Institute, 2019. SAS Institute Inc., SAS 9.4 Help and Documentation, Cary, NC: SAS Institute Inc., 2019.

Sid S., Benyoucef M.T., Mefti-Korteby H., Boudjenah H. 2018. Performances de reproduction des lapines de souche synthétique et de population blanche en Algérie. Livest. Res. Rural. Dev., 30:7. http://www.lrrd.org/lrrd30/7/sid30120.html

Torrès S., Hulot F., Sevellec C. 1987. Early stages of embryonic development in two rabbit genotypes. Reprod. Nutr. Dev., 27: 715-719. https://doi.org/10.1051/rnd:19870511

Xie S., Broermann D.M., Nephew K.P., Bishop M.D., Pope W.F. 1990. Relationship between oocyte maturation and fertilization on zygotic diversity in swine. J. Anim. Sci., 68: 2027-2033. https://doi.org/10.2527/1990.6872027x

Zerrouki N., Lebas F., Gacem M., Meftah I., Bolet G. 2014. Reproduction performances of a synthetic rabbit line and rabbits of local populations in Algeria, in 2 breeding locations. World Rabbit Sci., 22: 269-278. https://doi.org/10.4995/wrs.2014.2129

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