Document Type : Research Paper

Authors

College of Agriculture Engineering Science, Salahaddin University -Erbil, Iraq

Abstract

This study was carried out on seventy-six local rabbit (white, black and white and brown white coat color) to investigate the effect of some non-genetic factors on body weight traits in local rabbits with the genetic evaluation of local rabbits by estimated BLUP value of marketing weight. The overall mean of marketing weight, dressing % and average daily gain arrived 1476.01 ± 33.10 g/rabbit, 51.32 ± 0.84 % and 17.22 ± 0.69 g/day/rabbit, respectively. The black-white coat color rabbits excelled in most of the studied traits, especially in weight at marketing (1615.88 ± 31.96 g/rabbit), daily weight gain (19.90 ± 0.64 g/rabbit) and carcass weight (820.588 ± 15.813 g/rabbit) over the other colors, while the highest dressing ratio was in the white rabbits (52.83 ± 0.67 % /rabbit). A significant and numerical superiority of male rabbits over female in the traits under study. A significant positive correlation was recorded among most traits under study. The BLUP values for rabbit ranged from -700 to 100 g/rabbit. These result indicated that there are big genetic variations in this population of local rabbit. It indicates that selection can play a major role in improving body weight traits in local rabbit.

Keywords

Main Subjects

[1]       Koike T, Kitajima S, Yu Y, Nishijima K, Zhang J, Ozaki Y, Morimoto M, Watanabe T, Bhakdi S, Asada Y, Chen YE. Human C-reactive protein does not promote atherosclerosis in transgenic rabbits. Circulation. 2009 Nov 24;120(21):2088-94.
[2]       Saleh H, El-Kasas TA, Saeed AM. Fertility enhancement in rabbits using growth hormone agonist (adenosine). Adv. Anim. Vet. Sci. 2019;7(12):1107-12.
[3]       Dalle Zotte A, Szendrő Z. The role of rabbit meat as functional food. Meat science. 2011 Jul 1;88(3):319-31.
[4]       Ologbose FI, Ajayi FO, Agaviezor B. Effect of Breeds, Sex and Age on Interrelationship between Body Weight and Linear Body Measurement in Rabbits. J Fisheries Livest Prod. 2017;5(250):2.
[5]       Szendrő Z, Szendrő K, Dalle Zotte A. Management of reproduction on small, medium and large rabbit farms: A review. Asian-Australasian journal of animal sciences. 2012 May;25(5):738.
[6]       Rehman A, Abbas N, Saba T, Rahman SI, Mehmood Z, Kolivand H. Classification of acute lymphoblastic leukemia using deep learning. Microscopy Research and Technique. 2018 Nov;81(11):1310-7.
[7]       Farg K, Gouda G, Elkelawy H, Tawfeek MI. GENERAL AND SPECIFIC COMBINING ABILITY OF GROWTH PERFORMANCE ATTRIBUTES IN RABBITS. Egyptian Journal of Rabbit Science. 2021 Jul 1;31(2):199-215.
[8]       Diez‐Tascón C, Littlejohn RP, Almeida PA, Crawford AM. Genetic variation within the Merino sheep breed: analysis of closely related populations using microsatellites. Animal Genetics. 2000 Aug;31(4):243-51.
[9]       SAS, Statistical analyses system. SAS/STAT User’s Guide, Version 8. First Ed. – Cary, NC. 2002
[10]   De la Fuente LF, Rosell JM. Body weight and body condition of breeding rabbits in commercial units. Journal of animal science. 2012 Sep 1;90(9):3252-8.
[11]   Korteby MH. Heritability and correlation of the zootechnical performance of the Algerian local rabbit. International Journal of Advanced Research in Biological Sciences. 2016;3:36-41.
[12]   Blasco A, Gómez E. A note on growth curves of rabbit lines selected on growth rate or litter size. Animal Science. 1993 Oct;57(2):332-4.
[13]   Trocino A, Xiccato G, Queaque PI, Sartori A. Effect of transport duration and gender on rabbit carcass and meat quality. World Rabbit Science. 2003;11(1):23-32.
[14]   Ortiz Hernández JA, Lozano R. Effect of breed and sex on rabbit carcass yield and meat quality. World Rabbit Science. 2001;9(2).
[15]   Ezzeroug R, Belabbas R, Argente MJ, Berbar A, Diss S, Boudjella Z, Talaziza D, Boudahdir N, García MD. Genetic correlations for reproductive and growth traits in rabbits. Canadian Journal of Animal Science. 2019 Dec 5;100(2):317-22.
[16]   Cameron ND. Selection indices and prediction of genetic merit in animal breeding. CAB international; 1997.
[17]   Adeolu IA, Ibe SN. Application of Best Linear Unbiased Predictor (BLUP) in Estimating Breeding Value for Rabbit Bucks Raised in Humid Tropics. Nigerian Journal of Animal Science. 2020 Jul 2;22(1):33-41.