The effect of age on the carcass composition, portion yield and proximate composition of two rabbit genetic types in South Africa

M.K. North, P. Nkhabutlane, L.C. Hoffman

Abstract

This study investigated the carcass component yields and meat proximate composition of 2 rabbit genetic types (Californian and hybrid New Zealand Red×Californian), with 5 rabbits per genetic type being slaughtered every 2 wk throughout the study period (9-17 wk) to evaluate the effect of age on these traits. Slaughter weight, reference yield, portion yield (hind leg, foreleg and fore part, as percentage of slaughter weight), meat yield, skin weight and the fat content of the meat (percentage of wet weight) increased significantly with age, while the full gastrointestinal tract, liver, head and feet decreased significantly. This is likely a reflection of the early-maturing nature of bone and viscera and later maturing nature of muscle and fat. These results indicate that delaying slaughter to 13 wk tends to improve yields for valuable carcass components. The Californian had a significantly higher total meat yield at 11 and 17 wk and higher portion meat yields at 9 (hind leg), 11 (hind leg and fore part) and 13 (foreleg) weeks than the hybrid. This was likely due to the later maturation of the hybrid and the influence of the New Zealand Red on carcass quality. It therefore appears that the Californian may be more favourable for meat production, from a carcass and meat quality perspective.

Keywords

rabbit; carcass; meat; Californian; New Zealand

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References

AOAC International. 2002. Official methods of analysis, 17th edition. Association of Official Analytical Chemists Inc., Virginia, USA.

Baruwa I.O. 2014. Profitability and constraints to rabbit production under tropical conditions in Nigeria. J. Livest. Sci., 5: 83-88. Available at:

http://livestockscience.in/wp-content/uploads/rabbit-nigeria-Baruwa.pdf Accessed May 2017.

Blaga B., Burny P. 2014. Rabbit production and rabbit market in Romania: the most frequent breeds, half-breeds and their characterization. Rabbit Gen., 4: 1-6. Available at: http://orbi.ulg.be/bitstream/2268/175128/1/RabbitProduction_BLAGA_BURNY.pdf Accessed May 2017.

Blasco A., Ouhayoun J. 1996. Harmonization of criteria and terminology in rabbit meat research. Revised proposal. World Rabbit Sci., 4: 93-99. http://dx.doi.org/10.4995/wrs.1996.278

Bura M., Pătruică S., Ţigănele D., Şandor T. 2015. Research on the productive performance of young rabbit hybrid bred in a household system (II). SPASB, 48: 128-133. Available at: http://www.spasb.ro/index.php/spasb/article/view/1901/pdf

Accessed May 2017.

Dalle Zotte A. 2002. Perception of rabbit meat quality and major factors influencing the rabbit carcass and meat quality. Livest. Prod. Sci., 75: 11-32.

https://doi.org/10.1016/S0301-6226(01)00308-6

Dalle Zotte A., Szendrő K., Gerencsér Z., Szendrő Z., Cullere M., Odermatt M., Radni I., Matics Z. 2015. Effect of genotype, housing system and hay supplementation on carcass traits and meat quality of growing rabbits. Meat Sci., 110: 126-134. https://doi.org/10.1016/j.meatsci.2015.07.012

Gómez E., Baselga M., Rafel O., Ramon J. 1998. Comparison of carcass characteristics in five strains of meat rabbit selected on different traits. Livest. Prod. Sci., 55: 53-64. https://doi.org/10.1016/S0301-6226(98)00117-1

Hardouin J., Thys E., Joiris V., Fielding D. 2003. Mini-livestock breeding with indigenous species in the tropics. LRRD, 15: 1-6. Available at: http://www.lrrd.cipav.org.co/lrrd15/4/hard154.htm Accessed May 2017.

Hoffman L., Cawthorn D. 2013. Exotic protein sources to meet all needs. Meat Sci., 95: 764-771. https://doi.org/10.1016/j.meatsci.2013.04.027

Hoffman L., Nkhabutlane P., Schutte D.W., Vosloo C. 2004. Factors affecting the purchasing of rabbit meat: A study of ethnic groups in the Western Cape. JFECS, 32: 26-35.

Hoffman L.C., Vosloo C., Nkhabutlane P., Schutte D.W. 2005. Associations with rabbits and rabbit meat of three different ethnic groups in Stellenbosch, South Africa. JFECS, 33: 63-72.

Lebas F., Coudert P., de Rochambeau H., Thébault R. 1997. The rabbit - husbandry, health and production (Revised.). F.A.O., Rome, Italy.

Lebas F., Matheron G. 1982. VIII. Rabbits. Livest. Prod. Sci., 9: 235-250. https://doi.org/10.1016/0301-6226(82)90073-2

Lee C.M., Trevino B., Chaiyawat M. 1996. A simple and rapid solvent extraction method for determining total lipids in fish tissue. J. AOAC Int., 79: 487-492.

Lukefahr S.D, Cheeke P.R. 1991. Rabbit project development strategies in subsistence farming systems. World Anim. Rev., 68. Available at: http://www.fao.org/ag/aGa/agap/FRG/FEEDback/War/u5700b/u5700b0d.htm Accessed May 2017.

Maj D., Bieniek J., Lapa P., Sternstein I. 2009. The effect of crossing New Zealand White with Californian rabbits on growth and slaughter traits. Archiv Tierzucht, 52: 205-211.

Medellin M.F., Lukefahr S.D. 2001. Breed and heterotic effects

on postweaning traits in Altex and New Zealand White

straightbred and crossbred rabbits. J. Anim. Sci., 79: 1173-

https://doi.org/10.2527/2001.7951173x

Nuwanyakpa M., Lukefahr S.D., Gudahl D., Ngoupayou J.D. 1997. The current stage and future prospects of guinea pig production under smallholder conditions in West Africa; 2. Cameroon case. LRRD, 9: 1-11. Available at: http://www.fao.org/ag/aGa/AGAP/FRG/FEEDback/lrrd/lrrd9/5/gp952.htm Accessed May 2017.

Ozimba C.E., Lukefahr S.D. 1991. Evaluation of purebred and crossbred rabbits for carcass merit. J. Anim. Sci., 69: 2371- 2378. https://doi.org/10.2527/1991.6962371x

Pascual M., Pla M., Blasco A. 2008. Effect of selection for growth rate on relative growth in rabbits. J. Anim. Sci., 86: 3409-3417. https://doi.org/10.2527/jas.2008-0976

Pla M., Hernández P., Blasco A. 1996. Carcass composition and meat characteristics of two rabbit breeds of different degrees of maturity. Meat Sci., 44: 85-92. https://doi.org/10.1016/S0309-1740(96)00079-4

Rao D.R., Chen C.P., Sunki G.R., Johnson W.M. 1978. Effect of weaning and slaughter ages on rabbit meat production. II. Carcass quality and composition. J. Anim. Sci., 46: 578-583. https://doi.org/10.2527/jas1978.463578x

SAS. 2011. SAS® 9.3 System Options: Reference, Second Edition. SAS Inst. Inc., Cary NC, USA.

Serem J.K., Wanyoike M.M., Gachuiri C.K., Mailu S.K., Gathumbi P.K., Mwanza R.N., Kiarie N., Borter D.K. 2013. Characterization of rabbit production systems in Kenya. J. Agric. Sci. Appl., 2: 155-159. Available at: https://www.researchgate.net/profile/Jared_Serem/publication/266152130_Characterization_of_Rabbit_Production_Systems_

in_Kenya/links/54291d050cf26120b7b5913c.pdf Accessed May 2017.

Steenekamp K. 2014. Rabbits: The South African all breeds standards of excellence. South African Rabbit Judges Council. Cape Town, South Africa.

Szendrő Z., Radnai I., Biró-Németh E., Romvári R., Milisits G., Kenessey Á. 1998. The effect of live weight on the carcass traits and the chemical composition of meat of pannon white rabbits between 2.2 and 3.5 kgs. World Rabbit Sci., 6: 243-249. http://dx.doi.org/10.4995/wrs.1998.351

Tůmová E., Bízková Z., Skřivanová V., Chodová D., Martinec M., Volek Z. 2014. Comparisons of carcass and meat quality among rabbit breeds of different sizes, and hybrid rabbits. Livest. Sci., 165: 8-14. https://doi.org/10.1016/j.livsci.2014.04.019

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 Universitat Politècnica de València

 

Official journal of the World Rabbit Science Association (WRSA)

 

e-ISSN: 1989-8886     ISSN: 1257-5011   https://doi.org/10.4995/wrs