Document Type : Research Paper
Authors
- Mohammad hadi Khabbazan 1
- Abdollah Rezagholivand Lahrud 2
- Saeed mokhtarzadeh 3
- Hojatollah Moosapour 4
1 Ruminant Production Manager.Pars Holding Company,
2 Magsal Co, Ghazavin, Iran
3 Ferdows Pars Agriculture-Livestock Holding Co., Tehran, Iran
4 Pars Holding Co., Tehran, Iran.
Abstract
The objective of this study was to compare growth performance, birth and weaning body weights, and survivability between purebred Balouchi (n=53) and crossbred Balouchi×Romanov (n=114) lambs. In addition, carcass characteristics (n=24) were determined. Balouchi ewes were inseminated with Romanov semen to produce crossbred lambs. All experimental lambs were weaned at 77 d of age and slaughtered at 10 months of age. Birth body weight of the purebred Balouchi lambs was significantly greater than for the crossbred lambs (3.75 vs. 3.56 kg, P<0.01). However, weaning body weight and average daily gain from birth until weaning and slaughter were greater (P<0.05) for the crossbred lambs than for the purebred lambs. Slaughter body weight at 10-month age were not different brtween the tow groups (P=0.08). Litter size was also increased by crossbreeding and using hormone (1.13 vs. 1.00), but lamb survivability was not different between the two groups. The fat yield decreased with crossbreeding. Crossbreeding increased (P<0.05) the weights of testis, liver, heart, and lung. It is concluded that crossbreeding Balouchi ewes with Romanov semen resulted in improved litter size, weaning and slaughter body weights, average daily gains from birth until weaning and slaughter, and carcass characteristics without affecting lamb survivability. Therefore, crossbreeding can be a profitable strategy to increase lamb (meat) production in Balouchi sheep.
Keywords
- Abbasi MNJ, Vaez Torshizi A & Osfooni R (2007) Study of breeding strategies for baluchi sheep. Pajouhesh & Sazandegi, 76: 138-43.
- Gholizadeh M & Ghafouri-Kesbi F (2016) Inbreeding depression in growth traits of Baluchi sheep. Small Ruminant Research, 144: 184-90.
- Karami M & Bagheri M (2020) Comparison of feedlot performance and carcass characteristics of Lori-Bakhtiari and Romanov× Lori-Bakhtiari crossbreed lambs.
- Kashan N, Azar GM, Afzalzadeh A & Salehi A (2005) Growth performance and carcass quality of fattening lambs from fat-tailed and tailed sheep breeds. Small Ruminant Research, 60(3): 267-71.
- Khaldari M & Ghiasi H (2018) Effect of crossbreeding on growth, feed efficiency, carcass characteristics and sensory traits of lambs from Lori-Bakhtiari and Romanov breeds. Livestock Science, 214: 18-24.
- Nawaz M, Khan M, Qureshi M & Rasool E (1999) Productive and reproductive performance of Kajli and Lohi ewes. Asian-Australasian Journal of Animal Sciences, 12(1): 61-7.
- Petrović MP, Sretenović L, Ruzić Muslić D, Pacinovski N & Maksimović N (2011) The effect of crossbreeding systems on lamb meat production. Macedonian journal of animal science, 1(1): 57-60.
- Ricordeau G, Thimonier J, Poivey JP, Driancourt MA, Hochereau-de-Reviers M & Tchamitchian L (1990) INRA research on the Romanov sheep breed in France: a review. Livestock Production Science, 24(4): 305-32.
- Safdarian M, Zamiri M, Hashemi M & Noorolahi H (2008) Relationships of fat-tail dimensions with fat-tail weight and carcass characteristics at different slaughter weights of Torki-Ghashghaii sheep. Meat science, 80(3): 686-9.
- Saghi DA, Mobaraki A, Robati Baluch M & Saghi R (2021) Evaluation of growth performance and carcass characteristics in purebred Kurdi and Kurdi× Romanov lambs. Animal Production, 23(3): 425-35.
- Talebi MA & Gholamhosani K (2018) Growth and Feedlot Performance of Lori-Bakhtiari, Romanov× Lori-Bakhtiari and Pakistani× Lori-Bakhtiari Crossbred Lambs. Research On Animal Production (Scientific and Research), 8(17): 201-8.
- Thomas DL (20210) Performance and utilization of Northern European short-tailed breeds of sheep and their crosses in North America: a review. Animal, 4(8): 1283-96.
- Tsegay T, Yoseph M & Mengistu U (2013) Comparative evaluation of growth and carcass traits of indigenous and crossbred (Dorper× Indigenous) Ethiopian Sheep. Small Ruminant Research, 114(2-3): 247-52.
)