Investigation on optimal initial live weight and sex effect for fattening in fat-tailed Lori-Bakhtiari sheep in intensiv
Journal Title: Scientific Journal of Animal Science - Year 2014, Vol 3, Issue 9
Abstract
To identification of optimum initial live weight (ILW) and sex effect for fattening of Iranian Lori-Bakhtiari breed, a total of 224 growing lambs were allocated in two separate experiments. The first experiment (n = 144) was conducted to study the optimum initial live weight for more efficient fattening program. The second experiment 80 lambs (40 male and 40 female lambs) was used to investigate the effect of sex of this breed in fattening program in intenstive rearing system. In the first experiment, 144 ram lambs allocated in three different treatments (48 animals per each) with different ILW; T1) 23.2, T2) 27.3 and T3) 32 kg. In the second experiment 80 lambs were assigned in two different treatments (40 male and 40 female lambs as M and F treatments, respectively). Feed intake (FI), average daily gain (ADG) and feed converion ratio (FCR) were determined in both experiments. The first experiment lasted 110 days and the second experiment lasted 100 days. Considering the results for experiment one showed that the best value for FCR was gained when the lambs were fattened at ILW of 23.2 kg and the best ADG also was gained in 27.3 kg ILW. Based on the first experiment, the ILW of about 27 kg could be recommendable for starting the fattening in Iranian Lori-Bakhtiari lambs. Considering the second experiment results show that male lambs had better gain (285 vs. 207 g/d) (P < 0.05) and also lower feed conversion rate (6.31 vs. 6.42) (P < 0.05) in similar age and weight compared to female lambs. This study indicate that male lambs with intitial live weight of 27 kg might be recommendable fattening program in intenstive rearing system.
Authors and Affiliations
M. R. Javanmard| Department of Veterinary and Food Hygiene; University of Scientific-Applied, Arak, IRAN., M. Kazemi-Bonchenari| Department of Animal Science, Faculty of Agriculture and Natural Resources, Arak University, Arak, IRAN., S. Afshar*| Institute of Scientific-Applied Higher Education of Jihad-e-Agriculture- Agricultural Research, Education and Extension Organization, Tehran, IRAN.
Keywords
Related Articles
- EP ID EP699
- DOI 10.14196/sjas.v3i9.1677
- Views 489
- Downloads 20
Potential consequences of climate change and mitigation options in livestock production in Zimbabwe
This is a review paper that looks at the potential consequences of climate change and mitigation options in livestock production in Zimbabwe. The local environmental policy objectives highlights related to climate chan...
Communal farmers’ perceptions on the use of indigenous knowledge in controlling ticks and tick-borne disease (Anaplasmosis) in cattle: a case of Katima rural constituency, Zambezi region Namibia
Communal farmers in most African countries have used both indigenous and modern knowledge to control ticks and tick-borne diseases. The aim of this paper is to report on the communal farmers’ perceptions on the use of in...
Fatty acid profile and lipid oxidation of lamb meat reared in arid area indoors and grazing outdoors in south west of Algeria
The aim of this study is to compare the fatty acid profile and flavor of lamb meats originating from grazing (A) and concentrate (C) diets. Twenty four lambs of Rumbi breed were used. One hundred and five days after rear...
Acacia saligna seed meal as alternative feed ingredient in broiler ration: Effect on productive performance and carcass characteristics
The experiment was conducted to determine the productive performances and carcass characteristics of broilers fed graded raw Acacia saligna seed meal. A total of 132 Cobb500 unsexed day-old broiler chicken were used for...
Influence of baobab fruit in the diet on intake, milk yield and milk composition in Red Sokoto goats
Baobab fruit (Adansonia digitata) is a nutritious but grossly underutilized food resource with great potentials for improving the productivity of milking goats in Nigeria. Twenty four Red Sokoto goats fed diets containin...