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Partial replacement of barley grain and soybean meal by fleabane (Conyza bonariensis) in diets of growing Awassi lambs

Published online by Cambridge University Press:  12 December 2011

J. M. Abo Omar  and
M. Omar
J. M. Abo Omar*
Affiliation:
Faculty of Agriculture, Department of Animal Production, An Najah National University, Nablus, Palestine
M. Omar
Affiliation:
Ministry of Agriculture, Director of Department of Animal Production, Tulkarm Governorate, Tulkarm, Palestine
*
†E-mail: [email protected]
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Abstract

Effects of partial substitution of barley grain and soybean meal with fleabane (FB) Conyza bonariensis on growth performances and body compositions of 24 male local Awassi lambs were studied. All lambs were male with an average BW of 20.3 kg (s.d. = 2.0 kg) at the beginning of the experiment. Animals were randomly divided into four groups of six lambs each. Lambs in each group received individually their cereal–soybean-based total mixed rations with levels of FB: 0, 50, 100 and 150 g/kg dry matter (DM) diet, which replaced similar values of barley and soybean meal. All rations were isonitrogenous and isocaloric. The fattening experiment lasted 9 weeks, after which all lambs were slaughtered. The composition of nutrients in the C. bonariensis were 89.6%, 15.0%, 28.0%, 30.0% and 10% for organic matter, CP, NDF, ADF and lignin, respectively. At the end of the experiment, lambs fed 100 and 150 g FB/kg DM diets gained more weight (P < 0.05) than those fed the control and 50 g FB/kg DM diets. The DM intake was lower in lambs fed the highest level of FB compared with intakes of lambs in other treatments. Diet content of FB had significant effect (P < 0.05) on weights of empty body, carcass, gut and external (hide, head and feet) among all animals. However, FB had no effects on lambs’ thoracic organs (lungs and heart) and liver. Muscle, bone, omental and mesenteric fat, subcutaneous, intermuscular, pelvic and kidney fat weights (g/kg empty BW) were not affected by FB feeding. Carcass fat was decreased (P < 0.05) by the increase of FB. Total body fat was the same in all animals of the experiment.

Keywords

Awassi lambsfleabaneperformancecarcass
Type
Full Paper
Information
animal , Volume 6 , Issue 7 , 28 May 2012 , pp. 1103 - 1107
Copyright
Copyright © The Animal Consortium 2012

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References

Abo Omar, J 2002. Effects of feeding different levels of sesame oil cake on performance and digestibility of Awassi lambs. Small Ruminant Research 46, 187–190.Google Scholar
Association of Official Analytical Chemists (AOAC) 1990. Official methods of analysis. AOAC, Washington, DC, USA.Google Scholar
Atti, N, Rouissi, H, Mahouachi, M 2004. The effect of dietary crude protein level on growth, carcass and meat composition of male goat kids in Tunisia. Small Ruminant Research 54, 89–97.CrossRefGoogle Scholar
Colomer-Rocher, F, Morand-Fehr, P, Kirton, H 1987. Standard methods and procedures for goats carcass evaluation, jointing and tissue separation. Livestock Production Science 17, 149–159.Google Scholar
Fehr, P, Sauvant, D, Delage, J, Dumont, B, Roy, G 1976. Effect of feeding methods and age at slaughter on growth performances and carcass characteristics of entire young male goats. Livestock Production Science 3, 183–194.CrossRefGoogle Scholar
Haddad, SG, Nasr, RE, Muwalla, MM 2001. Optimum dietary crude protein level for finishing Awassi lambs. Small Ruminant Research 39, 41–46.CrossRefGoogle ScholarPubMed
Kamalzadeh, A, Koops, WJ, van Bruchem, J, Tamminga, S, Zwart, D 1998. Feed quality restriction and compensatory growth in growing sheep: development of body organs. Small Ruminant Research 29, 71–82.CrossRefGoogle Scholar
Marinova, P, Banskalieva, V, Alexandrov, S, Tzvetkova, VH, Stanchev, H 2001. Carcass composition and meat quality of kids fed sunflower oil supplemented diet. Small Ruminant Research 42, 217–225.CrossRefGoogle Scholar
Mourad, M, Gbanamou, G, Balde, LB 2001. Carcass characteristics of West African dwarf goats under extensive system. Small Ruminant Research 42, 81–85.Google Scholar
Naser, O 2009. Effects of source and level of protein on general performance of lambs. Master thesis, An Najah National University, Nablus, Palestine.Google Scholar
Nasir, S, Ali, I 1981. The flora of West Pakistan, vol. 140. Pangraphics Press, Islamabad, Pakistan.Google Scholar
National Research Council (NRC) 1985. Nutrient requirements of sheep, 6th edition. National Academy Press, Washington, DC, USA.Google Scholar
Obeidat, BS, Abdullah, AY, Al-Lataifeh, FA 2008. The effect of partial replacement of barley grains by Prosopis juliflora pods on growth performance, nutrient intake, digestibility, and carcass characteristics of Awassi lambs fed finishing diets. Animal Feed Science and Technology 146, 42–54.CrossRefGoogle Scholar
Ortigues, I, Doreau, M 1995. Responses of splanchnic tissues of ruminants to changes in intake: absorption of digestion end products, tissue mass, metabolic activity and implications to whole animal energy metabolism. Annales de Zootechnie 44, 321–346.CrossRefGoogle Scholar
Prud'hon, M 1976. La croissance globale de l'agneau: ses caractéristiques et ses lois. Proceedings of the 2èmes Journées de la Recherche Ovine et Caprine: Croissance, engraissement et qualité des carcasses d'agneaux et de chevreaux, INRA–ITOVIC, 1–2 December 1976, Paris, France, pp. 6–20.Google Scholar
SAS Institute 1988. Statistical analysis system. SAS Institute Inc., Cary, NC, USA.Google Scholar
Stubbendieck, J, Conard, EC 1989. Common legumes of the Great Plains. University of Nebraska Press, Lincoln, NE, USA.Google Scholar
Thonney, ML, Taylor, CS, Murray, JI, McClelland, JH 1987. Breed and sex differences in equally mature sheep and goats. 2. Body components at slaughter. Animal Production 45, 261–276.Google Scholar
Van Soest, PJ, Robertson, JB, Lewis, BA 1991. Methods for dietary fiber, neutral detergent fiber, and non-starch polysaccharides in relation to nutrition. Journal of Dairy Science 74, 473–481.CrossRefGoogle Scholar
Wallace, LR 1948. The growth of lamb before and after birth in relation to the level of nutrition. Journal of Agricultural Sciences 39, 93–103.Google Scholar
Zaza, A 2008. Effects of feeding different levels of by products silage on performance of Awassi lambs. Master thesis, An Najah National University, Nablus, Palestine.Google Scholar