Department of Animal Science, Agriculture and Natural Resources Research Center, Shahrekord, Iran
Receive Date: 23 May 2012,
Revise Date: 05 October 2012,
Accept Date: 01 November 2012
In this study 71 head of conceiving ewe and their progeny (91 head) from the flock of Lori-Bakhtiari sheep (360 head), in Sholi Station were randomly selected to determine the relationship between the immunoglobulin (IgG) concentration in the ewe's serum and colostrum, and lamb's serum. Ewe blood sample, colostrum of ewe and blood of the lamb was taken 2 weeks before parturition, 1 to 8 hours after parturition and 36 hours after birth of lamb, respectively. The serum of samples was extracted and then IgG (mg/mL) was measured in samples based on single radial immunodiffusion test and total serum protein (gr/L) based on quantitative zinc sulfate turbidity method. Results showed that the overall mean of IgG were 21.33, 48.48 and 7.86 mg/mL for blood serum of ewe, serum colostrum of ewe and blood serum of the lamb and total serum protein were 71.98, 114.48 and 65.77 g/L, respectively. The effects of age of ewe, type of parturition, gender of lamb, body condition score and body weight of ewe on considered immunity traits were not significant (P>0.05). The correlation coefficients between IgG in serum of blood and serum of colostrum in ewe and serum of blood in lamb were medium to high (0.35 to 0.75) and significant (P<0.05). The regression coefficients of IgG concentration in lamb's serum on values in ewe's serum at 2 weeks before parturition was highly significant (P<0.01) and shows that IgG content in lamb's serum increase by 0.18 units per increasing one unit in IgG content in ewe's serum. Therefore, the level of IgG in lamb's serum could be affected by the IgG concentrations in ewe’s serum and colostrum. Also, the level of IgG in lamb's serum could be enhanced by improving the level of IgG concentration in ewe's serum at two weeks before lambing.
Ahmad R., Khan A., Jalvi M.A. and Hussain I. (2000). The level of immunoglobulins in relation to neonatal lamb mortality in Pak-Karkul sheep. Vet. Arhiv. 70(3), 129-139. Al-Sabbagh T.A., Swanson L.V. and Thampson J.M. (1995). The effect of ewe body condition at lambing on colostral immunoglobulin G concentration and lamb performance. J. Anim. Sci. 73, 2860-2864. Al-Sabbagh T.A. (2009). Colostral immunoglobulin as affected by nutritional status in Border Licester Merino ewes deliver at Kuwait. Global. Vet.3(4), 281-285. Argüello A., Castro N., Alvarez S. and Capote J. (2006). Effects of the number of lactation and litter size on chemical and physical characteristics of goat colostrums. Small Rumin. Res.64, 53-59. Bekele T., Otesile E.B. and Kasali O.B. (1992). Influence of passively acquired colostral immunity on neonatal lamb mortality in Ethiopian highland sheep. Small Rumin. Res. 9, 209-215. Gilbert R.P., Gaskins C.T., Hillers J.K., Parker C.F. and Mc Guire T.C. (1988). Genetic and environmental factors affecting immunoglobulin G1 concentrations in ewe colostrum and lamb serum. J. Anim. Sci. 66, 855-863. Halliday R. (1976). Variations in immunoglobulin concentration in Finnish×Dorset Horn lambs. Res. Vet. Sci. 21, 331-334. Halliday R. (1978). Immunoglobulin concentration in Scottish Black face lambs on a hill farm. Res. Vet. Sci. 24, 264-266. Hashemi M., Zamiri M.J. and Safdarian M. (2008). Effects of nutritional level during late pregnancy on colostral production and blood immunoglobulin levels of Karakul ewes and their lambs. Small Rumin. Res. 75, 204-209. Hodgson J.C., Moon M., Hay L.A. and Quirie M. (1992). Effectiveness substitute colostrum in preventing disease in newborn lambs. Occasi. Public, British Soc. Anim. Prod. 15, 163-165. Hunter A.G., Reneau J.K. and Williams J.B. (1977). Factors affecting IgG concentration in day-old lambs. J. Anim. Sci. 45, 1146-1151. Mancini G., Carbonara A.O. and Heremans J.F. (1965). Immunochemical quantitation of antigens by single radial immunodiffusion. Immunochemistry. 2, 235-254. Mazzone M.M., Holocombe D.W., Ackerman C.J., Balok C.E., Mendoza Reyes A. and Hallford D.M. (1999). Effect of short-term protein supplementation on colostrum characteristics and immunoglobulin G concentrations in colostrum of ewe and lamb serum. Sheep. Goat. Res. J. 15, 64-73. Nikbakht Brujeni G.H.R., Shahi Jani S., Alidadi N., Tabatabaei S., Sharifi H. and Mohri M. (2010). Passive immune transfer in fat-tailed sheep: evaluation with different methods. Small Rumin. Res. 90, 146-149. Nikbakht Brujeni G.H.R., Tabatabaei S., Ashrafi I. and Khormali M. (2008). Antigenic similarities between camel, cattle and sheep immunoglobulin. J. Camel. Prac. Res. 15, 15-19. O’Doherty J.V. and Crosby T.F. (1997). The effect of diet in late pregnancy on colostrums production and immunoglobulin absorption in sheep. Anim. Sci. 64, 87-96. Rudovsky A., Locher L., Zeyner A., Sobiraj A. and Wittek T. (2008). Measurement of immunoglobulin concentration in goat colostrums. Small Rumin. Res.74, 265-269. Russel A.J., Doney F.J.M. and Gunn R.G. (1969). Subjective assessment of fat in live sheep. J. Agric. Sci. Camb. 72, 451-454. SAS Institute. (1996). SAS®/STAT Software, Release 6.11. SAS Institute, Inc., Cary, NC. Thomas V.M., McInerney M.J. and Kott R.W. (1988). Influence of body condition and lasalocid during late gestation on blood metabolites, lamb birth weight and colostrum composition and production in Finn-cross ewes. J. Anim. Sci. 66, 783-791. Vatankhah M. and Talebi M.A. (2009). Genetic and non-genetic factors affecting mortality in Lori-Bakhtiari lambs. Asian- Australas J. Anim. Sci. 22(4), 459-464. Vatankhah M. and SalehiS.A. (2010). Genetic and non genetic factors affecting Lori-Bakhtiari ewe body weight and its relationship with productivity. Small Rumin. Res. 94, 98-102. Weaver D.M., Tyler J.M., VanMetre D.C., Hostetler D.E. and Barrington G.M. (2000). Passive transfer of colostral immunoglobulins in calves. J. Vet. Internal. Med. 14, 569-577.