Advanced SearchSearch Tips
Influence of Varying Levels of Dietary Undegraded Intake Protein Intake on Nutrient Intake, Body Weight Change and Reproductive Parameters in Postpartum Awassi Ewes
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Influence of Varying Levels of Dietary Undegraded Intake Protein Intake on Nutrient Intake, Body Weight Change and Reproductive Parameters in Postpartum Awassi Ewes
Haddad, S.G.; Kridli, R.T.; Al-Wadi, D.M.;
  PDF(new window)
The objective of this study was to evaluate the effect of dietary undegradable protein (UP) level on body weight change, nutrient intake, milk production and postpartum reproductive performance of Awassi ewes. Twenty-seven multiparous Awassi ewes (initial body weight = 53.31.6 kg) were randomly assigned to three dietary treatments (9 ewes/treatment) for 62 days using a completely randomized design. Experimental diets were isonitrogenous (15.5% CP), isocaloric, and were formulated to contain 17.9 (LUP), 27.1 (MUP), and 34.0% (HUP) of the dietary CP as UP. On day 103 (day 0 = parturition) ewes were housed in individual pens for 5 weeks. Feed offered and refused was recorded daily. At the end of this period, animals were removed from their pens and combined into 3 separate groups (LUP, MUP and HUP). One fertile, harnessed ram was allowed with each group for 34 days. Rams were rotated every 2 days among the three groups. Each group was offered the corresponding experimental diet. Organic matter, CP, UP and metabolizable energy intakes were higher (p<0.05) for ewes fed the HUP diet compared with ewes fed the LUP and MUP diets. Ewes fed the HUP diet gained more (p<0.05) weight compared with ewes fed the MUP diet (7.3 vs. 2.1 kg), while ewes fed the LUP diet lost an average of 2.1 kg. Pregnancy rate of ewes fed the HUP diet was 100%, compared with 66 and 33% for ewes fed the MUP and LUP diets, respectively. Lambing rate was greater (p<0.05) for ewes fed HUP (8/9) diet compared with ewes fed the MUP (4/9) and LUP (3/9) diets. These results indicate that Awassi ewes receiving adequate dietary UP level consume more feed and are capable of returning to estrus shortly after parturition and are capable of producing two lamb crops per year.
Bypass Protein;Awassi;Sheep;Reproduction;Undegradable Protein;
 Cited by
Influence of Varying Ruminally Degradable to Undegradable Protein Ratio on Nutrient Intake, Milk Yield, Nitrogen Balance, Conception Rate and Days Open in Early Lactating Nili-Ravi Buffaloes (Bubalus bubalis),;;;;

아세아태평양축산학회지, 2008. vol.21. 9, pp.1303-1311 crossref(new window)
Reproductive performance of seasonal ewes and does fed dry fat during their postpartum period, Livestock Science, 2008, 115, 1, 34  crossref(new windwow)
Ruminal dynamics of ad libitum feeding in buffalo bulls receiving different level of rumen degradable protein, Livestock Science, 2011, 135, 1, 98  crossref(new windwow)
Effects of formaldehyde treated mustard cake and molasses supplementation on nutrient utilization, microbial protein supply and feed efficiency in growing kids, Animal Feed Science and Technology, 2008, 142, 3-4, 220  crossref(new windwow)
Al-Haboby, A. H., A. D. Saman and T. A. Abdul-kareem. 1999. Influence of protein supplementation on reproduction traits of Awassi sheep grazing cereal stubble. Small Rumin. Res. 34:33.

AOAC. 1990. Official Methods of Analysis Association of Official Analytical Chemists. 15th Ed. Arlington, VA.

Bishonga, C., J. J. Robinson, T. G. McEvoy, R. P. Aiten, P. A. Findly and I. Robertson. 1994. The effects of excess rumen degradable protein in ewes on ovulation rate, fertilization and embryo survival in vivo and during in vitro culture. Anim. Prod. 58:447-455.

Bucholtz, D. C., N. M. Vidwans, C. G. Herbosa and K. K. Schillo. 1996. Metabolic interfaces between growth and reproduction. V. pulsitale luteinizing hormone secretion is dependent on glucose availability. Endocrinology 137:601.

Butler, W. R., J. J. Calaman and S. W. Beam. 1996. Plasma and milk urea in relation to pregnancy rate in lactating dairy cattle. J. Anim. Sci. 74:858-865.

Canfield, R. W. and W. R. Butler. 1989. Negative energy balance suppression of energy pulses in lactating dairy cows dose not appear to operate through endogenous opioid peptides. J. Anim. Sci. 67 (suppl. 1):368 (Abstr).

Canfield, R. W., C. J. Sniffen and W. R. Butler. 1990. Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci. 73:2343.

Chowdhury, S. A., H. Rexroth, C. Kijora and K. J. Peters. 2002. Lactation performance of German Fawn Goat in relation to feeding level and dietary protein protection. Asian-Aust. J. Anim. Sci. 15(2):222-237.

Dhuyvetter, D. V., M. K. Peterson, R. P. Ansotegui, R. A. Bellows, B. Nisley, R. Brownson and M. W. Tess. 1993. Reproductive efficiency of range beef cows fed different quantities of ruminally undegradable protein before breeding. J. Anim. Sci. 71:2586-2593.

Epstein, H. 1982. Awassi sheep. World Anim. Rev. 44:9-18.

Estienne, M. J., K. K. Schillo, S. M. Hileman, M. A. Green, S. H. Hayes and J. A. Boling. 1990. Effects of free fatty acids on luteinizing hormone and growth hormone secretion in ovariectomized lambs. Endocrinology 126:1934.

Goering, H. K. and P. J. Van Soest. 1970. Forage fiber analyses (apparatus, reagents, procedures and some applications). Agric. Handbook No. 379. ARS, USDA, Washington, DC.

Hadjipanayiotou, M. 2004. Replacement of barley grain for corn in concentrate diets fed to dairy Damascus goats at different frequencies. Small Rum. Res. 51:229-233.

Hamadeh, S. K., E. K. Barbour, M. Abi-Said and K. Daadaa. 1996. Reproductive performance of postpartum Awassi ewes under different lambing regimes. Small Rum. Res. 19(2):149-154.

Harrison, L. M. and R. D. Randel. 1986. Influence of insulin and energy intake on ovulation rate, luteinizing hormone and progesterone in beef heifers. J. Anim. Sci. 63:1228.

Hoaglund, C. M., V. M. Thomas, M. K. Peterson and R. W. Kott. 1992. Effects of supplemental protein source and metabolizable energy intake on nutritional status of pregnant ewes. J. Anim. Sci. 70:273-280.

Kanjanapruthipong, J. and N. Buatong. 2002. Effect of rumen undegradable protein and mineral proteinate on early lactation performance and ovarian functions of dairy cows in the tropics. Asian-Aust. J. Anim. Sci. 15(6):806-811.

Kile, J. P., B. M. Alexander, G. E. Moss, D. M. Hallford and T. M. Nett. 1991. Gonadotropin- releasing hormone overrides the negative effect of reduced dietary energy on gonadotropin synthesis and secretion in ewes. Endocrinology 128:843.

Kridli, R. T., S. G. Haddad and M. M. Muwalla. 2001. The effect of feeding undegradable protein on postpartum reproduction of Awassi ewes. Asian-Aust. J. Anim. Sci. 14:1125.

Landfield, T. D., J. B. Ebling, J. M. Suttie, L. E. Vannerson, V. Padmanabhan, I. Z. Beitinsand and D. L. Foster. 1989. Metabolic interference between growth and reproduction. II. Characterization of changes in messenger ribonucleic acid concentration of gonadotropin subunits, growth hormone and prolactin in nutritionally growth-limited lambs and the different effects of increased nutrition. Endocrinology 125:351.

Miller, D. W., D. Blache, R. Bockhliq, J. D. Curlewis and G. B. Martin. 1998. Central metabolic messengers and the effects of nutrition on gonadotropin secretion in sheep. J. Reprod. Fert. 112:347.

National Research Council. 1985. Nutrient Requirements of Sheep. 6th Ed. National Academy press, Washington, DC.

National Research Council 2000. Nutrient Requirements of Beef Cattle. 7th Ed. (revised) National Academy press, Washington, DC.

Oqla, H. M., R. T. Kridli and S. G. Haddad. 2004. The effect of dietary fat inclusion on nutrient intake and reproductive performance in postpartum awassi ewes. Asian-Aust. J. Anim. Sci. (In press).

Randel, R. D. 1990. Nutrition and postpartum rebreeding in cattle. J. Anim. Sci. 68:853.

Richards, M. W., R. P. Wettemann and H. M. Schoenemann. 1989. Nutritional anestrus in beef cows: body weight change, body condition, luteinizing hormone in serum and ovarian activity. J. Anim. Sci. 67:1520.

Rutter, L. M. and R. D. Randel. 1984. Postpartum nutrient intake and body condition: Effect on pituitary function and onset of estrus in beef cattle. J. Anim. Sci. 58:268.

Said, S. I., R. T. Kridli and M. M. Muwalla. 1999. Estimation of milk yield in suckled Awassi sheep under traditional feeding conditions. J. Appl. Anim. Res. 16:163-168.

SAS. 1991. SAS for windows, Version 6.0, Ed. SAS Institute Inc., Cary, NC.

Senator, E. M., W. R. Butler and P. A. Oltenacu. 1996. Relationship between energy balance and postpartum ovarian activity and fertility in first lactation dairy cows. J. Anim. Sci. 62:17.

Schillo, K. K. 1992. Effects of dietary energy on control of luteinizing hormone secretion in cattle and sheep. J. Anim. Sci. 70:1271.

Sen, K. K., S. Azhar and K. M. J. Menon. 1979. Evidence for the involvement of an energy-dependent process in gonadotropinreleasing hormone-stimulated luteinizing hormone release by rat anterior pituitary. Endocrinology 105:1158-1161.

Wiley, J. S., M. K. Peterson, R. P. Ansotegui and R. A. Bellows. 1991. Production from first-calf heifers fed a maintenance or low level of prepartum nutrition and ruminally undegradable or degradable protein postpartum. J. Anim. Sci. 69:279-4293

Zarkawi, M. 1997. Monitoring the reproductive performance in Awassi ewes using progesterone radioimmunoassay. Small Rumin. Res. 26:291.

Zurek, E., G. R. Foxcroft and J. J. Kennedy. 1995. Metabolic status and interval to first ovulation in postpartum dairy cows. J. Dairy Sci. 78:1909.