Improvement of Fertility Performance of Farahani Ewes Raised on Supplementary Feeding

محورهای موضوعی : Camel

آ. میر‪شمس‪الهی ¹ (Markazi Agricultural and Natural Resources Research and Education Center, Arak, Iran)
ر.ع. عزیزی ² (Markazi Agricultural and Natural Resources Research and Education Center, Arak, Iran)

تاریخ دریافت : 1393/03/22 تاریخ پذیرش : 1393/08/24 تاریخ انتشار : 1394/12/11

کلید واژه: Fertility, Farahani ewes, lamb’s weight, supplementary feeding,

چکیده مقاله :

This study deals with effects of supplementary feeding on fertility performance of Farahani ewes. The study was conducted using three local flocks in Arak city, Iran. Half ewes in each flock (50 ewes from each flock) were used as control group and fed according to traditional method without supplementary feed. The other half per flock was fed on supplementary feed throughout the experiment that included three stages of breeding, late Pregnancy, and lactation. Weight and body condition score was measured in all ewes before supplementary feeding at breeding and at the end of the experiment. Average weight and body condition score at the measuring period were 39.4 ± 1.3 kg and 2.09 ± 0.26 for the control group; and 42.34 ± 1.26 kg and 2.56 ± 0.34 for the experimental group, respectively. The difference between two groups was significant (P<0.01). Implementation of supplementary feeding had significant effect on the birth and weaning weights of lambs. Average birth weight of lambs in control and experimental groups was 3.38 ± 0.14 and 4.09 ± 0.14 kg, respectively. Lambs weights at one, two and three months of ages for the control group were 9.16 ± 1.4, 12.99 ± 2.03 and 22.65 ± 2.3 kg and for the experimental group were 11.23 ± 1.4, 16.55 ± 2.03 and 27.21 ± 2.3 kg, respectively (significant difference (P<0.01)). Pregnancy rates for the control and experimental group were 85.29% and 94.4%, respectively (P<0.01) and lamb mortality rates were 10.34% and 3.48%, respectively (P<0.01). These findings showed that supplementary feeding improved fertility and lambing performance. Moreover, the birth weight and weaning weight of lambs showed significant improvement as well. The overall, increasing of lambing ewes (of about 14 percent) and increase in lamb birth and weaning weights were the obtained economic benefit from this research.

چکیده انگلیسی:

این مطالعه جهت بررسی تأثیر تغذیه تکمیلی بر عملکرد تولید‪مثلی میش‪های توده فراهانی، بر روی سه گله از گله‪های مردمی شهرستان اراک انجام شد. نیمی از میش‪های هر گله به عنوان گروه شاهد در نظر گرفته شده و مطابق روش دامدار تغذیه شدند (50 میش از هر گله). نیم دیگر میش‪های هر گله نیز در هر سه مرحله آزمایشی که به ترتیب شامل فصل آمیزش، یک و نیم ماه آخر دوره آبستنی و دوره شیردهی بود، غذای کمکی مصرف نمودند. وزن و نمره وضعیت بدنی تمام میش‪های هر گله قبل از شروع انجام تغذیه کمکی در فصل قوچ اندازی و سپس در پایان آن اندازه‪گیری شد. میانگین وزن بدن و نمره وضعیت بدنی میش‪های گروه شاهد در پایان مرحله آزمایشی اول به ترتیب 3/1 ± 4/39 کیلوگرم و 26/0 ± 09/2 واحد و در میش‪های گروه دریافت‪کننده غذای کمکی به ترتیب 26 /1 ± 34/42 کیلوگرم و 34/0 ± 56/2 واحد بود که اختلاف معنی‪داری برای صفات مذکور بین میش‪های دو گروه وجود داشت (01/0>P). انجام تغذیه تکمیلی در سه مرحله آزمایشی، اثر معنی‪داری بر وزن تولد تا از شیرگیری بره‪ها داشت. میانگین وزن تولد بره‪ها برای میش‪های گروه شاهد 14/0±38/3 کیلوگرم و برای میش‪های گروه تغذیه کمکی 14/0 ± 09/4 کیلوگرم بود. وزن یک تا سه ماهگی بره‪ها نیز در گروه شاهد به ترتیب 4/1 ± 16/9 ، 03/2 ± 99/12 و 3/2 ± 65/22 کیلوگرم و در گروه تغذیه کمکی به ترتیب 4/1 ± 23/11، 03/2 ± 55/16 و 3/2 ± 21/27 کیلوگرم بود که اختلاف معنی‪داری بین این دو گروه وجود داشت (01/0>P). درصد باروری میش‪های گروه شاهد و گروه تغذیه تکمیلی به ترتیب 29/85 و 44/94 درصد (01/0>P) و میزان تلفات بره برای این دو گروه به ترتیب 34/10 و 48/3 درصد بود (01/0>P). در مجموع نتایج حاصل از این پژوهش نشان می‪دهد که استفاده از غذای کمکی در مراحل فوق الذکر سبب افزایش عملکرد باروری و بره‪زایی میش‪های فراهانی و افزایش وزن تولد و از شیر‪گیری بره‪هایشان می‪گردد. در مجموع افزایش میزان بره‪زایی میش‪ها (در حدود 14 درصد افزایش) و افزایش وزن تولد و از شیر‪گیری بره‪ها، سود اقتصادی حاصل از اجرای این تحقیق بودند.

منابع و مأخذ:

Abdel-MageedI. (2009). Body condition scoring of local Ossimi ewes at mating and its impact on fertility and prolificacy. Egypt J. Sheep. Goat. Sci. 4(1), 37-44.

Al-Haboby A.H., Salman A.D. and Abdul T.A. (1999). Influence of protein supplementation on reproductive traits of Awassi sheep grazing cereal stubble. Small Rumin. Res. 34, 33-40.

Al-Sabbagh T.A., Swanson L.V. and Thompson J. M. (1995). The effect of ewe body condition at lambing on colostral immunoglobulin G concentration and lamb performance. J. Anim. Sci. 73(10), 2860-2864.

Attia N., Thériezb M. and Abdennebic L. (2001). Relationship between ewe body condition at mating and reproductive performance in the fat-tailed Barbarine breed. Anim. Res. 50(2), 135-144.

Brand T.S., Franck F., Durand A. and Coetzee J. (1997). Use of varying combinations of energy and protein sources as supplementary feed for lambing ewes grazing cereal stubble. Australian J. Exp. Agric. 37(1), 1-9.

Chowdhury S.A., Bhuiyan M.S.A. and Faruk S. (2002). Rearing black Bengal goat under semi-intensive management 1. Physiological and reproductive performances. Asian-Australasian J. Anim. Sci. 15(4), 477-484.

El-Hag F.M., Fadlalla B. and Elmadih M.A. (1998). Effect of strategic supplementary feeding on ewe productivity under range conditions in north Kordofan, Sudan. Small Rumin. Res. 30, 67-71.

Esmaeilizadeh A., Miraei Ashtiani S.R. and Akbari Gharaei M. (2003). Effect of ewe body wheight and body condition score in breeding time on reproduction yield and lambing season in kordi sheep in condition of traditional breeding. J. Paj. Saz. 61, 23-31.

Lassoued N., Rekik M. and Ben Salem H. (2009). Influence of supplementary feeding and the ram effect on conception rate of Barbarine ewes during spring mating. Nutr. Forag. Ecol. Sheep. Goats. 85, 405-409.

Maurya V.P., Kumar S., Kumar D., Gulyani R., Joshi A., Naqvi S.M.K. and Singh V.K. (2009). Effect of body condition score on reproductive performance of Chokla ewes. Indian J. Anim. Sci. 79(11), 1136-1138.

Molina A., Gallego L., Torres A. and Vergara H. (1994). Effect of mating season and level of body reserves on fertility and prolificacy of Manchega ewes. Small Rumin. Res. 14(3), 209-217.

Muñoz C., Carson A.F., McCoy M.A., Dawson L.E.R. and Gordon A.W. (2009). Effects of plane of nutrition of ewes in early and mid-pregnancy on performance of the offspring: female reproduction and male carcass characteristics. J. Anim. Sci. 87, 3647-3655.

Nasr R.E., Haddad S.G. and Alkarablieh E.K. (2002). Economic assessment of hormonal and nutritional treatments for improvement of Awassi sheep production in Jordan. Asian-Australasian. J. Anim. Sci. 15(10), 1110-1114.

Rahmani H.R., Khoram A. and Zamiri M.J. (2000). The relation between of ewes blood glucose and lamb body wheight. Pp. 286-287 in Proc. 1^st Cong. Iran Basal Sci. Vet. Shahrekord, Iran.

Russel A.J., Doney F.J.M. and Gunn R.G. (1969). Subjective assessment of fat in live sheep. J. Agric. Sci. Cambridge. 72, 451-454.

SAS Institute. (2011). SAS^®/STAT Software, Release 9.3. SAS Institute, Inc., Cary, NC. USA.

Sejian A., Maurya V.P., Naqvi S.M.K., Kumar D. and Joshi A. (2010). Effect of induced body condition score differences on physiological response, productive and reproductive performance of Malpura ewes kept in a hot, semi-arid environment. J. Anim. Physiol. Nutr. 94, 154-161.

Torell D.T., Hume I.D. and Weir W.C. (1972). Biuret as a nitrogen supplement for flushing range ewes. J. Anim. Sci. 35(3), 606-610.

Vatankhah M. and Salehi S.A. (2010). Genetic and non-genetic factors affecting Lori-Bakhtiari ewe body weight and its relationship with productivity. Small Rumin. Res. 94, 98-102.

Vatankhah M., Talebi M.A. and Zamani F. (2012). Relationship between ewe body condition score (BCS) at mating and reproductive and productive traits in Lori-Bakhtiari sheep. Small Rumin. Res. 106, 105-109.

Wenzhong L., Yuan Z. and Zhongxiao Z. (2005). Adjustment for non-genetic effects on body weight and size in Angora goats. Small Rumin. Res. 59, 25-31.

Widayati D.T., Suharto K., Astuti P. and Junaidi A. (2011). The Effect of body condition score on hormonal and vaginal histological changes during estrus of synchronized Etawah cross bred does. World. Acad. Sci. Engin. Technol. 53, 408-410.

Yaqoob M., Shahzad F., Aslam M., Younas M. and Bilal G. (2009). Production performance of Dera Din Panah goat under desert range conditions in Pakistan. Trop. Anim. Health. Prod. 41, 1413-1419.

Yilmaz M., Altin T., Karaca O., Cemal I., Bardakcioglu H.E., Yilmaz O. and Taskin T. (2011). Effect of body condition score at mating on the reproductive performance of Kivircik sheep under an extensive production system. Trop. Anim. Health. Prod. 43(8), 1555-1560.