الملخص
The current study assessed the effect of the pattern of live weight change on the ovarian function of maiden Barbarine ewes at approximately 1 year of age. For this purpose, a total of 171 weaned ewe lambs (mean live weight ± s.d. 34.7±3.07 kg and mean age ± SD 196±10 days at weaning) were selected for the experiment. Adjustment of live weight variation was used. Based on the slope of the curve, animals were grouped into three classes LWCI (n=46), LWCII (n=91) and LWCIII (n=34) with live weight loss being highest in LWCI and lowest in LWCIII. Following laparoscopy at 13 months of age, the proportion of ewe lambs found cycling in LWCIII (85.3%) was higher in comparison to animals in LWCI (43.4%; P<0.001) and tended to be superior to those in LWCII (61.5%; P<0.05). Following synchronisation with progestagen of the females found cycling, levels of plasma IGF-I concentrations between 6 and 42 hrs after removal of sponges were not significantly different between the three classes of live weight, and respectively averaged 94.2, 90.8 and 89.8 µg/l for LWCI, LWCII and LWCIII females. Levels of estradiol were also not significantly different between the three groups (0.73, 0.70 and 0.67 pg/ml for LWCI, LWCII and LWCIII ewe lambs, respectively). It was concluded that, in low input systems of semi-arid and arid Tunisia, mating ewe lambs at the approximate age of 1 year is likely to lead to depressed reproductive performance particularly when the summer live weight-loss is elevated.
الكلمات المفتاحية
بيانات النشر
- المعرّف الرقمي
- 10.24200/jams.vol15iss0pp41-46
- المجلة
- مجلة العلوم الزراعية والبحرية, 15, 41
- الناشر
- جامعة السلطان قابوس
- وصول مفتوح
- وصول مفتوح ذهبي
- الترخيص
- CC BY 4.0
اقتبس هذه المقالة
APA 7
Ben Salem, I., Rekik, M., Ben Hamouda, M., & Lassoued, N. (2010). Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes. Journal of Agricultural and Marine Sciences, 15, 41. https://doi.org/10.24200/jams.vol15iss0pp41-46
MLA 9
Ben Salem, Imène, et al. "Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes." Journal of Agricultural and Marine Sciences, vol. 15, 2010, pp. 41. https://doi.org/10.24200/jams.vol15iss0pp41-46.
شيكاغو (المؤلف–التاريخ)
Ben Salem, Imène, Mourad Rekik, Mohammed Ben Hamouda, and Narjess Lassoued. 2010. "Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes." Journal of Agricultural and Marine Sciences 15: 41. https://doi.org/10.24200/jams.vol15iss0pp41-46.
هارفارد
Ben Salem, I., Rekik, M., Ben Hamouda, M. and Lassoued, N. (2010) 'Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes', Journal of Agricultural and Marine Sciences, 15, pp. 41. doi:10.24200/jams.vol15iss0pp41-46.
فانكوفر
Ben Salem I, Rekik M, Ben Hamouda M, Lassoued N. Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes. Journal of Agricultural and Marine Sciences. 2010;15:41. doi:10.24200/jams.vol15iss0pp41-46
IEEE
I. Ben Salem, M. Rekik, M. Ben Hamouda, and N. Lassoued, "Live Weight Changes and Their Relationship with the Ovarian Status of Maiden Fat-Tailed Barbarine Ewes," Journal of Agricultural and Marine Sciences, vol. 15, pp. 41, 2010, doi: 10.24200/jams.vol15iss0pp41-46.