Supplementing Barbarine ewes every two days around mating does not hamper the reproductive performance in comparison to daily supplementation
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Date
2017-12-11
Date Issued
2017-12-11
Authors
Benkhlil, Zohra
Rekik, Mourad
Lassoued, Narjess
Citation
Zohra Benkhlil, Mourad Rekik, Narjess Lassoued. (11/12/2017). Supplementing Barbarine ewes every two days around mating does not hamper the reproductive performance in comparison to daily supplementation. Revue d'élevage et de médecine vétérinaire des pays tropicaux, 70 (2), pp. 59-63.
Abstract
Seventy Barbarine ewes were divided into two homogeneous groups and
received 1200 g/head/day of hay, supplemented with 400 g/head/day of concentrate, either daily (group C) or every two days (group A). The supplementation lasted three weeks before and three weeks after the mating period. The live
weight, body condition score and blood metabolites were measured at the start
and end of the trial. Estrus detection was performed twice a day and ovarian
activity was monitored by endoscopy 10 days after estrus onset. There was no
significant difference (p > 0.05) between groups C and A for the ovulation rate
(1.78 ± 0.81 vs 1.69 ± 0.64), fertility at first estrus (58.8% vs 68.6%), total fertility (79.4% vs 82.9%), reproductive productiveness at first estrus (1.54 ± 0.89
vs 1.39 ± 0.81), total reproductive productiveness (1.48 ± 0.57 vs 1.39 ± 0.62),
and reproductive losses (43.6% vs 44.1%), respectively. Concentrations of blood
metabolites were similar (p > 0.05) in both groups. These results suggest that
less frequent supplementation during the mating period may be an alternative to
reduce feeding costs without affecting the reproductive performance of prolific
ewes reared in arid environments.
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Rekik, Mourad https://orcid.org/0000-0001-7455-2017