Variations de l’état corporel d’ovins et systèmes d’élevage dans la région de Chlef, Algérie

Aim:The aim of the study was to assess the effect of two levels of wasted date (WD) by replacing commercial concentrate on the reproductive performance of Ouled Djellal (OD) rams.Materials and Methods:Eighteen mature (2-year-old) OD rams were equally allocated to three groups and fed during 11 weeks with one of three different experimental diets, that contained 0% (0 WD), 50% (50 WD), or 75% (75 WD) of WDs in concentrate diet. Live body weight (LBW), body condition scoring (BCS), scrotal circumference (SC), testicular weight (TW), sperm production and quality, plasma testosterone concentration (T), and sexual behavior (reaction time and number of mounts with ejaculation) were regularly recorded from every ram.Results:LBW, SC, and TW changed significantly among diet groups and during the experimental period (p<0.001), the highest averages were recorded in (0 WD) group. LBW, BCS, SC, TW, semen volume, and percentage of the positive hypo-osmotic swelling test were (p<0.001) positively influenced by flushing period. Nevertheless, sperm concentration showed a significant (p<0.001) decrease at day 30, followed by a return to the initial values afterward. There were no differences (p>0.05) between diet groups for plasma testosterone concentration and semen attributes, except that (50 WD) group expressed the lowest overall value of semen concentration. Furthermore, neither time nor diet affected (p>0.05) sperm motility and reproductive behavior parameters.Conclusions:It is possible to introduce WD as unconventional local feeding resources in flushing diet of breeding rams without disturbing their reproductive performance.

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Effect of increasing levels of wasted date palm in concentrate diet on reproductive performance of Ouled Djellal breeding rams during flushing period

Allaoui

Safsaf

Tlidjane

et al. 2018

Vet World

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Variations saisonnières des performances de reproduction des brebis Ouled Djellal dans la région de Chlef, Algérie

Zidane

Taherti

Gadouche

et al. 2021

Rev. Elev. Med. Vet. Pays Trop.

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La reproduction contribue directement à la rentabilité des élevages et les performances associées sont synthétisées dans des indicateurs économiques centraux dans l’analyse des performances globales des systèmes d’élevages. L’activité sexuelle et ainsi les performances reproductives des brebis sont affectées par des facteurs environnementaux, en premier lieu la photopériode. La brebis Ouled Djellal, naturellement davantage désaisonnée que d’autres races ovines, est peu sensible au facteur photopériodique, parvenant ainsi à maintenir des cycles sexuels pendant la majeure partie de l’année et exprimant peu d’anoestrus saisonnier. Les performances reproductives de cette race n’étant que partiellement exploitées, la présente étude a visé à les caractériser dans la région de Chlef, Algérie. Elle a concerné 834 brebis Ouled Djellal réparties dans 20 exploitations localisées dans différentes communes avec 417 brebis pour chaque saison. Les brebis étaient âgées de trois à cinq ans, et soumises à la photopériode et aux températures naturelles. Les paramètres reproductifs analysés à l’automne et au printemps ont été les taux de fertilité, de fécondité, de prolificité, de productivité numérique et de mortalités. A l’exception des mortalités qui ont montré une différence non significative entre l’automne et le printemps, les résultats sur les autres paramètres de performance ont mis en évidence une différence très significative (p < 0,0001) entre les deux saisons. Malgré ces différences entre saisons, dont les origines sont discutées, les performances reproductives analysées ont été globalement encourageantes pour améliorer la rentabilité des élevages de cette race.

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Effect of <i>Acacia albida</i> Leaf Supplementation on Reproductive Parameters and Pre-Weaning Growth of Arabian Lambs

Kodbé¹,

Miegoué²,

Mouchili³

et al. 2023

OJAS

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A trial on Acacia albida leaf supplementation on reproductive parameters and pre-weaning growth of Arabian lambs was conducted from September 2020 to May 2021 at the small ruminant station of the Livestock Research Institute for Development (IRED) in N'Djamena, Chad. Forty-eight (48) Arabian sheep (45 non-pregnant females and 3 males for a sex ratio of 1 ram to 15 ewes) with an average weight of 20.3 ± 1.2 kg and aged approximately 2 years were divided into 3 groups of 15 ewes each. The supplemented group received

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Variations de l’état corporel d’ovins et systèmes d’élevage dans la région de Chlef, Algérie

Cited by 3 publications

References 1 publication

Effect of increasing levels of wasted date palm in concentrate diet on reproductive performance of Ouled Djellal breeding rams during flushing period

Effect of increasing levels of wasted date palm in concentrate diet on reproductive performance of Ouled Djellal breeding rams during flushing period

Variations saisonnières des performances de reproduction des brebis Ouled Djellal dans la région de Chlef, Algérie

Effect of <i>Acacia albida</i> Leaf Supplementation on Reproductive Parameters and Pre-Weaning Growth of Arabian Lambs

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Variations de l’état corporel d’ovins et systèmes d’élevage dans la région de Chlef, Algérie

Cited by 3 publications

References 1 publication

Effect of increasing levels of wasted date palm in concentrate diet on reproductive performance of Ouled Djellal breeding rams during flushing period

Effect of increasing levels of wasted date palm in concentrate diet on reproductive performance of Ouled Djellal breeding rams during flushing period

Variations saisonnières des performances de reproduction des brebis Ouled Djellal dans la région de Chlef, Algérie

Effect of &lt;i&gt;Acacia albida&lt;/i&gt; Leaf Supplementation on Reproductive Parameters and Pre-Weaning Growth of Arabian Lambs

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Effect of <i>Acacia albida</i> Leaf Supplementation on Reproductive Parameters and Pre-Weaning Growth of Arabian Lambs