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Effect of supplementation by cactus (Opuntia ficus indica f. inermis) cladodes on reproductive response and some blood metabolites of female goat on pre-mating phase

I. BEN SALEM1

S. KHNISSI2

M. REKIK3

A. BEN YOUNES4

N. LASSOUED2

 

Département des Productions Animales, Service de Zootechnie et Economie Agricole, Ecole Nationale de MédecineVétérinaire, 2020 Sidi Thabet, Tunisie

2 Laboratoire des Productions Animales et Fourragères, Institut National de la Recherche Agronomique de Tunis, 2049 Ariana, Tunisie.

3 Centre International des RecherchesAgricolesdans les Zones Arides (ICARDA), Amman 11195, Jordanie.

4 FondationNationale de l’Amélioration de la Race Chevaline, 2020, Sidi Thabet, Tunisie





Abstract – The objective of this study is to investigate the effect of barley substitution by cactus during pre-mating phase on some reproductive parameters and blood metabolites of goats. Forty adult goats of local breed were allocated to two groups based on live their weight. Each goat of both groups received 0.9 kg of barley straw. Goats on concentrate group (CC) received in addition 425g/goats/day of a concentrate (mixture of 80% barley and 20% soybean). Goats in the cactus group (CAC) received 256g of a concentrate (mixture of 68% barley and 32% soybean) and 2600g of cactus pads. Feeding regimes were applied on the average for one sexual cycle before mating and continued until 5 weeks after. Cactus incorporation had no effects on live weight and blood metabolite levels (glucose and total proteins) of the two groups. But goats receiving barley had a higher (p<0.05) plasma concentrations of urea than those receiving cactus pads. Reproductive parameters as estrus distribution, ovulation rate at first estrus (1.26±0.11 vs1.37±0.11 respectively for goats in CC and CAC groups) conception rate at all estrus (75% vs 90% respectively for goats in CC and CAC groups)and litter size for all estrus(1.46±0.13 vs1.27±0.11 respectively for goats in CC and CAC groups) were not significantly affected by the regimes.It is concluded that during autumn, the sexual season, cactus can replace barley on the diet of goats during 8 weeks around the breeding without any negative effects on live weight, metabolites and reproduction outcome.

Keywords: goats, cactus, ovulation rate, calcium, reproductive parameters

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Duration of water deprivation in the warm summer months: Effect on reproductive performance of Barbarine rams

S. KHNISSI1

M. REKIK2

N. LASSOUED1*

 



1 Laboratoire des Productions Animales et Fourragères, INRAT, Ariana, Tunisia, Université de Carthage.

2 International Center for Agricultural Research in the Dry Areas (ICARDA), Amman, Jordan




Abstract – Ten mature Barbarine rams were used to study, during hot season, the limit of the tolerance capacity of breed to water deprivation (one, two and three days) on male reproductive performances. Animals were allocated to two groups of five animals each, control (C) and deprived (D) rams. C rams had free access to water while D rams were deprived for 3 days followed by one day of hydration during 4 weeks of mating period (8 cycles of water deprivation). Semen and sexual behavior parameters were recorded every 1st, 2nd and 3rd day of water deprivation during the trial. This study showed an effect of duration of treatment on sperm volume (P<0.05) and concentration (P<0.01). On the other hand, D rams showed a significant decrease (p<0.01) of sexual behavior parameters on the 3rd day of dehydration (anogenital sniffing, flehmen, penis erection, reaction time and libido score). The present study provides a better understanding of the ability of Barbarine breed to endure more than one day dehydration and the response in term of reproductive performances in rams during the mating season which naturally coincides with the summer hot season.

Keywords: Rams, Water deprivation, Semen, Sexual behavior

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Copyright

This article is published under license to Journal of New Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

CC BY 4.0