A5091561777- Rabbits: Nutrition, Reproduction, Health
- Animal Nutrition and Physiology
- Moringa oleifera research and applications
- Ruminant Nutrition and Digestive Physiology
- Reproductive Physiology in Livestock
- Sperm and Testicular Function
- Animal Ecology and Behavior Studies
- Bee Products Chemical Analysis
- Evolution and Paleontology Studies
- Reproductive biology and impacts on aquatic species
- Reproductive Biology and Fertility
- Agriculture Sustainability and Environmental Impact
- Plant and animal studies
- Botanical Research and Applications
- Botanical Research and Chemistry
- Genetic and phenotypic traits in livestock
- Wildlife Ecology and Conservation
Higher National Veterinary School
2011-2025
University of Blida
2013-2024
This study aimed to analyze the effect of reducing litter size variability on growth rate, carcass traits, and meat quality in rabbits. Two divergent lines selected by were compared: a line reduce (HO) one increase (HE). All animals fed same commercial diet kept under identical rearing conditions. The HO had lower live weight at weaning compared HE (p ≤ 0.05), but rate was higher than 0.05). Carcass composition similar between lines. No differences pH 45 min 24 h post-mortem found However,...
Lipopolysaccharide (LPS)-induced inflammation impairs sperm function; however, its impact on ejaculated rabbit remains unexplored. This dose-response study aims to determine the LPS concentration that negatively affects motility in vitro, while also providing first identification of TLR4 localization spermatozoa. Additionally, it evaluates malondialdehyde (MDA) levels seminal plasma as an indicator oxidative stress. Sperm was analyzed using computer-assisted analysis (CASA) after incubation...
The objective of this study was to obtain heritability estimates for reproductive (litter size at birth, number born alive, litter weaning) and growth traits (individual weaning weight, individual weight the end fattening period), then determine genetic correlation between them in a synthetic rabbit line. A total 805 females, 3242 parities, 18 472 records were measured from 2006 2017. pentavariate animal model used with traits. Heritability ranged 0.025 0.126 0.033 0.059 These showed large...
Due to their global distribution, invasive history, and unique characteristics, European rabbits are recognizable almost anywhere on our planet. Although they members of a much larger group living extinct mammals [Mammalia, Lagomorpha (rabbits, hares, pikas)], the is often characterized by several well-known genera (e.g., Oryctolagus , Sylvilagus Lepus Ochotona ). This representation does not capture extraordinary diversity behavior form found throughout order. Model organisms commonly used...
The objective of this work was to study the growth performance, slaughter traits, meat quality, and metabolic profile in rabbits local Algerian population a synthetic line.In total, 120 weaned were used (60 per group). Growth traits recorded from weaning (35 days) (91 days). At slaughter, carcass profiles measured.The line showed heavier total weight faster daily gain than (+15% +19%, respectively), better feed conversion (3.92 vs. 4.81 g/g), cold carcass, perirenal fat (+15%). No...
The aim of this study was to analyse the relationships between kit birth weight and litter size with survival from weaning, estimate effects place birth, nest quality, cannibalism, lactation, parity order, season sex. A total 1696 kits 82 females ITLEV2006 synthetic line were used in study. logistic regression performed. Kit directly related probability kit’s increasing by one gram increased likelihood 8% 10% (P<0.001). In decrease as number at increases, showed a negative relationship...
In rabbits, ovulation rate is, together with prenatal survival, one of the main limiting factors for litter size. Both components are affected by several related to females and their environment. Thus, understanding these variation is key in designing diets, optimisation reproductive performance genetic selection. this review, authors summarise size environmental variation. Genetic results selection programmes on also summarised. regard, a negative effect dietary restriction reduced day...
This study examined the effects of extruded linseed and algae Padina pavonica extract on reproductive performance, milk production, gastrointestinal health female rabbits. Thirty-six nulliparous New Zealand White rabbits were randomly assigned to three groups (n = 12) with different diets. The control group (CNT) received a standard diet, while other two modified isoenergetic diets in which part CNT diet ingredients replaced 5% (L5%) plus 0.2% (L5%PP). monitored from artificial insemination...
<p>A higher litter size at birth has been reported in female rabbits from a Synthetic line than those of the Local Algerian population. The aim this work was to analyse whether difference due ovulation rate and/or embryonic survival In total, 24 multiparous and 23 population were used experiment. Litter recorded up first 3 parities. 20% At their 4th gestation, females euthanized 72 h post coitum. had 50% more ova embryos (+4.42 +3.92 embryos, respectively). displayed lower percentage...
Genetic parameters of kit survival traits and birth weight were estimated on ITELV2006 synthetic line aimed at improving using a multiple trait linear threshold model. Data 1696 kits for weaning, as well individual litter size analysed. effects based Gaussian models, respectively, Bayesian approach. The statistical model included, fixed effects, parity, lactation status, season farrowing, nest cannibalism in kit, place kit's the cage gender, adjustment size. Posterior means heritabilities...
<p>The aim of this study was to estimate the limiting litter size components in rabbit females from a Synthetic line (n=32) and Local population (n=34). Ovulation rate, number implanted live embryos were counted by laparoscopy at 12 d after mating. Prolificacy (total newborn, born alive mortality) embryonic, foetal prenatal survival day birth 3<sup>rd</sup> gestation measured. The analysed traits body weight female mating, ovulation implanted, resorbed embryos, survival, as...
Date palm pollen (DPP) has been widely tested in vitro preservation of spermatozoa different farm animals except rabbits. The objective this study was to evaluate the effect various concentrations (20, 40, 80 mg/mL) DPP aqueous extract on epididymal and ejaculated rabbit during incubation at 37 °C 120 min. NaCl Pollen Extender (NPE) TRIS Base (TPE) were respectively used sperm preservation. Sperm motility parameters objectively analysed by a Computer Aided Analyser (CASA). results revealed...
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In the present study, we evaluated effect of various concentrations date palm pollen (DPP) aqueous extract on rabbit sperm during storage at 4°C for 48 h. Semen was collected from old and young bucks using an artificial vagina initially quality. The were diluted in Tris buffer supplemented with (20, 40, 80 mg/mL) DPP extract. extended samples stored Sperm motility motion kinetics assessed after 2, 4, 24 h storage. At each time, aliquot frozen analytical evaluation thiobarbituric acid...
The objective of our work was to study the effect parity does, intra uterine position and vascularization fetuses their number per horn on, available space placentae development in rabbit at two stages (nulliparous primiparous). To this aim, twenty does locally Algerian population were distributed groups 10 each mated slaughtered on 24th day gestation. In group receiving poor blood supply (? 4 vessels), individual weight crown-rump lower (- 24.4 - 12.6% respectively; p < 0.05) compared those...
Background: Comparative features of embryos developed under in vitro and vivo conditions are particularly important designing embryo transfer procedures that fulfil embryo-recipient synchronization requirements. Objective: To determine the degree asynchrony rabbit development between cultured embryos. Methods: A total 55 non-lactating multiparous female rabbits were used. Embryos classified as 16-cells or early morulae at 48 hours post-coitum (hpc). during 30 32 h was compared with 72 hpc....
The objective of this study was to determine the prevalence and identify risk factors Eimeria spp.and Giardia spp.infection in rabbits from local population four localities northern Algeria.Dung samples were collected 16 farms, totalling 111 rabbits, analysed by flotation method.Additional, data regarding farms management practices obtained means a questionnaire used surveys interviews.The results revealed that Eimeriaspp.contamination 68.75% (11/16) for 58.56% (65/111) respectively.The spp....
The preweaning weight of kits has been related to their mortality during the suckling period. Selecting rabbit for individual body in first days life could be interesting; however, better knowledge weight’s heritability period is necessary determine opportune moment selection. A total 1696 growth records from 81 females ITLEV2006 synthetic line were analysed order estimate genetic and non-genetic parameters at birth as well 5, 7, 14, 21, 28, 35 age. estimates (h2) between low (0.11 birth,...