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Saidi R.,Blida University | Khelef D.,Ecole Nationale Superieure Veterinaire | Kaidi R.,Blida University
Livestock Research for Rural Development | Year: 2012

Artificial insemination (AI) is considered one aspect of biotechnology in animal reproduction most commonly practiced throughout the world. To evaluate the results of this biotechnology that has been practiced for years in cattle in Algeria, a set criteria of reproduction was analyzed, including: days from calving to calving (DC-C), The delay between calving and first insemination of cows (DC-AI1), days from calving to conception, the rate of conception at first insemination (RCAI1), the percentage of females fertilized after 3 or more AI and index coital. The study was conducted from 2002-2008 in five consecutive years. In light of the results obtained, it appears that: DC-C is 461 ± 16.1 days (d), DC-1 STAI is106 ± 85.4 d, days from calving to conception are185 ± 137 d, the RCAI1 is 41.1% and the percentage of females requiring 3 AI or more is 39.3%. Too bad percentage is added an index coital of 2.47. These poor results of AI are the consequence in part to the lack of control by stakeholders in the livestock breeding management, on other part linked to the mismatch between food intake and physiological state of the female. Source

Miroud K.,University of El-Tarf | Hadef A.,University of Constantine1 | Khelef D.,Ecole Nationale Superieure Veterinaire | Ismail S.,Blida University | Kaidi R.,Blida University
Livestock Research for Rural Development | Year: 2014

The aim of this study was to establish a reproduction balance sheet so as to quantify reproductive performances and particularly the duration of postpartum anoestrus via the follow up of 40 dairy herds located in north-east Algeria. The results obtained showed that the mean calving-1st heat interval, the mean calving-1st insemination interval, the mean 1st insemination-conception interval, the mean conception interval and the mean calving interval were significantly higher than the reference values (71.4 ± 32.6 days vs <50 days; 72.3 ± 24.8 days vs 60-70 days; 69 ± 50.4 daysvs 23-30 days; 148 ± 96.2 days vs 85 days; 430 ± 75 days vs 365 days respectively), that the first insemination conception rate was very low (25%) and that 43.5% of cows were inseminated more than twice. Moreover, the Herd Reproductive Status of all dairy herds involved was too low and sometimes even negative which revealed that fertility and fecundity were greatly affected. A significant difference between the 8 large (≥ 50 dairy cows) and the 32 small (< 50 dairy cows) dairy farms has only concerned the calving-1st heat interval and the conception interval (p < 0.05). Source

Bessas A.,Ecole Nationale Superieure Veterinaire | Bessas A.,University of Laghouat | Leulmi H.,Ecole Nationale Superieure Veterinaire | Leulmi H.,Aix - Marseille University | And 7 more authors.
Comparative Immunology, Microbiology and Infectious Diseases | Year: 2016

In Algeria, only limited information is currently available on the prevalence of emergent canine and feline vector-borne diseases. The aim of the present work was to detect by qPCR vector-associated bacteria in stray dogs and cats and their ectoparasites from Algiers.18/117 (15.38%) dogs and 2/107 (1.87%) cats were positive for at least one vector-borne agent. Coxiella burnetii and Bartonella henselae were identified in 1/117 (0.85%) dog individually. Ehrlichia canis DNA was detected in 17/117 (14.52%) dogs. 1/107 (0.93%) cat was positive to C. burnetii and another 1/107 (0.93%) to B. henselae. DNA of Rickettsia massiliae, Rickettsia conorii and E. canis was detected in Rhipicephalus sanguineus. Cat fleas were infected with Rickettsia felis, B. henselae and Bartonella clarridgeiae. B. vinsonii subsp. berkhoffii was identified in Xenopsylla cheopis collected from dogs. The findings of this study indicate that dogs and cats from Algeria are exposed to multiple tick and flea-borne pathogens. © 2016 Elsevier Ltd. Source

Ghozlane M.K.,Ecole Nationale Superieure Veterinaire | Bouamra M.,Ecole Nationale Superieure Veterinaire | Temim S.,Ecole Nationale Superieure Veterinaire
Livestock Research for Rural Development | Year: 2012

This study has been realized in the ruminant station of technical institute of Baba-Ali, Algiers. On a period of seven months, between December 2010 and June 2011. It focused on the eating behavior of 41 Prim'Holstein dairy cows, two months before calving and during the first five months of lactation, and its impact on the change in body condition score. The nutrient intakes of nine different diets were measured from the estimated amounts of dry matter ingested during our test, and nutritional value of foods calculated using the results of feed analysis. In parallel, the herd status has been appreciated through a monthly assessment of body condition score. The latter was estimated on average to 3.79 ± 0.50 at calving and 60 days after parturition to 3.04 ± 0.45, a loss of 0.75 points over the first two months of lactation. The study of correlations revealed that the impact of the feeding on the body condition score was delayed in time, and it was especially important at calving. Moreover, it appears that the proportion of concentrate in the diet during this period increases the degree of mobilization of body reserves. This work, however, allowed to bring over a report concerning the influence of feeding management in the peri and postpartum on the body condition score variation. Source

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