Effect of trypanosome infection on livestock health and production traits in northern Ivory Coast

Estimates the prevalence, species and intensity of trypanosome infection found in cattle and sheep breeds and age groups, and the effect of these infections on health and production traits in northern Ivory Coas

Effect of endemic diseases including trypanosomiasis on the blood packed cell volume of livestock in northern Ivory Coast

Studies trypanosome infections and other anaemia producing pathogens in cattle and sheep maintained in village herds and flocks at network sites of Boundiali and tengrela in northern Ivory Coas

Disease interactions in cattle and sheep in northern Cote d'Ivoire

Discusses disease interactions in cattle and sheep in northern Cote d'Ivoire. Presents and discusses prevalence of anaemia - producing parasites, prevalence of strongyle egy burdens, PCV infected or uninfected with trypanosomes in the prescence or ascence of internal/blood parasites, PCV during gestation and lactation and weight change during lactation for classes of parasite infection, PCV and daily liveweight change and weaning weight of lambs for classes of parasite infection, and PCV and daily liveweight gain for trypanosome, storngyle egg burden and coccidia classes of young cattle

Effect of tsetse control by means of insecticide impregnated biconical traps on health and productivity of livestock in northern Cote d'Ivoire: Preliminary results

A study on the effect of tsetse control by means of insecticide impregnated biconical traps on health and productivity of livestock in northern Cote d'Ivoire. Presents data on relative density of tsetse

Factors influencing reproductive performance in a range of network situations

The effects of trypanosome infection and of other factors on parturition interval were evaluated using records for parturitions, which occurred between January 1984 and December 1986 at the Network sites of Avetonu, Boundiali and Mushie. For Mushie some intervals, calculated using parturitions occurring in early 1987, were also included. Mean litter sizes of sheep at Avetonou and Boundiali were very similar, 1.15 and 1.18, respectively. In Boundiali but not in Avetonou, lambing interval was affected significantly (p<0.05) by trypanosome infection post-partum. Trypanosome infection pre-partum did not affect lambing interval at either site. Apart from the effect of year-season of parturition in Boundial, other systematic environmental effects were not significant sources of variation affecting lambing interval. The least square means for calving interval are 424 days at Avetonou (the shortest), 515 days at Mushie (the longest) and 488 days at Boundiali (intermediate). At each of the three sites cows with trypanosome infection post-partum had longer calving intervals that unaffected cows, but only reached significance (P<0.05) in Avetonou. At each of the sites there was a trend for shorter calving intervals with higher PCV. The effect reached statistical significance (p<0.01) at Mashie

Factors influencing liveweight in a range of network situations

The health and performance records of cattle and sheep used were collected over a three-year period, 1984-1986, at four network sites. Three of the sites, Avetonou (Togo), Boundiali (Cote d’Ivoire) and Mushie (Zaire) were chosen because of their high mean trypanosome of the live weight performance, and the fourth site, Kolo (Zaire), was chosen to give estimates of the liveweight performance of trypanotolerant cattle at zero trypanosomiasis risk. Trypanosome prevalence significantly depressed the live weight performance of N’Dama cattle at Mushie, but the effects at the other sites, although generally in the same direction as those at Mushie, did not reach statistical significance (p>0.05). At Mushie trypanosome infection of the N’Dama cow during gestation did not affect her parturition weight, but in the infection occurred during the last 3 months pre-partum then the birth weight of her calf was depressed significantly. The results relating PCV & live weight traits showed that a low PCV associated with poor live weight performance and a high PCV with better performance. Result from the Mushie, Kolo and Avetonou showed a positive relationship of mean PCV in the calf pre-weaning with pre-weaning growth and weaning weight. Trypanosome infection in the ewe, as measured by the number of parasitaemic months during gestation and/or lactation, did not depress her subsequent body weight, nor was there any cumulative effect of trypanosome infection pre and post-partum on ewe weight at weaning, nor on ewe weight change during the lactation, Similarly lamb weaning weight and lamb pre-weaning growth were not affected lamb weaning weight and lamb pre-weaning growth were not affected by one or more parasitaemic months in the ewe during lactation

Factors influencing reproductive performance in a range of network situations

Evaluates the effects of trypanosome infection and other factors on parturition interval (1984-1986) at Network sites of Avetonou, Boundiali & Mushie. Presents data on litter size, lambing interval and calving interval

Factors influencing liveweight in a range of network situations

Discusses factors influencing liveweight in a range of trypanotolerance network situations. Analyses liveweight traits, viz, dam liveweights at parturition and weaning, dam liveweight change between parturition and weaning, progeny liveweights at birth and weaning and progeny pre-weaning daily gain

Health and performance of trypanotolerant cattle breeds exposed to quantified trypanosomiasis risk at five sites within the African Trypanotolerant Livestock Network

A study of tsetse populations and the health and performance traits of one or more trypanotolerant cattle breeds (N'Dama, Baoule and race locale) at five sites in West and Central Africa between 1983 and 198