尽管Djallonke和Sahelian绵羊由于萨赫勒品种的生长速度和最终体重随着时间的推移而变高,与他们的Djallonke父母相比,几乎没有科学证据表明十字架抵抗疾病的能力。一项涉及700个Djallonke以及Djallonke和Sahelian品种的两个杂交的研究(50%萨赫勒×50%Djallonke,75%萨赫勒×25%Djallonke)进行,并记录了疾病的发病率,这些动物的寄生虫和死亡率。肠炎,反刍动物埃里希菌和orf在25%的Djallonke中比100%和50%的Djallonkes更为普遍。同样,肺炎在50%的Djallonkes中更为普遍,所有年龄组和女性的个体比所有其他基因型,成人和男性,分别。羔羊和雄性的肠炎患病率也高于所有年龄组和雌性的动物,分别。球虫病在所有年龄组的个体和男性中更为普遍,比羔羊和雌性,分别。男性比女性发现更多的脓肿和创伤病例。羔羊中的tape虫和跳蚤侵染水平高于断奶者和成虫。相反,成年人比断奶者和羔羊更多的螨和蜱虫感染。所有其他基因型的死亡率都较高,羔羊和雌性比100%Djallonke,所有其他年龄组和男性,分别。血球病患者的病死率高于taeniasis病例。萨赫勒xDjalloke杂交比纯Djallonke基因型更容易感染传染病,死亡率更高。
Despite cross-breeding of
Djallonke and Sahelian sheep due to the higher growth rate and final body weight of the Sahelian breeds over time, little scientific evidence exists on the ability of the crosses to withstand diseases compared to their Djallonke parents. A study involving 700
Djallonke and two crosses of the
Djallonke and Sahelian breeds (50% Sahel × 50%
Djallonke, 75% Sahel × 25%
Djallonke) was conducted, and documented incidence of diseases, parasites and mortalities in these animals. Enteritis, Ehrlichia ruminantium and orf were more prevalent in 25%
Djallonke than both 100% and 50% Djallonkes. Similarly, pneumonia was more prevalent in 50% Djallonkes, individuals of all age groups and females than all other genotypes, adults and males, respectively. Enteritis prevalence was also higher in lambs and males than animals of all age groups and females, respectively. Coccidiosis was more prevalent in individuals of all age groups and males, than lambs and females, respectively. More abscess and trauma cases were found in males than females. Higher levels of tapeworm and flea infestations were seen in lambs than weaners and adults. Conversely, more mange mite and tick infestations were seen in adults than weaners and lambs. Higher mortality rates were recorded in all other genotypes, lambs and females than in 100%
Djallonke, all other age groups and males, respectively. Higher case fatality rate was recorded in haemoncosis than taeniasis cases. The Sahel x Djalloke crosses are more susceptible to infectious diseases and record higher mortality rates than the pure Djallonke genotypes.