| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
103-247 |
DRI_Challenge |
denotes |
A comprehensive dynamic simulation model was developed to describe a community-based breeding program for the Menz sheep population of Ethiopia. |
| T2 |
248-343 |
DRI_Background |
denotes |
Selection of male and female animals based on their own and maternal performance was simulated. |
| T3 |
344-427 |
DRI_Background |
denotes |
The breeding goal traits were 6-mo weight, preweaning survival, and fertility rate. |
| T4 |
428-515 |
DRI_Approach |
denotes |
The model input data were obtained from the flock book, questionnaires, and references. |
| T5 |
516-619 |
DRI_Background |
denotes |
The simulation model used a mix of deterministic and stochastic procedures to model the complex system. |
| T6 |
620-760 |
DRI_Outcome |
denotes |
In the baseline scenario, the proportion of selected male and female animals varied between 20 and 30% and between 70 and 80%, respectively. |
| T7 |
761-858 |
DRI_Outcome |
denotes |
A reasonable annual genetic gain was predicted for the breeding goal traits at the village level. |
| T8 |
859-993 |
DRI_Background |
denotes |
For 6-mo weight and preweaning survival rate, the annual genetic gain varied from 0.213 to 0.214 kg and 0.255 to 0.256%, respectively. |
| T9 |
994-1060 |
DRI_Background |
denotes |
For fertility rate, an annual genetic gain of 0.063% was obtained. |
| T10 |
1061-1132 |
DRI_Outcome |
denotes |
The predicted rate of inbreeding per year was between 0.094 and 0.116%. |
| T11 |
1133-1227 |
DRI_Background |
denotes |
Furthermore, a scenario analysis was conducted by varying the proportions of selected animals. |
| T12 |
1228-1445 |
DRI_Background |
denotes |
Annual genetic gains of 0.230 kg, 0.277%, and 0.069% were obtained for 6-mo weight, preweaning survival rate, and fertility rate, respectively, when the proportion of selected male and female animals decreased by 10%. |
| T13 |
1446-1602 |
DRI_Outcome |
denotes |
The annual genetic gains decreased to 0.198 kg, 0.236%, and 0.059%, respectively, when the selection proportion of male and female animals increased by 10%. |
| T14 |
1603-1762 |
DRI_Outcome |
denotes |
The lowest rate of inbreeding per year, ranging from 0.065 to 0.079%, was achieved when the selection proportion of selected male and female animals increased. |
| T15 |
1763-1853 |
DRI_Outcome |
denotes |
The model is relevant for the step-by-step evaluation of more than one round of selection. |
| T16 |
1854-1886 |
DRI_Approach |
denotes |
It is flexible and usage driven. |
| T17 |
1887-2024 |
DRI_Challenge |
denotes |
The model is a valuable tool to design different population structures and can be easily expanded to adopt different breeding strategies. |
| T18 |
2025-2128 |
DRI_Challenge |
denotes |
Hence, the system dynamics modeling approach is a potential tool to describe complex breeding programs. |