<![CDATA[This study examined environmental, farmer, labor, and managerial factors associated with the performance index (PI) of closed-house broiler farms partnered with PT. Karya Semangat Mandiri in North Sumatra. An observational census survey included 66 eligible partner farmers in Batu Bara (21), Simalungun (25), and Karo (20) from August 2025 to March 2026. Each farmer record summarized two to five production cycles. Descriptive statistics and multiple linear regression with ten explanatory variables were used. The mean PI was 446.07, 424.31, and 402.62 in Batu Bara, Simalungun, and Karo, respectively. The regression model explained 49.0% of PI variation (adjusted R2 = 0.398; F = 5.293; P<0.001). Owner involvement was the only statistically significant adjusted predictor (B = 15.039; P = 0.016). Its score averaged 4.41±0.62 on a five-point scale, with an observed range of 3.00–5.00. A one-point higher score was associated with a 15.039-point higher PI, conditional on the other predictors. The findings support prioritizing owner supervision, production-record review, and worker guidance within partnership support. The observational design and environmental multicollinearity limit causal interpretation.]]>
Copyrights © 2026
