EFFECT OF COOLING FAN INSTALLATION ON ARTIFICIAL INSEMINATION SUCCESS RATES IN FILIAL FRIESIAN HOLSTEIN COWS Rayhan Putra Dwi Utomo (a), Habib Asshidiq Syah (a), Aulia Puspita Anugra Yekti (a), Trinil Susilawati (a)
a) Faculty of Animal Science, Universitas Brawijaya, Malang, 65145, Indonesia
Abstract
Artificial Insemination (AI) technology is essential for increasing dairy cattle populations to support Indonesia^s milk demand. Artificial insemination success is affected by environmental factors in the barn, including temperature, humidity, and solar radiation, all of which can induce heat stress. However, the use of fans in barns can reduce heat stress. This study aims to assess how the implementation of cooling fans in barn environments affects artificial insemination success rates in Friesian Holstein crossbred cattle. This research was conducted in collaboration with Koperasi Agro Niaga Jabung across four villages in Malang Regency, East Java, Indonesia. Data collection and statistical analysis were conducted over a 10-month period from January through October 2025. This study utilized a two-treatment experimental design with a total of 152 cows. The control group (n=76) underwent artificial insemination in barns without cooling fans, while the treatment group (n=76) underwent artificial insemination in barns equipped with cooling fans. The parameters observed included Conception Rate, Pregnancy Rate, Service per Conception, and AI Effectivity. The results showed that the average values for the control group (without cooling fans) and treatment group (with cooling fans) were as follows: conception rate, 15.79% and 27.63%, respectively- pregnancy rate, 57.89% and 55.26%, respectively- services per conception, 2.7 and 2.16, respectively- and AI efficiency, 20.47% and 24.85%. The chi-square test revealed statistically significant differences (P<0.01) between observed and expected values for these three variables. However, the treatment group with cooling fans demonstrated superior performance compared to the control group. The paired t-test indicated that cooling fan implementation significantly affected (P<0.05) services per conception, with the treatment group requiring fewer services to achieve pregnancy. It can be concluded that artificial insemination in barns equipped with cooling fans resulted in better outcomes than in barns without fans, as evidenced by improved conception rates, reduced services per conception, and enhanced AI efficiency.
