No abstract

Background: The development of local Bali cattle in ex-situ areas allow for the formation of new qualitative phenotypic characteristics. The aim of this study is to characterize Bali cattle that have been created in Jambi Province’s ex-situ environment in several of rearing areas. Methods: A research sample of 478 Bali cattle from Muaro Jambi (MJB) district, Sarolangun (SLG) district, Tanjung Jabung Timur (TJT) District, Jambi City (KJB) and PTPN VI were surveyed. The qualitative phenotype characteristic observed were pattern of head color, dominant head color, inner-ear color, forehead color, side-lip color, horn shape, body-color pattern, dominant body color, back-line color, under-belly color, sock color, rump color and tail color. The frequency and percentage of each qualitative characteristic were calculated using the PROC FREQ function of SAS software version 9.0, resulting in a cross-tabulation of the qualitative characteristics observed in Bali cattle at various locations. Then, PROC CORESP performs multiple correspondence analysis (MCA) between the qualitative characteristics of the variables. The resulting plot depicts the graphical relationship between variables. Result: Research results based on sex showed that only white lower lip and black inner ear were characteristic of the head found to be common, while black backline, light-brown underbelly, white rump and black tail hair were common characteristics for the body. Head phenotype based on district showed that white lower lip and white-black inner ear could be found in male Bali cattle while white lower lip and abnormal horn characteristic could be found in females. Body characteristic analysis showed three-color pattern to be common in male Bali cattle while black backline, white feet and white rump were common characteristics found in females. These characteristics can therefore be seen as differentiating characteristics between sex and district of origin of Bali cattle.

Background and Aim: Among several factors, the sperm quality of poultry is affected by the rooster's body size and the availability of antioxidants like vitamin E. This study aimed to determine the effect of dietary vitamin E supplementation on rooster sperm quality through a meta-analysis. Materials and Methods: After verification and evaluation, a total of 19 articles were included in this study. Data, including dietary vitamin E, semen volume, concentration, total sperm cells, pH, motility, viability, percentage of dead and abnormal sperm, vitamin E sperm content, malondialdehyde (MDA) content, and testosterone levels, were tabulated in a database; these were subsequently analyzed using mixed modeling with vitamin E dose as a fixed effect and study identity as a random effect. Results: Dietary supplementation level of vitamin E significantly (p<0.001) affected sperm concentration, significantly affected motility (p<0.001), significantly affected sperm vitamin E (p<0.001), significantly affected viability (p<0.001), and significantly affected chicken sperm fertility (p=0.001). Vitamin E administration also significantly reduced the number of sperm cell deaths (p<0.001); however, increased dietary levels of vitamin E did not affect semen volume (p=0.853), pH (p=0.951), MDA (p=0.542), the percentage of abnormal sperm cells (p=0.343), nor testosterone levels (p=0.063). Conclusion: Dietary vitamin E supplementation is recommended for male chickens since it generally enhances the quality of their sperm.

West Sulawesi Province has oil palm plantation areas that have the potential to be integrated with beef cattle. This study aims to collect data on feed availability from oil palm plantation waste and the carrying capacity of beef cattle development in West Sulawesi Province. The research method used is the desk study method that uses secondary data from Statistics Indonesia in 2022 related to oil palm plantations, palm oil production, and beef cattle populations, as well as research data relevant to this study. The data collected were analyzed descriptively. The results showed that West Sulawesi Province has oil palm plantation areas in 4 districts (Polewali Mandar, Mamuju, Central Mamuju, and Pasangkayu). The availability of dry matter from the plantation and palm oil processing waste is 479,554.04 Tons DM/year with a capacity of 210,330.72 LU/Year and can meet the needs of 317.61% of the beef cattle population from four districts. The index of feed availability from palm oil waste was highest in Pasangkayu Regency, with dry matter production of 11,298.8 tons DM/year. West Sulawesi Province has the potential to support the development of beef cattle with an integrated system of palm oil and cattle.

Indonesia is a tropical country with a hot climate. In tropical nations such as Indonesia, heat stress is a key reason for the reduced productivity of dairy cattle. Heat stress is a combination of internal and external stimuli that affects an animal, raises its body temperature, and causes it to react physiologically. Most Indonesian dairy cattle are Friesian Holstein (FH), imported from European nations with a temperate environment with low temperatures in the range of 5°C–25°C. Indonesia has a tropical climate with a high ambient temperature that can reach 34°C during the day and the local relative humidity varies between 70% and 90%. Temperature and humidity are two microenvironment factors that may impact the production and heat release in FH cattle. More than 98% of the entire dairy cattle population in Indonesia is found on Java Island. On Java Island, there are between 534.22 and 543.55 thousand heads of cattle, while the dairy cattle population outside Java Island is just 6.59 thousand heads of cattle. The milk output climbs by an average of 3.34% per year, or approximately 909.64 thousand tons and the average annual growth in whole milk consumption was 0.19 L/capita. Indonesian cow milk output has been unable to keep pace with the country’s increasing demand. This study aimed to review the strategies to mitigate heat stress in FH dairy cattle in Indonesia. Keywords: dairy cattle, heat stress, Indonesia, tropical country.