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Cabbage waste has the potential to be used as an alternative feed for livestock if the feed is processed sustainably. This study aims to analyze the determine the best level of use of rice bran in making cabbage waste silage seen from physical properties, pH and dry matter content of silage. This study used a completely randomized design with 4 treatments and 4 replications. The treatments were A0 (cabbage waste 100%), A1 (cabbage waste 75% + rice bran 25%), A2 (cabbage waste 50% + rice bran 50%), A3 (cabbage waste 25% + rice bran 75%). The parameters measured include pH, odor, color, texture, presence of mushrooms and dry matter content. The results showed that the substitution of various levels of rice bran on cabbage waste had no significant effect (P 0.05) on the pH, color, texture and presence of mushrooms, had a significant effect (P 0.05) increased the aroma value, and had a very significant effect ( P 0.01) increased the dry matter content of the silage. The best treatment in this study is A3 (cabbage waste 25%, rice bran 75%) because it can increase the odor and dry matter content.

This study aims to describe the application of the round table cooperative learning model to increase participation and learning achievement of class XI MIPA students of SMA Negeri 1 Kota Agung, Lahat Regency, South Sumatra. The design of this study used a classroom action research (PTK) model of Kemmis and Mc Taggart and a quasi experiment. The subjects of this study were students of class XI MIPA 1 SMA Negeri 1 Kota Agung in the second semester of the 2020/2021 academic year. The number of students for the PTK class is 30 people, the experimental class is 30 people, and the control class is 30 people. The data collection technique used the observation sheet and the learning result test, while the data analysis technique used the average score and the t-test. The results showed that the application of the round table cooperative learning model can increase participation, learning achievement, and effectively improve student learning outcomes in the subject of English class XI MIPA SMA Negeri 1 Kota Agung. The implication of the results of this study is if teachers want to increase participation. and student achievement in English subjects, a round table cooperative learning model can be used

Yendraliza, Rodiallah M, Zumarni, Elfawati, Hidayati, Kusnadi. 2021. Reproduction performance, morphometric and structure population of Kuntu buffalo (Bubalis bubalis Merr) in Kampar District, Riau, Indonesia. Biodiversitas 22: 3370-3377. Kuntu buffalo is one of the germplasm of Riau Province. This study aimed was to determine reproduction performance, potential output, population dynamics, and morphometrics of Kuntu buffalo in Kampar Kiri, Indonesia. The research was conducted in July-October 2019 with materials used in the study were 2.746 buffalo and 1.117 buffalo breeders. The research method used was a survey. The respondents from five locations were determined using a purposive sampling technique. The age at first mating of buffalo 42 ± 0.7 months, the S/C 2.6 ± 1.5 times, calving interval 15.3 ± 2.3 months and calving rate 55.59%. The reproductive efficiency of Kuntu buffalo 96.22%, a natural increase of 55.59%, the net replacements rates (male and female) were 289.60% and 446.59%, respectively and potential output of 39.24% was obtained. The population dynamics of the Kuntu buffalo from 2014 to 2019 experienced a growth of 48% with prediction of the population in 2023 is 7.277 heads. The average body size of male and female Kuntu buffalo is small. The conclusion of Kuntu buffalo reproduction is still efficient with the availability of substitute livestock exceeding the need of livestock and the natural increase of Kuntu buffalo population is very high.

The purpose of this study was to know the population structure, natural increase, net replacement stock, and output of buffalo, as well as the holding capacity and capacity of breeders in managing the buffalo. The research was conducted in 14 villages based on the largest number of buffalo population. The material of this research was buffalo (1,802 heads) and buffalo breeders with a total of 179 respondents. The parameters measured were population structure, natural increase, net replacement rate (NRR), output, area carrying capacity and livestock ability to raise. Data were analyzed descriptively by displaying the mean and standard deviation. The results showed that the population structure was dominated by female 68.03%, natural increase 34.74%, male NRR 145.10%; female NRR 310.61%, output 16.83%. the carrying capacity of the Kuantan Tengah area was 10,685.67 ST with the ability of 45.58% breeders. Conclusion: Buffalo cattle in Central Kuantan District have high productivity and Central Kuantan District could be used as a source area for buffalo seedlings.

The purpose of this study was to determine reproductive efficiency, population dynamics, natural increase and estimated output of the Kuantan cattle in the Kuansing Regency, Province of Riau. A total of 311 Kuantan cattle and 99 Kuantan cattle farmers were used in this study through a survey study. Respondent samples were taken from seven districts. Data sampling using purposive sampling with survey methods. Data collection was carried out by interviewing farmers and observing and was analyzed descriptively. Parameters measured were reproductive efficiency, natural increase, estimated output and population dynamics of Kuantan cattle. Results showed that the reproductive efficiency of Kuantan cattle was 1.04%, natural increase 5.14%, the balance of male and female 1: 5, the value of male NRR 50% and female NRR 100.56%, total cattle out 18.69% and total incoming cattle 18.69%, output value 48.88% and estimated population dynamics 2.85%. In conclusion, Kuantan cattle reproduction has not been efficient with the natural increase of the Kuantan cattle was very low, and the replacement stock availability for male and female cattle has not been fulfilled. It is recommended not to release Kuantan cattle in the next 5 years to maintain population balance.