The aim of this study was to determine the differences ofestrous response, service per conception (S/C), non return rate (NRR),and conceptionrate (CR) between Bali cattle heifersandcowssynchronized using intra-vaginal progesterone hormone. Two groups of Bali cattle, 15 heifers and 15 cows, were used to examine the response differences of estrous synchronization using progesterone hormone on reproductive performance, between different parity. Each group was given progesterone dose of 1 mg/kg body weight. The data observed were estrousbehavior (estrousintensity, onset of estrous, estrous percentage), and value of S/C, NRR, and CR were analyzed by statistical analysis (t-test). The result shows the estrous intensity was significantly different (P<0.05) between the heifers and cows. The average estrousintensity score of the heifer was 2.87±0.35, while the cows was 2.27±0.45. There was significantly different (P <0.05) in onset of estrous in the cows 41.5±5.18 hours, while in the heifers was 50.67±3.5 hours. The estrouspercentage of the heifers and cows was the same, both of them was 100%. There was no significant difference (P>0.05) in S/Cvalue showed by the heifers (1,31±0,45)and the cows (1,50±0,50). The average value of NRR, for heifers and cowswas 86.67% and 80.00%, respectively. The average value of CRfor heifers and cowswas 86.67% and 80.00%, respectively.
<p class="TTPAbstract">This study aims to determine the effect of variations in quenching media with NaCl on the value of hardness, energy value of the impact and the microstructure phase formed from the carburizing pack. The results showed that the highest hardness value was obtained by quenching 25% NaCl with a value of 136.76 N/mm2 and the lowest value was obtained in specimens without raw material treatment with a value of 119.63 N/mm2, it can be concluded that the higher the concentration of salt, the higher the hardness value. The results of the impack test showed the highest value in the Raw Material specimen with a value of 14,234 Joules and the lowest value on the specimen with 25% NaCl quenching with a value of 5,694 Joules, it can be concluded that the untreated specimen has a good ductility value, while for the specimens undergoing the quenching process, experience agitation. Metallographic test results show the phase of martensive formation in the quenching process and ferlite in Raw Material<strong></strong></p>
A descriptive study using 30 female local Lombok ducks age ready to lay was carried out to know the local Lombok egg duck production and its quality raised intensively in Centre Lombok for making a salted egg. The observation was done in three months. Variable observed were eggs production (monthly production, egg weight, egg index), shell quality (texture, thickness, color), and internal egg quality (yolk index, yolk color, yolk and albumen weight ratio, egg spot). Data were analyzed by using simple statistic to get the mean and the deviation standard. The observation results were: monthly egg production in the first three months were 58,15 ± 10,98%; 60,25 ± 10,60%; 50,00 ± 15,73%; average egg weight and its index were 61,42 ± 2,73 gram and 0,74 ± 0,10. The shell surface was smooth and the thickness was 0,40 ± 0,09 mm. The shell color was greenish dark blue. The yolk index was 0,47, the yolk color varied between 10 and 14, the yolk albumen ratio was 1.04, and there was not an egg spot. The quality of the local Lombok egg ducks was good for making a salted egg.
A potential production study of Sasak duck and the non-indigenous ducks (Campbell, mojosari, MA, and alabio ducks) was carried out in Centre Lombok Regency. Research materials were 50 female DODs for each breed. The variables observed were growth rate and feed conversion. The growth rate was measured every week from started from DOD until 10 weeks old. The data obtained were analyzed by using one-way ANOVA Complete Randomized Design. Results of research: body weight gain (BWG) for all breed increased until age between 5-6 weeks after that declined. Sasak and Campbell BWG were the least. The shank length average of all breed increased 253,86% within ten weeks. The shank length gain (SLG) for all breeds decreased steadily from the first week. The relative SLG of Sasak and MA ducks were between labia duck and Campbell ducks. The relative SLG of labor duck was highest and while that of mojosari ducks was the lowest. The average of the shank diameter gain within 10 weeks for all breeds increased 217.43%. There was no shank diameter difference (P 0.05 >) between Sasak ducks and the nation Lombok indigenous ducks. The average of middle finger length (MFL) of all breeds from one to 10 weeks increased 181,90%. The relative MFL gain of Sasak and Campbell ducks were less (P < 0.05) than that of the other three breeds. The feed conversion of Sasak, Campbell ducks, mojosari, MA, and alabio were 3.60; 3.90; 4.04; 4.06, and 3.66 consecutively.
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