scholarly journals Evaluation of muscle tissue and liver glycogen of cattle submitted to transport over long distances and subjected to emergency slaughter

2019 ◽  
Vol 71 (3) ◽  
pp. 1067-1075
Author(s):  
L.V. Burns ◽  
A.T. Ramos ◽  
A.P.M. Veiga ◽  
S.E. Moron ◽  
F.M. Cordova ◽  
...  

ABSTRACT The study evaluated the effect of transportation over long distances on cattle muscle tissue of submitted to emergency slaughter in slaughterhouses in northern Tocantins, Brazil. The evaluations consisted in pH, muscle and liver glycogen, muscle histopathology and creatine kinase (CK), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activity. Animals were placed into two groups: Experimental Group (EG), consisting of 19 bovines intended for immediate emergency slaughter, and Control Group (CG), composed of 24 bovines slaughtered in accordance with the normal flow. CK and ALT levels were high in EG. AST did not differ between groups. EG showed higher muscle pH and mean of degenerate fibers, mainly on the intercostal. However, muscle and liver glycogen did not differ between groups. In conclusion, cattle transported over long distances and subjected to immediate emergency slaughter showed markedly stress condition, with changes in biochemical parameters in the muscle tissue, determined by cellular degeneration.

Author(s):  
М.В. ЛУКЬЯНЕНКО ◽  
А.Д. АЧМИЗ ◽  
Р.В. КАЗАРЯН ◽  
А.С. БОРОДИХИН ◽  
Е.В. ВЕЛИКАНОВА

Изучено влияние кормового витаминно-минерального концентрата (КВМК) «Тетра+» на потребительские свойства свинины, в том числе пищевую ценность, технологические и кулинарные свойства. Объект исследования – свинина второй категории от отобранного из поголовья опытной и контрольной групп молодняка свиней массой 100 кг, находившихся на откорме 140 дней. Поросята контрольной группы, начиная от подсосного периода, получали основной рацион (ОР); поросята опытной группы получали КВМК «Тетра+» в количестве 1% в дополнение к ОР. Охлажденное мясо от молодняка свиней обоего пола контрольной и опытной групп оценивали по органолептическим показателям спустя 48 ч после убоя. Определено, что образцы свинины, полученной от опытной группы (ОГ) животных, содержат на 4,1% больше белка по сравнению с образцами свинины от контрольной группы (КГ), при этом доля влаги и жира в образцах мяса от ОГ ниже на 3,08 и 1,10% соответственно. Содержание фосфолипидов в свинине от ОГ на 0,32% выше, чем в свинине от КГ. Установлено, что влагосвязывающая способность мышечной ткани свинины от ОГ на 3,11% выше аналогичного показателя КГ; потери при тепловой обработке свинины от ОГ на 2,17% соответственно ниже. Кулинарно-технологический показатель мышечной ткани реберного отруба свинины от ОГ выше на 0,15 единиц. Суммарная дегустационная оценка образцов вареной свинины опытной и контрольной групп составила 44,3 и 39,7 баллов соответственно. The influence of feed vitamin and mineral concentrate (FV&MC) «Tetra+» on consumer properties of pork, including nutritional value, technological and culinary properties, was studied. The object of research is the second category of pork from the experimental and control groups of young pigs weighing 100 kg that were fattened for 140 days. Control group pigs received the main diet; experimental group received FV&MC «Tetra+» in an amount of 1% in addition to the main diet. Chilled meat from young pigs of both sexes of the control and experimental groups was evaluated by organoleptic parameters 48 hours after slaughter. It was determined that samples of pork obtained from the experimental group of animals contain 4,1% more protein compared to samples of pork from the control group, while the proportion of moisture and fat in meat samples from the experimental group of animals is lower by 3,08 and 1,10%, respectively. The content of phospholipids in pork from the experimental group is 0,32% higher than in pork from the control group. It was found that the moisture-binding capacity of the muscle tissue of pork from the experimental group is 3,11% higher than the same indicator of pork from the control group; losses during heat treatment of pork from the experimental group are 2,17% lower. Culinary and technological index of muscle tissue of the rib cut of pork from the experimental group is higher by 0,15. The total tasting score of cooked pork in the experimental and control groups was 44,3 and 39,7 points, respectively.


Author(s):  
Eka Rejeki Maha ◽  
Berlin Sibarani

This study was aimed at finding out The Effect of Applying POSSE (Predict-Organize-Search-Summarize-Evaluate) Strategy on the Students’ Reading Comprehension. This study used the experimental design. The population of this study was the students of SMA Negeri 2 Medan. There were sixty students taken as the sample of the research. This study was conducted with two randomized groups namely experimental and control group. The experimental group was taught by applying POSSE strategy while control group was taught without applying POSSE strategy. The instrument of collecting the data was multiple choice test which consists of 40 items. To obtain the reliability of the test, the researcher used Kuder-Richardson (KR-21). The calculation shows the reliability was 0.81(high). The data were analyzed by using t-test. The calculation shows that t-observed (4.76) is higher than t-table (2.00) at the level of significance (α) 0.05 with the degree of freedom (df) 58. Therefore, the null hypothesis (Ho) is rejected and alternative hypothesis (Ha) is accepted. It means that there was a significant effect of applying POSSE strategy on the students’ reading comprehension. Keywords: POSSE Strategy, Reading Comprehension.


Author(s):  
Haryato Siregar ◽  
Elia Masa Ginting

This study was aimed at finding out the effect of applying Learning Together Method on the students’ reading comprehension. This study used the experimental design. The population of this study was the students of SMP Negeri 1 Muara. There were sixty students of eighth class as the sample of the research. This study was conducted with two randomized groups namely experimental and control group. The experimental group was taught by applying Learning Together Method while control group was taught without applying Learning Together Method. The instrument of collecting the data was multiple choice test which consists of 20 items. To obtain the reliability of the test, the researcher used Kuder-Richardson (KR-21) formula. The calculation shows the reliability was 0.82(high). The data were analyzed by using t-test. The calculation shows that t-observed (4.9) is higher than t-table (2.00) at the level of significance (α) 0.05 with the degree of freedom (df) 58. Therefore, the null hypothesis (Ho) is rejected and alternative hypothesis (Ha) is accepted. It means that teaching reading comprehension by applying Learning Together Method significantly affect reading comprehension. Keywords: Learning Together Method, Reading Comprehension


Author(s):  
Hasanul Arifin Zul And Masitowarni Siregar

This thesis is focused on the investigation of the effect of applying animal cartoon pictures on students’ achievement in writing narrative text. This study aims to find whether applying animal cartoon pictures significantly affect the students’ writing achievement or not. The data in this study were obtained by administering a written test. The population was the 2015/2016 first year (grade XI) of SMA Swasta Nusantara Lubuk Pakam and 66 students were taken as the sample by using random sampling. The sample was divided into two groups, experimental and control groups. The experimental group was taught by applying animal cartoon pictures while the control group without animal cartoon pictures (x = lecturing). The data were taken the scores from the pre-test and post-test to both experimental and control groups. These data were analyzed by using t-test. The result of computing the t-test obviously showed that t-observed is higher than t-table (5.21 >1,67) with the degree of freedom 64 (df =N-2) at the level significance 0,05 one tail test. It showed that the application of animal cartoon pictures significantly affected the students of SMA Swasta Nusantara Lubuk Pakam achievement in writing narrative text.


Author(s):  
Sri Agus Murniasih And I Wayan Dirgeyasa

This study was conducted to know the effect of applying Peer Review Strategy on the students’ achievement in writing descriptive paragraph. It was conducted by using experimental research method. This research design was conducted pre-test, post test in experimental and control group. The population of this research was the eight (VIII) grade students of SMP IT IQRA’ Medan. The sample of this research was taken by lottery technique. They were in class VIII-1 by experimental group and the class VIII-2 by control group. The experimental group was taught by using Peer Review Strategy while the control group was given no treatment. The instrument used to collect the data was writing essay test. The data were analyzed by using t-test formula. The result showed that the value of t-observed was higher than the value of t-table. (3,55 > 2,05 (a = 0.05)) with the degree of freedom (df) = 28. It means that there was a significant effect of applying Peer Review Strategy on the students’ achievement in writing descriptive paragraph. So, the alternative hypothesis (Ha) was accepted.


Author(s):  
Meryanti Napitupulu And Anni Holila Pulungan

This study was conducted as an attempt to discover the effect of applying Demonstration Method on students’ achievement in speaking skill. It was an experimental research. The subject was students of Grade XII, Vocational High School (Sekolah Menengah Kejuruan: SMK), which consisted of 79 students. The research was divided into two groups: experimental and control groups. The instrument used to collect the data was speaking test. To obtain the reliability of the test, the writer applied Kuder Richardson 21 formula. The result of the reliability was 0.7, and it was found that the test was reliable. The data were analyzed by using t-test formula. The analysis showed that the scores of the students in the experimental group were significantly higher than the scores of the students in the control group at the level of significant m = 0.05 with the degree of freedom (df) 77, t-observed value 8.9 > t-table value 1.99. The findings indicate that using Demonstration Method significantly affected the students’ achievement in speaking skill. So, English teachers are suggested to use Demonstration Method in order to improve students’ achievement in speaking skill.


Author(s):  
Veronika N. And Lince Sihombing

This study focused on finding out the effect of applying RAP (Read, Ask,Paraphrase) Strategy on students’ reading comprehension in reading analyticalexposition text. This study was conducted in experimental design. The populationof this research was the second year of students in SMA Swasta Katolik BudiMurni 2 Medan. There were seventy students of the second year senior highschool students as the sample of the research. This study was conducted with tworandomized groups namely Experimental Group and Control Group. Theexperimental group was taught by applying RAP Strategy, while the control groupwas taught by applying conventional strategy. The instrument of collecting thedata was multiple choice tests which consisted of 25 items. The data wereanalyzed by using t-test formula. The calculation shown that t-observed (5.36)was higher than t-table (1.994) at the level of significance (α) 0.05 with the degreeof freedom (df) 68. It means that there was a significant effect of applying RAPStrategy on students’ reading comprehension in reading analytical exposition text.


Author(s):  
Pranata Royganda Sihaloho And Masitowarni Siregar

The aim of this study is to discover the effect of applying SQ3R method inreading comprehension. Experimental research design is used as the research method.This research took place at SMA Nasrani 2Medan. There were 2 classes chosen as thesample with 30 students in each class. The classes were divided into two groups namelyexperimental and control group. The experimental group was taught by using SQ3Rmethod and the control group was taught by using conventional method. The instrumentused to collect the data was a set of multiple choice tests, which divided as pre test andpost test. The result of the research was analyzed by using t-test formula. The resultshowed that t-test was higher than t-table (4,23>2,00) at the level of significant 0,05with degree of freedom (df) 58. It means that hypothesis alternative (Ha) is acceptedwhich shows that SQ3R method significantly improves the student’s readingcomprehension.


2017 ◽  
Vol 2 (1) ◽  
pp. 42
Author(s):  
Hilma Suryani

The problem of this study is “Does Concept Oriented Reading Instruction (CORI) enhance students’ reading achievement?” The design of this study was quasi-experimental. The sample of this study was taken from the population by using purposive sampling. The experimental group consisted of 39 students while the control group consisted of 35 students. The data were collected by using two instruments; test and questionnaire. The test was given twice to each group in order to see whether or not there was significance difference of pretest and posttest either in experimental or control group and whether or not there was significance difference of experimental and control group in terms of their posttest score. To prove the hypothesis, the data from pretest and posttest of experimental and control group were analyzed by applying paired sample t-test and independent sample t-test. The calculation was run by using SPSS computer program. The result of the study shows there was significance difference of students’ reading achievement between experimental and control group. Besides, the use of CORI as reading strategies was proved as effective reading strategies to enhance students’ reading achievement. Keywords: Concept Oriented Reading Instruction; reading strategy; reading achievement


2019 ◽  
Author(s):  
Nur Tsalits Fahman Mughni

Teaching materials by integrating local culture makes easier for students to understand the subject matter in the learning process. The aims of the study is to measure the effectiveness of teaching materials based on local wisdom of agriculture in Binjai in improving the students problem solving abilities. The research method was a quasi experimental which use non equivalent control group in the pretest posttest design. The sample of study were students of Senior High School grade X in Binjai that consisted of experiment group which used teaching materials based on local wisdom of agriculture in Binjai and control group that used student handbooks. Teaching materials are tested by material experts and technology experts to ensure the quality of teaching materials. Data collection was conducted through test. The results showed that the teaching materials based on local wisdom of agriculture in Binjai effective in improving students problem solving abilities in the experimental group students based on the results of N gain value was 0.67 which has medium criteria. It means teaching materials based on agricultural local wisdom of agriculture in Binjai can be used as one of the teaching materials in learning activities.


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