Livestock Studies最新文献_第2页

Pandemics, and Ecological Animal Husbandry 流行病和生态畜牧业

Livestock Studies Pub Date : 2022-09-11 DOI: 10.46897/livestockstudies.1173698

Can Karakurt, B. E. Teke, B. Bülbül, K. Alkoyak

引用次数: 1

The Effects of GnRH and hCG Administration on Pregnancy Rate in Postpartum Dairy Cows GnRH和hCG对产后奶牛妊娠率的影响

Livestock Studies Pub Date : 2022-09-09 DOI: 10.46897/livestockstudies.1173020

Emre Karsavuranoğlu, M. K. Sarıbay, E. Koldaş Ürer

引用次数: 0

Development of Sensory Organs and its Effects on Growth in Broiler Chicks 肉鸡感觉器官的发育及其对生长的影响

Livestock Studies Pub Date : 2022-08-15 DOI: 10.46897/livestockstudies.1162123

Seda İkiz, Oktay Kankılıç

{"title":"Development of Sensory Organs and its Effects on Growth in Broiler Chicks","authors":"Seda İkiz, Oktay Kankılıç","doi":"10.46897/livestockstudies.1162123","DOIUrl":"https://doi.org/10.46897/livestockstudies.1162123","url":null,"abstract":"Recently, alterations in poultry farming have been much more than other branches of agriculture. This case also achieves a great deal of success in terms of efficiency. Increasing productivity in broiler production is one of the most important issue and researches are increasing day by day. Both during incubation and after hatching, applications are aimed at increasing productivity, growth and development. In this study, the development of sensory organs in chicks and the effects of the applications through sensory organs are emphasized. Especially in recent years, studies on odor, colour and light have been increasing. In the chick sex posed to some applications during incubation, the effects of these applications after hatching have been observed in most studies. To increase these effects positively, more intensive research should be conducted and positive developments should be recorded in broiler production. Broiler development and growth occurs with feed consumption. The earlier the chicks are fed and the more feed is eaten during growth, the more production occurs at slaughter age. For this reason, the importance of the senses in terms of their effect on the feeding behavior is discussed in this study.","PeriodicalId":402330,"journal":{"name":"Livestock Studies","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114621277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Predictive Ability of Bayesian Regularized Neural Network Using Cholesky Factorization of Genetic Relationship Matrices for Additive and Non-additive Genetic Effects 利用遗传关系矩阵Cholesky分解评价贝叶斯正则化神经网络对加性和非加性遗传效应的预测能力

Livestock Studies Pub Date : 2022-08-09 DOI: 10.46897/livestockstudies.1159627

Harettin Okut, D. Gianola, K. Weigel

{"title":"Evaluation of Predictive Ability of Bayesian Regularized Neural Network Using Cholesky Factorization of Genetic Relationship Matrices for Additive and Non-additive Genetic Effects","authors":"Harettin Okut, D. Gianola, K. Weigel","doi":"10.46897/livestockstudies.1159627","DOIUrl":"https://doi.org/10.46897/livestockstudies.1159627","url":null,"abstract":"This study aimed to explore the effects of additive and non-additive genetic effects on the prediction of complex traits using Bayesian regularized artificial neural network (BRANN). The data sets were simulated for two hypothetical pedigrees with five different fractions of total genetic variance accounted by additive, additive x additive, and additive x additive x additive genetic effects. A feed forward artificial neural network (ANN) with Bayesian regularization (BR) was used to assess the performance of different nonlinear ANNs and compare their predictive ability with those from linear models under different genetic architectures of phenotypic traits. Effective number of parameters and sum of squares error (SSE) in test data sets were used to evaluate the performance of ANNs. Distribution of weights and correlation between observed and predicted values in the test data set were used to evaluate the predictive ability. There were clear and significant improvements in terms of the predictive ability of linear (equivalent Bayesian ridge regression) and nonlinear models when the proportion of additive genetic variance in total genetic variance ( ) increased. On the other hand, nonlinear models outperformed the linear models across different genetic architectures. The weights for the linear models were larger and more variable than for the nonlinear network, and presented leptokurtic distributions, indicating strong shrinkage towards 0. In conclusion, our results showed that: a) inclusion of non-additive effects did not improve the prediction ability compared to purely additive models, b) The predictive ability of BRANN architectures with nonlinear activation function were substantially larger than the linear models for the scenarios considered.","PeriodicalId":402330,"journal":{"name":"Livestock Studies","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126663758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Five-year term evaluation of the project named "Kilis Goat National Breeding Project in Kilis province 基利斯省“基利斯山羊国家养殖项目”项目为期五年的评估

Livestock Studies Pub Date : 2022-07-01 DOI: 10.46897/livestockstudies.1077836

M. Keskin

{"title":"Five-year term evaluation of the project named \"Kilis Goat National Breeding Project in Kilis province","authors":"M. Keskin","doi":"10.46897/livestockstudies.1077836","DOIUrl":"https://doi.org/10.46897/livestockstudies.1077836","url":null,"abstract":"Kilis Goat National Breeding Project has been carried out for 12 years in cooperation with The General Directorate of Agricultural Research and Policies in the Ministry of Agriculture and Forestry, Hatay Mustafa Kemal University and Sheep and Goat Breeders Association of Kilis Province. The aim of the manuscript is to inform about progresses made under the relevant project. In the second five-year period of the project, 43 breeders take part in a total of approximately 6000 female and 300 male animals. Thirty-seven of these herds are base herds and six of them are elite herds. In the study, the effects of gender, maternal age, separation as breeding stock or not, birth types and years on birth and weaning weights were analysed by using the SPSS package program. The effects of herd and age differences on lactation milk yield in elite herds were also analysed by using the SPSS package program. They were determined that birth weights varied between 2.9-3.1 kg and weaning weights between 11.2-12.7 kg for different years. And, milk yield in elite herds increased from 175.6 kg to 346.1 kg from 2016 to 2020. As conclusion, it is recommended that the continuation of this project will be beneficial.","PeriodicalId":402330,"journal":{"name":"Livestock Studies","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130312124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Effect of Early or Late Breeding on Milk Production in High Producing Lactating Dairy Cows 早、晚育种对高产泌乳奶牛产奶量的影响

Livestock Studies Pub Date : 2022-07-01 DOI: 10.46897/livestockstudies.1077787

G. YILMAZBAŞ MECİTOĞLU

{"title":"The Effect of Early or Late Breeding on Milk Production in High Producing Lactating Dairy Cows","authors":"G. YILMAZBAŞ MECİTOĞLU","doi":"10.46897/livestockstudies.1077787","DOIUrl":"https://doi.org/10.46897/livestockstudies.1077787","url":null,"abstract":"The objective of this study was to compare the effect of early or late breeding on milk production in high producing dairy cows. In this aim, the cows with previous average peak milk yield above 45 kg/d (n = 48) were divided into two groups; Group1 (early bred) included the cows (n = 21) were inseminated between 45 to 75 days in milk (DIM) and Group2 (n = 27; late bred) were inseminated between 76 to 124 DIM. The cows that became pregnant at their first insemination following first estrus selected for the study. Milk yield was recorded every 5 days after calving for the first 45 days then continued for every 15 days for every each cow. Average DIM in early and late bred cows at insemination were 66 (min, 45; max, 75) and 99 (min, 76; max, 124), respectively. Average milk yield up to 271 d was similar between groups, however, average milk yield from 227 to 271 d was lower ( P < 0.04) in early bred cows with 26.7 kg/d compare to late bred cows with 30.3 kg/d. Even, there was no relationship between average milk yield up to 271 d, peak milk yield and day of insemination, it may be concluded that milk yield continues with more pronounced stability through the end of","PeriodicalId":402330,"journal":{"name":"Livestock Studies","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131575293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of environmental factors on growth performance of Kilis goat in Gaziantep province 环境因素对加济安泰普省基利斯山羊生长性能的影响

Livestock Studies Pub Date : 2022-07-01 DOI: 10.46897/livestockstudies.1077855

S. Gül, M. Keskin, Ş. Kaya

引用次数: 2

Factors Affecting Consumer Perception of Goat Milk and Dairy Products in Ankara Province 影响安卡拉省消费者对羊奶和乳制品认知的因素

Livestock Studies Pub Date : 2022-05-28 DOI: 10.46897/livestockstudies.1122574

G. Dellal

引用次数: 1

The Effect of Zinc Supplementation on Plasma Melatonin and Kisspeptin Levels in Rams 补锌对公羊血浆褪黑素和Kisspeptin水平的影响

Livestock Studies Pub Date : 2022-05-23 DOI: 10.46897/livestockstudies.1120128

H. Harman, B. Serpek

引用次数: 0

The Effect of Epidural Application of FSH on Superovulatory Response in Eastern Anatolian Red Cow 硬膜外注射促卵泡刺激素对东安纳托利亚红牛超排卵反应的影响

Livestock Studies Pub Date : 2021-12-22 DOI: 10.46897/livestockstudies.610206

M. Satilmis, M. Yılmaz, Ramazan Sevgi, T. Karaşahin, S. Kizil, Alaeddin Okuroğlu, T. Ertem, Zulal TAVLI YILDIRIR

{"title":"The Effect of Epidural Application of FSH on Superovulatory Response in Eastern Anatolian Red Cow","authors":"M. Satilmis, M. Yılmaz, Ramazan Sevgi, T. Karaşahin, S. Kizil, Alaeddin Okuroğlu, T. Ertem, Zulal TAVLI YILDIRIR","doi":"10.46897/livestockstudies.610206","DOIUrl":"https://doi.org/10.46897/livestockstudies.610206","url":null,"abstract":"This study aimed to evaluate the superovulation response in Eastern Anatolian Red (EAR) cows treated with a single epidural injection or traditional administration of follicle stimulating hormone (FSH). Eight cows were randomly divided into two groups, as control (CG) and experiment (EG). Four replications were applied for each animal in the groups. A total of 16 studies were carried out in each group. In this study, 300 mg intramuscular (i.m) FSH injection was applied with decreasing doses twice daily for four days to the cows in the CG. (70:70, 50:50, 20:20, 10:10 mg). On the other hand, 300 mg FSH was administered as 150 mg epidural and 150 mg intramuscular injection to the cows in EG. The number of untransferable embryos and the total CLs were found statistically significant (p<0.05). However, the number of transferable embryos and unfertilized oocyte (UFO) were found statistically insignificant among the groups (p>0.05). According to the obtained data, it was observed that the epidural administration of FSH for superovulation in EAR cows did not provide sufficient follicle and oocyte development. In conclusion, different studies with different superovulation protocols and FSH doses in local breed EAR cows will be needed for further studies.","PeriodicalId":402330,"journal":{"name":"Livestock Studies","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0