Estimation of genetic parameters for carcass grading traits, image analysis traits, and monounsaturated fatty acids in Japanese Black cattle from Hyogo Prefecture

2021 ◽  
Vol 92 (1) ◽  
Author(s):  
Namiko Kohama ◽  
Emi Yoshida ◽  
Tatsunori Masaki ◽  
Eiji Iwamoto ◽  
Moriyuki Fukushima ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Image Analysis ◽  
Genetic Parameters ◽  
Monounsaturated Fatty Acids ◽  
Japanese Black Cattle ◽  
Hyogo Prefecture ◽  
Estimation Of Genetic Parameters

scholarly journals Genetic parameters for milk fatty acid composition of Holstein in Korea

2020 ◽  
Vol 33 (10) ◽  
pp. 1573-1578
Author(s):  
Chan Hyuk Park ◽  
Umanthi Ranaraja ◽  
Chang Gwon Dang ◽  
Jong Joo Kim ◽  
Chang Hee Do
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Genetic Parameters ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Monounsaturated Fatty Acids ◽  
Milk Quality ◽  
Milk Fatty Acid ◽  
Early Lactation ◽  
Fat Reserves

Objective: Milk fatty acid (FA) is a main nutritional component that markedly effects human health. Intentional modification of the FA profile has the potential to improve milk quality. This study aimed at the factors affecting elevated FA levels and the estimation of the genetic parameters for milk FAs in the Korean Holstein population.Methods: Total 885,249 repeated test-day milk records including, milk yield, saturated fatty acids (SFA), polyunsaturated fatty acids (PUFA), monounsaturated fatty acids (MUFA), total unsaturated fatty acids (TUFA), fat and protein percentages were analyzed using CombiFoss FT+ system (Foss Analytical A/S, Denmark). Genetic parameters were estimated by the restricted maximum likelihood procedure based on the repeatability model using the Wombat program.Results: The FA profile varies along with the lactation and the energy balance (EB). With the negative EB in early lactation, mobilization of body fat reserves elevates the desirable FA levels. As a result of that, milk quality is increased by means of nutritionally and usability aspects during the early lactation. Moreover, heritability estimates for SFA, MUFA, PUFA, TUFA were 0.33, 0.42, 0.37, 0.41 respectively. According to the parity wise heritability analysis, first parity cows had relatively lower heritability for SFAs (0.19) than later parities (0.28).Conclusion: Genetic parameters indicated that FAs were under stronger genetic control. Therefore, we suggest implementing animal breeding programs towards improving the milk FA profile.

scholarly journals Estimation of Genetic Parameters for Muscle Area, Subcutaneous Fat of Carcass Cross section in Japanese Black Cattle

2004 ◽  
Vol 75 (4) ◽  
pp. 521-526 ◽  
Author(s):  
Takefumi OOSAWA ◽  
Mio HASEGAWA ◽  
Keigo KUCHIDA ◽  
Satoshi HIDAKA ◽  
Mitsuo SEKIKAWA ◽  
...  
Keyword(s):  
Cross Section ◽  
Genetic Parameters ◽  
Subcutaneous Fat ◽  
Japanese Black Cattle ◽  
Muscle Area ◽  
Estimation Of Genetic Parameters

scholarly journals Estimation of genetic parameters for superovulatory response traits in Japanese Black cows

2021 ◽  
Author(s):  
A Zoda ◽  
M Urakawa ◽  
Y Oono ◽  
S Ogawa ◽  
M Satoh
Keyword(s):  
Genetic Improvement ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Rank Correlation ◽  
Japanese Black Cattle ◽  
Spearman’S Rank Correlation ◽  
Spearman’S Rank Correlation Coefficient ◽  
Estimation Of Genetic Parameters ◽  
Response Traits ◽  
Donor Cows

Abstract The aim of this study was to estimate genetic parameters for superovulatory response traits in order to explore the possibility of genetic improvement in Japanese Black cows. 19 155 records of the total number of embryos and oocytes (TNE) and the number of good embryos (NGE) collected from 1532 donor cows between 2008 and 2018 were analyzed. A two-trait repeatability animal model analysis was performed for both. Because records of TNE and NGE did not follow a normal distribution, the records were analyzed following no, logarithmic, or Anscombe transformation. Without transformation, the heritability estimates were 0.26 for TNE and 0.17 for NGE. With logarithmic transformation, they were 0.22 for TNE and 0.18 for NGE. With Anscombe transformation, they were 0.26 for TNE and 0.18 for NGE. All analyses gave similar genetic correlations between TNE and NGE, ranging from 0.60 to 0.71. Spearman’s rank correlation coefficient between breeding values of cows with more than 10 records was ≥0.95 with both transformations. Thus, the genetic improvement of TNE and NGE of donor cows could be possible in Japanese Black cattle.

Estimation of genetic parameters for stillbirth of Japanese Black cattle in Kagoshima

2021 ◽  
Vol 92 (3) ◽  
pp. 285-291
Author(s):  
Hidemi OYAMA ◽  
Kiyoto IMAMURA ◽  
Shinichi SAKAMOTO ◽  
Kazutaka NISHI ◽  
Kotaro KAWABE ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Japanese Black Cattle ◽  
Estimation Of Genetic Parameters

Estimation of genetic parameters for body areas in Nile tilapia measured by digital image analysis

2021 ◽  
Author(s):  
Alex Júnio da Silva Cardoso ◽  
Carlos Antonio Lopes de Oliveira ◽  
Eric Costa Campos ◽  
Ricardo Pereira Ribeiro ◽  
Gutierrez José de Freitas Assis ◽  
...  
Keyword(s):  
Image Analysis ◽  
Digital Image ◽  
Nile Tilapia ◽  
Digital Image Analysis ◽  
Genetic Parameters ◽  
Estimation Of Genetic Parameters

scholarly journals Estimation of genetic parameters for fatty acid composition in M. longissimus thoracis of Japanese Black cattle

2012 ◽  
Vol 83 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Yoshinobu NAKAHASHI ◽  
Tetsuro YUSA ◽  
Yutaka MASUDA ◽  
Satoshi HIDAKA ◽  
Keigo KUCHIDA
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Genetic Parameters ◽  
Japanese Black Cattle ◽  
Estimation Of Genetic Parameters

Estimation of genetic parameters for growth and feed utilization traits in Japanese Black cattle

2005 ◽  
Vol 76 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Masayuki SHOJO ◽  
Jiang YONG ◽  
Katsuhito ANADA ◽  
Kenji OYAMA ◽  
Fumio MUKAI
Keyword(s):  
Genetic Parameters ◽  
Feed Utilization ◽  
Japanese Black Cattle ◽  
Estimation Of Genetic Parameters
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