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Recent advances in understanding genetic variants associated with economically important traits in sheep

Song-Song XU, Meng-Hua LI

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 3,   Pages 279-288 doi: 10.15302/J-FASE-2017151

Abstract: Sheep are one of the most economically important domesticated animals for human society.This review covers recent genome-wide studies on sheep productive traits using high-throughput screeninginformation on functional genes and genetic variants associated with economically important traits in sheep

Keywords： sheep     high-throughput screening     productive traits     genome-wide studies    

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Impact of introducing a herb pasture area into a New Zealand sheep and beef hill country farm system:

Cécile DURANTON, Cory MATTHEW

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 87-97 doi: 10.15302/J-FASE-2018202

Abstract: New Zealand is well known for export of meat and dairy products from low cost pastoral systems. These farm systems are continually evolving for increased efficiency, in part through the use of metabolic energy modeling tools by farmers and farm consultants to explore alternative farm system configurations and identify new efficiencies. One recent innovation is the introduction of a herb pasture area, such as plantain. We used metabolic energy modeling to quantify seasonal feed flows in two successive years in a New Zealand hill country farm system, and to analyze the impact of the introduction of an area of plantain. Models employed were a self-built Microsoft Excel spreadsheet and a commercial New Zealand farm systems modeling package, FARMAX. Herbage production, animal performance and financial results for a base farm scenario created from the average of survey data for hill farms in the southern North Island, and the same farm with 10% and 20% of the area in plantain for the years 2010–2011 and 2011–2012 were modeled. The self-built model performed similarly to the commercial model. The system configuration of the base farm stockpiles surplus autumn feed for release to animals in winter and also incorporates flexibility that confers resilience to interannual weather variation through varying dates animals are purchased or sold. The introduction of an area of plantain was predicted to increase herbage production, animal performance and financial returns. The predicted benefit was higher for the year 2010–2011 where a drought occurred in summer than for the following year with higher summer rainfall. This demonstrates the profitability of introducing a plantain area to New Zealand hill farm systems, and suggests plantain will assist to mitigate adverse effects of warmer and drier summer conditions associated with current climate change trends.

Keywords： farm system configuration     herb pasture     metabolic energy budgeting     plantain     sheep and beef farming    

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The ecological adaptability of cloned sheep to free-grazing in the Tengger Desert of Inner Mongolia,

Xinxin LI,Huijuan WANG,Guanghua SU,Zhuying WEI,Chunling BAI,Wuni-MENGHE,Yanhui HOU,Changqing YU,Shorgan BOU,Guangpeng LI

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 3,   Pages 191-200 doi: 10.15302/J-FASE-2014029

Abstract: Since the birth of the first cloned sheep, somatic cell nuclear transfer technology has been successfullya harsh natural environment similar to conditions commonly experienced by Mongolian sheep.condition and behaved as other sheep. (2) The cloned sheep quickly adapted from a herd feeding strategycloned sheep exhibited free-grazing patterns and social behavior as other sheep. (4) The cloned sheepfor breeding meat sheep by cloning.

Keywords： somatic cell nuclear transfer     free-grazing synchronization     Dorper sheep     cloned animal ecology    

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The Application of Biological Technique in Scientific Research of Sheep Husbandry

Liu Shouren

Strategic Study of CAE 2001, Volume 3, Issue 7,   Pages 37-41

Abstract:

In the article, the application of biological technique in the scientific research of sheep husbandryThe application of biological technique not only improves the level of sheep breeding and production,Meanwhile, new ways and channels are opened up for scientific research and production in sheep husbandry

Keywords： biological technique     sheep husbandry    

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Study on germplasm characteristics and its application of poll dorset sheep

Zhao Youzhang,Li Fadi,Zhang Zijun,Cai Yuan,Sun Zhaogang,Yang Fuming,Wang Xugang,Zhang Derong

Strategic Study of CAE 2009, Volume 11, Issue 5,   Pages 88-96

Abstract:

In early 2000, 41 of Poll Dorset sheep were introduced from New Zealandinto Yongchang mutton sheep breeding farm, which is located at the Hexi Corridor in Gansu Province,ChinaThe introduced sheep were mainly rearing in confinement, and the grazing was used as assistant.After the systematic study of the introduced sheep, such as behavior, physiological and biochemical indexsheep breed in Gansu Province.

Keywords： Poll Dorset sheep     germplasm characteristics     application    

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Livestock breeding for the 21st century: the promise of the editing revolution

Chris PROUDFOOT, Gus MCFARLANE, Bruce WHITELAW, Simon LILLICO

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 2,   Pages 129-135 doi: 10.15302/J-FASE-2019304

Abstract:

In recent years there has been a veritable explosion in the use of genome editors to create site-specific changes, both and , to the genomes of a multitude of species for both basic research and biotechnology. Livestock, which form a vital component of most societies, are no exception. While selective breeding has been hugely successful at enhancing some production traits, the rate of progress is often slow and is limited to variants that exist within the breeding population. Genome editing provides the potential to move traits between breeds, in a single generation, with no impact on existing productivity or to develop phenotypes that tackle intractable issues such as disease. As such, genome editors provide huge potential for ongoing livestock development programs in light of increased demand and disease challenge. This review will highlight some of the more notable agricultural applications of this technology in livestock.

Keywords： cattle     pig     sheep     chicken     aquaculture     CRISPR    

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One-step generation of myostatin gene knockout sheep via the CRISPR/Cas9 system

Hongbing HAN,Yonghe MA,Tao WANG,Ling LIAN,Xiuzhi TIAN,Rui HU,Shoulong DENG,Kongpan LI,Feng WANG,Ning LI,Guoshi LIU,Yaofeng ZHAO,Zhengxing LIAN

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 1,   Pages 2-5 doi: 10.15302/J-FASE-2014007

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Progress on major genes for high fecundity in ewes

Qiuyue LIU,Zhangyuan PAN,Xiangyu WANG,Wenping HU,Ran DI,Yaxing YAO,Mingxing CHU

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4,   Pages 282-290 doi: 10.15302/J-FASE-2014042

Abstract: The existence of major genes affecting fecundity in sheep flocks throughout the world has been demonstratedThere are five mutations in growth differentiation factor 9 (GDF9) associated with sheep prolificacyN-acetylgalactosaminyltransferase 2 ( ) gene of is proposed as a new mechanism of ovulation rate regulation in sheep

Keywords： major gene     ovulation rate     sheep     reproduction    

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Title Author Date Type Operation

Recent advances in understanding genetic variants associated with economically important traits in sheep

Song-Song XU, Meng-Hua LI

Journal Article

Impact of introducing a herb pasture area into a New Zealand sheep and beef hill country farm system:

Cécile DURANTON, Cory MATTHEW

Journal Article

The ecological adaptability of cloned sheep to free-grazing in the Tengger Desert of Inner Mongolia,

Xinxin LI,Huijuan WANG,Guanghua SU,Zhuying WEI,Chunling BAI,Wuni-MENGHE,Yanhui HOU,Changqing YU,Shorgan BOU,Guangpeng LI

Journal Article

The Application of Biological Technique in Scientific Research of Sheep Husbandry

Liu Shouren

Journal Article

Study on germplasm characteristics and its application of poll dorset sheep

Zhao Youzhang,Li Fadi,Zhang Zijun,Cai Yuan,Sun Zhaogang,Yang Fuming,Wang Xugang,Zhang Derong

Journal Article

Livestock breeding for the 21st century: the promise of the editing revolution

Chris PROUDFOOT, Gus MCFARLANE, Bruce WHITELAW, Simon LILLICO

Journal Article

One-step generation of myostatin gene knockout sheep via the CRISPR/Cas9 system

Hongbing HAN,Yonghe MA,Tao WANG,Ling LIAN,Xiuzhi TIAN,Rui HU,Shoulong DENG,Kongpan LI,Feng WANG,Ning LI,Guoshi LIU,Yaofeng ZHAO,Zhengxing LIAN

Journal Article

Progress on major genes for high fecundity in ewes

Qiuyue LIU,Zhangyuan PAN,Xiangyu WANG,Wenping HU,Ran DI,Yaxing YAO,Mingxing CHU

Journal Article