Haematobia irritans parasitism of F1 yak × beef cattle ( Bos grunniens  ×  Bos taurus ) hybrids

2019 ◽  
Vol 33 (4) ◽  
pp. 546-551 ◽  
Author(s):  
C. M. Calkins ◽  
J. D. Scasta ◽  
T. Smith ◽  
M. M. Stayton ◽  
S. L. Lake
Keyword(s):  
Beef Cattle ◽  
Bos Taurus ◽  
Haematobia Irritans ◽  
Bos Grunniens

scholarly journals Comparison of Metabolic Network between Muscle and Intramuscular Adipose Tissues in Hanwoo Beef Cattle Using a Systems Biology Approach

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Hyun-Jeong Lee ◽  
Hye-Sun Park ◽  
Woonsu Kim ◽  
Duhak Yoon ◽  
Seongwon Seo
Keyword(s):  
Systems Biology ◽  
Beef Cattle ◽  
Metabolic Regulation ◽  
Bos Taurus ◽  
Adipose Tissues ◽  
Chemokine Signaling ◽  
Gene Network Analysis ◽  
Chemokine Signaling Pathway ◽  
Subcutaneous Adipose

The interrelationship between muscle and adipose tissues plays a major role in determining the quality of carcass traits. The objective of this study was to compare metabolic differences between muscle and intramuscular adipose (IMA) tissues in thelongissimus dorsi(LD) of Hanwoo (Bos taurus coreanae) using the RNA-seq technology and a systems biology approach. The LD sections between the 6th and 7th ribs were removed from nine (each of three cows, steers, and bulls) Hanwoo beef cattle (carcass weight of430.2±40.66 kg) immediately after slaughter. The total mRNA from muscle, IMA, and subcutaneous adipose and omental adipose tissues were isolated and sequenced. The reads that passed quality control were mapped onto the bovine reference genome (build bosTau6), and differentially expressed genes across tissues were identified. The KEGG pathway enrichment tests revealed the opposite direction of metabolic regulation between muscle and IMA. Metabolic gene network analysis clearly indicated that oxidative metabolism was upregulated in muscle and downregulated in IMA. Interestingly, pathways for regulating cell adhesion, structure, and integrity and chemokine signaling pathway were upregulated in IMA and downregulated in muscle. It is thus inferred that IMA may play an important role in the regulation of development and structure of the LD tissues and muscle/adipose communication.

Comparison of nitrogen utilization and urea kinetics between yaks (Bos grunniens) and indigenous cattle (Bos taurus)1

2017 ◽  
Vol 95 (10) ◽  
pp. 4600-4612 ◽  
Author(s):  
J. W. Zhou ◽  
C. L. Zhong ◽  
H. Liu ◽  
A. A. Degen ◽  
E. C. Titgemeyer ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Nitrogen Utilization ◽  
Indigenous Cattle ◽  
Bos Grunniens ◽  
Urea Kinetics

scholarly journals Molecular cloning and sequence characterization of two genes, DQA1 and DQA2,from the Chinese yakow (Bos grunniens × Bos taurus)

2017 ◽  
Vol 41 ◽  
pp. 136-141
Author(s):  
Dongmei XI ◽  
Sameeullah MEMON ◽  
Guozhi LI ◽  
Xiangying LIU ◽  
Chao SU ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
Bos Taurus ◽  
Sequence Characterization ◽  
Bos Grunniens

Control of buffalo fly (Haematobia irritans exigua de Meijere) on dairy and beef cattle using traps

1995 ◽  
Vol 46 (2) ◽  
pp. 269 ◽  
Author(s):  
RW Sutherst ◽  
RS Tozer
Keyword(s):  
Beef Cattle ◽  
Environmentally Friendly ◽  
Haematobia Irritans ◽  
Initial Design ◽  
Shade Cloth ◽  
Design And Testing

The design and testing of traps are described for control of the buffalo fly Haematobia irritans exigua on dairy and beef cattle in Australia. The initial design, for use on milking cows, consisted of a translucent, plastic-covered tunnel, with compartments separated by plastic partitions and doorways with black shade-cloth curtains. The curtains brushed flies off the cattle as they passed through the tunnel. The flies were attracted to the light and ascended the walls to be confined in the dome-shaped roof. The traps removed 80% of the flies each time the cattle passed through them. During farm trials in 1990-91, fly numbers (8) on milking cows were reduced by 85% compared with those (94) on other cattle on the same farm, and by 65% compared with neighbouring milking cows (30), which received an average of three pesticide treatments. Breeding of buffalo fly was reduced by 81% on the pastures grazed by milking cattle using the traps. In 1992 and 1993, a smaller portable trap was developed for use by all types of cattle. Replacement of the shade-cloth curtains with brushes and addition of a translucent false ceiling increased the efficiency of the trap from 80 to 90%. The traps achieved 90% control on five dairy and two beef properties compared with cattle given traditional pesticide treatments. The results demonstrate the feasibility of controlling Haematobia without insecticides, by using a simple, sustainable and environmentally friendly trap, provided that cattle use the traps regularly.

Nucleotide sequence and polymorphism of MHC class IIDQBexon 2 alleles in Chinese yakow (Bos grunniens × Bos taurus)

2014 ◽  
Vol 41 (3) ◽  
pp. 269-275 ◽  
Author(s):  
D. Xi ◽  
T. Hao ◽  
Y. He ◽  
J. Leng ◽  
Y. Sun ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Bos Taurus ◽  
Bos Grunniens

Effects of physically effective neutral detergent fibre content on dry-matter intake, digestibility and chewing activity in beef cattle fed total mixed ration

2015 ◽  
Vol 55 (2) ◽  
pp. 166 ◽  
Author(s):  
Jae Hyun Park ◽  
Kyoung Hoon Kim ◽  
Pyo Jam Park ◽  
Byong Tae Jeon ◽  
Mi Rae Oh ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Dry Matter ◽  
Bos Taurus ◽  
Mixing Time ◽  
Latin Square ◽  
Eating Rate ◽  
Total Mixed Ration ◽  
Neutral Detergent Fibre ◽  
Significant Difference ◽  
Chewing Activity

Our aim in this study was to determine the effects of physically effective neutral detergent fibre (peNDF) in a total mixed ration (TMR) on feed intake, digestibility and chewing activity in beef cattle. The experiment had a replicated 3 × 3 Latin square desig, using three fattening Hanwoo (Bos taurus coreanae) steers with ruminal cannulas. Steers were offered one of three diets (high, medium or low peNDF content) obtained by mixing the same TMR for different periods of time (5, 13 and 25 min). peNDF content of TMR was calculated as [total chewing time/NDF intake (kg)] × dietary NDF content, and the proportion of sample dry matter (DM) collected in a ≥1.18-mm sieve is commonly used as the physical effectiveness factor in the equation. The peNDF1.18 contents of the high, medium and low diets were 25.97%, 21.10% and 17.94% (P < 0.05). In addition, the proportion of particles collected on the 19-mm, 1.18-mm, and pan sieves changed linearly with an increase of TMR mixing time. Mean particle-size distributions of diets were 11.43, 24.11, 30.70 and 33.68 for 19 mm, 8 mm, 1.18 mm and pan, respectively. Eating rate and ruminating and chewing efficiencies were significantly decreased with reduced peNDF content, and DM intake was increased significantly (P < 0.05). Lower peNDF content reduced the total number of chews significantly (P < 0.05). Total time spent chewing associated with eating was not affected by peNDF contents. Digestibility of DM, crude protein and crude fat decreased with reducing peNDF content in the diet, but there was no significant difference among the three groups. These results indicated that peNDF affects intake, digestibility and chewing activity in beef cattle. Therefore, high levels of peNDF appears to improve TMR, as it can increase efficiency and may prevent ruminal disorders in Hanwoo steer.

The effects of hair density of beef cattle on Haematobia irritans horn fly populations

1997 ◽  
Vol 11 (3) ◽  
pp. 257-264 ◽  
Author(s):  
C. D. STEELMAN ◽  
M. A. BROWN ◽  
E. E. GBUR ◽  
G. TOLLEY
Keyword(s):  
Beef Cattle ◽  
Hair Density ◽  
Haematobia Irritans ◽  
Horn Fly
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