1315 Effect of increasing doses of abomasally infused linseed oil on animal performance and oxidative stability of milk in Holstein dairy cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 634-634
Author(s):  
D. E. Rico ◽  
R. Gervais ◽  
S. M. Peña-Cotrino ◽  
C. Cohou ◽  
Y. Lebeuf ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Dairy Cows ◽  
Linseed Oil ◽  
Animal Performance ◽  
Holstein Dairy Cows

scholarly journals Characterization of Short-Term Heat Stress in Holstein Dairy Cows Using Altered Indicators of Metabolomics, Blood Parameters, Milk MicroRNA-216 and Characteristics

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Jang-Hoon Jo ◽  
Jalil Ghassemi Nejad ◽  
Dong-Qiao Peng ◽  
Hye-Ran Kim ◽  
Sang-Ho Kim ◽  
...  
Keyword(s):  
Heat Stress ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Blood Parameters ◽  
Negative Effects ◽  
Short Term ◽  
Lactating Cows ◽  
Humidity Index ◽  
Holstein Dairy Cows

This study aims to characterize the influence of short-term heat stress (HS; 4 day) in early lactating Holstein dairy cows, in terms of triggering blood metabolomics and parameters, milk yield and composition, and milk microRNA expression. Eight cows (milk yield = 30 ± 1.5 kg/day, parity = 1.09 ± 0.05) were homogeneously housed in environmentally controlled chambers, assigned into two groups with respect to the temperature humidity index (THI) at two distinct levels: approximately ~71 (low-temperature, low-humidity; LTLH) and ~86 (high-temperature, high-humidity; HTHH). Average feed intake (FI) dropped about 10 kg in the HTHH group, compared with the LTLH group (p = 0.001), whereas water intake was only numerically higher (p = 0.183) in the HTHH group than in the LTLH group. Physiological parameters, including rectal temperature (p = 0.001) and heart rate (p = 0.038), were significantly higher in the HTHH group than in the LTLH group. Plasma cortisol and haptoglobin were higher (p < 0.05) in the HTHH group, compared to the LTLH group. Milk yield, milk fat yield, 3.5% fat-corrected milk (FCM), and energy-corrected milk (ECM) were lower (p < 0.05) in the HTHH group than in the LTLH group. Higher relative expression of milk miRNA-216 was observed in the HTHH group (p < 0.05). Valine, isoleucine, methionine, phenylalanine, tyrosine, tryptophan, lactic acid, 3-phenylpropionic acid, 1,5-anhydro-D-sorbitol, myo-inositol, and urea were decreased (p < 0.05). These results suggest that early lactating cows are more vulnerable to short-term (4 day) high THI levels—that is, HTHH conditions—compared with LTLH, considering the enormous negative effects observed in measured blood metabolomics and parameters, milk yield and compositions, and milk miRNA-216 expression.

scholarly journals Effects of maintaining eucalcemia following immunoactivation in lactating Holstein dairy cows

2020 ◽  
Vol 103 (8) ◽  
pp. 7472-7486 ◽  
Author(s):  
E.A. Horst ◽  
E.J. Mayorga ◽  
M. Al-Qaisi ◽  
M.A. Abeyta ◽  
S.L. Portner ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Holstein Dairy Cows

scholarly journals Genetic parameters of endocrine fertility traits based on in-line milk progesterone profiles in Swedish Red and Holstein dairy cows

2019 ◽  
Vol 102 (12) ◽  
pp. 11207-11216 ◽  
Author(s):  
G.M. Tarekegn ◽  
P. Gullstrand ◽  
E. Strandberg ◽  
R. Båge ◽  
E. Rius-Vilarrasa ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Genetic Parameters ◽  
Fertility Traits ◽  
Holstein Dairy Cows
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