Effects of malic acid on feed intake, milk yield, milk components and metabolites in early lactation Holstein dairy cows

2009 ◽  
Vol 124 (1-3) ◽  
pp. 182-188 ◽  
Author(s):  
C. Wang ◽  
Q. Liu ◽  
W.Z. Yang ◽  
Q. Dong ◽  
X.M. Yang ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Feed Intake ◽  
Malic Acid ◽  
Early Lactation ◽  
Milk Components ◽  
Holstein Dairy Cows

scholarly journals Effects of feeding dry glycerol on milk production, nutrients digestibility and blood components in primiparous Holstein dairy cows during the early postpartum period

2015 ◽  
Vol 13 (4) ◽  
pp. e0609 ◽  
Author(s):  
Farokh Kafilzadeh ◽  
Vahid Piri ◽  
Hamed Karami-Shabankareh
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Body Condition ◽  
Feed Intake ◽  
Postpartum Period ◽  
Body Condition Score ◽  
Nonesterified Fatty Acids ◽  
Early Postpartum Period ◽  
Early Postpartum ◽  
Holstein Dairy Cows

The aim of this study was to evaluate the glucogenic property of glycerol supplementation in the dairy cow’s diet. Sixty primiparous cows (control, n=30, and glycerol supplemented, n=30) were used to measure milk yield and components, blood hormone and metabolite profiles, and body condition score. Feed intake and apparent total-tract digestibility were also measured using 10 primiparous cows (control, n=5, and glycerol supplemented, n=5). Dry glycerol was top dressed at 250 g/day/cow from parturition to 21 days postpartum. Average feed intake, milk yield and components were not affected by glycerol supplementation. Apparent total–tract digestibility of organic matter and neutral detergent fibre were not influenced by dry glycerol supplementation, but lipid digestibility was greater (<em>p</em>=0.01) in cows fed glycerol. The serum concentration of glucose and insulin tended to be higher in dry glycerol-supplemented cows (<em>p</em>=0.1; <em>p</em>=0.06, respectively). While, serum concentrations of nonesterified fatty acids and <em>β</em>-hydroxybutyrate were not affected. Supplemented cows had lower body condition loss during weeks 1 to 5 after calving (<em>p=</em>0.09). The glucogenic effect of glycerol did not affect milk yield during the first 3 weeks of lactation. However, daily milk yield during the 13 weeks recording period was higher in the glycerol-supplemented cows (28.5 <em>vs</em>. 30.3 kg, <em>p&lt;</em>0.001). Percentages of cows cycling at the planned breeding date was greater (<em>p</em>=0.01) for cows fed dry glycerol. The results demonstrated that feeding dry glycerol as a glucogenic supply could be useful in saving body reserves and improving energy balance of primiparous Holstein dairy cows during the early postpartum period.

Effects of lactation month and season on test-day milkyield and milk components in Holstein cows

2016 ◽  
Author(s):  
Ertugrul Kul ◽  
Özden Çobanoglu ◽  
Eser Kemal Gurcan ◽  
Soner Çankaya ◽  
Samet Hasan Abaci ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Protein Content ◽  
Milk Yield ◽  
Fat Content ◽  
Protein Yield ◽  
Lactation Period ◽  
Milk Components ◽  
Fat Yield ◽  
Sampling Season ◽  
Holstein Dairy Cows

This study aims to determine the correlations between the test-day milk yield (TDMY) and the fat and protein content as well as the fat and protein yields in Holstein dairy cows and to investigate the effects of lactation period and sampling season on these parameters. The study material consists of 1.380 records of a total of 151 head of Holstein dairy cows raised on a private farm in Samsun province. In the study, the mean TDMY, fat content, protein content, fat yield and protein yield were recorded as 20.6±5.10 kg, 3.97±0.734%, 3.23±0.276%, 0.81±0.210 kg and 0.66±0.160 kg, respectively. The effects of lactation period and sampling season on the TDMY, fat content, protein content, fat yield and protein yield were found statistically significant (Pis less than 0.01). Statistically significant negative correlations were determined between the TDMY and the fat and protein content, but positive and statistically significant (Pis less than 0.01) correlations between the TDMY and the fat and protein yields. In conclusion, it might be stated that the effects of lactation period and sampling season should also be taken into account to improve milk yield and milk components.

scholarly journals Effect of changes in diet energy density on feed intake, milk yield and metabolic parameters in dairy cows in early lactation

animal ◽  
2007 ◽  
Vol 1 (3) ◽  
pp. 335-346 ◽  
Author(s):  
N.I. Nielsen ◽  
N.C. Friggens ◽  
T. Larsen ◽  
J.B. Andersen ◽  
M.O. Nielsen ◽  
...  
Keyword(s):  
Energy Density ◽  
Dairy Cows ◽  
Milk Yield ◽  
Feed Intake ◽  
Metabolic Parameters ◽  
Early Lactation

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.

Sign in / Sign up

Export Citation Format

Share Document