Methionine precursor effects on lactation performance of dairy cows fed raw or heated soybeans

Falling prices for cereals and beneficial effects on milk protein concentrations may promote greater inclusions of rapidly fermented ingredients in dairy rations. There is, however, a limit to the inclusion of these feeds into dairy rations beyond which performance declines due to sub-acidosis and related disorders. The feed compounder will need to be able to set limits on levels of feeding concentrates according to these risks. The objective of this experiment was to evaluate the effect of feeds of different acidogenicity (Wadhwa et al., 1998) on lactation performance of dairy cows offered diets based on grass- or maize-silage.Twelve multiparous Holstein-Friesian cows in the third month of lactation were used for this experiment. The experimental design involved adaptation and covariance recording on a standard diet (grass silage and 10 kg concentrates per day), followed by three 21-day experimental periods arranged as four 3x3 Latin Squares. The Latin Squares were constrained to a single forage to avoid difficulties in changeovers between grass silage and maize silage.

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1505 Influence of essential amino acid balancing postpartum on lactation performance by dairy cows through a meta-analysis

Journal of Animal Science ◽

10.2527/jam2016-1505 ◽

2016 ◽

Vol 94 (suppl_5) ◽

pp. 730-731

Author(s):

L. F. Ferraretto ◽

C. S. Ballard ◽

C. J. Sniffen ◽

I. Shinzato

Keyword(s):

Amino Acid ◽

Dairy Cows ◽

Essential Amino Acid ◽

Meta Analysis ◽

Lactation Performance

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Lactation performance and serum biochemistry of dairy cows fed supplemental chromium in the transition period

AFRICAN JOURNAL OF BIOTECHNOLOGY ◽

10.5897/ajb11.1132 ◽

2011 ◽

Vol 10 (50) ◽

pp. 10304-10310 ◽

Cited By ~ 9

Author(s):

Khalili M ◽

Forooz A D ◽

eh ◽

Toghyani M

Keyword(s):

Dairy Cows ◽

Transition Period ◽

Serum Biochemistry ◽

Lactation Performance

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An Exploration of the Effects of an Early Postpartum Intravenous Infusion with Carnosic Acid on Physiological Responses of Transition Dairy Cows

Antioxidants ◽

10.3390/antiox10091478 ◽

2021 ◽

Vol 10 (9) ◽

pp. 1478

Author(s):

Tainara Cristina Michelotti ◽

Erminio Trevisi ◽

Johan S. Osorio

Keyword(s):

Oxidative Stress ◽

Dairy Cows ◽

Intravenous Infusion ◽

Transition Period ◽

Carnosic Acid ◽

Lactation Performance ◽

Oxidative Stress Biomarkers ◽

Blood Concentrations ◽

Beneficial Effects ◽

And Oxidative Stress

The objective of the present study was to evaluate the effects of an antioxidant and anti-inflammatory compound found in rosemary plants (Salvia rosmarinus) named carnosic acid during the transition period of dairy cows. From day 1 to 3 after calving, 16 multiparous Holstein cows received a daily intravenous infusion of either 500 mL of saline (NaCl 0.9%; Saline; n = 8) or carnosic acid at a rate of 0.3 mg/kg of BW supplied in 500 mL of saline (CA; n = 8). Blood samples were taken at –7, 2, 5, 7, 14, and 21 d relative to parturition, then analyzed for metabolites related to energy metabolism, muscle mass catabolism, liver function, inflammation, and oxidative stress. CA infusion tended to improve milk performance; however, DMI was unaffected by treatment. At 2 d relative to parturition, CA cows had lower blood concentrations of haptoglobin, paraoxonase, FRAP, and NO2– than saline cows. After treatment infusions, haptoglobin remained lower in CA cows than saline at 5 d relative to parturition. Our results demonstrate that carnosic acid promoted positive responses on inflammation and oxidative stress biomarkers and may promote beneficial effects on lactation performance in peripartal dairy cows.

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Lactation performance and nitrogen efficiency of dairy cows fed increasing amounts of microencapsulated methionine

10.31274/etd-20200902-77 ◽

2020 ◽

Author(s):

Layla King

Keyword(s):

Dairy Cows ◽

Nitrogen Efficiency ◽

Lactation Performance

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Effect of Natural Chinese Herbal Supplements (TCMF4) on Lactation Performance and Serum Biomarkers in Peripartal Dairy Cows

Frontiers in Veterinary Science ◽

10.3389/fvets.2021.801418 ◽

2022 ◽

Vol 8 ◽

Author(s):

Yizhe Cui ◽

Zhuorui Shan ◽

Lintong Hou ◽

Qiuju Wang ◽

Juan J. Loor ◽

...

Keyword(s):

Dairy Cows ◽

Milk Production ◽

Total Protein ◽

Dose Group ◽

Production Performance ◽

High Dose Group ◽

Holstein Cows ◽

Control Group ◽

High Dose ◽

Lactation Performance

This study examined the effect of mixed medicinal herbs from China in the ground form on milk yield and various blood metabolites before and after parturition in Holstein cows. Crushed Agastache rugosus, Scutellaria barbata, Pericarpium citri reticulate, and Radix glycyrrhizae were used to develop TCMF4. Thirty-two Chinese Holstein cows were randomly divided into a control group or groups receiving 0.1, 0.3, or 0.5 kg TCMF4/cow/d from −7 through 21 d relative to parturition. Blood samples for serum isolation were collected at −7, −1, 1, 7, 14, and 21 d relative to parturition and used to measure glucose, β-hydroxybutyric acid (BHBA), total protein, albumin, globulin, and alkaline phosphatase. Milk production was recorded daily for the first 21 d postpartum, and composition was analyzed at 7, 14, and 21 d. Data were analyzed using a one-way analysis of variance (ANOVA) for multiple comparisons. The average milk production during the first 21-d postpartum was 28.7 ± 6.9, 27.2 ± 7.1, 31.2 ± 6.8, and 38.5 ± 6.1 kg/d for control group and groups receiving 0.1, 0.3, or 0.5 kg TCMF4. Thus, average daily milk production increased between 9 to 34% by supplementation with TCMF4 compared with the control group. Compared with the control group, in the middle dose group, milk concentrations of lactose and total protein decreased by 21 and 19%, respectively, at d 7 around parturition, while total solids increased by 23% at d 21 in the high-dose group. Furthermore, compared with the control group, serum BHBA decreased by 50 and 20% at d −1 and 21 around parturition in the high-dose group. Overall, TCMF4 supplementation improved dry matter intake (DMI) and milk production of dairy cows during the periparturient period without adverse effects on liver function, and plasma BHBA concentrations of dairy cows tended to decrease when dietary TCMF4 increased, which suggested that TCMF4 might be used as potential additives in dairy cows to improve production performance.

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