scholarly journals Effects of hydrolysable tannin-treated grass silage on milk yield and composition, nitrogen partitioning and nitrogen isotopic discrimination in lactating dairy cows

animal ◽  
2020 ◽  
Vol 14 (4) ◽  
pp. 771-779 ◽  
Author(s):  
S. Herremans ◽  
V. Decruyenaere ◽  
G. Cantalapiedra-Hijar ◽  
Y. Beckers ◽  
E. Froidmont
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Nitrogen Partitioning ◽  
Hydrolysable Tannin ◽  
Isotopic Discrimination ◽  
Grass Silage ◽  
Lactating Dairy Cows

scholarly journals The Order of Grass and Maize Silage Supplementation Modifies Milk Yield, Grazing Behavior and Nitrogen Partitioning of Lactating Dairy Cows

Animals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 373 ◽  
Author(s):  
Ignacio E. Beltrán ◽  
Omar Al-Marashdeh ◽  
Ana R. Burgos ◽  
Pablo Gregorini ◽  
Oscar A. Balocchi ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Milk Protein ◽  
Nitrogen Partitioning ◽  
Maize Silage ◽  
Grazing Behavior ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Holstein Friesian

The aim of this study was to evaluate the effects of the order of grass silage (GS) and maize silage (MS) supplementation on milk yield, grazing behavior and nitrogen (N) partitioning of lactating dairy cows during autumn. Thirty-six Holstein-Friesian dairy cows were randomly assigned to one of three treatments, and cows remained on these treatments for a 62 days period: (1) MIX; cows supplemented with 3 kg of dry matter (DM) of silage containing 1.5 kg DM of MS and 1.5 kg DM of GS in both the morning and afternoon; (2) GS-MS; cows supplemented with 3 kg DM of GS in the morning and 3 kg DM of MS in the afternoon; (3) MS-GS; cows supplemented with 3 kg DM of MS in the morning and 3 kg DM of GS in the afternoon. All cows received a pasture allowance of 17 kg DM/cow/d and 3 kg DM of concentrate. Grazing time and pasture intake were unaffected by treatment; however, milk production was greater for MS-GS, while milk protein was greater for GS-MS. Urinary N excretion was greater for MS-GS than MIX. In conclusion, MS-GS resulted in high milk yield but also high urinary N excretion, while MIX resulted in low urinary N excretion but also decreased milk yield.

The responses of lactating dairy cows to diets based on grass silage of high or low DM and supplemented with fast and slowly fermentable energy sources

1997 ◽  
Vol 1997 ◽  
pp. 84-84
Author(s):  
D. L. Romney ◽  
V. Blunn ◽  
J. D. Leaver
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Feeding Behaviour ◽  
Nutrient Absorption ◽  
Energy Sources ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
The Difference ◽  
Present Trial

It has often been observed that increasing silage DM through wilting increases DM intake, although digestibility and efficiency of utilisation of nutrients tends to decrease, resulting in poor responses in terms of milk yield. Rapid solubilisation of nutrients in the rumen may give rise to rapid nutrient absorption, activating satiety mechanisms and resulting in shorter meals. In the present trial the difference in DM content of the silages was high (>200g/kg). Supplements based on different energy sources were fed to determine whether synchronisation of release of nutrients from the silage and the supplement modified DM intake and feeding behaviour.

scholarly journals Effects of ruminally protected amino acids on milk yield and blood components of early lactating dairy cows fed grass silage-based diet.

2002 ◽  
Vol 73 (3) ◽  
pp. 417-422 ◽  
Author(s):  
Tsutomu OHGI ◽  
Yashuhiro MINEZAKI ◽  
Mamiko FUJITA ◽  
Masaaki HANADA ◽  
Masanobu TAKAHASHI ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Milk Yield ◽  
Blood Components ◽  
Grass Silage ◽  
Lactating Dairy Cows

Effect of dietary tannins on milk yield and composition, nitrogen partitioning and nitrogen use efficiency of lactating dairy cows: A meta‐analysis

2020 ◽  
Vol 104 (5) ◽  
pp. 1209-1218 ◽  
Author(s):  
Sophie Herremans ◽  
Frédéric Vanwindekens ◽  
Virginie Decruyenaere ◽  
Yves Beckers ◽  
Eric Froidmont
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Nitrogen Use Efficiency ◽  
Meta Analysis ◽  
Nitrogen Partitioning ◽  
Nitrogen Use ◽  
Lactating Dairy Cows ◽  
Use Efficiency ◽  
Dietary Tannins

scholarly journals Effects of Supplemental Fish Meal on Milk Yield and Blood Components of Early Lactating Dairy Cows Fed Grass Silage-based Diets.

2002 ◽  
Vol 73 (4) ◽  
pp. 489-494 ◽  
Author(s):  
Tsutomu OHGI ◽  
Masaaki HANADA ◽  
Yashuhiro MINEZAKI ◽  
Mamiko FUJITA ◽  
Masanobu TAKAHASHI ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Fish Meal ◽  
Blood Components ◽  
Grass Silage ◽  
Lactating Dairy Cows

The effects of feeding high concentrations of molasses and supplementing with nitrogen and unprotected tallow on intake and performance of dairy cows

1997 ◽  
Vol 64 (1) ◽  
pp. 17-24 ◽  
Author(s):  
T. Yan ◽  
D. J. Roberts ◽  
J. Higginbotham
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Control Diet ◽  
Soya Bean ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Bean Meal ◽  
High Concentrations ◽  
And Performance ◽  
Soya Bean Meal

AbstractA series of three replicated 3 × 3 Latin-square design experiments was carried out with lactating dairy cows (15 in experiments 1 and 3, and 18 in experiment 2). The objectives of these experiments were to investigate if the feeding of high concentrations of molasses would be detrimental to the performance or health of cows, and if the strategic supplementation of nitrogen or unprotected fat could enhance the efficiency of molasses feeding. In experiment 1, complete diets were based on grass silage with three inclusion rates of a liquid molasses-based supplement (Molaferm 20) to supply molasses dry matter (DM) of 125, 250 and 375 g/kg DM respectively. In experiment 2, the control diet contained (g/kg DM) 460 grass silage, 310 'molaferm 20' and 192 barley and 22 soya-bean meal, and was then supplemented with urea (12 g/kg DM) or soya-bean meal (177 g/kg DM). In experiment 3, the control diet was based on (g/kg DM) grass silage (460), molaferm 20 (310), barley (130), soya-bean meal (65) and oatfeed (20). Two concentrations, low and high, of unprotected tallow were added to the control diet (12·5 and 25·8 g/kg DM, respectively).In experiment 1, cows suffered from some scouring on the highest molasses treatment, but recovered when changed to either the medium or low molasses treatment. However, there were no clinical symptoms of ill health observed during experiments 2 and 3. In experiment 1, animal intake and performance on the diets containing molasses DM of 125, 250 and 375 g/kg DM respectively were: total DM intake, 12·8, 16·2 and 18·6 kg/day (s.e.d. 1·03, P < 0·001); milk yield, 15·5,17·4 and 17·6 kg/day (s.e.d. 0·53, low v. medium or high, P < 0·01); fat concentration, 39·6, 39·7 and 40·0g/kg (s.e.d. 0·70, P>0·05); protein concentration, 31·6, 32·7 and 33·6g/kg (s.e.d. 0·22, P < 0·05). In experiment 2, supplementation of the control diet both with urea and soya-bean meal significantly increased DM intake (P < 0·01); milk yield (P < 0·01) and protein concentration in milk (P < 0·05), but had no significant effects on fat concentration in milk (P > 0·05). In experiment 3, there were no significant differences in DM intake between the three treatments. However, supplementation with both low and high concentrations of unprotected tallow significantly increased milk yield (P < 0·01) and significantly decreased fat (P < 0·01) and protein (P < 0·001) concentrations in milk.It is concluded that lactating dairy cows could be given molasses up to 250 g/kg DM in grass silage-based complete diets without adverse effects on milk production or health. When a diet contained a high concentration of molasses (248 g/kg DM), supplementation with urea and soya-bean meal increased intake and milk production, and supplementation with unprotected tallow also increased milk yield, but fat and protein concentrations in milk were decreased.

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