1558 Effects of functional oils or monensin on dry matter digestibility, milk yield, and composition of Holstein cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 757-757
Author(s):  
F. P. Rennó ◽  
E. F. Jesus ◽  
T. A. Del Valle ◽  
G. D. Calomeni ◽  
T. H. Silva ◽  
...  
Keyword(s):  
Milk Yield ◽  
Dry Matter ◽  
Holstein Cows ◽  
Dry Matter Digestibility ◽  
Functional Oils

Influence of Cracked, Coarse Ground or Fine Ground Corn on Digestion, Dry Matter Intake and Milk Yield in Holstein Cows

2009 ◽  
Vol 35 (2) ◽  
pp. 149-154 ◽  
Author(s):  
A. Plascencia ◽  
V. M. González-Vizcarra ◽  
M. A. López-Soto ◽  
D. May ◽  
L. C. Pujol ◽  
...  
Keyword(s):  
Milk Yield ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Holstein Cows ◽  
Ground Corn

scholarly journals Dry Matter Intake, Milk Yield and Composition, and Nitrogen Use in Holstein Cows Fed Soybean, Fish, or Corn Gluten Meals

1991 ◽  
Vol 74 (5) ◽  
pp. 1609-1622 ◽  
Author(s):  
J.E. Wohlt ◽  
S.L. Chmiel ◽  
P.K. Zajac ◽  
L. Backer ◽  
D.B. Blethen ◽  
...  
Keyword(s):  
Milk Yield ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Holstein Cows ◽  
Nitrogen Use ◽  
Corn Gluten

scholarly journals Genetic relationship between milk dry matter and other milk traits in extended lactations of Polish Holstein cows

2010 ◽  
Vol 55 (No. 3) ◽  
pp. 91-104 ◽  
Author(s):  
K. Yazgan ◽  
J. Makulska ◽  
A. Węglarz ◽  
E. Ptak ◽  
M. Gierdziewicz
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Fixed Effects ◽  
Dry Matter ◽  
Genetic Correlations ◽  
Random Regression ◽  
Holstein Cows ◽  
Milk Traits ◽  
Data Set ◽  
The Third

The objective of this research was to examine heritabilities and genetic, phenotypic and permanent environmental relationships between milk dry matter (DM) and milk traits such as milk, fat, protein and lactose yields, milk urea nitrogen (MUN) and somatic cell score (SCS) in extended (to 395 days) lactations of Holstein cows from a big farm in Poland. The data set consisted of 78 059 test day records from the first, second and third lactations of 3 792 cows, daughters of 210 sires and 1 677 dams. Single- or two-trait random regression models were used with fixed effects of calving year, calving month, dry period and calving interval and random additive genetic and permanent environmental effects. The last two fixed effects were not included in the analysis of first lactation data. The highest values of heritabilities for all traits, except DM, were observed in the second lactation. First lactation heritabilities for all traits – except milk yield and SCS – were smaller than those in the third lactation. Lactose yield was highly heritable, with average h<SUP>2</SUP> equal to 0.25, 0.29 and 0.28 in lactations 1, 2 and 3, respectively. Heritability for DM was slightly lower than that for lactose (0.22, 0.26 and 0.28 for lactations 1, 2 and 3, respectively). In all lactations heritabilities for SCS were below 0.1. Genetic correlations between DM and milk yield (0.64–0.74) were lower than those between MUN and milk yield (0.67–0.79) as well as between lactose and milk yield (0.72–0.82). In general, DM was much more closely correlated with fat or protein yield (0.55–0.79) than with MUN or lactose (0.38–0.76). Only in the third lactation the correlation between DM and protein (0.72) was lower than between lactose and protein (0.76). For all lactations there were very high genetic correlations between DM and lactose (0.96–0.98) and high correlations between DM and MUN (0.63–0.83) and between lactose and MUN (0.70–0.85). The results suggest that further research is needed, focused on DM and its relationship with other traits in larger populations. &nbsp;

EFFECT OF LEVEL OF ALFALFA PELLETS ON INTAKE OF EARLY AND LATE HARVESTED TIMOTHY SILAGES OF DIFFERENT DRY MATTER CONTENT BY DAIRY COWS

1981 ◽  
Vol 61 (3) ◽  
pp. 633-638 ◽  
Author(s):  
P. L. BURGESS ◽  
J. W. G. NICHOLSON ◽  
E. A. GRANT
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Milk Composition ◽  
Matter Content ◽  
Holstein Cows ◽  
Dry Matter Content ◽  
Timothy Grass ◽  
Ad Libitum

Two experiments were carried out, using 36 lactating Holstein cows, to determine the effect of three levels (0, 4.5 and 9.0 kg/day) of alfalfa pellets (AP) on the ad libitum consumption of early and late harvested timothy grass silages of different dry matter (DM) content. Cows consumed significantly more wilted than nonwilted silage DM for both the early and late harvested grass, although milk yields were similar for both groups. For the early harvested, wilted and nonwilted silages, feeding AP did not significantly depress silage DM intake until a level of 9.0 kg/day was reached. Total ration DM intake increased significantly with each increment of AP. With the late harvested silages, AP at the 9.0 kg/day level reduced nonwilted silage DM intake while with the wilted silage each increase of AP significantly lowered silage DM intake. Both the 4.5 and 9.0 kg/day of AP increased total DM consumption with the nonwilted silage but 9.0 kg/day of AP was required to significantly increase total DM intake for cows fed the late harvested, wilted silage. Milk yield and milk composition were not changed by the level of AP supplementation or the type of silage fed.

The effect of forage maize hybrid type on in vivo and in vitro dry matter digestibility

2003 ◽  
Vol 2003 ◽  
pp. 190-190
Author(s):  
A. Kamalak ◽  
O Ozay ◽  
H. Gizir
Keyword(s):  
Chemical Composition ◽  
Milk Yield ◽  
Dry Matter ◽  
Forage Maize ◽  
Maize Hybrid ◽  
Hybrid Type ◽  
Dry Matter Digestibility

The digestibility values of forages have long been recognised as an important parameter affecting both milk yield and growth of ruminants. Several methods (in vivo and in vitro) are used to determine digestibility of forages. The aim of this experiment was to determine the effect of chemical composition of silages on the in vivo and in vitro DMD of maize silages.

A comparative study of dry matter intake and digestive pool variations in Manchega and Lacaune dairy sheep

1999 ◽  
Vol 1999 ◽  
pp. 98-98
Author(s):  
E. Molina ◽  
A. Ferret ◽  
G. Caja ◽  
S. Calsamiglia ◽  
J. Gasa
Keyword(s):  
Milk Yield ◽  
Dry Matter ◽  
Body Condition Score ◽  
Late Pregnancy ◽  
Dry Matter Intake ◽  
Dry Matter Digestibility ◽  
Condition Score ◽  
Pregnancy And Lactation ◽  
And Performance ◽  
Average Body

Manchega (MN) and Lacaune (LC) are two semi-coarse-wooled dairy breeds with similar size but different milk yield, the latter producing twice as much milk as the former (Pérez, 1997). The aim of this experiment was to compare, under the same feed conditions, dry matter intake and performance in late pregnancy and lactation and digestive pools of these two breeds.Twenty-four ewes, 12 per breed, were used in three different periods: late pregnancy (8 weeks), rearing (5 weeks) and milking (7 weeks). At lambing, average body weight was 74.4 vs 78.5 kg, for LC and MN, respectively. Dry matter intake (DMI), apparent dry matter digestibility (DMD), body condition score (BCS) and milk yield (MY) standardized according to Bocquier et al. (1993) were recorded.

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