Effect of the amount of concentrate offered in an automated milking system on dry matter intake, milk yield, milk composition, ruminal digestion, and behavior of primiparous Holstein cows fed isocaloric diets

The objectives of this study were to examine the effect of supplying post-ruminal L-glutamine in mid-lactation Holstein dairy cows on plasma amino acid profile, dry matter intake, milk yield and milk composition. The experiment was designed as a 4 × 4 Latin square with four 2-wk periods. Cows were continuously infused post-ruminally with graded levels of L-glutamine (L-Gln) for 5 consecutive days during the second week of each period. During the last 24 h of the infusion, blood plasma was collected every 6 h for the determination of plasma amino acid concentrations. Plasma Gln concentration increased (P < 0.05) with increasing L-Gln daily infusions. Infusion of 0, 100, 200, and 300 g d–1 resulted in blood plasma Gln concentrations of 289.5, 299.2, 356.4 and 386.2 mmol L–1, respectively. The level of Gln infusion also resulted in a decrease in the blood plasma concentration of phenylalanine, but the concentrations of all other amino acids were not affected. The administration of Gln did not affect dry matter intake, milk yield and milk composition. Key words: Post-ruminal, L-glutamine, plasma amino acids, milk constituents

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

Canadian Journal of Animal Science ◽

10.4141/cjas81-076 ◽

1981 ◽

Vol 61 (3) ◽

pp. 633-638 ◽

Cited By ~ 2

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.

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The effect of feeding dairy cattle during the transition phase on dry matter intake, blood metabolites, milk yield and milk composition

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200001022 ◽

2000 ◽

Vol 2000 ◽

pp. 101-101

Author(s):

J K Margerison ◽

B. Winkler ◽

K. Mowll ◽

R. Derrick ◽

E. Mcintosh ◽

...

Keyword(s):

Milk Yield ◽

Dairy Cow ◽

Feed Intake ◽

Dry Matter ◽

Live Weight ◽

Milk Composition ◽

Transition Phase ◽

Dry Matter Intake ◽

Liquid Feed ◽

Effect Of Feeding

Feeding the dairy cow during the transition phase (dry to lactating) has been found to effect subsequent feed intake and milk yield (Moorby et al., 1996; Olsson et al., 1998). The aim of this study was to compare the effect of feeding a liquid feed during the prepartum period on; feed intake, milk yield, milk composition, live weight loss and blood metabolite levels.

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Milk Yield, Milk Composition, and Behavior of Holstein Cows in Response to Jet Aircraft Noise Before Milking

Journal of Dairy Science ◽

10.3168/jds.s0022-0302(93)77489-5 ◽

1993 ◽

Vol 76 (6) ◽

pp. 1558-1567 ◽

Cited By ~ 5

Author(s):

H.H. Head ◽

R.C. Kull ◽

M.S. Campos ◽

K.C. Bachman ◽

C.J. Wilcox ◽

...

Keyword(s):

Milk Yield ◽

Milk Composition ◽

Aircraft Noise ◽

Holstein Cows ◽

And Behavior

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Effect of Cumin Seeds (Cuminum cyminum) in Feed Diets of Anatolian Water Buffaloes on Shelter into Gass Concentration, Milk Yield and Composition

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Animal Science and Biotechnologies ◽

10.15835/buasvmcn-asb:0002.20 ◽

2020 ◽

Vol 77 (1) ◽

pp. 41

Author(s):

Taşkın DEĞİRMENCİOĞLU ◽

Ercan ŞİMŞEK ◽

Halil UNAL ◽

Hasan KURALOĞLU ◽

Selda ÖZBILGIN

Keyword(s):

Statistical Analysis ◽

Milk Yield ◽

Somatic Cell Count ◽

Dry Matter ◽

Latin Square ◽

Milk Composition ◽

Dry Matter Intake ◽

Water Buffaloes ◽

Gas Concentration ◽

Animal Material

The research was carried out to determine the effects of cumin seeds in food diets of Anatolian water buffaloes (AWB) in shelter about gas concentration, milk yield and composition. The animal material of the experiment was conducted with 27 buffaloes at Karaoglan Village located in Mustafakemalpasa, Bursa. Three different buffalo shelters (E1, E2 and E3) and three different diets (S1; S2; and S3) (0, 10 and 30 g grounding cumin seeds (GCS) kg-1) in 3x3 a replicated Latin square design was used with nine replicates of one buffalo each. Periods lasted 21 days, in which the first two weeks were preliminary for adaptation and data for statistical analysis collected in week 3. In conclusion, It has been determined that 30 g cumin supplementation to AWB diets (S3; one kg of diet) significantly increased total dry matter intake and milk yield of AWB (P<0:01). Meanwhile; there were no significant effects of diets containing cuminun seeds in milk composition, somatic cell count (SCC) and shelter about gas concentrations (CH4, NH3 and CO2).

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