294 Effect of Supplementing Rumen-protected Methionine on Production, Apparent Digestibility and Economic Effectiveness in Lactating Holstein Dairy Cows

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 159-159
Author(s):  
Jialin Wei ◽  
Zhijun Cao ◽  
Yuanxiao Li
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Total Solid ◽  
Milk Composition ◽  
Economic Benefits ◽  
Economic Effectiveness ◽  
Control Group ◽  
Apparent Digestibility ◽  
Cell Counts ◽  
Holstein Dairy Cows

Abstract The aim of the present study was to evaluate the effects of reducing dietary crude protein (CP) levels and supplementing rumen-protected methionine (RPM) on production, apparent digestibility of nutrients and economic effectiveness of lactating Holstein cows. A total of 96 (60 ± 7 d in milk; 34.39 ± 5.74 kg/d of milk production; mean ± SD) lactating Holstein dairy cows were randomly assigned to 1 of 2 treatments: diet containing 17.3% CP without RPM (control group; CON); diet containing 16.4% CP with supplementing 15.0 g/d of RPM (treatment group; RPM). All the data were analyzed using one-way analysis of variance (ANOVA) of SAS (SAS version 9.2, SAS Institute Inc., Cary, NC.). No effects were observed of reducing dietary CP on somatic cell counts, milk yield and milk composition including fat, protein, lactose, total solid, solids-not-fat and milk urea nitrogen. The total apparent digestibility of nutrients was similar between treatments, while RPM group had higher calcium digestion (44.24% vs. 42.75% ± 10.13%) and phosphorus digestion (48.50% vs. 45.96% ± 12.90%) numerically. In addition, supplying the diet of 16.4% CP with RPM supplementation to cows could reduce feeding cost by 0.5 $/d per cow and boost net profits. In conclusion, lower dietary CP with RPM supplementation did not limit milk yield, milk composition and apparent digestibility of nutrients, and also could improve the economic benefits of the dairy farms.

scholarly journals Effects of Supplementing Rumen-Protected Methionine on Production Performance, Apparent Digestibility, Blood Parameters, Ruminal Metabolites and Economic Effectiveness in Lactating Holstein Dairy Cows

2021 ◽  
Author(s):  
Jialin Wei ◽  
Mengying Dou ◽  
Shuai Liu ◽  
Bichuan Yan ◽  
Cuiyu Li ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Crude Protein ◽  
Blood Parameters ◽  
Milk Composition ◽  
Economic Effectiveness ◽  
Production Performance ◽  
Apparent Digestibility ◽  
Holstein Dairy Cows

Abstract Background: Because of disadvantages of excessive dietary crude protein (CP), decreasing dietary CP of dairy cows has attracted the worldwide attention. Rumen protected methionine (RPM) supplementation can allow lower CP diets and is beneficial to milk production performance, N efficiency of cows and environment. The aim of this study was to evaluate the effects of reducing dietary CP and supplementing RPM on production, digestibility of nutrients, blood parameters, ruminal metabolites and economic effectiveness in lactating Holstein dairy cows. Results: A total of 96 lactating cows (63 ± 25 d in milk; 34.4 ± 5.74 kg/d of milk production; mean ± SD) were randomly assigned to 1 of 2 treatments: diet containing 17.3% CP without RPM (control group; CON; n = 49); diet containing 16.4% CP with supplementing 15.0 g/d of RPM (treatment group; RPM; n = 47). No effect was observed of reducing dietary CP on milk yield and milk composition. The apparent digestibility of nutrients was similar between treatments. The results related to blood showed that cows in RPM group exhibited lower concentration of blood urea nitrogen than that in CON group (P < 0.001). Moreover, there were no differences between treatments on concentrations of aspartate transaminase, alanine transaminase, alkaline phosphatase, globulin and albumin. In ruminal metabolites, microbial crude protein (MCP) of dairy cows in RPM group was higher compared with CON group (P = 0.006). Ruminal volatile fatty acid (VFA) contents were not changed by treatments except that the concentrations of butyrate and isovalerate of RPM group were higher than that of CON group at 2 h after feeding (P < 0.05). In addition, supplying the diet of 16.4% CP with RPM supplementation to cows could reduce feeding cost by 0.5 $/d per cow and boost net profits. Conclusions: Lower dietary CP with RPM supplementation did not limit milk yield, milk composition and apparent digestibility of nutrients, and could improve nitrogen utilization of dairy cows and synthesis of MCP in rumen, change VFA production at 2 h after feeding, as well as boost the economic benefits of the dairy farms.

scholarly journals Effects of Paper Mulberry Silage on the Milk Production, Apparent Digestibility, Antioxidant Capacity, and Fecal Bacteria Composition in Holstein Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1152
Author(s):  
Yangyi Hao ◽  
Shuai Huang ◽  
Jingfang Si ◽  
Jun Zhang ◽  
Naren Gaowa ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dry Matter ◽  
Control Group ◽  
Fecal Bacteria ◽  
Apparent Digestibility ◽  
Dry Matter Digestibility ◽  
Holstein Dairy Cows

Paper mulberry (Broussonetia papyrifera; PM) is an excellent and extensive type of roughage in Asia. This study aimed to evaluate the effects of PM silage on the milk production, apparent digestibility, antioxidant capacity, and fecal bacteria composition in Holstein dairy cows. Forty-five lactating Holstein dairy cows with a similar milk yield and parity were selected and randomly assigned to three groups. The control group was fed a non-PM silage diet, and the PM-treated groups were fed 4.5 and 9.0% PM silage supplementary diets for 28 days. Then, treatment groups were fed diets containing 13.5 and 18.0% PM silage for the next 28 days, respectively. PM silage increased the milk urea nitrogen and decreased the somatic cell count (p < 0.05), but did not affect the dry matter intake, milk yield, apparent digestibility, and energy balance of dairy cows. PM silage can enhance the blood total antioxidant capacity, superoxide dismutase, and immune globulin content (p < 0.05). The PM silage significantly decreased the relative abundance of the genera Ruminococcaceae UCG-013 and Tyzzerella-4 (p < 0.05). In conclusion, PM silage enhanced the antioxidant capacity and immunity of dairy cows, but did not influence the milk yield, dry matter digestibility, and fecal bacteria composition.

scholarly journals Effects of dietary betaine on milk yield and milk composition of mid-lactation Holstein dairy cows

2012 ◽  
Vol 95 (11) ◽  
pp. 6557-6562 ◽  
Author(s):  
S.E. Peterson ◽  
P. Rezamand ◽  
J.E. Williams ◽  
W. Price ◽  
M. Chahine ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Milk Composition ◽  
Holstein Dairy Cows

Effect of different sources of supplemental protein on performance and on ruminal pH and NNH3of Holstein dairy cows

2009 ◽  
Vol 2009 ◽  
pp. 153-153
Author(s):  
H Gholizadeh ◽  
A Naserian ◽  
R Valizadeh ◽  
A Tahmasebi ◽  
M Sari
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Rumen Fluid ◽  
Milk Composition ◽  
Tannin Content ◽  
Ruminal Ph ◽  
Ruminant Animals ◽  
Supplemental Protein ◽  
Different Sources ◽  
Holstein Dairy Cows

Pistachio hull (PH) is the main pistachio by-product produced from the pistachio dehulling process. The product consists of 12.7, 5.7, 16.6, 25, and 20% ash, EE, CP, NDF, and ADF, respectively and can be used as a feedstuff for ruminant animals. It is a mount of energy, fibre and potassium (Naserian and Vahmani, 2005). Because its constitutive tannin content can bind protein and cellulose, it was hypothesized that PH tannin can decrease the digestibility of protein. There is no clear consensus amongst researchers on the effect of dried pistachio by product on milk yield, milk composition, rumen fluid pH and N-NH3concenteration. The main objective of this experiment was to evaluate effects of different sources of supplemental protein with dried pistachio by product on milk yield, milk composition rumen fluid pH and N-NH3concenteration of dairy cows.

scholarly journals Evaluation of Milk Yield and Milk Composition of Honamlı Goats

2021 ◽  
Vol 72 (1) ◽  
pp. 2747
Author(s):  
AA AKBAŞ ◽  
F TAŞÇI ◽  
Ö ELMAZ ◽  
M SAATCI
Keyword(s):  
Somatic Cell ◽  
Milk Yield ◽  
Freezing Point ◽  
Total Solid ◽  
Milk Composition ◽  
Lactation Period ◽  
Freezing Point Depression ◽  
Total Solids ◽  
Somatic Cell Counts ◽  
Cell Counts

The aim of this study was to determine the milk yield and milk composition (total solids, fat, protein and lactose), freezing point depressionand somatic cell counts of Honamlı goat during second lactationin Turkey. The animal material of the study consisted of a total of 30 goat. Total milk yield was detected by using Fleischmann’s method. Milk composition was analyzed by Bentley 150, and somatic cells were counted by Bentley Somacount FC. One-way ANOVA was used to determine the effect of lactation stages on milk yield and milk composition. In the study, mean lactation period and lactation milk yield of Honamlı goat were detected as 202.4 days, and 92.6 kg, respectively. The percentages of fat, protein, lactose, total solid, freezing point depression, and somatic cell counts /mL of milk were 2.4%, 4.2%, 5.1%, 12.7%, -0.57 °C, 82.8 and 2.9%, 4.2%, 4.7%, 12.7%, -0.59 °C, 483 on the 60th and 120thlactation day respectively. Total solids, fat, and protein values significantly increased especially towards the end of lactation (P <0.05). Lactose value decreased slowly from the beginning to the end of lactation. The somatic cell counts increased in milk particularly at the end of lactation (P < 0.05). The freezing point depression remained stable throughout lactation. It was thought that results of study were important representing the second lactation milk production of Honamlı goats that is one of the native goat breeds of Turkey.

A note on the inclusion of the antibiotic Actaplanin in the diets of lactating dairy cows

1989 ◽  
Vol 49 (2) ◽  
pp. 323-326
Author(s):  
M. M. Abubakar ◽  
P. Rowlinson
Keyword(s):  
Body Weight ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Composition ◽  
Blood Metabolites ◽  
Glycopeptide Antibiotics ◽  
Nonsignificant Increase ◽  
Cell Counts ◽  
Lactating Dairy Cows ◽  
Condition Score

Actaplanin, a complex of glycopeptide antibiotics produced by Actinoplanes missouriensis, was investigated as a performance enhancer when incorporated in the diet of lactating dairy cows at the rate of 960 mglday. In a trial with autumn-calving cows over two successive lactations, the milk yield of animals given diets incorporating Actaplanin (no. = 132 lactations) showed only a small (proportionately +0·038), nonsignificant increase in milk yield over the controls (no. = 121 lactations). Overall, there were no significant differences in milk composition, cow body weight or condition score changes, mastitis cell counts or in the majority of blood metabolites.

The effect of the replacement of grass silage by increasing proportions of urea-treated whole-crop wheat on food intake and apparent digestibility and milk production by dairy cows

1997 ◽  
Vol 65 (3) ◽  
pp. 343-351 ◽  
Author(s):  
J. D. Sutton ◽  
A. L. Abdalla ◽  
R. H. Phipps ◽  
S. B. Cammell ◽  
D. J. Humphries
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Water Intake ◽  
Milk Composition ◽  
Yield Response ◽  
Apparent Digestibility ◽  
Water Excretion ◽  
Grass Silage ◽  
Whole Wheat ◽  
The Difference

AbstractSix Holstein-Friesian cows in mid lactation were used to examine the effects of replacing increasing proportions of grass silage (GS) by whole-crop wheat (WCW) in the diet of lactating dairy cows. Grass silage was a first-cut perennial ryegrass. The WCW was harvested at 645 g dry matter (DM) per kg and was preserved with either 20 (WCW-20) or 40 (WCW-40) kg urea per t DM. The diets were 6 kg DM dairy concentrate daily with one of six forage treatments offered ad libitum. The forage treatments were GS alone, GS with either WCW-20 or WCW-40 in a 2:1 DM ratio, GS with either WCW-20 or WCW-40 in a 1:2 DM ratio, or WCW-40 alone. The experiment consisted of an incomplete change-over design with three 4-week periods. DM intakes were highest with the mixtures (P < 0·05) but milk yield was not significantly affected by the treatments although it tended to be highest with the 1:2 ratio. Milk composition responses were generally small and non-significant, but yields of fat and protein were highest with the mixtures (P < 0·05). The apparent digestibility of DM and organic matter (OM) decreased linearly (P · 0·01) with increasing WCW inclusion but digestible DM and OM intakes were not significantly affected. Apparent digestibility of neutral-detergent fibre tended to be lower with the forage mixtures (quadratic P < 0·20). Apparent digestibility of starch was higher with GS than with diets containing WCW and decreased linearly with diets containing increasing proportions of WCW (P < 0·01). Intakes of starch and digestible starch rose with increasing WCW inclusion but so also did faecal starch output such that 0·75 kg starch per day was excreted on WCW-40 alone. Water intake from food and water excretion in urine decreased linearly with increasing WCW inclusion but water excretion in faeces and milk was not significantly affected by diet. The difference between measured water intake and output (water deficit) increased from 38 kg/day on GS alone to 58 kg/day on WCW-40 alone (linear P < 0·001). The only effects of level of urea treatment were to increase milk urea concentration (P < 0·05). It is concluded that the small size of the milk yield response to the increased forage intake obtained when up to two-thirds of the GS is replaced by WCW is due to the reduced digestibility of the OM and particularly of the starch component resulting from the egestion of whole wheat grains in the faeces.

scholarly journals PSXIII-32 Effects of rumen-protected niacin on dry mater intake, rumination, and milk production in multiparous Holstein dairy cow during transition period

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 365-366
Author(s):  
Naren Gaowa ◽  
Erdan Wang ◽  
Shengli Li ◽  
Zhijun Cao ◽  
Yachun Wang ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Transition Period ◽  
Control Diet ◽  
Negative Energy ◽  
Control Group ◽  
Holstein Dairy Cow ◽  
Experimental Stage ◽  
Holstein Dairy Cows

Abstract The dairy cows decrease dry mater intake (DMI) before calving and are frequently in negative energy balance after calving. The objective of this study was to investigate the effect of rumen-protected niacin (NA) on DMI, rumination, and milk production in multiparous Holstein dairy cows during transition period. Eighteen multiparous Holstein dairy cows were allocated into 3 groups: (1) control diet (Con; n = 6), not supplemented with NA, (2) supplemented diet 1 (NA1; supplemented with 20 g NA/cow daily, n = 6), and (3) supplemented diet 2 (NA2; supplemented with 40 g NA/cow daily, n = 6). Experimental stage was from 49 d before calving until 21 d after calving. Daily TMR intake was monitored by Roughage Intake Control System, and daily rumination time was monitored by Hr-Tag rumination monitoring system and milk yield was recorded every day after calving. Blood samples were collected on d -49, -35, -21, -14, -7, 1, 3, 7, 14, 21, and 28 relative to parturition for quantifying concentrations of neuropeptide Y (NPY) and orexin A (OXA). The 20 g/day NA feeding increased DMI during transition period (P &lt; 0.05). The concentrations of NPY and OXA, which are the intake related hormones, were significant higher in NA1 than the other two groups in the first two weeks after calving (P &lt; 0.05). Moreover, the daily rumination time in NA1 was significantly higher than the control group from two weeks before calving to the first week after calving (P &lt; 0.01). The 20 g/day NA feeding significantly increased milk yield (P &lt; 0.05) compared to control group in early lactation. Overall, our study demonstrated that 20 g/day NA feeding could improve DMI and production in fresh cows, while those improvements were not detected with 40 g/day NA feeding.

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