The effect of Sodium Bicarbonate and Liquid Buffer on Milk Yield, Milk Composition and Blood Metabolites of 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.

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

Journal of Animal Science ◽

10.1093/jas/skab235.292 ◽

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.

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

10.21203/rs.3.rs-526624/v1 ◽

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.

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Effects of Sodium Bicarbonate, Magnesium Oxide and Dried Sugar Beet Pulp in Diets of Dairy Cows on Milk Yield, Milk Composition and Rumen Fluid and Some Blood Parameters

Journal of Animal and Veterinary Advances ◽

10.3923/javaa.2010.1570.1574 ◽

2010 ◽

Vol 9 (11) ◽

pp. 1570-1574 ◽

Cited By ~ 3

Author(s):

Oktay Kaplan ◽

Suphi Deniz ◽

M. Akif Karsl ◽

Huseyin Nursoy ◽

Mehmet Avci

Keyword(s):

Sugar Beet ◽

Sodium Bicarbonate ◽

Dairy Cows ◽

Magnesium Oxide ◽

Milk Yield ◽

Rumen Fluid ◽

Blood Parameters ◽

Milk Composition ◽

Sugar Beet Pulp ◽

Beet Pulp

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Effects of substitution barley grain with dried citrus pulp on performance of Holstein dairy cows

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200020937 ◽

2007 ◽

Vol 2007 ◽

pp. 190-190

Author(s):

J. Bayat ◽

R. J. Valizadeh ◽

F. Eftekhari Shahroudi ◽

A. A. Naserian ◽

A. Tahmasebi ◽

...

Keyword(s):

Dairy Cows ◽

Milk Yield ◽

Citrus Fruit ◽

Milk Composition ◽

Barley Grain ◽

Rich Source ◽

Blood Metabolites ◽

Citrus Pulp ◽

Juice Extraction ◽

Ruminant Animals

Dried citrus pulp (DCP) as a by-product from juice extraction of citrus fruit can be used as a feedstuff for ruminant animals (Belbaskis and Tsirgogianni, 1996). The DCP is composed of peel, inside portions, and culled fruits of the citrus family (e.g., orange, lemons, and grapefruit). The DCP is a pectin-rich bulky concentrate that is rich source of energy, fibre and calcium, but poor in CP and phosphorous. There is a different of opinion among researchers about the effect of DCP on milk yield, milk composition and blood metabolites components. The main objective of this experiment was to evaluated effects replacement of dried citrus pulp with barley grain on milk yield, milk composition and blood metabolites of dairy cows.

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

Animal Science ◽

10.1017/s0003356100032475 ◽

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.

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