scholarly journals Evaluation of milk quality from dairy cows fed maize (Zea mays) stover treated with chopped and mineralized groundnut (Arachis hypogea) and soybean (Glycine max) stover

2022 ◽  
Vol 13 (1) ◽  
pp. 102-114
Author(s):  
Chisowa DM ◽  
Mpofu, I DT ◽  
Daura MT ◽  
Syampaku EM
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Nutritive Value ◽  
Milk Quality ◽  
Arachis Hypogea ◽  
Protein Levels ◽  
Lactating Dairy Cows ◽  
Density Values ◽  
Feeding Trials

This study evaluated the effect of upgrading the quality of maize stover (MS) on milk nutritive value. The study involved feeding MS improved using urea (U), chopped groundnut stover (cGS), chopped soybean stover (cSS), mineralized groundnut stover solution (mGS) and mineralized soybean stover solution (mSS) to lactating dairy cows. The feeding trial involved twelve (12) dairy cows in their second parity. Effect of supplementation with MS improved with U, cGS, cSS, mGS and mSS on milk quality was evaluated following on-station feeding trials. The study involved 22 factorial experiments within a Completely Randomised Design (CRD). Milk samples were analysed for protein, lactose, fat and solid not fat (SNF). Mean milk protein levels ranged from 3.52mg/ml to 3,73mg/ml (s.e=0.03) for milk from cows fed on MS improved using cGS and mGS respectively. Protein and Lactose were observed to be the least variable (3.64g/ml ±0.12, and 5.24g ±0.24 respectively). Average milk fat content was highest (4.78%, se=0.52) in milk from cows fed on UET treated MS and lowest (3.43%, se=0.52) in milk from cows fed on gGS protein based MS. Within legume type milk fat was higher(4.75%±1.99) in milk from cows fed on MS blended with mGS than that in milk from cows fed on MS improved with cGS (3.43%±1.99). Similar result was observed in milk fat from cows fed on MS improved with the use of soybean. Lactose in milk from cows fed on UET treated MS was highest (5.51g, se=0.061) and lowest (5.10g, se=0.061) in milk from cows fed on MS blended with cGS. Milk from cows fed on MS improved with mGS was higher (9.61p/cwt, se=0.14) in SNF and lowest (8.88p/cwt, se=0.14) in milk from cows fed on MS with cGS. The milk density values ranged from 32.65sg, se=0.53 for milk from cows fed on UET treated MS to 30.42sg, se=0.053 for milk from cows fed on MS blended with cGS. Milk components were higher when cows were fed on MS improved using mineralized legume stover solutions.

Influence of Feeding Dehydrated Poultry Waste on Composition and Organoleptic Quality of Milk1

1977 ◽  
Vol 40 (1) ◽  
pp. 29-31 ◽  
Author(s):  
J. C. BRUHN ◽  
G. D. REIF ◽  
H. TOONE ◽  
J. H. EVANS
Keyword(s):  
Dairy Cows ◽  
Milk Quality ◽  
Poultry Waste ◽  
Quality Factors ◽  
Lactating Dairy Cows ◽  
Period 2 ◽  
Lead Zinc ◽  
Copper Lead ◽  
Composite Samples

A double reversal trial with three, 4-week periods was used to determine the effect on milk quality of feeding dehydrated poultry waste to lactating dairy cows. Fifteen cows were fed a control ration for 4 weeks (Period 1), followed by an experimental ration containing dehydrated poultry waste for 4 weeks (Period 2), and then by the control ration for 4 weeks (Period 3). Milk was collected daily and scored by five judges using the ADSA milk flavor scoring guide. Milk compsition (fat, protein, lactose, and solids-not-fat) was determined on alternate days. During Periods 2 and 3 weekly composite samples were collected to determine concentrations of cadmium, copper, lead, zinc, and tocopherol. No significant differences were found in any of the milk quality factors studied.

scholarly journals Effect of feeding extruded flaxseed on milk quality of dairy cows

2011 ◽  
Vol 27 (3) ◽  
pp. 329-334
Author(s):  
G. Biagi ◽  
M. Fustini ◽  
G. Canestrari ◽  
A. Palmonari ◽  
N. Panciroli ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Milk Quality ◽  
Adaptation Period ◽  
Omega 3 ◽  
Effect Of Feeding

Aim of the present study was to evaluate the effect of feeding dairy cows with extruded flaxseed (EF) on milk quality. After a 7-d adaptation period, 40 Holstein dairy cows in midlactation were divided in two experimental groups, based on parity, milk yield and composition, and days in milk. Animals were fed for 28 d a standard total mixed ration containing or not (control) 1.8 kg/cow/d of a supplement based on extruded flaxseed (EF). Milk yield was recorded daily and individual milk samples were collected weekly for analysis. Milk yield was not affected by treatment and averaged 26.2 kg/d throughout the study. Feeding EF reduced milk fat (3.95 vs. 4.24%; P=0.053) and tended to reduce milk protein (3.32 vs. 3.50%; P=0.104). The milk from cows fed EF contained more (P<0.01) stearic (12.0 vs. 7.8 mg/100 mg of fat), oleic (21.2 vs. 18.0 mg/100 mg of fat), ?-linolenic (0.85 vs. 0.41 mg/100 mg of fat) and vaccenic (1.43 vs. 0.62 mg/100 mg of fat) acids than control and also more c9,t11 CLA (0.91 vs. 0.59 mg/100 mg of fat). Conversely, compared with control, feeding EF reduced milk concentrations of palmitic acid (26.5 vs. 33.4 mg/100 mg of fat; P<0.01). The present results show that feeding EF to dairy cows is an efficient strategy to enrich milk in beneficial fatty acids such as vaccenic acid, CLA and omega-3 fatty acids. Nevertheless, the milk fat reducing effect of flaxseed as well as other sources of polyunsaturated fatty acids should be taken into account.

Nutritive value for lactating dairy cows of the pressed herbage remaining after the partial extraction of leaf juice

1981 ◽  
Vol 21 (111) ◽  
pp. 376 ◽  
Author(s):  
CR Stockdale ◽  
KR King ◽  
DR McKenzie
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Nutritive Value ◽  
Protein Extraction ◽  
Significant Loss ◽  
In Vitro Digestibility ◽  
Lactating Dairy Cows ◽  
Partial Extraction

A series of six experiments compared the production of lactating dairy cows eating either fresh herbage or the pressed herbage remaining after the partial extraction of juice. Irrigated perennial pasture and irrigated lucerne (Medicago sativa) were used in different experiments. With forage-harvested pasture, extraction removed an average of 42.1 g of protein per kg dry matter (DM) of pasture processed. An average of 85% of the DM of the original fresh pasture was left as pressed pasture. The process lowered the in vitro digestibility, total nitrogen, and cell contents of the herbage, and raised the cell wall constituents. It also reduced herbage phosphorus, potassium, magnesium and sodium, but increased herbage calcium slightly. The milk yield of cows fed an equivalent DM intake of pressed residue was, on average, 6% lower than the milk yield of cows fed fresh pasture. The responses shown by the milk constituents were inconsistent. With lucerne, extraction removed an average of 95.9 g of protein from each kg of fresh herbage and an average of 74% of the lucerne was left as pressed lucerne. This reduced the quality of the pressed residue as determined by in vitro digestibility (5%), Kjeldahl nitrogen (19%) and neutral detergent fibre (27%). However, there was no significant loss of production for cows on the pressed herbage, although there were small differences. It is concluded that lucerne would appear to have the greater potential for a leaf protein extraction industry in the irrigated areas of the Goulburn Valley of Victoria.

scholarly journals Effects of different amounts of crude glycerol supplementation on dry matter intake, milk yield, and milk quality of lactating dairy cows grazing on a Kikuyu grass pasture

2021 ◽  
Vol 12 (4) ◽  
pp. 491-497
Author(s):  
Diana Marcela Valencia E ◽  
Luis Alfonso Giraldo ◽  
Alejandra Marin ◽  
Yury Tatiana Granja Salcedo ◽  
Telma Teresinha Berchielli
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Crude Glycerol ◽  
Milk Quality ◽  
Dry Matter Intake ◽  
Lactating Dairy Cows ◽  
Kikuyu Grass

scholarly journals YIELD AND NUTRITIVE VALUE OF CORN, BARLEY, WHEAT, AND FORAGE OATS AS SILAGE FOR LACTATING DAIRY COWS

1973 ◽  
Vol 53 (2) ◽  
pp. 245-250 ◽  
Author(s):  
P. L. BURGESS ◽  
J. W. G. NICHOLSON ◽  
E. A. GRANT
Keyword(s):  
Body Weight ◽  
Dairy Cows ◽  
Milk Production ◽  
Dry Matter ◽  
Nutritive Value ◽  
Corn Silage ◽  
Lactating Dairy Cows ◽  
Feeding Value ◽  
Feeding Trials ◽  
Dough Stage

Whole crops of corn, barley, wheat, and forage oats were ensiled and fed as the sole forage to 48 milking cows in two 12-wk feeding trials. In the first experiment corn (25.1% dry matter (DM)) harvested in the early dent stage, barley (34.2% DM), and forage oats (27.6% DM) harvested in the dough stage were compared. Holstein cows fed the three silages averaged 22.6, 19.7, and 18.7 kg of 4% fat-corrected milk per day and consumed 1.67, 1.82, and 1.85 kg of silage DM per 100 kg body weight, respectively. In the second experiment, cows fed wheat (35.7% DM), barley (29.8% DM), or forage oat (27.0% DM) silage harvested in the dough stage produced 21.2, 23.3, and 22.1 kg fat-corrected milk daily and consumed 1.75, 1.71, and 1.62 kg silage DM per 100 kg body weight, respectively. Corn silage DM intake was lower (P < 0.01) but more efficiently utilized for milk production (P < 0.01) than barley or forage oats, whereas wheat, barley, and forage oat silages were similar in feeding value. In experiment I, rumen acetate increased and butyrate decreased with corresponding increases in forage fiber content. Propionate levels were unaffected by the kind of forage, whereas blood urea nitrogen was highest for cows fed forage oats in both experiments.

scholarly journals Some compositional and health indicators of milk quality of dairy cows with higher milk yield at including of selected corn species into feeding ration

2008 ◽  
Vol 56 (5) ◽  
pp. 171-180 ◽  
Author(s):  
Jan Pozdíšek ◽  
Oto Hanuš ◽  
Kateřina Vaculová ◽  
František Mikyska ◽  
Jaroslav Kopecký ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Nutritive Value ◽  
Geometric Mean ◽  
Health Indicators ◽  
Specific Weight ◽  
Milk Quality ◽  
Control Group ◽  
Wheat Group

Because of economical reasons the substitution of maize by feed corn as wheat (Sulamit) and triticale (Kitaro) was revolved in concentrate part of dairy cow feeding rations. The design of mentioned replacement in feeding rations was carried out according to results of previous research (Pozdíšek and Vaculová, 2008) for nutrition experiment. The aim of this paper was to evaluate the possible effects of corn replacement in cow feeding rations on milk composition and properties. The expressively different variants of corn were selected for experiment in comparison to maize (reference). Dairy cows were fed by total mixed ration on the basis of maize and clover silage and hay. Otherwise the identical day feeding rations among cow groups differed only in concentrate portions ((K, control group) maize 1.5 kg, wheat (P1) 2.0 kg and triticale (P2) 2.0 kg (experimental groups)). Group feeding rations 1 (K), 2 (P1) and 3 (P2) had: NEL/kg dry (DM) matter (6.524, 6.512 and 6.491); NL % in DM (17.9, 18.2 and 17.9); fibre % in DM (15.96, 15.74 and 15.72); PDIN/PDIE (1.189, 1.189 and 1.191). The experiment took six weeks, there were included 8, 9 and 9 cows (n = 26) of Czech Fleckvieh breed. Feed groups were well balanced in terms of milk yield, days in milk and number of lactation. The tie stable and pipeline milking equipment were used in experiment. Animals were milked twice a day and sampled at morning milking in intervals about seven days approximately. Cows were relatively healthy in terms of occurrence of milk secretion disorders. Within groups the individual milk samples (in total 182 in experiment) were aggregated into bulk samples (n = 21 = 3 groups × 7 sampling periods), which were analysed on 45 milk indicators, 18 of them were evaluated in this paper. The differences in milk yield were significantly advantageous for K group (15.32 > 14.07 (wheat) or 13.86 kg (triticale) at morning milking), while fat (3.27 < 3.47 or 3.44 %) was lower (P < 0.05). Lactose was not influenced. More important differences were in total dry matter, 12.09 (K) < 12.23 (P1) or 12.40 % (P2). While for wheat was not for triticale was similar effect observed in crude protein (CP) of milk (3.08 (K) or 3.05 (P1) < 3.23 % (P2)). Similar trend was also confirmed in casein (CAS; 2.43 or 2.44 < 2.55 %; from P < 0.05 to P < 0.001 for CP and CAS). There were insignificant differences between groups for casein number, pH acidity, electrical conductivity, Mg and Cu (P > 0.05). Milk specific weight was lowest in P1 (P < 0.01), but this indicator is practically less important. More expressive differences were in somatic cell count (SCC) in geometric mean 249 (P2) > 76 (K) or 72 103/ml (P1). Because of quite typical high SCC variability in tri­ti­ca­le P2 group (in opposite to this low variability in K and P1 groups) it could be caused by chance in animal selection for groups and all values met the standard demand for extra quality of milk. Therefore, it is not necessary to over estimate this result. Milk urea as metabolical indicator was higher in wheat group, significantly (P < 0.05) versus triticale group (23.39 (P1) > 20.80 (K) and 20.50 mg / 100ml (P2), but all values lay in respected physiological range (from 20 to 30 mg / 100ml). In the Ca case it was significantly higher (P < 0.05 versus wheat) in triticale milk group by 5.7 and 4.0 % (1306 (P2) > 1231 (K) or 1253 (P1) mg / kg). This increase could be interested in terms of milk nutritive value, but not for routine milk payment. The levels of P and Fe in milk were higher in K versus experimental groups (P < 0.05). It is less interesting in terms of economy or nutrition. In general milk was a little different according to differences in corn portions of cow feeding rations and corn variant replacement. In terms of experiment the concrete corn replacement in concentrate portion of feeding ration could not have an essential impact on milk quality and it si possible to agree with such conception. However, the milk quality and yield were not overcome by replacement of maize by wheat (Sulamit) or triticale (Kitaro). At triticale the lower milk yield was compensated by higher levels of DM, fat, CP, CAS, Ca and also SCC as compared to maize and wheat. The used corn replacement variants were not expressively worse than maize.

scholarly journals THE IMPACT OF BALANCED ENERGY AND PROTEIN SUPPLEMENTATION TO MILK PRODUCTION AND QUALITY IN EARLY LACTATING DAIRY COWS

2016 ◽  
Vol 41 (2) ◽  
pp. 83-90 ◽  
Author(s):  
W. P. Widyobroto ◽  
R. Rochijan ◽  
I. Ismaya ◽  
A. Adiarto ◽  
Y. Y. Suranindyah
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Basal Diet ◽  
Total Solid ◽  
Protein Supplementation ◽  
Lactating Dairy Cows ◽  
Quality Of Milk ◽  
The Impact

This research was aimed to determine the impact of balanced energy and protein supplementation with high rumen undegraded protein (HRUP) to milk production and quality in early lactating dairy cows. Twelve early lactating Friesian Holstein cows were divided into two groups (control and HRUP). Both control and HRUP group were fed on a basal diet (forage to concentrate ratio was 60:40; DM basis), with rumen undegraded protein (RUP) levels were 27.47% and 32.78% for control and HRUP, respectively. The experimental diets were given to animals twice daily, morning and afternoon. Water was given by ad libitum. The observed parameters were nutrient intake, quantity and quality of milk production . Data were examined using t-test. Results showed that feed intake, milk production and 4% FCM, milk fat and lactose concentrations, and milk solid non-fat and total solid concentrations were not differed significantly between control and HRUP groups. However, milk protein concentration and production were differed (P

scholarly journals Influence of Dietary Fish Oil on Conjugated Linoleic Acid and Other Fatty Acids in Milk Fat from Lactating Dairy Cows

2000 ◽  
Vol 83 (11) ◽  
pp. 2620-2628 ◽  
Author(s):  
D.C. Donovan ◽  
D.J. Schingoethe ◽  
R.J. Baer ◽  
J. Ryali ◽  
A.R. Hippen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Fish Oil ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Lactating Dairy Cows ◽  
Dietary Fish

The effect of compound composition and silage characteristics on silage intake, feeding behaviour, production of milk and live-weight change in lactating dairy cows

1991 ◽  
Vol 52 (1) ◽  
pp. 11-19 ◽  
Author(s):  
D. A. Jackson ◽  
C. L. Johnson ◽  
J. M. Forbes
Keyword(s):  
Dairy Cows ◽  
Weight Change ◽  
Milk Fat ◽  
Feeding Behaviour ◽  
Dry Matter ◽  
Live Weight ◽  
Productive Performance ◽  
Lactating Dairy Cows ◽  
Principal Energy ◽  
Friesian Cows

ABSTRACTAn experiment was carried out to investigate the effects of compound composition and silage characteristics on silage intake, feeding behaviour and productive performance of dairy cows during the first 25 weeks of lactation. Over a period of 3 years, 36 lactating British Friesian cows (12 per year), in their third or later lactations, were divided into two groups. The cows in each group received either compound S, in which the principal energy source was cereal starch, or compound F containing a mixture of high quality digestible fibre. Cows given compound F ate 2·2 kg more silage dry matter per day (P < 0·05). The type of compound had no effect on the frequency of silage feeding and the time spent eating was significantly different only over weeks 10 to 25 of lactation (P < 0·05), with cows on compound F spending on average 20 min longer feeding per day. Cows on compound F produced 1·7 kg more milk per day than cows on compound S. Although there were no significant differences in the concentration of milk constituents, compound F was associated with higher yields of milk constituents. Significant differences were found between the years of experiment in the frequency of feeding (P < 0·05) and also in the concentration of milk protein and milk fat. There were no significant differences in the magnitude of live-weight change between treatments or year of experiment.

Persian clover and maize silage. III. Rumen fermentation and balance of nutrients when clover and silage are fed to lactating dairy cows

1994 ◽  
Vol 45 (8) ◽  
pp. 1783 ◽  
Author(s):  
CR Stockdale
Keyword(s):  
Zea Mays ◽  
Dairy Cows ◽  
Milk Fat ◽  
Maize Silage ◽  
Lactating Dairy Cows ◽  
Degradation Rates ◽  
Persian Clover ◽  
Yield Responses ◽  
Trifolium Resupinatum

Six rumen fistulated dairy cows, at various stages of lactation, were housed in metabolism stalls on a total of nine occasions in three experiments in which various combinations of Persian clover (Trifolium resupinatum) and maize (Zea mays) silage were offered. These experiments considered some aspects of digestion of Persian clover and Persian clover/maize silage diets in order to understand the good milk yield responses attributed to maize silage measured in previous research. Rumen ammonia concentrations and nylon bag degradation rates suggested that the cows made better use of one or both feeds when Persian clover and maize silage were offered together than they did when Persian clover was offered alone. While Persian clover and maize silage appeared to be a substantially inferior diet in terms of apparent in vivo digestibility coefficients and availability of nutrients when compared with Persian clover offered alone, milk yields were unaffected. In addition, no matter how much maize silage was offered, milk fat content remained constant. These results were attributed to an improved balance of absorbed nutrients.

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