scholarly journals Efecto de la frecuencia diaria de ordeño sobre la producción y composición de la leche y el estado sanitario de la ubre en ovejas de la raza Assaf: interacción con el nivel de producción y el aporte de vitamina E y selenio = Effect of milking frecuency on milk yield, milk composition and udder health in assaf ewes: interaction with the level of production and vitamin E and selenium supplementation

2017 ◽  
Author(s):  
Edgar Eduardo Pulido Chávez
Keyword(s):  
Vitamin E ◽  
Milk Yield ◽  
Milk Composition ◽  
Selenium Supplementation ◽  
Udder Health

Effects of dietary supplements of zinc-methionine on milk production, udder health and zinc metabolism in dairy goats

2003 ◽  
Vol 70 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Ahmed AK Salama ◽  
Gerardo Caja ◽  
Elena Albanell ◽  
Xavier Such ◽  
Ramón Casals ◽  
...  
Keyword(s):  
Milk Yield ◽  
Milk Composition ◽  
Barley Grain ◽  
Zinc Metabolism ◽  
Dairy Goats ◽  
Protein Nitrogen ◽  
Udder Health ◽  
Concentrate Mixture ◽  
True Protein ◽  
Organic Zn

Twenty-two Murciano-Granadina dairy goats were used to investigate the effects of organic Zn supplementation of a diet containing a high level of inorganic Zn. Goats were kept in pens, machine milked once a day throughout lactation and fed a diet based on a dehydrated mixture of whole-plant maize and alfalfa ad libitum, alfalfa pellets, barley grain and a concentrate mixture. Treatments were: (1) control, and (2) supplemented with 1 g/d Zn-Methionine (Zn-Met) included in the concentrate mixture. After parturition, goats were blocked in week 3 and dietary treatments were applied until week 23. From weeks 3–20, feed intake, milk yield, milk composition, milk somatic cell count (SCC), and udder health were measured. In week 21, all goats were injected intraperitoneally with 1 g/d DL-methionine for 5 d to establish the effects of methionine under the conditions of udder stress induced by hand milking on the second day. During weeks 22 and 23, diet digestibility, and N and Zn balance were determined. Dry matter intake, milk yield, and milk contents of total solids, fat, total and true protein, and casein did not differ between treatments, but whey protein and non-protein nitrogen contents were significantly lower for the Zn-Met group. Milk SCC tended to decrease as a result of Zn-Met supplementation but differences between treatments were not significant when halves with persistent infection were excluded. Hand milking increased SCC in both groups, but udders of supplemented goats showed a lower reaction. Apparent absorption of N significantly increased and Zn retention tended to increase in Zn-Met supplemented goats. We conclude that Zn-Met supplementation can enhance resistance to udder stress in dairy goats. Effects were attributed to the organic Zn and not to the methionine component. Zn retention and protein utilization were also improved by the Zn-Met supplement.

Chronic subclinical mastitis reduces milk and components yield at the cow level

2020 ◽  
Vol 87 (3) ◽  
pp. 298-305 ◽  
Author(s):  
Larissa Martins ◽  
Melina Melo Barcelos ◽  
Roger I. Cue ◽  
Kevin L. Anderson ◽  
Marcos Veiga dos Santos ◽  
...  
Keyword(s):  
Milk Yield ◽  
Positive Culture ◽  
Subclinical Mastitis ◽  
Milk Composition ◽  
Udder Health ◽  
Grand Total ◽  
Three Samples ◽  
Milk Component ◽  
Major Pathogens

AbstractWe evaluated the effects of chronic subclinical mastitis (CSM) caused by different types of pathogens on milk yield and milk components at the cow level. A total of 388 Holstein cows had milk yield measured and were milk sampled three times at intervals of two weeks for determination of SCC and milk composition, and microbiological culture was performed. Cows were considered healthy if all three samples of SCC were ≤200 000 cells/ml and were culture-negative at the third milk sampling. Cows with one result of SCC > 200 000 cells/ml were considered to suffer non-chronic subclinical mastitis whereas cows with at least 2 out of 3 results of SCC > 200 000 cells/ml had CSM. These latter cows were further sorted according to culture results into chronic negative-culture or chronic positive-culture. This resulted in four udder health statuses: healthy, non-chronic, chronicNC or chronicPC. The milk and components yields were evaluated according to the udder health status and by pathogen using a linear mixed effects model. A total of 134 out of 388 cows (34.5%) were chronicPC, 57 cows (14.7%) were chronicNC, 78 cows (20.1%) were non-chronic and 119 cows (30.7%) were considered healthy, which resulted in a grand total of 1164 cow records included in the statistical model. The healthy cows produced more milk than each of the other groups (+2.1 to +5.7 kg/cow/day) and produced higher milk component yields than the chronicPC cows. The healthy cows produced more milk than cows with chronicPC caused by minor (+5.2 kg/cow/day) and major pathogens (+7.1 kg/cow/day) and losses varied from 5.8 to 11.8 kg/cow/day depending on the pathogen causing chronicPC mastitis. Chronic positive-culture cows had a reduction of at least 24.5% of milk yield and 22.4% of total solids yield.

scholarly journals Growth, productive performance, and udder health of crossbred Holstein x Simmental cows and purebred Holstein cows

2018 ◽  
Vol 39 (6) ◽  
pp. 2597 ◽  
Author(s):  
Deise Aline Knob ◽  
Dileta Regina Moro Alessio ◽  
André Thaler Neto ◽  
Fabrício Desconsi Mozzaquatro
Keyword(s):  
Milk Yield ◽  
Growth Curves ◽  
Dairy Herd ◽  
Milk Composition ◽  
Holstein Cows ◽  
Dairy Herds ◽  
Improvement Program ◽  
Udder Health ◽  
South Of Brazil ◽  
Solids Content

The crossbreeding between dairy cow breeds has been used as an alternative to improve some characteristics such as milk composition, udder health, and reproductive aspects on dairy herds. The aim was to compare growth, milk yield and composition, and mammary gland health of crossbred Holstein x Simmental and purebred Holstein cows. Data were gathered from a farm located in Santa Catarina state, south of Brazil. Cow growth was assessed by weighing calves and heifers monthly. Yet for milk yield and udder health, data were taken from records of the official Dairy Herd Improvement Program carried out in the evaluated farm. These data were subjected to variance analysis using the MIXED procedure of SAS statistical software. Non-linear regressions were used to adjust the data to the growth curves. The crossbred Holstein x Simmental cows produced more milk than did purebreds (31.8 kg/day vs. 30.4 kg/day; p < 0.05), with higher contents of lactose (4.63% vs. 4.53%) and protein (3.14% vs. 3.03%), but no differences in fat content (3.00 vs. 2.96). Purebred cows had higher somatic cell score (SCS) 4.49 vs. 2.93 (P < 0.0001). Furthermore, no differences were found for the growth of calves and heifers. In conclusion, crossbred Holstein x Simmental cows have higher energy corrected milk as the Holstein ones, whit greater uncorrected milk yield only for cows with three or more lactations. Crossbreeds cows produce milk with better quality, indicated by lower SCS and higher solids content, besides showing a lower SCS and no differences regarding weight gain of calves and heifers.

scholarly journals ​Effect of Dietary Inclusion of Cumin Seed (Cuminum cyminum) on Voluntary Feed Intake, Milk Yield, Milk Quality and Udder Health of Dairy Cows

2021 ◽  
Author(s):  
S. Bhargav ◽  
A.K. Patil ◽  
R.K. Jain ◽  
N. Kurechiya ◽  
R. Aich ◽  
...  
Keyword(s):  
Body Weight ◽  
Dairy Cows ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Composition ◽  
Cuminum Cyminum ◽  
Udder Health ◽  
Cumin Seed

Background: Plants containing essential oils can be a cost-effective means of improving efficiency of milk production and optimizing milk composition of dairy cows. Cuminum cyminum (green cumin) belongs to the Apiaceae family and is a well-known herbal medicine in Iran. The medicinal properties of cumin may have beneficial effects on milk production. However, very few studies have been reported whereby cumin has been fed to ruminants. Therefore, the present study is design to investigate the effect of cumin supplementation on milk yield, milk quality and udder health of lactating dairy cows. Methods: Twelve multiparous lactating cows at early stage of lactation was selected and randomly allotted to two equal groups (n=6) on the basis of milk yield. In addition to normal routine feeds and fodders, cows in groups T1 was fed cumin seed @ 50 g/d/head for 90 days. Fortnightly body weight was determined on the basis of body measurement of animals. All feed samples was analysed for proximate composition, Ca and P. The daily milk yield (kg/d) of individual cows was recorded by weighing. Milk samples were collected after complete milking and thorough mixing for determination of milk composition. Udder health was monitored by MCMT (modified california mastitis test), measuring milk pH and SCC (somatic cell count) at fortnightly intervals. Result: The results indicated that overall mean body weight, average DMI was statistically (P greater than 0.05) similar in both the groups. The average milk yield (kg) of animals was statically non significant (P greater than 0.05) but numerically 20.64% higher milk yield was observed in cumin seed supplemented group than control group. There was no effect of cumin supplementation on chemical composition (Fat, TS, SNF, Lactose and Protein) of milk in dairy cows. Overall mean milk pH and somatic cell count (SCC) in both the groups was statically similar but numerically lower in treatment group. The overall mean (%) of MCMT positive animals was 14.29 and 9.52 in T0 (Control) and T1 (Treatment) groups, respectively. From the results it can be deduced that the cumin seed (Cuminum cyminum) supplementation improves milk yield by 20.64%. However, it has no effect on composition of milk in dairy cows. Supplementation improved the udder health and found no effect on dry matter intake (DMI) in dairy cows.

Effects of Milking Temperament on Milk Yield, Udder Health and Milk Composition in Crossbred Jersey Cows

2019 ◽  
pp. 1
Author(s):  
Ajit Kumar ◽  
Dilip Mandal ◽  
Ajoy Mandal ◽  
Champak Bhakat ◽  
Anupam Chatterjee ◽  
...  
Keyword(s):  
Milk Yield ◽  
Milk Composition ◽  
Udder Health ◽  
Jersey Cows
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