scholarly journals Effects of feeding diets based on transgenic soybean meal and soybean hulls to dairy cows on production measures and sensory quality of milk

2015 ◽  
Vol 98 (12) ◽  
pp. 8986-8993
Author(s):  
W.P. Weiss ◽  
C.T. Simons ◽  
R.D. Ekmay
2010 ◽  
Vol 128 (1-3) ◽  
pp. 123-132 ◽  
Author(s):  
Lisbeth Mogensen ◽  
Jannie Steensig Vestergaard ◽  
Xavier Fretté ◽  
Peter Lund ◽  
Martin Riis Weisbjerg ◽  
...  

1970 ◽  
Vol 37 (1) ◽  
pp. 52-56 ◽  
Author(s):  
MR Islam ◽  
MN Hassan ◽  
MSR Siddiki ◽  
MAS Khan ◽  
MA Islam

The present study was conducted to investigate the milk quality from different genotype. A total 48 dairy cows belong to different genotypes such as Holstein cross, Jersey cross, Sahiwal cross and Red Chittagong were selected. Milk compositional viz. specific gravity, Acidity test, Fat test, Protein test, Solids-not-fat (SNF) test and total solids (TS) test were carried out. It was observed that the higher specific gravity of milk was obtained from Jersey cross and Red Chittagong genotype, which was significantly higher (P<0.01) than the other genotype of dairy cows. The highest acidity (%) was observed (0.165±0.014) in Red Chittagong and the lowest acidity (0.118±0.025) in Sahiwal cross. The highest fat (%) was observed from Red Chittagong cows milk which was statistically higher from Jersey cross and Sahiwal cross and the lowest fat (%) was found in the milk of Holstein cross cows. The highest SNF value was obtained from Jersey cross and the lowest from Sahiwal cross. On the other hand, Holstein cross and Red Chittagong was nearly similar. Red Chittagong milk sample showed the highest TS value and the lowest value was observed from Holstein cross. The highest protein value was found from Red Chittagong and the lowest from Holstein cross but the protein content of other two genotypes were nearly similar. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9868 BJAS 2008; 37(1): 53-56


2018 ◽  
Vol 98 (9) ◽  
pp. 3478-3484 ◽  
Author(s):  
Julia Berti ◽  
Nelson R Grosso ◽  
Héctor Fernandez ◽  
María C Pramparo ◽  
María F Gayol

1995 ◽  
Vol 5 (3) ◽  
pp. 139-146 ◽  
Author(s):  
Mary H. Wiedenhoeft ◽  
Barbara A. Barton

2020 ◽  
Vol 9 (11) ◽  
pp. e1749119607
Author(s):  
Renata Cristina Defiltro ◽  
Patricia Glombowsky ◽  
Lilian Kolling Girardini ◽  
Julcimar Machado Maciel ◽  
Marcelo Vedovatto ◽  
...  

The aim of this study was to determine whether the addition of a homeopathic product to dairy cow feed would improve health and production efficiency, as well as composition and quality of milk. The product tested here was produced to stimulate immunity and indirectly to prevent the colonization of the mammary gland by bacteria, thereby decreasing somatic cell counts and bacteria in cow’s milk. Fifty dairy cows were used, divided into two groups: Control (n = 25) and Treated (n = 25). For 90 consecutive days, 50 grams of homeopathic product (treated group) was added to the concentrate; 50 g of the product vehicle (limestone) was added to the concentrate of the control cows. We performed composition and quality analysis on the milk (days 1, 15, 30, 45, 60, 75, and 90) as well as blood collection to carry out hematological and metabolism analyses (days 1, 30, 60, and 90). We found that fat content in the milk cows consuming the homeopathic agent was greater than that of the control group. Because of this increased fat content, there was a tendency towards higher total solids content in treated cows. A treatment effect was found in terms of total bacterial count (TBC); that is, there were lower TBCs in milk of treated animals than in control animals. There was a trend of a treatment effect versus day for somatic cell count (SCC); that is, there were lower SCC in animals that consumed the homeopathic on days 15 and 30 of the experiment. There was no difference between groups in terms of milk production; however, there was a negative correlation between milk production and TBC or SCC in the milk of cows that consumed homeopathic product. Animals in the treated group had lower total leukocyte and lymphocyte counts than did the control group, as well as a tendency toward lower neutrophil counts in these animals. Several bacteria were isolated from the cows' milk during the experimental period, with no treatment effect. In particular, we isolated Corynebacterium spp., Staphylococcus aureus, Staphylococcus epidermidis and Staphylococcus hyicus in greater numbers of cows compared to other etiologic agents. Based on these results, we conclude that consumption of the homeopathic product by dairy cows had positive effects on milk quality.


Author(s):  
Mastitis Kristina Kharkevich ◽  
◽  
Shubhadeep Roychoudhury ◽  
Petr Slama ◽  
◽  
...  

Cytokines are important agents in regulating immune response in many diseases, and knowledge of relevant cytokine immune networks is necessary for understanding processes encompassed within their pathophysiology. One such disease is mastitis, which is inflammation of the mammary gland and greatly impacts the quantity and quality of milk produced by dairy cows. Understanding the cytokine immune network will be helpful in developing effective immunotherapy for mastitis, which is particularly important in view of the increasing antibiotic resistance among the bacterial pathogens causing this disease.


2020 ◽  
Vol 30 (4) ◽  
pp. 189
Author(s):  
Dewi Ayu Ratih Daning ◽  
L M Yusiati ◽  
C Hanim ◽  
B P Widyobroto

<p class="awabstrak2">Feed efficiency is essential for dairy cows because it can increase production and quality of milk, and reduce methane emissions in the environment. One of the strategies on increasing feed efficiency is using rumen modifier. Essential oils have antimicrobial activities and have been used in rumen modifier in dairy cows. The aim of this paper is to review several studies on the utilization of essential oils as feed additive to enhance production and quality of milk of dairy cow. Based on some research reports, using essential oils which contained thymol, eugenol, cinnamaldehyde and carvacrol in dairy cattle feed decreased the population of protozoa, methanogens, proteolytic, and biohydrogenase bacteria. The impact of engineering of the rumen microbial population has led to optimal rumen fermentation resulted in the efficiency of carbohydrate, protein, and fat utilizations. It can be concluded that essential oils are potential as rumen modifier by inhibit methanogenesis, increase propionate, energy efficiency and ruminal by pass protein. The inconsistent results on milk production and milk fat requires further research to study deeper the effect of dosage and type of essential oils on dairy cows  performance.</p>


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