scholarly journals Milk quality of dual-purpose cows supplemented with biological fish silage (Pterygoplichthys sp.) as a protein source

2020 ◽  
Vol 33 (4) ◽  
pp. 252-263
Author(s):  
Raquel A Castillo-Mercado ◽  
Adolfo Bucio-Galindo ◽  
Rosa M Salinas-Hernández ◽  
Emilio M Aranda-Ibáñez ◽  
Francisco Izquierdo-Reyes ◽  
...  
Keyword(s):  
Production Systems ◽  
Latin Square ◽  
Protein Source ◽  
Limiting Factors ◽  
Adaptation Period ◽  
Lactating Cows ◽  
Sanitary Condition ◽  
Sensory Analyses ◽  
Quality Of Milk

Background: Devilfish (Pterygoplichthys sp.) is a pest of high impact in aquaculture production systems. Through a biological fermentation process, it could be used as a source of protein for dairy cows. However, milk palatability and smell could be limiting factors. Objective: to evaluate the quality of milk from cows supplemented with biological fish silage (Pterygoplichthys sp.) as a protein source. Methods: The treatments (T) evaluated were T1, 0% biological fish silage; T2, 10% biological fish silage; and T3, 20% biological fish silage. Twelve randomly selected cows were used in a Latin square experimental design, in which three treatments were tested with all of the cows during three time periods. Each period lasted 20 days (15-day adaptation period and 5-day experimental phase). Milk was analyzed for physicochemical, microbiological, sanitary condition and sensory characteristics. Analyses of variance were performed for all the response variables. Results: No significant differences for physicochemical variables were found among the treatments studied. Differences were observed in microbiological and sanitary variables among treatments, but values were in the range for high quality milk standards (˂100,000 CFU mL-1 aerobic mesophilic bacteria, and ˂400,000 somatic cells mL-1). In the sensory analyses, panelists did not detect strange odors nor fishy taste or odor in the milk of any of the treatments. Conclusion: Biological fish silage can be included up to 20% as a protein source in supplements for lactating cows.

scholarly journals Can Moderate Levels of Organic Selenium in Dairy Cow Feed Naturally Enrich Dairy Products?

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2269
Author(s):  
Irene Azorín ◽  
Josefa Madrid ◽  
Silvia Martínez ◽  
Marina López ◽  
María Belén López ◽  
...  
Keyword(s):  
Dairy Cow ◽  
Dairy Products ◽  
Sodium Selenite ◽  
Organic Selenium ◽  
Lactating Cows ◽  
Holstein Friesian ◽  
Quality Of Milk ◽  
General Physical ◽  
Oxidant Status

This work studied the effect of dairy cow ration supplementation with inorganic plus organic Se on metabolic status, milk yield, and the quality of milk and dairy products, especially its Se content. Twenty multiparous Holstein Friesian lactating cows were assigned to two feeding treatments. The cows were fed with 22.5 kg dry matter (DM) of total mixed ration (11.75 kg DM of forage plus 10.75 kg DM of concentrate) by head. There were two different concentrates with the same Se content (0.240 mg/kg of ration DM) but with different Se sources: The control (CON) was supplemented with inorganic Se (sodium selenite); and the other (IOSe) was supplemented with sodium selenite plus organic Se (Sel-Plex®), at 0.144 and 0.096 mg Se/kg of ration DM, respectively. The results indicated that, in general, the IOSe treatment did not modify the metabolic profile, and even decreased the total oxidant status (p < 0.05) and did not lead to a deterioration of quality and yield of milk. However, milk and cheese from IOSe had higher Se content (an increase of 29.7% and 38.2%, respectively) than CON (p < 0.01), but this effect was not observed in yogurt. In general, physical or sensorial parameters of cheeses did not show differences between treatments. Moderate inorganic plus organic Se supplementation may be more effective than inorganic Se, increasing the Se content in milk and cheese, without causing a deterioration in quality or productive parameters.

Milk productivity of cows and milk quality when using haylage prepared with preservatives Biosib and Silostan

2020 ◽  
pp. 18-27
Author(s):  
I. Fayzullin ◽  
R. Islamov ◽  
N. Kostomakhin
Keyword(s):  
Control Group ◽  
Milk Productivity ◽  
Lactating Cows ◽  
Feed Production ◽  
Republic Of Bashkortostan ◽  
The Republic ◽  
Quality Of Milk ◽  
Subsequent Storage ◽  
Experimental Group

Promising in feed production is the preparation of haylage with subsequent storage of herbage together with preservatives. The modern market off ers various chemical preservatives in the form of organic acids: propionic, formic, benzoic and their salts. Some disadvantages of preservatives of this group (volatility, toxicity, venom, ability to cause respiratory burns, corrosion, etc.) require to organize a search for new ones based on bacteria and enzymes. The purpose of the work was to increase the level of milk productivity of cows and quality of milk by using the preservatives Biosib and Silostan in the preparation of haylage. Scientifi c and economic experiment has been carried out in LLC “Agrofi rma Bairamgul” in the Uchalinsky area in the Republic of Bashkortostan. For the research, 36 Holstein cows have been selected, from which 3 groups of animals have been formed based on the principle of analogues per 12 heads in each. The input in the ration of lactating cows of grain and legume haylage prepared using the technology with the use of preservatives Biosib and Silostan contributes to the increase in milk productivity. The best eff ect has been demonstrated when using the drug Silostan (the 2nd experimental group), which can be explained by the diverse biological composition of microbes, as well as amino acid complexes, enzymes, vitamins and trace elements. The increase in milk productivity of cows of the 1st and 2nd experimental groups allows to reduce the prime cost of production, respectively according to groups, by 38,7 rubles or 3,31 % and 51,1 rubles or 4,43 %; to increase revenue from the sale of milk by 3186,5 rubles or 4,32 % and 3664,0 rubles or 7,24 %; net profi t by 1791,9 rubles or 17,97 % and 2570,6 rubles or 25,78 % and the level of profi tability by 4,14 and 5,52 % compared to the control group.

Efficiency of protein concentrate application in the rations of highly productive cows

2021 ◽  
pp. 15-25
Author(s):  
N. P. Buryakov ◽  
M. A. Buryakova ◽  
A. S. Zaikina ◽  
I. A. Kasatkina ◽  
D. E. Aleshin
Keyword(s):  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Protein Concentrate ◽  
Lactating Cows ◽  
New Information ◽  
Ayrshire Breed ◽  
Quality Of Milk ◽  
Dispensable Amino Acids

The association between science and production is gradually developing due to the arrival of new information and discoveries about the composition of feed and the transformation of nutrients in the body of cows. One of the most important links in the formation of animal productivity during lactation is the use of new feed products and feed additives in feeding. The results of scientific and economic experiment on the use of protein concentrate “Agro-Matic” in feeding of highly productive lactating cows of Ayrshire breed are contained the article. The inclusion of protein concentrate “AgroMatic” in the daily rations of lactating cows in the amount of 1,0 and 1,5 kg/head/day increases the level of indigestible protein by 6,1 and 8,9 %, respectively. The use of protein concentrate in the amount of 1,5 kg in cows feeding helps to increase the digestibility of nutrients in rations the quality of milk and the productivity of cows. When feeding protein concentrate in the amount of 1,5 kg the milk productivity of cows during the period of increasing the milk yield was 4297,5 kg of milk, the yield of essential and dispensable amino acids with milk was significantly higher. The yield of milk protein in cows that received protein concentrate in the ration in the amount of 1,0 kg was 137,7 kg, and when using 1,5 kg – 141,4 kg, which was signifi cantly higher than in the control group by 10,2 and 13,6 kg, respectively. The use of protein concentrate “Agro-Matic” in the ration had a benefi cial eff ect on the digestibility of protein. The digestibility of raw protein of the feed mixture with the inclusion of 1,5 kg of protein concentrate was 71,1 % compared to 68,0 % in the basic ration, which are used at the Maysky complex in the “Plemzavod Maysky”

The effects of feeding frequency of concentrates and feeding sequence of hay on eating behavior, ruminal environment and milk production in dairy cows

1994 ◽  
Vol 74 (1) ◽  
pp. 103-113 ◽  
Author(s):  
G. K. Macleod ◽  
P. E. Colucci ◽  
A. D. Moore ◽  
D. G. Grieve ◽  
N. Lewis
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Eating Behavior ◽  
Milk Fat ◽  
Latin Square ◽  
Feeding Frequency ◽  
Daily Feeding ◽  
Lactating Cows ◽  
Rumen Metabolism

Two lactation trials were conducted with Holstein cows to assess the effects of varying the feeding frequency of concentrates, addition of long hay, and the sequence of hay and grain feeding on performance, rumen fermentation and eating behavior. Numbers of primiparous and multiparous cows assigned to repeated Latin square designs (4 × 4) were 8 and 12 for exp. 1 and 12 and 20 for exp. 2. Each experiment utilized four extra rumen-fistulated lactating cows to examine aspects of rumen metabolism. The four treatments applied in exp. 1 were (a) twice-daily feeding of concentrate, no hay; (b) thrice-daily feeding of concentrate, no hay; (c) hay offered 1 h before concentrate; and (d) hay offered 1 h after concentrate. Treatments in exp. 2 were similar, with the following exceptions: (b) concentrate six times daily; (c) hay 2 h before concentrate; and (d) hay 0.5 h after concentrate. In each treatment in both experiments, alfalfa silage was offered ad libitum. The average concentrate/forage ratio of the diets was 74:26 and 60:40 for exp. 1 and 2, respectively. In exp. 1, except for time spent eating and concentration of rumen propionate (increased with addition of 2 kg hay d−1, P < 0.05), treatments had no effect on dry matter intake, milk production and rumen metabolism. In exp. 2, inclusion of hay in the diet (3 kg d−1) increased DM intake (P < 0.001) and milk (P < 0.05), protein and lactose (P < 0.01) yields but decreased milk-fat test (P < 0.01). Hay also increased the ruminal molar proportions of propionate, butyrate (P < 0.05) and valerate (P < 0.001) and decreased acetate (P < 0.05), isobutyrate and isovalerate (P < 0.001). As in exp. 1, rumen ammonia N and pH were not affected by treatments. The effects of hay inclusion in the diet in exp. 2 are consistent with the high quality of hay used, which had a lower fiber content than the silage. Key words: Feeding frequency, feeding sequence, lactating dairy cows

Methane emissions from sheep fed Eragrostis curvula hay substituted with Lespedeza cuneata

2020 ◽  
Vol 60 (15) ◽  
pp. 1777
Author(s):  
C. J. L. du Toit ◽  
W. A. van Niekerk ◽  
H. H. Meissner ◽  
L. J. Erasmus ◽  
R. J. Coertze
Keyword(s):  
Production Systems ◽  
Latin Square ◽  
Basal Diet ◽  
Open Circuit ◽  
Adaptation Period ◽  
Lespedeza Cuneata ◽  
Eragrostis Curvula ◽  
Ch4 Emissions ◽  
Experimental Treatments ◽  
Measurement Period

Context Reducing emissions of greenhouse gases from livestock production systems is a global research priority. Forages that contain condensed tannins, such as the perennial legume Lespedeza cuneata, may help to reduce ruminant methane (CH4) emissions. Aims The objective of this study was to investigate the effect of feeding different levels of L. cuneata hay on feed intake and enteric CH4 emissions of sheep fed a basal diet of subtropical Eragrostis curvula hay. Methods Four adult ruminally cannulated Dohne Merino wethers with initial bodyweight of 65.5 ± 3.5 kg were used in the experiment in a 4 × 4 Latin square design. The four experimental treatments were E. curvula hay substituted with 0%, 30%, 60% and 90% L. cuneata hay. Each of four experimental periods lasted 27 days, which consisted of a 14-day adaptation period, a 7-day digestibility trial, and a 6-day CH4-measurement period. During the 6-day CH4-measurement period, CH4 emissions were measured continuously over a 24-h period by using an open circuit respiration system. Key results Dry matter intake (DMI, g/kg W0.75) was higher (P &lt; 0.05) for sheep receiving 60% and 90% L. cuneata than 0% and 30% L. cuneata (77.33 and 84.67 g/kg W0.75 vs 62.96 and 62.71 g/kg W0.75). The increase in DMI corresponded with a linear increase in DM digestibility of the experimental treatments from 38% to 45% as the level of L. cuneata substitution increased. Methane yield was not influenced (P &gt; 0.05) by 30% inclusion of L. cuneata (17.6 g CH4/kg DMI) but decreased (P &lt; 0.05) as the inclusion level increased to 60% and 90% (13.8 and 14.3 g CH4/kg DMI). Conclusions Inclusion of L. cuneata hay in a diet based on E. curvula hay improved diet digestibility, and led to increased concentrations of crude protein, neutral detergent fibre and non-fibre carbohydrates. Substituting E. curvula hay with 60% L. cuneata on a DM basis resulted in the greatest reduction in CH4 yield of 21.4% compared with a diet of 100% E. curvula. Implications The results suggest that L. cuneata has the potential to reduce CH4 yield and possibly increase production from sheep by improving diet DM digestibility and through improved DMI.

scholarly journals Rendimiento de leche derivado de energía y proteína de vacas en pastoreo recibiendo suplementos en un sistema agrosilvopastoril

2021 ◽  
Vol 12 (1) ◽  
pp. 87-104
Author(s):  
Sherezada Esparza-Jiménez ◽  
Benito Albarran Portillo ◽  
Manuel González-Ronquillo ◽  
Anastacio García-Martínez ◽  
José Fernando Vázquez-Armijo ◽  
...  
Keyword(s):  
Latin Square ◽  
Woody Species ◽  
Metabolizable Energy ◽  
Dual Purpose ◽  
Performance Variables ◽  
Lactating Cows ◽  
Agrosilvopastoral Systems ◽  
Agrosilvopastoral System ◽  
Milk Urea

Dual purpose farms southwest of the State of Mexico produce milk and calves under subtropical agrosilvopastoral systems (ASPS). During the dry season, farmers supplement their cattle due to the low availability and quality of grasses, without considering, besides grasses, the contribution of woody species to dry matter intake, metabolizable energy (ME), and crude protein (CP) requirements of cows. The aim of this study was to determine milk produced from forage energy (MFe) and protein (MFp) of grazing cow with three types of supplement. First supplement consisted of cracked maize and commercial concentrate resulting on 14 % of CP (S14).  To the S14 mixture 7 % of soybean meal was added to increase CP to 16 % (S16), and commercial concentrate of 16 % CP was used as a third supplement (SC16). Six lactating cows were allocated in a 3x3 replicated Latin Square (three cows per square), three experimental periods (EP) (three weeks per EP). There were no significant effects of supplements (P=0.80) on performance variables. Mean milk yield was 6.8 kg/cow/d. Milk from forage energy and protein were 0.8 and 6.1 kg/cow/day, respectively. Mean milk urea nitrogen (MUN) was high regardless of supplement; but nitrogen in urine (44.1 mg/dL) and feces (1.4 mg/g) were higher for SC16 (P=0.001 and 0.04, respectively). Cows obtained 90 and 10 % of their CP and metabolizable energy requirements for maintenance and production from the agrosilvopastoral system.

Performance of lactating cows fed with cake of babassu: ingestive behavior, intake, digestibility, production and quality of milk

2019 ◽  
pp. 1-11
Author(s):  
Ricardo Alves De Araújo ◽  
Lucas Fernandes Da Silva ◽  
Osmar Anchieta Do Nascimento Junior ◽  
Paulo Junio Silva Damasceno ◽  
Paula Muniz Costa ◽  
...  
Keyword(s):  
Ingestive Behavior ◽  
Lactating Cows ◽  
Quality Of Milk

scholarly journals The influence of chlorella suspension on the quality of milk and its processing products

2020 ◽  
Vol 222 ◽  
pp. 02021
Author(s):  
Raisat Akhmedkhanova ◽  
Zaidin Dzhambulatov ◽  
Zemfira Gadzhaeva ◽  
Gadji Shabanov ◽  
Samira Alieva
Keyword(s):  
Amino Acids ◽  
Chemical Composition ◽  
Dairy Products ◽  
Nutritional Value ◽  
Milk Samples ◽  
Lactating Cows ◽  
Quality Of Milk ◽  
Almost All ◽  
Milk And Dairy Products

This job is devoted to the production of dairy products enriched with iodine, which accumulates naturally when chlorella (Chlorella vulgaris) suspension is introduced into the diet of lactating cows. It was found that as a result of the introduction into the diet of lactating Holstein cows during the winter stall period at the rate of 1 and 1.5 liters of chlorella suspension per head per day, the content of protein, fat and iodine in milk, as well as in macro and microelements, and almost all amino acids they are superior compare to milk samples from the experimental groups. Milk and dairy products made from cows’ milk that have been fed with chlorella suspension have increased nutritional value, improved properties and a well-balanced chemical composition.

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