scholarly journals Thyroid hormones, blood plasma metabolites and haematological parameters in relationship to milk yield in dairy cows

1983 ◽  
Vol 36 (1) ◽  
pp. 93-104 ◽  
Author(s):  
J. W. Blum ◽  
P. Kunz ◽  
H. Leuenberger ◽  
K. Gautschi ◽  
M. Keller

ABSTRACTTo study their relationship to milk yield, the concentrations, in jugular venous blood, of thyroxine iodine (T4I), thyroxine (T4), 3,5,3'-tri-iodothyronine (T3), glucose, non-esterified fatty acids (NEFA), triglycerides, phospholipids, cholesterol, total protein, albumin, urea, haemoglobin and packed cell volume (PCV) have been measured in 36 cows (Simmental, Swiss Brown, Holstein and Simmental × Holstein) of different ages during a full lactation, pregnancy, dry period, parturition and 150 days of the ensuing lactation. Thyroid hormones and triglycerides were negatively, and total protein, globulin, cholesterol and phospholipids were positively, correlated with uncorrected or corrected milk yield during several periods of lactation, whereas glucose, NEFA, albumin, urea, haemoglobin and packed cell volume were not correlated with milk yield. The 10 animals with the highest milk yield (18·9 to 23·5 kg/day) exhibited significantly lower values of T4I, T4, T3 and glucose, significantly higher levels of total protein and globulin and tended to have higher levels of NEFA than the 10 cows with the lowest milk yield (10·9 to 14·3 kg/day) throughout or during certain periods of lactation, whereas concentrations of triglycerides, phospholipids, cholesterol, albumin, haemoglobin and PCV did not differ. Changes in T4I, T4, T3, glucose and total protein during lactation were also influenced by age, presumably associated with an increase in milk production with age. T3 was consistently lowest and cholesterol and phospholipids, during later stages of lactation, were highest in Holsteins, which had the highest milk yields of all breeds. Changes of blood parameters were mainly caused by shifts in energy and protein metabolism in association with level of milk production

2021 ◽  
pp. 1098612X2110647
Author(s):  
Alicia M Skelding ◽  
Alexander Valverde

Objectives The aim of this study was to evaluate the change in packed cell volume (PCV) and total protein following intramuscular preanesthetic sedation with one of three drug combinations in cats. Methods Thirty client-owned cats were enrolled in this prospective, randomized, blinded, clinical study. A venous blood sample was obtained prior to administration of any sedation and PCV, total protein, electrolytes (Na+, K+, Cl–, iCa2+), glucose and lactate were measured. Cats were randomly assigned to receive one of three intramuscular sedation protocols (n = 10 cats/protocol): methadone 0.2 mg/kg + acepromazine 0.02 mg/kg (MA), methadone 0.2 mg/kg + dexmedetomidine 5 µg/kg (MD) or methadone 0.2 mg/kg + midazolam 0.2 mg/kg + alfaxalone 2 mg/kg (MMA). Twenty-five minutes later, cats were assessed for level of sedation followed by another venous blood sampling to evaluate the same variables as above. Results There were no significant differences in demographics (age, weight, sex) between groups. Level of sedation was significantly higher in MMA cats. Within groups, after premedication, PCV and hemoglobin significantly decreased in all groups, total protein significantly decreased in the MA and MMA groups and glucose significantly increased in the MD group. For electrolytes, statistical changes were not clinically relevant; Cl– mean difference was significantly different between MA and MD; in the MD group Na+ and Cl– significantly decreased and in the MMA group Cl– significantly increased. Conclusions and relevance All three sedation protocols caused significant decreases in PCV and hemoglobin in healthy cats.


2005 ◽  
Vol 29 (1) ◽  
pp. 82-91
Author(s):  
A. M.H. Al- judi

Metabolic profile test was done on Friesian cows of Al-Ishaqi plan. Bloodsamples were collected from 21 cows in the second lactation stage, 7cows withhigh Milk yield, 7cows with moderate milk yield& 7cows with low milk yield.Estimation of the following were done; hemoglobin, packed cell volume bloodurea nitrogen glucose total protein albumin& globulin, in three periods (1monthafter calving, 4month after calving, 7month after calving). The results revealedthat Hb, total protein& globulin ratios were increased, while the albumin ratiowas decreased in the first period, PCV increased in the third period, albuminratios showed higher levels in high milk yield cows, BUN show higher levels inthe first period, increased levels of BUN in high milk yield cows, low levels ofblood glucose in the second period.Signification correlation coefficient betweentotal protein ratios& Hb, globulin ratios& BUN were obtained, while significantnegative correlation between total protein& albumin was existed. Regressionequations between total protein ratios& all blood traits were calculated.


Author(s):  
S. A. Taha ◽  
Natik H. AL-Kuds ◽  
N. Y. Aboo ◽  
M. N. Abdullah

This study is carried out to investigate the effect of the light period on milk yield and its components as well as on some blood parameters, in Alrashiedia Animal Farm, Directorate of Agricultural Researches, Ministry of Agriculture on 24 improved Awassi ewes in 2nd and 3rd lactation from 20/11/2011 to 29/1/2012. The ewes are randomly divided into 3 groups; 1st group is 24h:0  h. (light : dark) exposed to light period,  the2nd  8h:16 h. of light period , while 3rd group 16h:8 h.. All ewes allocated on the same concentrate and roughages ration  in addition to 5 kg / hd / day green alfalfa. Milk yield is recorded every 10 days after separation of suckling lambs from their mothers for 12 hours (9 pm to 9 am). Blood sample are taken three time (at the begging , Middle and end of the study) to calculate : total protein, albumin, globulins, cholesterol, and triglyceride. The results show that there is no significant effect of light period on milk production, the total amount of milk through the recorded periods for the three group are 10652.0,10021.0 and 11986.78gm/hd .There is no significant effect on the  milk component. The  blood parameters are not affected by the light :dark change . It can be concluded that the change in the light :dark  period does not alter milk yield and some blood parameters in this study.


Author(s):  
Є. Ф. Ткач

Викладено результати дослідження біохімічного і морфологічного складу крові корів української чорно-рябої молочної і голштинської порід та його зв’язку з молочною продуктивністю. Досліджено, що рівень молочної продуктивності пов’язаний або знаходиться у прямій залежності від інтенсивності обмінних процесів в організмі тварин. Встановлено позитивний кореляційний зв’язок між загальним білком крові і надоєм корів та між альбумінами і надоєм. Не виявлено закономірного взаємозв’язку між кількістю лейкоцитів і молочною продуктивністю корів обох порід. The article presents the results of biochemical and morphological study of bovine blood of Ukrainian black and white dairy and Holstein breeds and its relationship with milk production. It has been proved that the level of milk production is associated or is in direct proportion to the intensity of metabolism in animals. The positive correlation between total protein levels and milk yield of cows and between albumin and milk yield has been stated. No regular relationship between the number of leukocytes and milk production of cows of both breeds has been revealed.


2021 ◽  
Vol 285 ◽  
pp. 04005
Author(s):  
Maria Grinchuk ◽  
Yulia Nesterova

The aim of work is to explore influence of first fruitful insemination, service period and dry period to dairy productivity of Simmental cows. The research is aimed at studying the milk production of Simmental cows with different levels of reproductive qualities. The result of the research, a relation was established between the age of the first fruitful insemination, the duration of the service period, the duration of the dry period and milk production performance. It has been established that the age of the first fruitful insemination at 18-24 months has the most beneficial effect on subsequent milk production. The service period of 90-120 days has a positive effect to an increase in milk yield per 305 days of lactation, the longer service period negatively affects to the mass fraction of fat. With an increase in the duration of the dry period, the mass fraction of fat increases, but milk yield decreases. The influence of reproductive qualities to the milk protein is negligible. It was revealed that the age of the first insemination at 18-24 months is the most profitable for production. According to the results of the research, it can be judged that reproductive qualities, in combination with other factors, affect the milk productivity of Simmental cows.


2019 ◽  
Vol 98 (8) ◽  
pp. 811-819
Author(s):  
E. M. Trofimovich ◽  
S. A. Nedovesova ◽  
Roman I. Aizman

Introduction. The lack of hygienic norms for Mg2+ and Ca2+ in drinking water and the wide ranges of acceptable hygienic norms (AHN) of these cations in water packaged in containers determine the relevance of experimental studies on the substantiation of AHN of Mg2+, Ca2+ and the hardness of drinking water with a centralized water supply to the population. Material and methods. Chronic experiments were performed on 5 groups of adult Wistar rats (n = 50): control animals received drinking water (Ca2+ 20.0; Mg2+ 6.0 mg / dm3, hardness 1.5-1.8 mEq/dm3); four other groups received model drinking water with different contents of Ca2+ (50, 80, 100 and 140 mg/dm3) and Mg2+ (20, 40, 55 and 85 mg/dm3) by adding CaCl2 or MgSO4 salts to the control water. The effect of these drinking water samples on kidney function, ion osmotic blood parameters, plasma metabolites of lipid and protein metabolism, as well as the concentration of thyroid hormones (T3 and T4) and cortisol were studied. Results. Prolonged action of increased concentrations of Ca2+ and Mg2+ on the organism was established to cause alterations in fat metabolism, the adaptive activation of osmoregulatory and ion regulatory kidney functions, increasing the concentration of thyroid hormones and a decrease of cortisol titer in plasma. Magnesium led to more pronounced changes in water-salt metabolism, and at a concentration of 85.0 mg/dm3 (7.0 mg-Eq/dm3) - to depletion of secretion of the described hormones. Conclusion. Based on the obtained results, individual ranges for AHN of calcium and magnesium concentrations in water were recommended. The upper limit of AHN of drinking water total hardness is of 7.0 mg-Eq/dm3 at the joint presence of Ca2+and Mg2+. The rule of hygienic qualitative and quantitative estimation of calcium and magnesium types of drinking water hardness is formulated.


2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Joko Prastowo ◽  
Bambang Ariyadi

Penelitian ini bertujuan mengetahui pengaruh infeksi telur cacing Ascaridia galli (A. galli) terhadap elektrolit dan gambaran darah ayam kampung (Gallus domesticus). Kelompok perlakuan dilakukan infeksi telur berembrio cacing A. galli sebanyak 500 telur cacing/ekor ayam. Sampel berupa feses ayam untuk pemeriksaan parasitologi dan darah untuk pemeriksaan elektrolit dan pemeriksaan darah rutin. Infeksi cacing A.galli menyebabkan penurunan kadar kalium serum pada hari ke-21 dan 28 setelah infeksi (P<0,05), kenaikan kadar magnesium serum pada hari ke-21 dan 28 setelah infeksi (P<0,05) dan tidak memberikan pengaruh terhadap kadar natrium serum setelah infeksi. Hasil penelitian ini menyebabkan penurunan terhadap jumlah eritrosit pada hari ke-7 dan 14 setelah infeksi (P<0,05), penurunan terhadap nilai packed cell volume (PCV) pada hari ke-14 setelah infeksi (P<0,05), kenaikan nilai total protein plasma pada hari ke-7 setelah infeksi (P<0,05), kenaikan nilai absolut sel eosinofil pada hari ke-14 setelah infeksi (P<0,05), tidak memberikan pengaruh terhadap kadar hemoglobin, jumlah leukosit, nilai absolut sel heterofil, limfosit, dan monosit. Pada hari ke-28 setelah infeksi, rerata cacing yang hidup yaitu 13 ekor cacing. Dari hasil penelitian disimpulkan bahwa, infeksi 500 telur cacing berembrio A. galli menyebabkan penurunan kadar kalium, kenaikan kadar magnesium, penurunan terhadap jumlah eritrosit, penurunan terhadap nilai PCV, kenaikan nilai total protein plasma, kenaikan nilai absolut sel eosinofil, dan tidak memberikan pengaruh terhadap natrium, kadar hemoglobin, jumlah leukosit, nilai absolut sel heterofil, nilai absolut limfosit, dan nilai absolut monosit.


2009 ◽  
Vol 77 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Roland G Karcagi ◽  
Tibor Gaál ◽  
Piroska Ribiczey ◽  
Gyula Huszenicza ◽  
Ferenc Husvéth

The aim of the study was to test the effect of rumen-inert fat supplements of different chemical forms or containing different unsaturated/saturated (U/S) fatty acid contents on milk production, milk composition and liver and blood metabolic variables of high-yielding dairy cows in the peripartal period. Thirty Holstein-Friesian dairy cows were divided into three equal groups and fed a corn silage-based diet, without fat supplementation (control) or supplemented with 11·75 MJ NEl per day of calcium soaps of palm oil fatty acids (CAS; U/S=61/39) or with 11·75 MJ NEl per day of hydrogenated palm oil triglyceride (HTG; U/S=6/94). Each diet was fed from 25±2 d prior to the expected calving to 100±5 d post partum. Compared with the control, both CAS and HTG supplementation resulted in an increase of the average milk yield. Milk fat content and fat-corrected milk yield were higher in the HTG group but lower in the CAS group than in the control group. In all groups liver triglyceride concentrations (TGL) increased from 15 d prepartum to 5 d post partum, and then decreased thereafter. At 5 d TGL was lower in the HTG group than control or CAS cows. No significant differences were detected in TGL among dietary treatments at 15 d prepartum and 25 d post partum. Higher plasma glucose and insulin and lower non-esterified fattay acids and β-hydroxybutyrate concentrations and aspartate aminotransferase activity were measured in the HTG group than in the control or CAS groups at 5 d or 25 d post partum. Our results show that HTG may provide a better energy supply for high-yielding dairy cows in negative energy balance than CAS around calving.


2009 ◽  
Vol 33 (2) ◽  
pp. 41-49
Author(s):  
Hanan J. N. Al.Awsy

The aim of this study is to determine the effect of Hymenolepis nana infection in some bloodparameters of some final host ( rats & mice ) by experimental infection of 15 rats and 48 mice . Theresults showed that the prepatant period between 12-14 days and the shape of eggs spherical & slightlyellipsoid in mean 40.92 X 35.96 microne & the numbers of eggs in feaces increased with the severityof the infection .The infection which effected on the blood parameters by decreasing the means of packed cell volume ,total white blood count , lymphocytes , while increased the means of neutrophils , monocytes ,eosinophils & basohpils in infected group


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