Some haematobiochemical alterations in buffaloes suffering from milk fever with trail of treatment

Document Type : Original researches

Abstract

This study was planned to investigate the effect of milk fever and treatment on haemato-biochemical parameters alterations in buffaloes. About 15, 4-5 years old buffaloes (5 healthy -10 suffering from milk fever) were divided into 3 groups (5/each). 1st group healthy buffaloes served as control, 2nd group buffaloes suffering from slight milk fever or the first stage of milk fever (tremors in head and legs) and treated by 500 ml Calcium borogluconate (I/V) as one dose, along with 25 ml phosphonic acid/buffalo (I/V), while the 3rd group buffaloes were suffering from severe milk fever (depression, lateral recumbancy beside unconsciousness)and  treated by 500 ml Calcium borogluconate (I/V) as one dose and  25 ml phosphonic acid(I/V)/buffaloe along with 1.5ml/50 kg bwt vitamin D (I/M) daily for 5 days. Blood samples were taken from each buffalo one pre and at 5th days post treatment for determination of hematobiochemical parameters changes.
Buffaloes suffering from milk fever revealed a significant reduction in calcium, phosphorus, α, β globulins, superoxide dismutase (SOD), catalase (CAT), glutathione(GSH), glutathione peroxidase (GSH-px) beside an insignificant reduction in magnesium, potassium, red blood cells (RBCs), hemoglobin (Hb), packed cell volume (PCV), lymphocyte, basophil, monocyte, total protein, albumin , total globulin coupled with a significant increase in glucose, white blood cells (WBCs), neutrophil, eosinophil, cortisol, parathyroid, aspartate amino transferase ( AST), alanine amino transferase(ALT), alkaline phosphatase (ALP), creatinin kinase (CK), creatinin phosphkinase (CPK), lactate dehydrogenase (LDH),and malondialdehyde (MDA) associated with significant increase in γ globulin.
Treatment of diseased buffaloes using Calcium borogluconate, phosphonic acid and vitamin D improved its healthy status as well the hematobiochemical parameters and returned to nearly normal levels at 5th day post treatment when compared with healthy control buffaloes.
Summaring up our observations, it could be concluded that milk fever in buffaloes induced some adverse effects in hematobiomcheical parameters and oxidation. Treatment of diseased buffaloes by Calcium borogluconate, phosphonic acid and vitamin D induced cure of diseased buffaloes and improved the adverse effects of milk fever.

Keywords

Main Subjects


Some haematobiochemical alterations in buffaloes suffering from milk fever with trail of treatment

By

Seif E. Salem, Eman I.M Ismail, Mohamed Darwish, Marwa, M., Mona Salah Eldeen and Ehdaa O. Hamed

Department of Biochemistry, Nutritional deficiency diseases and Toxicology Department, Dokki-Giza, Zagazig Branch and Fayoum Branch

ABSTRACT

This study was planned to investigate the effect of milk fever and treatment on haemato-biochemical parameters alterations in buffaloes. About 15, 4-5 years old buffaloes (5 healthy -10 suffering from milk fever) were divided into 3 groups (5/each). 1st group healthy buffaloes served as control, 2nd group buffaloes suffering from slight milk fever or the first stage of milk fever (tremors in head and legs) and treated by 500 ml Calcium borogluconate (I/V) as one dose, along with 25 ml phosphonic acid/buffalo (I/V), while the 3rd group buffaloes were suffering from severe milk fever (depression, lateral recumbancy beside unconsciousness)and  treated by 500 ml Calcium borogluconate (I/V) as one dose and  25 ml phosphonic acid(I/V)/buffaloe along with 1.5ml/50 kg bwt vitamin D (I/M) daily for 5 days. Blood samples were taken from each buffalo one pre and at 5th days post treatment for determination of hematobiochemical parameters changes.

Buffaloes suffering from milk fever revealed a significant reduction in calcium, phosphorus, α, β globulins, superoxide dismutase (SOD), catalase (CAT), glutathione(GSH), glutathione peroxidase (GSH-px) beside an insignificant reduction in magnesium, potassium, red blood cells (RBCs), hemoglobin (Hb), packed cell volume (PCV), lymphocyte, basophil, monocyte, total protein, albumin , total globulin coupled with a significant increase in glucose, white blood cells (WBCs), neutrophil, eosinophil, cortisol, parathyroid, aspartate amino transferase ( AST), alanine amino transferase(ALT), alkaline phosphatase (ALP), creatinin kinase (CK), creatinin phosphkinase (CPK), lactate dehydrogenase (LDH),and malondialdehyde (MDA) associated with significant increase in γ globulin.

Treatment of diseased buffaloes using Calcium borogluconate, phosphonic acid and vitamin D improved its healthy status as well the hematobiochemical parameters and returned to nearly normal levels at 5th day post treatment when compared with healthy control buffaloes.

Summaring up our observations, it could be concluded that milk fever in buffaloes induced some adverse effects in hematobiomcheical parameters and oxidation. Treatment of diseased buffaloes by Calcium borogluconate, phosphonic acid and vitamin D induced cure of diseased buffaloes and improved the adverse effects of milk fever.

Keyword:  buffaloes - milk fever - hematobiochemical- antioxidant enzymes hormone

INTRODUCTION

Buffaloes are considered the main important animals in milk production in Egypt (Abou-Bakr 2009). Egyptian consumer prefers buffaloes milk due to its white color, acceptable flavor (El-Salam and El-Shibiny 2011). Buffalo milk is higher in protein content than cattle milk. (Hernández  et al. 2019).  

Metabolic diseases are the most important diseases in farm animals which mainly concerned with period commencing of parturition and extending until the peak of lactation (Radostitis et al.  2000). Milk fever is a complex mineral-related metabolic diseases affects high-productive cows from three years and older dairy animals known as parturient paresis or post parturient hypocalcaemia, causing some economic losses due to decrease of milk production (Laurent and Alexander 2007). It is one of the metabolic disorders of dairy animals related to parturition which occurred during final months of pregnancy or postparturation and develops within 48 hours after parturition, especially in high milk producing dairy animals (Seifi et al. 2004). It induces a drop of serum calcium, phosphorus levels and milk production (Jesse 2018).  Milk fever is related to high milk production due to drain of calcium and phosphorus in milk at the onset of lactation (Braun et al. 2012) or due to decreased feed intake during last few days preparturition as well as gastrointestinal tract stasis at parturition leading to a decrease of calcium available for absorption and subsequent hypocalcaemia (Peter and Ian  2008) beside  at first days after calving colostrum synthesis and secretion need a large amount of calcium leading to reduction of calcium in serum (Martinez et al. 2012). Milk fever is divided into three stages according to the severity of reduction of calcium level. The 1st stage or subclinical milk fever is characterized by slight clinical signs as slight muscle tremors in head and limbs (Houe et al. 2001), The 2nd stage occurs when there is a sever reduction in serum calcium level and the most prominent signs are subnormal body temperature, dry muzzle, cold extremities, reduction in ruminal movement, constipation and laying down with head turned into flank (Goff and Horst 1997). The 3rd stage characterized by lateral recumbency, comatosed animal and complete flaccidity and passive movement of limbs (Ramos et al. 2009). Administration of calcium solutions around calving either as oral drench or by intravenous injection play an important role in treatment and prevention of milk fever (Thilsing  et al. 2002).

The present study focused on evaluating the effect of milk fever on some haematobioche-mical, hormone, enzymes and antioxidant enzymes with trial of treatment

MATERIALS AND METHODS

1) Drug

  1. a) Calcium borogluconate: produced by Pfizer for chemical pharmaceuticals company Egypt.
  2. b) Phosphonic acid: produced from Intervet company for pharmaceuticals under the trade name of Tonophosphan and each 100ml contain sodium salt of 4-dimethylamine,2-methylphenyl-phosphonic acid 0.2 g.
  3. c) Vitamin D: produced by Interchemie company for veterinary medicines under the trade name of Vitol -140.

2) Animals:-

A total number of 15 buffaloes aged from 4-5 years old (5 healthy -10 suffering from milk fever in a private farm at Abu Hamad city (El- Sharkia Province) were used in this study. Buffaloes were divided into 3 groups (5/each).1st group is clinically healthy buffaloes (control), 2nd  buffaloes group are suffering from slight milk fever (tremors in head and legs) and treated by I/V injection of 500 ml of calcium borogluconate, along with I/V injection of 25 ml phosphonic acid /buffalo. The 3rd buffaloes group was suffering from a severe milk fever (depression, lateral recumbancy and unconsciousness) and treated by I/V injection of 500 ml calcium borogluconate and I/V injection of 25 ml phosphonic acid/buffalo beside I/M injection of 1.5ml/50 kg bwt vitamin D daily for 5 days. Three blood samples were taken from each buffalo at pretreatment and 5th days post treatment. The 1st blood sample was taken on a tube contained EDTA for estimation of blood picture (Jain 1986).

The 2nd blood sample was taken in a tube contained heparin for measuring of phagocytic cells% and killing cells % (Wilkinson 1977 and Lucy and Larry 1982).

The 3rd  blood sample was taken to obtain serum for estimation of total protein (Doumas et al 1981) albumin (Bauer 1982), protein fractions (Kaneko 1989), transaminases enzymes (AST-ALT) (Reitman and Frankel 1957), ALP(Kind and King 1954), calcium (Ca) (Gindler 1972), phosphorus (Ph) (Goldenberg 1966), magnesium (Mg)  (Gind1er and King 1971), potassium (K) (Oser 1979), glucose (Siet, et al 1981), Creatine kinase (CK) (Horder et al. 1989), Creatine phosphokinase (CPK)(Forster et al. 1974), lactate dehydrogenase (LDH) (Buhl and Jackson 1978), cortisol by radioimmunoassay method (Abraham et.al. 1972), parathyroid hormone (PTH) by radioimmunoassay Mayer et al. (1979), Superoxide dismutase (SOD) (Nishikimi et al 1972), catalase (CAT) (Sinha 1972), Malanodialdhyde (MDA) (Nielsen et al 1997), glutathione (GSH) (Ellman 1959) and glutathione peroxidase (GSH-px) (Palgia and Valentine 1967). 

3) Statistical analysis: - The obtained data were analyzed by using computerized SPSS program version 16 according (Tambane and Dunlop 2000).

                                                                   RESULTS

Buffaloes suffering from milk fever revealed significant reduction in calcium, phosphorus , α, β, globulins, SOD, CAT, GSH, GSH-px beside insignificant reduction in Mg, K, RBCs, Hb, PCV, lymphocytes, basophils, monocytes , total protein, albumin , total globulin coupled with significant increase in glucose, WBCs, neutrophils, eosinophils, cortisol, parathyroid, AST, ALT, ALP, CK, CPK, LDH, MDA associated with significant increase in γ globulins. Serum parameters were returned to nearly normal levels at 5th day post treatment (table 1- 5).

Table (1) Effect of milk fever and treatment on some serum mineral and glucose in buffaloes (n= 5)

577

 

GP 3

GP 2

GP 1

Groups

 

Parameters

5th day post treatment

Pre

treatment

5th day post

Treatment

Pre

Treatment

9.21±0.44b

4.38±0.75c

8.77±0.64b

4.21±0.64c

9.25±0.87a

Ca (gm/%)

4.97±0.89a

3.32±0.64b

4.89±0.74a

3.12±0.58b

5.56±0.63a

Ph (gm/%)

3.81±0.37a

3.85±0.44a

3.79±0.55a

3.70±0.71a

3.87±0.18a

Mg (gm/% )

4.90±0.59a

4.29±0.41a

4.89±0.36a

4.32±0.42a

5.21±0.68a

K (Meq/l)

71.06±0.93b

79.13±0.99a

71.89±0.55b

78.07±0.79a

72.41±0.87b

Glucose  (mg/dl)

Different superscripts (a, b and c) within the same row indicate significant differences at p < 0.05

 

 

 

 

 

Table (2) Effect of milk fever and treatment on blood picture in buffaloes (n= 5)

           

577

 

GP 3

GP 2

GP 1

Groups

 

Parameters

5th day post treatment

Pre

treatment

5th day post

treatment

Pre

treatment

6.79±0.89a

6.70±0.58a

6.77±0.55a

6.69±0.87a

6.84±0.38a

RBCs(106/c.mm)

12.97±0.95a

12.81±0.88a

12.94±0.68a

12.68±0.23a

13.63±0.71a

HB  (gm)

34.99±0.59a

34.89±0.78a

34.98±0.89a

34.87±0.91a

35.09±0.86a

PCV   (%)

8.23±0.92b

10.18±0.85a

8.67±0.89b

10.14±0.87a

8.30±0.83b

Total WBCs (103/c.mm)

3.30±0.61b

5.10±0.45a

3.74±0.55b

5.26±0.45a

3.23±0.41b

neutrophil

Differentia

(103/c.mm)

2.01±0.48a

2.10±0.35a

2.07±0.32a

2.02±0.41a

2.11±0.26a

lymphocyte

1.07±0.16a

1.21±0.12a

0.99±0.12b

1.29±0.15a

0.98±0.21b

eosinophil

0.90±0.12a

0.92±0.13a

0.91±0.14a

0.79±0.11a

0.97±0.19a

basophil

0.95±0.16a

0.85±0.17a

0.96±0.14a

0.78±0.16a

1.01±0.08a

monocyte

39.55±0.87a

40.98±0.54a

39.51±0.69a

40.98±0.65a

39.31±0.78a

%

Phagocytic

5.66±0.83a

5.81±0.46a

5.68±0.89a

5.80±0.49a

5.46±0.66 a

index

Different superscripts (a, b and c) within the same row indicate significant differences at p < 0.05

 

 

Table (3) Effect of milk fever and treatment on liver functions in buffaloes (n= 5)

577

 

GP 3

GP 2

GP 1

Groups

Parameters

5th day post treatment

Pre

treatment

5th day post

Treatment

Pre

treatment

6.30±0.69a

5.52±0.77a

6.45±0.89a

5.72±0.85a

6.55±0.97a

T. protein

Protein

profile (mg/dl)

3.19±0.55a

2.81±0.51a

3.26±0.87a

2.88±0.16a

3.32±0.38a

albumin

1.02±0.10a

0.72±0.11b

1.07±0.07a

0.75±0.08b

1.08±0.21a

α

globulin

0.95±0.13b

0.80±0.12b

0.99±0.09ab

0.79±0.08b

1.02±0.19a

β

1.14±0.17a

1.19±0.13a

1.13±0.17a

1.20±0.15a

1.13±0.13a

γ

3.11±0.46a

2.71±0.28a

3.19±0.69a

2.84±0.43a

3.23±0.51a

total

1.03±0.17a

1.04±0.17a

1.03±0.13a

1.02±0.12a

1.03±0.15a

A G ratio

25.04±0.97b

30.04±0.89a

23.18±0.61b

29.61±0.95a

22.58±0.33b

AST

Liver enzmes

(IU/L)

13.97±0.99b

18.93±0.99a

14.05±0.79b

18.77±0.87a

13.89±0.94b

ALT

48.62±2.99b

57.32±2.93a

48.08±2.87b

59.05±2.89a

43.62±2.43c

ALP

Different superscripts (a, b and c) within the same row indicate significant differences at p < 0.05

 

 

Table (4) Effect of milk fever and treatment on cortisol and parathyroid hormone in buffaloes (n= 5)

577

 

GP 3

GP 2

GP 1

Groups

 

Parameters

5th day post treatment

Pre

treatment

5th day post

Treatment

Pre

treatment

5.88±0.48b

12.34±0.33a

5.37±0.66b

12.44±0.54a

3.94±0.21c

Cortisol  (ng/ml)

4.76±0.95b

8.99±0.93a

4.67±0.94b

9.46±0.68a

3.97±0.89b

Parathyroid (ng/dl)

Different superscripts (a, b and c) within the same row indicate significant differences at p < 0.05

 

Table (5) Effect of milk fever and treatment on some enzymes and oxidation in buffaloes (n= 5)

577

 

GP 3

GP 2

GP 1

Groups

Parameters

5th day post treatment

Pre

treatment

5th day post

Treatment

Pre

treatment

87.04±0.79b

96.58±0.84a

86.07±0.83b

97.32±0.94a

84.36±0.69c

CK (IU/L)

250.84±3.89ab

265.72±3.93a

253.21±3.78b

264.21±3.83a

248.08±4.21c

CPK (IU/L)

420.65±2.27ab

459.12±20.54b

421.44±2.42ab

465.12±2.32a

412.08±2.13c

LDH (IU/L)

9.95±0.92b

12.08±0.79a

9.64±0.89b

12.41±0.99a

8.21±0.94ab

MDA (ml/nmol)

4.98±0.77a

3.15±0.73b

4.92± 0.81a

3.09±0.46b

5.18±0.89a

SOD (U/ml )

84.79 ± 0.87a

79.09 ± 0.69b

83.96 ± 0.a

78.32 ± 0.85b

85.21 ± 1.23a

CAT(U/mL)

22.76 ± 0.46b

18.10 ± 0.33c

22.17 ± 0.87b

17.87 ± 0.62c

24.35 ± 0.52a

GSH

4.99± 0.55a

3.97± 0.63b

5.08± 0.78a

3.65± 0.36b

5.36± 0.56a

GSH-px

Different superscripts (a, b and c) within the same row indicate significant differences at p < 0.05

                                                           

                                                         

 

                                                           Discussion

The main clinical signs observed in animals suffering from milk fever were, in a slight stage, subnormal body temperature, deprived appetite, tremors in the head and legs, protrusion of the tongue, and grinding of teeth, but in a severe case, depression, lateral recumbency, and unconsciousness. The above-mentioned observed clinical signs were previously supported by Abd El-Raof and Mobarak (2006), who found that cattle suffering from milk fever showed a subnormal rectal temperature beside depression, lateral recumbency, and unconsciousness. Same clinical signs were observed by Hassan et al. (2020) in cows suffering from milk fever.


Our findings revealed that buffaloes suffering from milk fever revealed a significant decrease in calcium and phosphorus levels along with a significant increase in glucose levels when compared with healthy control buffaloes. Reduction of calcium in diseased buffaloes may be due to the drain of calcium to the mammary gland at a rate greater than intestinal calcium absorption and high calcium demand following the onset of lactation (Goff and Horst 1997). Elevation in glucose level may be related to the fact that hypocalcemia prevents the secretion of insulin (Radostitis et al., 2000). Milk fever is characterized by a significant decrease in calcium and phosphorus (Beede et al.., 2001).  A close similarity was seen between these findings and those obtained by Lean et al. (2006), who indicated that milk fever in cattle induced a significant reduction in calcium and phosphorus and an elevation in glucose levels. Milk fever induces a significant decrease in calcium, inorganic phosphorus, and magnesium (Hassan, et al. 2020). These reductions in calcium, phosphorus, and magnesium levels and elevations in glucose levels were observed previously by Sweety and Pradeep (2021) in buffaloes suffering from milk fever. Our findings were in agreement with those obtained by Kulajit and Chayanika (2023), who stated that milk fever in buffaloes is associated with a reduction in calcium and phosphorus and an elevation in glucose levels.                                         

 In the present investigation, it has been shown that milk fever in buffaloes revealed a non-significant decrease in RBCs, Hb, PCV, lymphocytes, basophils, and monocytes, along with a significant increase in WBCs, neutrophils, and eosinophils, and an insignificant increase in phagocytosis%  index when compared with control healthy buffaloes. Elevation in leukocytic count, eosinopenia, neutrophilia, and lymphopenia were observed in buffaloes suffering from milk fever due to increased adrenocortical hormone activities in response to the stress of hypocalcemia and parturition (Berger and Gerber 1997). Cattle affected by milk fever showed leukocytosis, eosinopenia, neutrophilia, and lymphopenia (Coles 1997). Our observed data fit with those reported by Abd El-Raof and Mobarak (2006), who reported that cows suffering from milk fever showed a reduction in erythrocytic count, hemoglobin, packed cell volume levels, and an elevation in the counts of leukocytes. Our results are supported by Hassan et al. (2020), who recorded that milk fever induced a non-significant decrease in RBCs, Hb, PCV, lymphocytes basophils, and monocytes, coupled with an increase in WBCs and neutrophils.           

 

The present work declared that diseased buffaloes showed an insignificant decrease in total protein, albumin, and total globulin, along with a significant decrease in α and β globulin associated with an insignificant increase in γ globulin compared with control healthy buffaloes. These results are comparable with those obtained previously by Feitosa and Brigle (2000), who observed a significant reduction in serum total proteins and protein fractions (albumin, α, β, and total globulin) along with a non-significant increase in γ globulin in cattle suffering from milk fever. Our results go hand in hand with those reported by Abd El-Raof and Mobarak (2006), who reported that the serum protein profile is significantly decreased in cattle suffering from milk fever. This finding is closely aligned with Hassan et al. (2020), who found that local cows suffering from milk fever showed a significant decrease in total proteins, albumin, α, and β globulins.                               

Biochemical analysis of buffaloes suffering from milk fever indicated a significant increase in cortisol and parathyroid hormones as compared with control buffaloes, and this agreed with Horst et al. (1997) and Radostitis et al. (2000), who stated an elevation in parathyroid and cortisol hormones in cattle affected by milk fever.               

In the present study, it has been shown that milk fever resulted in a significant increase in AST, ALT, ALP, CK, CPK, and LDH when compared with control healthy buffaloes, which may be explained by Hanif et al. (1990), who stated that hypocalcemia is associated with increased liver and muscle enzyme activity due to degenerative change and necrosis of the liver and muscles of cattle suffering from milk fever. Similar findings were recorded by Yamagishi et al. (1999), who stated that milk fever cows show a significant increase in muscle enzymes (CK, CPK, and LDH). In keeping with these lines, (Lopes 1999) observed that serum levels of muscle enzymes were increased in hypocalcaemia. These results were in harmony with Bogumiła et al. (2012), who stated that liver and muscle enzymes were decreased in the sera of cows suffering from hypocalcaemia. Elevation in activity of AST, ALT, ALP, CK, and CPK in hypocalcaemic buffaloes coincided with De Garis and Lean (2018) and Hassan et al. (2020), who stated that milk fever induced a significant increase in serum AST, ALT, ALP, CK, CPK, and LDH .                          

In the present study, the analytical findings of the serum constituents of buffaloes suffering from milk fever revealed a significant reduction in SOD, catalase, GSH, and GSH-px, along with an elevation in MDA, compared with control healthy buffaloes. Our results were in agreement with Hanif et al. (1990), who stated that hypocalcemia is associated with an increase in MDA and a reduction in anti-oxidant enzymes. In the same direction, Thilsing et al. (2002) reported that milk fever induced a decrease in antioxidant enzymes alongside an increase in MDA. The same changes in GSH and GSH-px were observed by Bogumiła et al. (2012) in sera of cows suffering from hypocalcaemia. Also,  Puppel and Kuczynska (2016) stated that milk fever induced a reduction in CAT, SOD, and GSH.                                                   

It has been shown that treatment of diseased buffaloes with calcium borogluconate and phosphonic acid resulted in improved health status, and the hematobiochemical parameters returned to nearly normal levels at the 5th day post-treatment when compared with control healthy buffaloes. These improvements in the health status and hematobiochemical parameters may be due to improved blood calcium and phosphorus in diseased buffaloes (Radostitis et al. 2000). These results were supported by the studies of Abd El-Raof and Mobarak (2006) and Hassan et al. (2020), which showed that cows suffering from milk fever and treated with calcium and phosphorus revealed improved health status and hematobiochemical parameters.

Summarizing our observations, it could be concluded that milk fever in buffaloes induced some adverse effects in hematobiochemical parameters and the oxidation reduction potential profile of these animals, and treatment of the diseased buffaloes with calcium borogluconate, phosphonic acid, and vitamin D induced a great reduction of the adverse effects of milk fever.                                                               

Abd El-Raof Y, Mobarak, M. 2006. Hematobiochemical and pathological exam-ination on some cases suffering from milk fever. 8th Sci.Vet. Med. Zag.:321-334.
Abou-Bakr S. 2009 Genetic and phenotypic trends of 305-day milk yield of cows raised at commercial farm in Egypt, Egyptian J. of Animal Production, 46: 85-92.
Abraham G, Buster J, Taller R. 1972. Radioimmunoassay of plasma cortisol. Anal. Lett, (5): 757.
Bauer J 1982. Determination serum albumin Clinical Labor. Methods 4th Ed 95-96 .
Beede D, Pilbean T, Tempelman R.2001. Peripartum responses of cows fed graded level of calcium and chloride 3 weeks before calving, J. of Dairy Sci. 84 :83-87. Doi: 87a412db29d71297-MRS
Berger U, Gerber H. 1997. Experimental hypocalcemia in cows, its effect on haematological parameters. Schw. Archive Fur. Tierheilkunde 119, 9.
Bogumiła P , Dorota J , Agnieszka T,  Renata P, Agnieszka T , Magdalena S. 2012 Selenium Concentration and Glutathione Peroxidase (GSH-Px) Activity in Serum of Cows at Different Stages of Lactation. Biol Trace Elem Res 147:91–96. Doi: 10.1007 /s12199-007-0019-4
Braun U, Blatter M, Hässig M. 2012. Treatment of cows with milk fever by intravenous and oral calcium and phosphorus. Schweiz Arch Tierheilkd, 154(9)81-88. DOI:https/ /doi.org/10.1024/0036-7281/a000368
Buhl S, Jackson K. 1978. Determination of serum lactate dehydrogenase. Clin. Chem.; 24: 828.
Coles, E 1997. Veterinary clinical pathology.1st Ed.WB.Saunders comp Philadelpha & London.
De Garis D, Lean J 2018.  Milk fever in dairy cows. A review of pathophysiology and control principles. The Vet. J (176) 1 160-169. DOI: 10.1016/j0jvi 2017.12..029
Doumas B, Carter R, Peers T, Schaffer R 1981. Method for determiination of total protein in serum.Clin.Chem.27.1642.
Ellman G 1959.  Tissue sulfhydryl groups. Arch. Bio. Bioph. 74:214–226.
El-Salam M, El-Shibiny S. 2011. A comprehensive review on the composition and properties of buffalo milk, Dairy Science & Technology, 91(6) 663-669. DOI: 10.107/s 19594-011-0029-2
Feitosa F.  Brigel E. 2000. Concentrations of immunoglobulins G and M, proteins and electrophoretic fractions and activity of gammaglutamyl transferase in the sera of  cows before and after parturition.Arq. Brasil de Med. Vet-Zoot.,52 (4):176-182.PMID: 3826853.
Forster G, Bernt E. Bergmeyer H. 1974.  Methods of Enzymatic Analysis (Bergmeyer, HU ed) Volume II, 2nd ed, 78-79, Academic Press, Inc, New York, NY
Gindler E. 1972. Determination of serum calcium level. Am. J. Clin, Path. (58) 37.
Gind1er E, King D 1971. Determination of serum magnesium Clin Chem.17.    
Goff J, Horst R. 1997. Effect of potassium or sodium, but not calcium to prepartum rations on milk fever in dairy cows. J.Dairy Sci. 80: 176-186.
Goldenberg, H 1966. Colorimetric determination of serum inorganic phosphorus using a single reagent. Clin.Chem.12:871.
Hanif K, Week F, Chandler L 1990.  Hypocalcemia associated muscular weak-ness and recumbency in beef cows Canadian Vet. J. 31 (1): 34-35.
Hassan S, Hassan Q, Alhamo T, Al-Obaidi M, Al-Iraqi D, Alhamo, S. 2020. Clinical, hematological and serum biochemical alterations in local cows affected with milk fever in Gogjalee Region, Mosul, Iraq. Egypt. J. Vet. Sci.51 (2)143-151. Doi: 10.21608/ejvs 2020. 19294.1120
Hernández L , Nally  J , Bambou J., de Almeida  A. 2019 .Dairy science and health in the tropics: challenges and opportunities for the next decades, Tropical Animal Health and Production, 51 :1009-1017. https://doi.org/10.1007/s11250-019-01866-6
Horder M, Elser R, Simpson E. 1989. IFCC method for measurement of catalytic enzymes Method for creatine kinas (ATP) N-phosphotransferase, J IFC.1:30-39. Doi: 10.1155 /S1463924690000049
Horst R, Goff P, Reinhardt T, Buxton D. 1997. Strategies for Preventing Milk Fever in Dairy Cattle. J of Dairy Sci., 80(7):126-132https/doi.org/10.3168/jds.S022-0302 (97)7606-9
Houe H, Ostergaard S, Blom Y. 2001. Milk fever and subclinical hypocalcemia-An evaluation of parameters on incidence risk, diagnosis, risk factors and biological effects as inputs for a decision support system for disease control. Acta Vet. Scand. 42:1–29.
Jain N. 1986. Schalm’s Vet Haematology 4th Ed. Lea & Fibiger Philadelphia USA.
urn:lcp:schalmsveterinar5theunse:epub:b07ce5e8-1741-4b48-8c17-7f5cbeb5bb41
Jesse P. 2018. Monitoring, prevention and treatment of milk fever in dairy cows.The Vet. J. 176 (1):50-75. DOI:10.1016/j.tvji 2007. 12.020
Kaneko J.  1989.  Clinical biochemistry of domestic animals 4th Ed., by Academic press Inc. New York, Boston, London, Tokyo.
Kind  P, King E. 1954. Determination of alkaline phosphatase J. Clin. Path. 7: 322.
Kulajit K, Chayanika M. 2023 .Successful treatment of milk fever in a buffalo: A case report. Pharma Innovation J. 2023;12(1) 188-189. https:/www. thepharma j.com
Lean I, Garis P, McNeil D, Block E. 2006. Hypocalcemia in dairy cows: Meta-analysis and dietary cation anion difference theory revisited. J Dairy Sci (89):669-684. https:// doi.org/10.3168/jds.s0022-0302(06)72130-72146 
Laurent M, Alexander T. 2007. Milk fever and alert cows: Does hypophosdph-atemia affect the treatment response. Can. Vet. J., (48): 487-491.
Lopes R, Kohayagawa A. Gentile L. 1999. Serum levels of muscles enzymes in cows suffering from “Downer cow Syndrome” Veterrinaria Noticias, 5 (2): 75-78.
Lucy F, Larry D. 1982.  Ontogeny and line differences as in mitogenic responses of chicken lymphocytes. Poul Sci. (62): 579-594.
Martinez N, Risco CA, Lima FS, Bisinotto RS, Greco LF, Ribeiro ES, Maunsell F, Galvão K, Santos J 2012. Evaluation of peripartal calcium status, energetic profile, and neutrophil function in dairy cows at low or high risk of developing uterine disease. J. Dairy Sci. 2012; 95:7158–7172. Doi: 10.3168/jds.2012-5812.
Mayer G, Keaton J, Moor M 1979.  Effect of epinephrine on PTH secretion in calves. Endocrinology, (104): 118-1187.
Nielsen F, Mikkelsen B, Grandjean P 1997. Plasma malondialdehyde as biomarker for oxidative stress. Clin Chem 43(7)29-30.
Nishikimi M, Appaji A, Yagi K 1972. Occurrence of superoxide anion in reaction of reduced phenazin methosulfat, molecular oxygen. Bio Chem Bio Res Com 46 (2): 49-54.
Oser B 1979 .Hawks physiological chemistry. 14th ed MCGraw Hill comp, Ltd, London.
Palgia D, Valentine W 1967.Studies on quantitative and qualitative characteriza-tion of erythrocyte glutathione peroxidase. J of Lab. and Clinical Med 70 (1):58 -69.
Peter J, Ian J. 2008. Milk fever in dairy cows .A review of pathophysiology and control principles. The Vet. J. (176) 1: 58-69.
Puppel K., Kuczyńska B. 2016. Metabolic profiles of cow’s blood; a review. J. Sci. Food Agric. (96):4321–4328.
Radostitis D, Gay C, Blood D, Hinchlift K. 2000. A text book of the diseases of cattle, sheep, goats and horse”.9th Ed. Bailliere Tindall, London.
Ramos J, Theming, Overton R. 2009. Effects of anion supplementation to low-potassium prepartum diets on macromineral status and performance of periparturie-nt dairy cows. Dairy Sci.(92):5677-5691. https://doi.org/10.3168/ jds.2009-2378
Reitman S, Frankel S. 1957. Colorimetric determination of SAST, SALT enzymatic activity.  An .J. Clin. Path, 28:56.
Seifi A, Mohri M, Kalamati J.  2004. Use of prepartum urine pH to predict the risk of milk fever in dairy cows. The Vet J (167) 3,281-285. https/doi.org/10.1016 /s1090-233(3) 0114-x 
Sinha K. 1972.  Colorimetric assay of catalase. Anal Biochem; (47): 89-94.
Siet G, Henny J, Schiele F 1981. Interpretation examens de laboratio.Karga Ed 26.
Sweety D, Pradeep K. 2021. Hypocalcemia (Milk fever) in buffalo: A case report. The Pharma Innovation Journal 2021; SP-10(11): 2474-2475. http://www. thepharma journal.com
Tambane, Dunlop 2000. Statistics and Data Analysis from Elementary Interme-diate. Prentic Ajitc. Tampbne Dorothy Dunlop, 2000.
Thilsing, H.; Jørgensen I, Østergaard, S. 2002. Milk Fever Control Principles: A Review. Acta Vet Scand. 43(1) 1–19. (Published online 2002 Mar 31. doi: 10.1186/ 1751- 0147-43-1)
Wilkinson P 1977. Technique clinical immunology Ed Thompson Publications USA.
Yamagishi N, Ogawa K. , Naito Y. 1999. Pathological changes in the myocardium of hypocalecmic parturient cows. Vet. Rec. January, pp. 67-72.