Endocrine control of estrous cycle in mithun (Bos frontalis)

Dhali, A.; Mech, A.; Karunakaran, M.; Rajkhowa, C.

doi:10.1016/j.theriogenology.2005.05.002

Cited by 15 publications

(20 citation statements)

References 17 publications

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“…Mithun (Bos frontalis) is a unique bovine species and believed to be the domesticated form of wild gaur (Simoons, 1984). This species is mainly found in the North-Eastern hilly region of India and neighbouring countries (Dhali et al, 2009). It is mainly reared as a meat animal.…”

Section: Discussionmentioning

confidence: 99%

“…It is mainly reared as a meat animal. Additionally, it plays an important role in the socio-economic life of its rearers (Dhali et al, 2009). This animal is unique physically, physiologically and genetically in relation to cattle (Dhali et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, it plays an important role in the socio-economic life of its rearers (Dhali et al, 2009). This animal is unique physically, physiologically and genetically in relation to cattle (Dhali et al, 2009). Therefore, the establishment of passive immunity in newborn calves of this species could be different from that observed in cattle calves.…”

Section: Discussionmentioning

confidence: 99%

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Effect of method and time of first colostrum feeding on serum immunoglobulin concentration, health status and body weight gain in mithun (Bos frontalis) calves

Mech

Dhali

Baruah

et al. 2010

Animal Physiology Nutrition

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The effect of method and time of first colostrum feeding on the concentration of serum immunoglobulin (Ig) was evaluated in mithun (Bos frontalis) calves. The hypotheses were that the variable method and time of first colostrum feeding might affect the level of serum Ig and in turn the growth performance and health status of the claves during the early age. The newborn calves were randomly allotted to one of the four experimental groups - G-1: allowed to suckle the dam at own choice, G-2: separated immediately after birth and allowed to suckle the dam first at 6 h and then at own choice, G-3: bottle fed ad libitum colostrum of its own dam first at 6 h and then at 6-h intervals until 24 h, G-4: bottle fed ad libitum colostrum of its own dam within 1 h, at 6 h and then at 6-h intervals until 24 h. The concentrations of IgG, IgM, and IgA were lowest (p < 0.01) at birth and increased following colostrum feeding irrespective of the experimental group. Highest concentrations of all the Ig classes were observed at 12-24 h after birth. The concentrations then transiently decreased from day 7 to 14, and then steadily increased after day 28. The concentrations of IgG (p < 0.01) and IgA (p < 0.05) were higher in G-1 in relation to the other groups during the first week after birth. Similarly, higher concentration of IgA (p < 0.05) was found in G-1 in relation to the other groups during the rest of the experimental period. The apparent absorption efficiency of colostral IgG was higher (p < 0.05) in G-4 in relation to G-3. Growth rate and health status were not influenced by the method and time of first colostrum feeding. In conclusion, a 6-h delay in the first colostrum feeding reduced the level of serum Ig noticeably.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effect of method and time of first colostrum feeding on serum immunoglobulin concentration, health status and body weight gain in mithun (Bos frontalis) calves

Mech

Dhali

Baruah

et al. 2010

Animal Physiology Nutrition

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“…The plasma FSH concentration was measured using a validated radioimmunoassay protocol for mithun plasma described previously by Dhali et al. (2005a)).…”

Section: Methodsmentioning

confidence: 99%

“…The changes in the secretion patterns of LH, FSH, P4 and E2 during oestrus are well established in cattle (Hafez and Hafez 1993; Peters and Ball 1995). Recently the daily variation in the plasma LH, FSH, E2 and P4 concentrations have been established in mithun estrous cycle (Dhali et al. 2005a).…”

Section: Introductionmentioning

confidence: 99%

Changes in Plasma Concentrations of LH, FSH, Estradiol 17‐β and Progesterone During Oestrus in Mithun (Bos frontalis)

Dhali

Mishra

Mech

et al. 2006

Reprod Domestic Animals

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The objective of the present study was to establish the changes in plasma concentrations of LH, FSH, estradiol 17-beta (E2) and progesterone (P4), as well as to understand their temporal relationships during oestrus in mithun (Bos frontalis). The experiment was conducted on 11 mithuns during third or fourth postpartum oestrous cycle. Since oestrus onset the jugular vein blood samples were collected every 2 h for 72 and 96 h, respectively from the animals without and with standing heat. The LH, FSH, E2 and P4 concentrations were estimated in plasma. The P4 concentration was fluctuated throughout the oestrus period and the average P4 concentration was found significantly (p<0.05) lower on the day of oestrus onset. The multiple rises in LH and FSH concentrations above the basal level in spike like fashion were observed throughout the oestrus period irrespective of the occurrence of standing heat. A significant (p<0.01) gradual increase in the average daily E2 concentration was observed till day 2 following oestrus onset irrespective of the occurrence of standing heat. A significant (p<0.05) simultaneous increase in LH, FSH and E2 concentrations and a transient increase in P4 concentration at approximately the time of standing heat onset were observed. During investigation a definite temporal coupling between LH and FSH rises was absent throughout the oestrus period. The results suggest that (1) the multiple short-duration low-amplitude LH and FSH surges during oestrus may be crucial for the final maturation of ovulatory follicle and subsequent ovulation in mithun; (2) a differential mechanism for controlling LH and FSH secretions probably exists in mithun.

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Noninvasive monitoring of steroid hormone production and activity of zoo-housed banteng (Bos javanicus)

Kozlowski

Bauman

Clawitter

et al. 2022

Animal Reproduction Science

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Endocrine control of estrous cycle in mithun (Bos frontalis)

Cited by 15 publications

References 17 publications

Effect of method and time of first colostrum feeding on serum immunoglobulin concentration, health status and body weight gain in mithun (Bos frontalis) calves

Effect of method and time of first colostrum feeding on serum immunoglobulin concentration, health status and body weight gain in mithun (Bos frontalis) calves

Changes in Plasma Concentrations of LH, FSH, Estradiol 17‐β and Progesterone During Oestrus in Mithun (Bos frontalis)

Noninvasive monitoring of steroid hormone production and activity of zoo-housed banteng (Bos javanicus)

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