Endocrine markers for identifying prolificacy potential and predicting fetal number in goats

Haldar, Avijit; Pal, Shantanu; Chakraborty, Sandip; Hazorika, Mausumi; Pan, Subhransu; Majumdar, D.; Biswas, C.K.; Patra, Aditi; Mirmahmoudi, R.; Prakash, B.S.

doi:10.1016/j.anireprosci.2013.05.005

Cited by 12 publications

(9 citation statements)

References 40 publications

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“…Hence, the assay indicated what amount of plasma was used to measure AMH in goat plasma. (Haldar et al 2013). The question was whether GnRH could influence ovarian secretion of AMH in goats.…”

Section: Results and Discussion Bamh Parallelism With Goat Plasma Amhmentioning

confidence: 99%

“…with GnRH @ 0.25 g/ kg body weight (Receptal®, M/s. Intervet, India) as this dosage of GnRH previously elicited a large increase in plasma FSH and LH in goats (Haldar et al, 2013). The serial blood samples were collected in heparinised tubes on -60, -30, 0 min (0 being the time of GnRH administration) and then every 30 min interval for 9 h post GnRH administration.…”

Section: Methodsmentioning

confidence: 99%

“…Plasma FSH concentration in GnRH treated goats was quantified by an EIA using commercially available kit for ovine (M/s. Endocrine Technologies, Inc., USA), as adopted previously (Haldar et al 2013). The sensitivity of the assay for FSH was 0.5 ng/ml.…”

Section: Farm Animals and Blood Samplingmentioning

confidence: 99%

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Age-specific peripheral anti-müllerian hormone concentrations in goats (capra hircus)

Haldar

Singh

et al. 2018

IJAR

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Anti-Mullerian hormone (AMH) appears to be the best biochemical-endocrine marker in assessing the age-related decline of the ovarian follicular reserve. There is inadequate information on age-related changes in peripheral AMH concentrations in goats (Capra hircus). The present study thus aimed (i) to investigate the responsiveness of the ovary to gonadotrophin releasing hormone (GnRH) challenge to release plasma AMH into circulation in view of addressing the question whether ovarian secretion of AMH would be affected by gonadotrophic status in goats and (ii) to determine plasma AMH concentrations at different ages in goats (n= 82) using enzyme immune-assay technique. Data on hormonal concentrations in GnRH-treated animals as well as in different ages of animals were analyzed by nonparametric one-way repeated measure ANOVA and one-way ANOVA, respectively. There was no change (P>0.05) of plasma AMH concentrations after GnRH challenge in experimental goats. Plasma AMH concentrations changed significantly (P<0.05) between the mean rank of the related groups over the time (age) in goats. Plasma AMH concentration at 3 months of age was 0.36 ± 0.04 ng/ ml and thereafter it started increasing and reached  2 ng/ ml between 3 and 4 years of age and then showed a progressive decline from 5 years of age and reached at 0.30 ± 0.07 ng/ ml at 10 years of age. A cubic model was found to be the best fitted model that delineated the change of plasma AMH level with age. Hence, the present study indicated that peripheral AMH concentration could be a useful management tool for the selection of goats in breeding programmes.

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Section: Results and Discussion Bamh Parallelism With Goat Plasma Amhmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Age-specific peripheral anti-müllerian hormone concentrations in goats (capra hircus)

Haldar

Singh

et al. 2018

IJAR

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“…Goat's age effect can be explained by the fact that younger females, which did not achieve their development, including that of the mammary gland, must cover their nutritional needs of growth, in addition to those of maintenance and lactation (Carvalho, Freitas, Valente, & Azevedo, 2001). The effect of litter size on DMY can be attributed to the quantity of hormones preparing the udder to lactation phase which differs from females carrying multiples to those carrying singles (Haldar et al, 2013), thus affecting the milk production after delivery.…”

Section: Discussionmentioning

confidence: 99%

Milk production and its relationship with milk composition, body and udder morphological traits in Bedouin goat reared under arid conditions

Kouri

Charallah

Kouri

et al. 2018

Acta Sci. Anim. Sci.

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This research aims to assess the performances of lactating Bedouin goat under arid conditions, focusing on the relationship of milk yield with body and udder morphology and growth traits. Fourteen goats and their kids were followed during early lactation (90 days post-partum). Mean daily milk yield was 0.56 kg. Milk fat, proteins, lactose, solids non-fat and minerals were respectively 34.9, 38.9, 48.8, 107 and 6.7 g L-1. Mean kids’ birth weight, adjusted body weight at 90 days of age and average daily gain were respectively 2 kg, 6.6 kg and 51.4 g day-1. Daily milk yield was correlated with goats’ body weight, withers height, rump height, udder width and udder circumference but not with linear udder score and growth performances. These results provide important data about the milk production of Bedouin goat emphasizing its correlation with body and udder morphological traits which can help to elaborate a specific breeding program for this breed.

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“…This procedure generated a discriminant function using canonical discriminant function coefficients based on linear combinations of the predictor variables that provided the best discrimination between the sampling time points. The stepwise discriminant function analysis used in this study has been described elsewhere [20]. The discriminant function analyses produce a set of different values like eigenvalues, Wilks' Lambda and canonical correlation values.…”

Section: Statistical Analysesmentioning

confidence: 99%

Assessment of pregnancy-associated glycoprotein profile in milk for early pregnancy diagnosis in goats

et al. 2021

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Objective: This study was conducted to assess the level of pregnancy-associated glycoprotein (PAG) in whole and skim milk samples, and its suitability for early pregnancy diagnosis in goats.Methods: A two-step sandwich enzyme-linked immunosorbent assay (ELISA) system for estimation of milk PAG was developed and validated, which employed caprine-PAG specific polyclonal antisera. Whole and skim milk samples (n = 210 each) from fifteen multiparous goats were collected on alternate days from d 10 to d 30, and thereafter weekly till d 51 postmating. PAG levels in milk samples were estimated by ELISA and the pregnancies were confirmed at d40 post-mating by transrectal ultrasonography (TRUS).Results: The level of PAG in whole and skim milk samples of both pregnant and nonpregnant goats remained below the threshold values until d 24 after mating. Thereafter, PAG concentration in whole and skim milk increased steadily in pregnant goats, whereas it continued below the threshold in non-pregnant does. The PAG profiles in whole and skim milk of pregnant goats were almost similar and exhibited strong positive relationship (r = 0.891; p<0.001). Day 26 post-mating was identified as the first time-point for significantly (p<0.05) higher milk PAG concentration in pregnant goats than to non-pregnant goats. When compared to TRUS examination for pregnancy diagnosis, the accuracy and specificity of PAG ELISA using whole and skim milk samples were 94.5% and 95.4%; and 95.3% and 100%, respectively. The high values of area-under-curve (0.904 [whole milk] and 0.922 [skim milk]), demonstrate outstanding discrimination ability of the milk assays. Among the sampling dates chosen, d 37 post-mating was identified as the best suitable time point for collection of milk samples to detect pregnancy in goats.Conclusion: The PAG concentration in whole and skim milk of goats collected between days 26 and 51 post-breeding can be used for the accurate prediction of pregnancy and may be useful for assisting management decisions in goat flocks.

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Endocrine markers for identifying prolificacy potential and predicting fetal number in goats

Cited by 12 publications

References 40 publications

Age-specific peripheral anti-müllerian hormone concentrations in goats (capra hircus)

Age-specific peripheral anti-müllerian hormone concentrations in goats (capra hircus)

Milk production and its relationship with milk composition, body and udder morphological traits in Bedouin goat reared under arid conditions

Assessment of pregnancy-associated glycoprotein profile in milk for early pregnancy diagnosis in goats

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