Lack of effect of melatonin on ovarian function and response to estrous synchronization and fixed-time AI during the nonbreeding season in lactating dairy buffalo (Bubalus bubalis)

Carvalho, N. A. T.; Carvalho, Júlia Gleyci Soares de; Souza, Diego Cavalcante de; Madureira, Ed Hoffmann; Filho, Manoel Francisco de Sá; Sales, J. N. S.; Ghuman, S. P. S.; D’Occhio, Michael J.; Baruselli, Pietro Sampaio

doi:10.1016/j.anireprosci.2021.106796

Cited by 7 publications

(4 citation statements)

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“…The obtained results of ovulation rate also indicated a positive relationship with melatonin administration. This observation aligns with claims reported in sheep ( 43 , 44 ) and buffaloes ( 45 ). On the contrary, Sweeney and O’Callaghan ( 46 ) did not find any improvement in ovulation rate following melatonin administration.…”

Section: Discussionsupporting

confidence: 92%

“…On the contrary, Sweeney and O’Callaghan ( 46 ) did not find any improvement in ovulation rate following melatonin administration. The influence of melatonin administration on intervals between 2 nd GnRH administration and ovulation in the current study corresponds with previous observations in buffaloes ( 45 ). The previous studies indicated an increasing trend of ovulatory follicles in heifers and lactating buffaloes after melatonin treatment along CIDR application ( 18 , 19 ) or Ovsynch protocol ( 45 ).…”

Section: Discussionsupporting

confidence: 92%

“…The influence of melatonin administration on intervals between 2 nd GnRH administration and ovulation in the current study corresponds with previous observations in buffaloes ( 45 ). The previous studies indicated an increasing trend of ovulatory follicles in heifers and lactating buffaloes after melatonin treatment along CIDR application ( 18 , 19 ) or Ovsynch protocol ( 45 ). A similar pattern of ovulatory follicles was observed in the present study when crossbred buffaloes were synchronized with modified Ovsynch protocol.…”

Section: Discussionsupporting

confidence: 92%

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Administration of melatonin prior to modified synchronization protocol improves the productive and reproductive efficiency of Chinese crossbred buffaloes in low breeding season

et al. 2023

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IntroductionMelatonin is a neurohormone involving various biological processes, including restoration of cyclicity in animals with seasonal breeding patterns. The use of melatonin in different forms has gained broader acceptance in different species, particularly in summer anestrous buffaloes.ObjectivesThe objective of the current study was to evaluate the melatonin effect on the reproductive and productive performance of crossbred buffaloes during the low breeding season.MethodsSixty-five cyclic and reproductively sound crossbred buffaloes were randomly allocated to three groups: the G1 (n = 20) served as the control group and received no single melatonin, G2 received melatonin (n = 22; 18 mg/50 kg, body weight) once prior to synchronization and G3 group was administered multiple melatonin injections (n = 23; 6 mg/50 kg body weight) for three consecutive days before the start of the synchronization protocol. The reproductive performance, milk yield traits, and serum immunoglobulin M (IgM) and melatonin levels were evaluated in treated and untreated crossbred buffaloes.ResultsThe results revealed that a single dose of melatonin administration has (p < 0.05) improved estrus response, ovulation occurrence and follicular growth in crossbred buffaloes compared to control groups. Higher pregnancy rates were observed in both melatonin-treated buffalo groups compared to the control. Following the administration of melatonin, serum IgM level increased in G2 and G3; however, an increment in melatonin level (p < 0.05) was detected in the G2 group only as compared to the control group subsequent day of melatonin administration. The milk compositions were not affected by melatonin administration except for milk urea nitrogen and somatic cell count (SCC). The melatonin administration (p < 0.05) decreased the somatic cell count in buffalo milk compared to untreated.ConclusionIn conclusion, single or multiple doses of melatonin before initiating the synchronization protocol improved the ovulation, ovulatory follicle diameter and pregnancy rates in crossbred buffaloes during the low breeding season. Moreover, the administration of melatonin enhanced the IgM values along milk traits in terms of milk protein, MUN and somatic cell count in treated buffaloes.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

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Administration of melatonin prior to modified synchronization protocol improves the productive and reproductive efficiency of Chinese crossbred buffaloes in low breeding season

et al. 2023

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“…Entrepreneurial psychology is a comprehensive long-term psychological quality, which is formed under different educational and growth environments and can support and guide an individual's entrepreneurial behaviors. Besides, a comprehensive and integral entrepreneurial psychology can help individuals complete entrepreneurial behaviors (Carvalho et al, 2021 ). Entrepreneurial psychology includes four aspects: entrepreneurial awareness, entrepreneurial volition, entrepreneurial ability, and entrepreneurial personality.…”

Section: College Students' Entrepreneurial Psychologymentioning

confidence: 99%

The Effect of Law Students in Entrepreneurial Psychology Under the Artificial Intelligence Technology

Zhang

2021

Front. Psychol.

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With the increasingly serious employment situation in China, the government and schools encourage college students to start businesses to alleviate employment pressure. College student's successful entrepreneurship depends on national preferential policies, social support, and, most importantly, their healthy and solid psychological quality and entrepreneurial psychological quality. The purpose is to understand the entrepreneurial psychology of college students and study the entrepreneurial psychological effect. Firstly, the four aspects of entrepreneurial psychology are summarized, including entrepreneurial awareness, entrepreneurial volition, entrepreneurial ability, and entrepreneurial personality. Secondly, the research status of college students' entrepreneurial psychology is reviewed, and the existing problems are pointed out. Thirdly, the combined model of wavelet transform and Neural Network (NN) is proposed, and the feasibility of the proposed model is evaluated through the analysis of college students' entrepreneurial psychology. The wavelet NN is used in experimental design to predict college students' entrepreneurial psychology, and the predicted results are compared with the actual value. From the perspective of the prediction results of entrepreneurial psychology, the combination of wavelet algorithm and neural network is more accurate for entrepreneurial psychology prediction and evaluation results of law students. Overall, the difference between the predicted value and the actual value is within 0.3 points, which is relatively stable. According to the analysis of single-factor results, the scores of students of different majors in the four dimensions of entrepreneurial psychology are all higher than 3.5, but there is no significant difference among the four dimensions (P > 0.05), indicating that the major has no significant impact on entrepreneurial psychology; law students with different educational backgrounds have significant differences in entrepreneurial psychology (P < 0.05), among which students with a master's degree have the strongest entrepreneurial will, while doctoral students have the lowest entrepreneurial will; in terms of entrepreneurial psychological capital, men's self-efficacy is higher than women's, and the difference is significant (P < 0.05). The difference between males and females in the scores of entrepreneurial psychological factors' four aspects is not very obvious. In terms of entrepreneurial psychological capital, males' self-efficacy is significantly higher than females' (P < 0.05). Artificial Intelligence (AI) technology has great application prospects in the prediction and evaluation of college students' entrepreneurial psychology, and college students' entrepreneurial psychology is highly correlated with gender and education.

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Review: Development, adoption, and impact of assisted reproduction in domestic buffaloes

Baruselli

Carvalho²,

Gasparrini

et al. 2023

animal

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Lack of effect of melatonin on ovarian function and response to estrous synchronization and fixed-time AI during the nonbreeding season in lactating dairy buffalo (Bubalus bubalis)

Cited by 7 publications

References 49 publications

Administration of melatonin prior to modified synchronization protocol improves the productive and reproductive efficiency of Chinese crossbred buffaloes in low breeding season

Administration of melatonin prior to modified synchronization protocol improves the productive and reproductive efficiency of Chinese crossbred buffaloes in low breeding season

The Effect of Law Students in Entrepreneurial Psychology Under the Artificial Intelligence Technology

Review: Development, adoption, and impact of assisted reproduction in domestic buffaloes

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