Relationship of Age, Body Condition Score and Rump Fat Thickness with Semen Quality of Murrah Buffalo Breeding Bulls

Yadav, Sudheer Kumar; Singh, Pawan Kumar; Bhakat, Mukesh; Mohanty, T. K.; Kumar, Ajeet; Singh, Ajeet; Mondal, Sudeshna; Upadhyay, Vipin

doi:10.5455/ijlr.20180116015543

Cited by 4 publications

(2 citation statements)

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“…Nevertheless, Yadav et al [97] observed than a higher rump fat thickness was associated with a high percent of sperm abnormalities. In addition, it was observed that rump fat thickness was higher in low libido bulls (7.29±0.93 mm) than in bulls with a high libido (5.29±0.62 mm, P < 0.05) [98].…”

Section: Presence and Health Of Bullsmentioning

confidence: 98%

Reproductive Performance of Water Buffalo Cows: A Review of Affecting Factors

Nava-Trujillo¹,

Valeris-Chacín²,

Morgado-Osorio³

et al. 2020

J. Buffalo Sci.

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This article aims to review both the economic impact of reproductive failures on the profitability of water buffalo systems and the effect of different factors on the reproductive performance of water buffaloes. Besides, an overview of various non-hormonal alternatives to improve reproductive performance is made. The optimal reproductive efficiency in water buffaloes implies calving to conception interval around 90 days to reach a calving interval of 400 days, with longer calving intervals having a negative impact on profitability. Reproductive efficiency is the consequence of the interaction of genetic and non-genetic factors, and the recognition of these factors by analyzing the reproductive information must be a priority. Although each factor's impact can be of greater or lesser magnitude depending on the conditions of each herd, some factors like nutrition, milk yield, body condition score, negative energy balance, parity, bull presence, low estrus intensity, and season can be considered high-impact factors. Not all factors are common among farms; therefore each farm must implement a program for the identification, control, and prevention of reproductive problems, especially during early lactation, to prevent a long anestrus; and when artificial insemination is used, so that it is done at the correct time with respect to the beginning of estrus to enhance fertility.

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Section: Presence and Health Of Bullsmentioning

confidence: 98%

Reproductive Performance of Water Buffalo Cows: A Review of Affecting Factors

Nava-Trujillo¹,

Valeris-Chacín²,

Morgado-Osorio³

et al. 2020

J. Buffalo Sci.

View full text Add to dashboard Cite

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“…If the score is poor, the bull's output suffers throughout the breeding season as he loses weight. If the BCS is too high, sperm quality and stamina are adversely affected (Yadav et al, 2018;Bhakat et al, 2009). Temperament is another consideration for bull selection.…”

Section: Maternal and Fertility Traitsmentioning

confidence: 99%

Selection of Heifers and Breeding Bulls for Reducing Calving Difficulties in the First Calvers: An Overview

Shah¹,

Sethi²,

Kumar³

et al. 2021

ijvsbt

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Calving difficulty is associated with cow mortality, calf loss, veterinary and labor costs, and causes delayed return to estrus and lower conception rate. Dystocia is common in heifers, and the frequency decreases with the increasing age of the cow. Farmers need to consider both genetics and management factors in an attempt to reduce dystocia. Calf birth weight, the pelvic area of the dam and their interrelationships are major determinants of dystocia. The weight of the calf is governed by genetic, environmental and management factors. Genetic factors include sex, length of gestation, breed, inbreeding, and genotype. Non-genetic factors include age and parity of the dam, nutrition of the dam during various phases of gestation, and environmental temperature and humidity. Dystocia management must begin with a selection of heifer for mating with respect to the body weight of heifers, body condition score (BCS) and dam’s pelvic area should be considered before heifer selection. Not only heifer selection but sire selection using an estimated breeding value for calving ease should also be considered to lessen the dystocia rate in a herd. A combination of culling heifers with small pelvic areas and using bulls reported to be calving ease sire may reduce dystocia significantly. Apart from all these factors, genomic selection for reducing calving difficulties is a new tool for dystocia management.

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