Application of liquid semen technology under the seasonal dairy production system in New Zealand

Yang, Da-Lei; Standley, N.T.; Xu, Z.Z.

doi:10.1016/j.anireprosci.2018.01.004

Cited by 19 publications

(20 citation statements)

References 47 publications

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“…The use of cooled semen is relatively common in goats, and females are usually inseminated out of the breeding season with cooled semen within the first 24 h of storage [ 1 ]. The advantages and disadvantages of AI with cooled semen samples in dairy cattle have been recently reviewed [ 2 ]; most of them are similar in the goat. The advantages include easier handling of cooled AI doses, transport and higher fertility rates compared to frozen AI doses [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…The advantages and disadvantages of AI with cooled semen samples in dairy cattle have been recently reviewed [ 2 ]; most of them are similar in the goat. The advantages include easier handling of cooled AI doses, transport and higher fertility rates compared to frozen AI doses [ 2 , 3 ]. Moreover, cooled doses require less spermatozoa per dose, which means more AI doses per ejaculate [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, cooled doses require less spermatozoa per dose, which means more AI doses per ejaculate [ 4 ]. Another reason which is becoming more relevant for goats is that the cost of a refrigerated cooled AI dose is lower than the cost of a frozen dose [ 2 ]. In goats, it is not always possible to pass through the cervix and to carry out an intrauterine AI.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sperm Concentration and Storage Temperature on Goat Spermatozoa during Liquid Storage

Sadeghi

Gallego

García-Colomer

et al. 2020

Biology

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The use of cooled semen is relatively common in goats. There are a number of advantages of cooled semen doses, including easier handling of artificial insemination (AI) doses, transport, more AI doses per ejaculate, and higher fertility rates in comparison with frozen AI doses. However, cooled semen has a short shelf life. The objective of this study was to examine the effect of temperature and sperm concentration on the in vitro sperm quality during liquid storage for 48 h, including sperm motility and kinetics, response to oxidation, mitochondrial membrane potential (MMP) and DNA fragmentation in goats. Three experiments were performed. In the first, the effects of liquid preservation of semen at different temperatures (5 °C or 17 °C), durations (0, 24 and 48 h) and sperm concentrations (250 × 106 sperm/mL (1:2 dilution rate), 166.7 × 106 sperm/mL (1:3 dilution rate) or 50 × 106 sperm/mL (1:10 dilution rate)) on sperm motility and kinetics were studied. In the second experiment, the effect of temperature, sperm washing and concentration on sperm motility and DNA fragmentation was studied. Finally, the effect of sperm concentration and duration of storage at 5 °C on sperm motility, response to oxidative stress and MMP was examined. We found that refrigerated liquid storage of goat sperm impaired sperm quality, such as motility, MMP and response to oxidation, as storage time increased; however, sperm DNA fragmentation index was not significantly affected. Liquid storage at 5 °C preserved higher total motility than at 17 °C. Moreover, we observed that the reduction of sperm concentration below 500 × 106 sperm/mL did not seem to improve the quality of spermatozoa conserved in milk-based extender in the conditions tested.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Sperm Concentration and Storage Temperature on Goat Spermatozoa during Liquid Storage

Sadeghi

Gallego

García-Colomer

et al. 2020

Biology

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“…It is generally accepted that artificial insemination (AI) in livestock could be helpful to genetic improvement and management of reproduction (Allai et al, ). Compared to frozen–thawed semen, liquid‐stored semen possess the advantages of convenient and economic (Yang, Standley, & Xu, ). Long‐term preservation of semen at low temperature could be helpful for simplifying field management of reproduction in large flocks (Falchi, Galleri, Zedda et al, ).…”

Section: Introductionmentioning

confidence: 99%

Effect of addition of melatonin on liquid storage of ram semen at 4°C

et al. 2019

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Adding a certain amount of antioxidants to semen extender has been shown to improve semen quality. The aim of present study was to elucidate whether the supplementation of melatonin to the Tris-based extender (CTR) could enhance the quality of ram spermatozoa during storage at 4°C. Ram semen samples were collected and diluted with CTR extender containing different concentrations (0, 0.05 (M 0.05), 0.1 (M 0.1), 0.2 (M 0.2) or 0.4 (M 0.4) mM) of melatonin. Sperm routine indicators, mitochondrial activity, total antioxidant capacity (T-AOC) and malondialdehyde (MDA) content were analysed in control and melatonin treatment groups. The higher per cent of motility, plasma membrane integrity, mitochondrial activity and T-AOC activity was observed in M 0.05, M 0.1 and M 0.2 groups compared to control group at 5 days of storage (p < 0.05), while lower percentage of MDA content was observed among these groups (p < 0.05). In addition, there were no significant differences in acrosome integrity among the control and M 0.05, M 0.1 and M 0.2 groups during the experiment. The above results show that the addition of 0.05, 0.1, 0.2 mM of melatonin is beneficial to the preservation of ram semen during liquid storage at 4°C mainly through antioxidative stress. K E Y W O R D S antioxidant, melatonin, Ram, semen storage How to cite this article: Dai G-C, Meng Y, Zhang L, et al. Effect of addition of melatonin on liquid storage of ram semen at 4°C.

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“…Identification sire with high genetic potential is a challenge for animal breeding (Rotar et al, 2016). Genetic improvement is one of the main factors responsible for the large increase in milk yield of dairy cow; this success is mainly attributable to the efficient application of AI with semen from proven sire was selected by progeny test (Yang et al, 2018). The potency of milk production and economic value per bull is presented in Table 5.…”

Section: Determination Of Genetic Superioritymentioning

confidence: 99%

Modeling for determining the superiority of Holstein bulls as frozen semen producer and genetic source for milk production

Argiris

Santoso

Ondho

et al. 2019

J. Indonesian Trop. Anim. Agric.

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The objective of this study was to develop models for determination the superiority of Holstein bulls as a producer of frozen semen and inheritance of the genetic traits of milk production. The ability of the bull to produce frozen semen per years was analyzed descriptively. Reproductive efficiency of frozen semen in artificial insemination was calculated by service per conception (S/C). Estimation sire breeding value for milk production was calculated by contemporary comparison (CC) method. Model of superiority bulls was analyzed by Structural Equation Model with Partial Least Square method (SEM-PLS). Total average production of frozen semen was 23,109±14,970 doses/year. The average S/C was 2.83. The CC value ranged from -1,865.7 until +1,636.3. Potency of milk production resulted from lactation cow offspring per bulls ranged from 951,749.2 to 52,347,822.9 liters per year. The economic value of bulls based on the potency milk production of offspring ranges from IDR 4,758,745,999 to IDR 261,739,114,505. The superiority of bulls was affected significantly (P<0.05) by frozen semen production, reproductive efficiency and average milk production of daughter cows (DC) as much as 0.59, -0.53 and 0.33, respectively. In conclusion, the superiority of bull can be explained about 78.3% by the production of frozen semen production, reproductive efficiency and milk production of offspring.

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Application of liquid semen technology under the seasonal dairy production system in New Zealand

Cited by 19 publications

References 47 publications

Effect of Sperm Concentration and Storage Temperature on Goat Spermatozoa during Liquid Storage

Effect of Sperm Concentration and Storage Temperature on Goat Spermatozoa during Liquid Storage

Effect of addition of melatonin on liquid storage of ram semen at 4°C

Modeling for determining the superiority of Holstein bulls as frozen semen producer and genetic source for milk production

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