Artificial insemination with frozen semen in dogs: A retrospective study of 10 years using a non-surgical approach

Thomassen, Ragnar; Sanson, Gorm; Krogenæs, Anette; Fougner, J. A.; Berg, K. Andersen; Farstad, W.

doi:10.1016/j.theriogenology.2006.01.022

Cited by 76 publications

(93 citation statements)

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“…Similar improvements in semen quality by the use of BHT have been reported for turkey tom (Donoghue and Donoghue, 1997), cattle bull (Chaterjee and Gagnon, 2001;Shoae and Zamiri, 2008), ram (Watson and Anderson, 1983), goat (Khalifa et al, 2008), and boar (Roca et al, 2004) spermatozoa. The protective effect of antioxidant (BHT) is attributed to two mechanisms: firstly, the incorporation of the compound in the sperm membranes, hence, making them more fluidic and preventing them from the damage (Ijaz et al, 2009) and, secondly, declining the damaging potential of lipid peroxyl radicals by conversion into hydroperoxides (Thomassen et al, 2006). In order to design an appropriate and efficient cryoprotection protocol, the interactions between the components of the extender and the antioxidant, however, must be kept into account.…”

Section: Discussionmentioning

confidence: 99%

“…An increasing interest and attempts for improvement in semen cryobiology of canines in last five years (Yu et al, 2002;Núñez-Martínez et al, 2005Neagu et al, 2010) have led to well-established cryoprotective protocols allowing better whelping rates (over 70%) (Thomassen et al, 2006) and artificial insemination (AI) of bitches with frozen-thawed semen is now being offered as a routine clinical service by many veterinarians world-wide (Yu et al, 2002).…”

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confidence: 99%

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Optimal inclusion level of butylated hydroxytoluene in semen extender improves the quality of post-thawed canine sperm

Ziaullah¹,

Ahmad²,

Aleem³

et al. 2012

CZECH J ANIM SCI

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ABSTRACT:The study was conducted to evaluate the potential cryoprotective effect of butylated hydroxytoluene (BHT) through post-thaw evaluation of canine semen and its optimal inclusion level. Ejaculated canine semen was extended in TRIS-glucose egg yolk extender containing various concentrations of BHT (0.5, 1.0, 1.5, 2.0, and 2.5mM). Semen was frozen at −196°C using 200 × 10 6 spermatozoa per 0.5 ml straws and post-thaw evaluation was carried out in terms of sperm motility, viability, plasma membrane integrity, and acrosomal integrity through phase-contrast microscope, supravital staining, hypo-osmotic swelling test, and normal acrosomal ridge, respectively. BHT was found to improve (P > 0.005) all post-thawed semen quality parameters at an inclusion level of 1.0mM in the extended semen. However, higher concentrations than this were found to have detrimental effects.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Optimal inclusion level of butylated hydroxytoluene in semen extender improves the quality of post-thawed canine sperm

Ziaullah¹,

Ahmad²,

Aleem³

et al. 2012

CZECH J ANIM SCI

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“…Borge et al (26) suggested that productivity decreased after the second parity. Some authors declared a decrease in litter size after 5-6 years of age (8,20,26,27).…”

Section: Effect ---------------------------P < ----------------------mentioning

confidence: 99%

Breed, parity, and cycle season effects on life-timereproduction in bitches: a retrospective study

Polat¹,

Çolak²,

Cengiz³

et al. 2015

Turk J Vet Anim Sci

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IntroductionBitches are monoestrous, spontaneous ovulatory and traditionally nonseasonal mammalians, except for some breeds such as Basenji and Chow-Chow (1). The estrous cycle of the bitch is considerably longer than that of other domestic species and the estrous period is followed by a longer interestrous interval (diestrus and anestrus) (2). The interval is highly variable (2-10 months) among the breeds (3,4). Various factors that affect the interestrous period and pregnancy duration, such as breed, age, parity, and litter size have been described in previous studies (3,5,6).Although bitches are considered nonseasonal, the seasonal effect on the reproductive parameters are still contradictory. Studies confirming (1,7,8) and denying (3,9-11) seasonal effects on bitch reproduction are available. To our knowledge, this was the first comprehensive retrospective study in Turkey investigating reproduction in bitches to reveal: 1) the distribution of whelping among breeds; 2) the breed and parity effect on pregnancy rates; 3) the breed, parity, and estrus onset season effects on the cycle interval, the proestrus, and estrus length; and 4) the breed and parity effects on the pregnancy duration and litter size.

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“…For frozen semen, deposition of the semen into the uterine lumen is recommended in order to achieve good pregnancy rates (Thomasse et al, 2001;Thomassen et al, 2006). Even though the first report of successful AI with frozen semen in dogs was a result of intravaginal deposition of the semen (Seager, 1969) it has been shown that success rates with intrauterine inseminations are far superior (Thomassen et al, 2001;Thomassen et al, 2006).…”

Section: Wwwintechopencommentioning

confidence: 99%

Artificial Insemination in Veterinary Science

Heise¹

2012

A Bird's-Eye View of Veterinary Medicine

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Artificial insemination with frozen semen in dogs: A retrospective study of 10 years using a non-surgical approach

Cited by 76 publications

References 10 publications

Optimal inclusion level of butylated hydroxytoluene in semen extender improves the quality of post-thawed canine sperm

Optimal inclusion level of butylated hydroxytoluene in semen extender improves the quality of post-thawed canine sperm

Breed, parity, and cycle season effects on life-timereproduction in bitches: a retrospective study

Artificial Insemination in Veterinary Science

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