ANSC 210 1st Edition Lecture 16 Outline of Previous Lecture I II III IV Belgian Malinois What are they trained to do Selecting a Dog Patrol Cars Outline of Current Lecture I II Dog a Breeding Cycles b Vaginal Cytology c Breeding Bitches Cats a Cat Cycles Current Lecture I Dog a Breeding Cycles i Monoestrus breeder 1 Only come into heat once or twice a year ii Canine cycle stages 1 Anestrus a When the dog is not in heat b No ovarian activity c No estrogen and no progesterone activity 2 Proestrus a Some dogs bleed blood during this time b This is when you see signs of estrus c Some do not spot at all and some bitches will spot 2 Estrus a Secreting pheromones which will attract intact males b Actively seeking out male dogs c Breeders usually breed halfway through the 9 day estrus cycle 2 Diestrus a Occurs for 60 days no matter what These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute b b b b b Progesterone will be high in either pregnant or non pregnant dogs Vaginal Cytology i One way to determine what reproductive stage the bitch is in ii Take a vaginal swap and roll it into a slide iii The slide is then stained iv Estrus cells will be dead and will not have a nucleus v The cell membranes will be thin Breeding Bitches i Ways to determine when to breed 1 Count the days from the start of proestrust the start of bleeding a Breed ten to fourteen days after the onset 2 Breed at first standing heat a Breed when the bitch will allow the dog to mount b Breed two and four days after 2 Progesterone testing a Breed when progesterone is 18 nm l b Breed two to three days later 2 Vaginal cytology a Take the dog to the vet and they will vaginally swap her b Breed when 80 of the cells are anuculear c Breed two to three days later ii Bring the bitch to the dog 1 The dog is more comfortable and the dog needs to perform ii Bitch will play with the dog iii The males mount from behind and the dog will step over the hindquarters posteriorly iv The males and bitch will be combined for thirty to forty minutes v Mounting and intromission occur followed by engorgement of the bulbis glands 1 The initial penetration the dog only ejaculates a small portion of highly concentrated sperm 2 The second penetration the dog is tied the dog ejaculates a lot of sperm Diagnosis i Palpation ii Ultrasound iii Radiographs 1 Skeletons calcify about day 45 2 You can then see each pup ii Relaxin 1 Blood sample 2 If the blood sample is positive for relaxin at about twenty days the bitch is pregnant Gestation i ii iii iv v vi vii II You can determine when the bitch will give birth by taking rectal temperature every day The temperature is usually 100 100 5 If it drops o 99 98 the bitch will give birth at 8 12 hours The dog will also start nesting The dog might stop eating Will pant Delivery 1 The bitch or a human needs to remove the amniotic sac and stimulate breathing 2 The puppies need to eat within one hour to get the colostrum 3 The puppies need to defecate meconium within one hour a Black tar poop b If you do not get them to defecate this they will become constipated Cats a Cat Cycles i Polyestrus breeders ii Cycles 1 Anestrus 2 Proestrus 3 Estrus 4 Postestrus no ovulation 5 Diestrus if ovulated ii Ccats are induced ovulators iii The queen must have copuation in order to ovulate
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