Resynchrony of previously anoestrous cows and treatment of cows not detected in oestrus that had a palpable corpus luteum with prostaglandin F_2𝛂

References

• Buckley , F , Dillon , P , Mee , JF , Evans , RD , Berry , DP , O'Sullivan , K and Veerkamp , RF . 2001 . “ Associations between pedigree index, phenotypic traits and reproductive performance in daughters of Holstein-Friesian sires on Irish commercial dairy farms ” . In Trial Report No. ARMIS 4658 , Ireland : Teagasc, Fermoy, County Cork .
   Google Scholar
• Burke , JM , Staples , CR , Risco , CA , de la Sota , RL and Thatcher , WW . 1997 . Effect of ruminant grade Menhaden fish meal on reproductive and productive performance of lactating dairy cows . Journal of Dairy Science , 80 : 3386 – 98 .
   PubMed Web of Science ®Google Scholar
• Burke , CR , Boland , MP and Macmillan , KL . 1999 . Ovarian responses to progesterone and oestradiol benzoate administered intravaginally during dioestrus in cattle . Animal Reproduction Science , 55 : 23 – 33 .
   PubMedGoogle Scholar
• Carroll , DJ , Hossain , FR and Keller , MR . 1994 . Effect of supplemental fish meal on the lactation and reproductive performance of dairy cows . Journal of Dairy Science , 77 : 3058 – 72 .
   PubMedGoogle Scholar
• Dailey , RA , Inskeep , EK , Washburn , SP and Price , JC . 1983 . Use of prostaglandin F2𝛂 or gonadotropin releasing hormone in treating problem breeding cows . Journal of Dairy Science , 66 : 1721 – 7 .
   PubMed Web of Science ®Google Scholar
• Dematawewa , CM and Berger , PJ . 1998 . Genetic and phenotypic parameters for 305-day yield, fertility and survival in Holsteins . Journal of Dairy Science , 81 : 2700 – 9 .
   PubMed Web of Science ®Google Scholar
• Eagles , VE , Malmo , J and Macmillan , KL . 2001 . Resynchronising returns-to-service in anoestrous cows in Victorian dairy herds . Proceedings of the New Zealand Society of Animal Production , 61 : 176 – 9 .
   Google Scholar
• Ferguson , JD , Sklan , D , Chalupa , WV and Kronfeld , DS . 1990 . Effects of hard fats on in vitro and in vivo rumen fermentation, milk production, and reproduction in dairy cows . Journal of Dairy Science , 73 : 2864 – 79 .
   PubMed Web of Science ®Google Scholar
• Hansen , LB . 2000 . Consequences of selection for milk yield from a geneticist's point of view . Journal of Dairy Science , 83 : 1145 – 50 .
   PubMed Web of Science ®Google Scholar
• Knickerbocker , JJ , Thatcher , WW , Foster , DB , Wolfenson , D , Bartol , FF and Caton , D . 1986 . Uterine prostaglandin and blood flow responses to estradiol-17β in cyclic cattle . Prostaglandins , 31 : 757 – 76 .
   Google Scholar
• Lemon , M . 1975 . The effect of oestrogens alone or in association with progesterone on the formation and regression of the corpus luteum in the cyclic cow . Annales de Biologie Animale Biochemie Biophysique , 15 : 243 – 53 .
   Google Scholar
• Macdonald , KA and Macmillan , KL . 1993 . “ Condition score and liveweight in Jersey and Friesian cows ” . In Proceedings of the 45th Ruakura Farmers'Conference , 47 – 50 . Hamilton : Dairying Research Corporation .
   Google Scholar
• Malmo , J , Winterbottom , J and Eagles , VE . 2000 . “ Anoestrus — the Aussie way ” . In Proceedings of the Australia and New Zealand Combined Dairy Veterinarians'Conference 135 – 44 .
   Google Scholar
• Mann , GE and Lamming , GE . 1995 . Progesterone inhibition of development of the luteolytic signal in cows . Journal of Reproduction and Fertility , 104 : 1 – 5 .
   Google Scholar
• Mann , GE , Lamming , GE , Robinson , RS and Wathes , DC . 1999 . The regulation of interferon-τ production and uterine receptors during early pregnancy . Journal of Reproduction and Fertility , 54 (Supplement) : 317 – 28 .
   Google Scholar
• McDougall , S . 2001 . Reproductive performance of anovulatory anoestrus postpartum dairy cows following treatment with two progesterone and oestradiol benzoatebased protocols, with or without resynchrony . New Zealand Veterinary Journal , 49 : 187 – 94 .
   PubMed Web of Science ®Google Scholar
• McDougall , S and Loeffler , SH . 2003 . Resynchrony of previously anestrus, postpartum dairy cows . Theriogenology , in press
   Google Scholar
• McDougall , S , Burke , CR , Macmillan , KL and Williamson , NB . 1992 . The effect of pretreatment with progesterone on the oestrous response to oestradiol-17β benzoate in the post-partum dairy cow . Proceedings of the New Zealand Society of Animal Production , 52 : 157 – 60 .
   Google Scholar
• Mialot , JP , Laummonnier , G , Ponsart , C , Fauxpoint , H , Barassin , E , Ponter , AA and Deletang , F . 1999 . Postpartum subestrus in dairy cows: comparison of treatment with prostaglandin F2𝛂 or GnRH + prostaglandin F2𝛂 + GnRH . Theriogenology , 52 : 901 – 11 .
   PubMedGoogle Scholar
• Mihm , M , Baguisi , A , Boland , MP and Roche , JF . 1994 . Association between the duration of dominance of the ovulatory follicle and pregnancy rate in beef heifers . Journal of Reproduction and Fertility , 102 : 123 – 30 .
   PubMedGoogle Scholar
• Morton , J . 2000 . The InCalf Project. Progress Report No. 2 , Melbourne : Dairy Research and Development Corporation .
   Google Scholar
• Nebel , RL and McGilliard , ML . 1993 . Interactions of milk yield and reproductive performance in dairy cows . Journal of Dairy Science , 76 : 3257 – 68 .
   PubMed Web of Science ®Google Scholar
• Petit , HV , Dewhurst , RJ , Proulx , JG , Khalid , M , Haresign , W and Twagiramungu , H . 2001 . Milk production, milk composition, and reproductive function of dairy cows fed different fats . Canadian Journal of Animal Science , 81 : 263 – 71 .
   Web of Science ®Google Scholar
• Plunkett , SS , Stevenson , JS and Call , EP . 1984 . Prostaglandin F2𝛂 for lactating dairy cows with a palpable corpus luteum but unobserved estrus . Journal of Dairy Science , 67 : 380 – 7 .
   PubMed Web of Science ®Google Scholar
• Rhodes , FM and Morgan , SR . 1999 . “ Milk production and production worth of anoestrus dairy cows compared with their cycling herd mates ” . In Proceedings of the New Zealand Society of Animal Production 208 – 10 .
   Google Scholar
• Rhodes , FM , Clark , BA , Nation , DP , Taufa , VK , Day , ML , Day , AM , Macmillan , KL and McDougall , S . 1998 . “ Treatment of postpartum anoestrum in New Zealand dairy cows with progesterone and oestradiol benzoate ” . In Proceedings of the 20th World Buiatrics Congress 607 – 11 .
   Google Scholar
• Rhodes , FM , McDougall , S and Verkerk , GA . 2001 . Reproductive performance of dairy cows not detected in oestrus but with a detectable corpus luteum, in response to treatment with progesterone, oestradiol benzoate and prostaglandin F2a . New Zealand Veterinary Journal , 49 : 13 – 17 .
   PubMed Web of Science ®Google Scholar
• Rhodes , FM , Burke , CR , Clark , BA , Day , ML and Macmillan , KL . 2002 . Effect of treatment with progesterone and oestradiol benzoate on ovarian follicular turnover in postpartum anoestrous cows and cows which have resumed oestrous cycles . Animal Reproduction Science , 69 : 139 – 50 .
   Google Scholar
• Sirois , J , Hinshelwood , MM and Fortune , JE . 1989 . Lengthening the estrous cycle with low levels of progesterone prolongs ovarian follicular dominance in heifers . Biology of Reproduction , 40 : 168 – 168 .
   Google Scholar
• Spiekers , H , Klunter , AM , Potthast , V and Pfeffer , E . 1991 . Effects of different concentrate levels on milk yield, feed intake, live weight change, health and reproduction in dairy cows . Livestock Production Science , 28 : 89 – 105 .
   Google Scholar
• Thatcher , WW , Wolfenson , D , Curl , JS , Rico, , LE , Knickerbocker , JJ , Bazer , FW and Drost , M . 1984 . Prostaglandin dynamics associated with development of the bovine conceptus . Animal Reproduction Science , 7 : 149 – 76 .
   Google Scholar
• Wathes , DC and Lamming , GE . 1995 . The oxytocin receptor, luteolysis and the maintenance of pregnancy . Journal of Reproduction and Fertility , 49 (Supplement) : 53 – 67 .
   Google Scholar
• Whittier , WD , Gwazdauskas , FC and McGilliard , ML . 1989 . Prostaglandin F2a usage in a dairy reproduction program for treatment of unobserved estrus, pyometra and ovarian luteal cysts . Theriogenology , 32 : 693 – 704 .
   PubMed Web of Science ®Google Scholar