Oestrus synchronisation in Red Sokoto does treated with prostaglandin F2α and progesterone pessaries

Comparative oestrus synchronisation was carried out in 52 Red Sokoto does with the aim of evaluating the effectiveness and tightness of synchrony of prostaglandin F2- alpha (PGF2α) and progesterone pessaries for clinical application. Does were randomly divided into PGF2α treated (n = 18), progesterone pessaries treated (n = 18) and control (n = 16) groups. A double injection protocol of PGF2α, 12-days apart, and progesterone pessaries inserted for 12-days were used to synchronise oestrus, with no treatment to the Control group. Six sexually active bucks were used as heat detectors. Intensive and non-intensive oestrus detections were employed using visual observation and apronisation. Standing to be mounted was used as the main sign of oestrus. Oestrus response rate was 88.9 %, 33.3 % and 37.5 % for PGF2α, progesterone pessaries and Control groups respectively. Tightness of oestrus synchrony for PGF2α was within four days, while that of progesterone pessaries was within three days. Progesterone pessaries retention rate was 94.4 %. It was concluded that PGF2α double injection, 12-days apart, synchronised oestrus in Red Sokoto doe was more effective with a tighter synchrony and recommended for clinical use than progesterone pessaries inserted for 12-days.Keywords: Oestrus, Progesterone, Prostaglandin F2-alpha, Red Sokoto doe, Synchronisatio

Progesterone profile of red Sokoto does treated with prostaglandin F2-alpha and progesterone sponges for clinical application

Progesterone profiles of Red Sokoto does were evaluated for clinical application. Fiftyone Red Sokoto goats does were assigned into three groups: (a) prostaglandin F2-alpha (n = 17), and given double injection of prostaglandin F2-alpha at 12-days interval; (b) progesterone sponges (n = 17), and administered progesterone sponges, inserted for 12-days; and (c) control (n = 17), no treatment. Blood samples were collected from all groups from day 0 to 6, day 9, day 12 to 15, day 19, and day 21 to 23 for progesterone profile. Group A had four profiles: 1) does in luteal phase at first and second injections; 2) does in luteal phase at first injection but insensitive at second; 3) does in follicular phase at first injection but luteal phase at second; 4) does, insensitive at first and second injections. Group B profile were: 1) does in luteal phase at sponge insertion; 2) does in luteal phase with decreased progesterone concentration; 3) does in follicular phase at sponge insertion; 4) does with insensitive corpus luteum at sponge insertion. It was concluded that progesterone profile assisted in describing exhibitions and nonexhibitions of behavioural oestrus in Red Sokoto does

Some Aspects of Reproductive Performance of Red Sokoto Goat Does Post Synchronization with Prostaglandin F2-Alpha And Progesterone Sponges

A study on reproduction of 52 Red Sokoto Goat (RSG) does was conducted to evaluate some aspects of their reproductive performance for clinical application and as an update. Does were randomly divided into 18, 18 and 16 as prostaglandin F2-alpha (PGF2α),  progesterone sponges (P4S) and control groups respectively. Double injection protocol of PGF2α, 12-days apart, and P4S inserted for 12-days were used to synchronize oestrus, while the control group received no treatment. Thirteen bucks were used, seven as breeders and six as heat detectors. Oestrus detection employed visual observation and apronisation. Standing to be mounted was the cardinal  sign of oestrus. Breeding was by hand-mating and at detected oestrus. Results indicated heterosexual and homosexual mounting, thin stringy clear mucous discharge and standing-to-be-mounted as signs of oestrus. Oestrus response rate was 100 %, 94.4 % and 75.0 %  for PGF2α, P4S and Control respectively; P4S retention rate was 94%. Effect of synchronization agent on on-set of oestrus was 15.86 + 0.73 h (PGF2α), 15.08 + 0.84 h (P4S) and 17.73 + 0.85 h (Control), while parity on on-set of oestrus was 12.12 + 1.87 h (first), 17.77 + 0.77  h (second) and 18.79 + 1.95 h (third). Effect of synchronization agent on duration of oestrus was 44.76 + 2.13 h, 45.78 + 2.46 h and 42.40 + 2.50 h for PGF2Α P4S and Control respectively, while parity on duration of oestrus was 42.26 + 5.48 h (first), 45.02 + 2.27 h (second) and 45.67 + 5.73 h (third). There were no significant differences (P > 0.05) for oestrus on-set and duration. Overall pregnancy and  conception rates were 65.4 % and 72.3 % respectively, kidding rate was 76.5 %, abortion rate was 23.5 % and late embryonic mortality rate was 26.5 %. Mean gestation were 146.29 + 1.59 and 146.63 + 1.64 for single and twin births respectively. Age, parity and body condition score of dam had significant effect on litter size (P < 0.05). It was concluded that some aspects of the reproductive  performance of the RSG does studied following oestrus synchronization with PGF2α and P4S had clinical application, good and acceptable. Key Words: Reproductive, Red Sokoto, Does, Prostaglandin F2-alpha and Progesterone