Parâmetros reprodutivos do rebanho caprino da raça Saanen criados no Departamento de Zootecnia /UFRPE-SEDE

Abstract

The objective of this study was to analyze the reproductive parameters of the goat herd of the Saanen breed raised in the Department of Animal Science / UFRPE-SEDE, in relation to the reproductive and productive efficiency of the short protocol of induction of estrus, strategically used in order to increase the production potential of the animals throughout their reproductive life. From the semiological evaluation, 34 females were classified according to body condition score (ECC) and submitted to the intensive regimen with diet based on 200 g concentrate / day, in addition to tifton hay, water and mineral salt ad libitum. Females were induced to estrus using short protocol of estrus induction / synchronization, for which a CIDR® containing 0.33 g of progesterone and 0.3 mL of Cloprostenol Sodium (CIOSIN®) was introduced into the female vagina on day zero (D0) The device remained in the cranial portion of the vagina for five days (D5), was given intramuscularly. and 200uI of equine chorionic gonadotrophin (eCG; Novormon 5000) was administered intramuscularly. The detection of estrus was performed through the ruffling and the covers through controlled mount. The diagnosis of gestation was performed 30 days after the coverage. Regarding estrus observation, 97.06% (33/34) of the females went into estrus. Regarding the estrus observation time (24 to 72 hours after implant removal), 64.70% (22/34), 17.64% (6/34), 14.70% (5.34) females presented estrus in 24, 36 and 48 hours, respectively. Regarding the rate of conception, 25 of them engaged, with a percentage of 73.53% conception. In relation to the birth rate it was 96%, with the total of 49 kids born. The mean birth weight of the offspring (two animals / parturition), mean weight 3.4 kg, already (three animals / parturition) presented a mean weight of 2.7 kg. The mean weight at 45 days,10.2 kg (two animals / childbirth), already (three animals / childbirth) had an average weight equal to 8.3 kg. On the other hand, the prolificacy rate for male exposed goat, which relates the number of goats born per female / year, showed an average of 1.44 goats / female / year, with reproductive efficiency of 117,65% or 1, 17. The use of short induction protocols associated with herd management tools, among them the body condition score, weighing and zootechnical control were fundamental for the development of the herd.