Lactation Characteristic of Etawah Crossed Breed Goats Under Intensive Management

Abstract

The study aimed to describe lactation characteristic of Etawah Crossed Breed goats raised under intensive management. The study located in BBPTU HPT Baturraden, Purwokerto, used 27 female pregnant goats, at 24 to 27 months old. The goats were managed followed standard operating procedure of the research institute. The data consisted of body size and body weight, colostrum and milk yield, lactation period and reproductive performance. The results showed the average of daily milk yield, lactation period, total milk and colostrum production in first lactation were 960±340 mL/day, 157±41 days, 114,720±68,900 mL and 415±240 mL/day. The proportion of monthly milk production from initial lactation to dry off were 21.27, 22.17, 20.18, 17.29, 12.52, 9.13, and 5.65% of total lactation yield, respectively. Peak production ranged from first to second months of lactation, the highest was in the week 4th, averaged of 1080 mL/day. Production persistency was 66.39%. The rate of increase toward peak was 5.60%/week and rate of decline from peak was -3.92% of milk yield in the previous week. Trend equation of lactation curve was Y = 8412.7 –233.65 x. Means period of postpartum mating, service per conception and body condition score were 88.7±39.2 days, 1.2 and 3.45, respectively. There was no correlation between postpartum mating, body condition score and milk production. The study concluded that Etawah Crossed Breed goat under intensive management had short lactation period, early peak production, low persistency. The dry period was estimated 3 months and pregnancy occurred after peak production.

Lactation Curve and Milk Production Traits of Syrian Damascus Goats

“…This result is higher than that reported by Al-Azzawi ( 2017 In the same context, the overall mean of the LP was estimated as 199±1.23 days (Table 2). This estimate is lower than that demonstrated by Yakanet The overall mean of DMY was estimated as 2.1±0.02 kg (Table 2), which is greater than estimates of 0.99 kg, 0.7 kg, 1.4 kg, and 0.45 kg reported by Bermejo et al (2020), Marković et al (2020), Suranindyah et al (2020), andAkbaş et al (2021) in Murciano-Granadina goats in Spain, local Balkan goats in India, Etawah crossed goats in Indonesia, and Honamlı goats in Turkey, respectively. However, the current estimate is lower than that found by Kunbharet al (2016) of 2.7 kg in Kamori goats in Pakistan.…”

“…The overall mean of persistency of lactation (P %) was 55.71±0.54 % (Table 1), which is lower than those estimates of 86 %, 84 %, and 66.4 % that obtained by Ayasrah et al (2013), Mousa et al (2016), andSuranindyah et al (2020) of Damascus goats in Jordan, Aradi goats in Saudi Arabia and Etawah crossed goats in Indonesia, respectively. Meanwhile, the current estimate is higher than the persistency of lactation that observed by Takma et al (2009) in Bornova goats (29.76 %) and Saanen goats (25.05 %) in Turkey.…”