Prediction of Lactation Curve in Saudi Arabia , Damascus and Their Crossbred Goats

Mousa, E.; El-Zarei, M. F.; Alseaf, A. M.

doi:10.12816/0030730

Cited by 1 publication

(4 citation statements)

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“…In the current study, the overall mean of PMY of Syrian Damascus goats was 3.40 ±0.05 kg (Table 1). This estimate is greater than those of 1.29 kg, 2.4 kg, and 1.1 kg that reported by Ayasrah et al (2013) The PW was attained at the fifth week (5.09±0.08 weeks, Table 1), which is higher than 3.9 weeks and 3.1 weeks reported by Ayasrah et al (2013) and Mousa et al (2016) in Damascus goats in Jordan and Aradi goats in Saudi Arabia, respectively. On the other hand, higher estimate of 7.14 weeks was observed by Miranda-Alejo et al (2019) in Murciano-Granadina goats in Spain.…”

Section: Lactation Curve Traitscontrasting

confidence: 57%

“…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.…”

Section: Lactation Curve Traitscontrasting

confidence: 55%

“…The overall mean of the parameter (a) was 2.6±0.05 kg which is higher than those of 1.12 kg, 0.9 kg, and 2.08 kg that reported by Ayasrah et al (2013), Mousa et al (2016), andSiqueira et al (2017) of Damascus goats in Jordan, Aradi goats in Saudi Arabia, and Saanen goats in Brazil, respectively. However, Takma et al (2009), and Abosaq et al (2012) found higher estimates of 5.8 kg and 3.1 kg of Bornova goats in Turkey and Cyprus Damascus goats in Libya, respectively.…”

Section: Lactation Curve Traitscontrasting

confidence: 53%

“…In the same context, the overall mean of the parameter (b) was 0.45 ±0.011 kg/week. This estimate is higher than the estimates of 0.35 kg/week, 0.13 kg/week, and 0.20 kg/week observed by Ayasrah et al (2013), Mousa et al (2016), andSiqueira et al (2017) of Damascus goats in Jordan, Aradi goats in Saudi Arabia, and Saanen goats in Brazil, respectively. However, this estimate is lower than that reported by El-Wakil and Fooda (2013) of Defray goats in the Sultanate Oman (0.83 kg/week).…”

Section: Lactation Curve Traitsmentioning

confidence: 53%

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Lactation Curve and Milk Production Traits of Syrian Damascus Goats

Almasri

Abou-Bakr²,

Ibrahim³

et al. 2023

Egyptian Journal of Animal Production

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This study aimed to describe the lactation curve using the Wood's function, estimate the milk production traits and investigate the non-genetic factors affecting both, the lactation curve and milk production traits of Syrian Damascus goats. A total number of 334 weekly test-day milk records were collected during the year 2019 on 98 Damascus goats at Karhta station, Syria. The least squares means of the studied lactation curve traits were 2.6 ± 0.05 kg for the initial milk yield after kidding (parameter a), 0.45 ± 0.011 kg/week for the rate of rise in milk production to peak lactation (parameter b), 0.09 ± 0.001 kg/week for the rate of decrease in milk production from peak to the end of lactation period (parameter c), 3.40 ± 0.05 kg for peak milk yield (PMY), 5.09 ± 0.08 weeks for peak week (PW) and 55.71 ± 0.54 % for persistency of lactation (P%). The estimates for milk production traits were 413 ± 5.98 kg, 199 ± 1.23 days, and 2.1 ± 0.02 kg/day for total milk yield (TMY), lactation period (LP), and daily milk yield (DMY), respectively.The results showed that parity exerted a highly significant (P < 0.01) effect on all the studied traits except PW and P%. Also, the month of kidding had a significant effect on all the studied parameters except P%. However, the type of birth had no significant effect on all the studied traits. It could be concluded that Wood's function is a convenient tool to describe the lactation curve of Syrian Damascus goats. Also, Damascus goats showed a higher potentiality for milk production and a long lactation period under subtropical environmental conditions.

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